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Hays Interview Questions

Hays Interview Guides

Machine Learning

Encoding Categorical Features

Missing Housing Data

Bank Fraud Model

One Million Rides

Why would one algorithm generate different success rates with the same dataset?

Same Algorithm Different Success

Data Structures & Algorithms

Given two sorted lists, write a function to merge them into one sorted list.

Merge Sorted Lists

Find the missing integer from a array of consequtive integers

Find the Missing Number

Get Top N Frequent Words

Given an integer N, write a function that returns all of the prime numbers up to N

Prime to N

Move Zeros Back

Write a query to select the top 3 departments with at least ten employees and rank them according to the percentage of their employees making over 100K in salary.

Employee Salaries

Select the 2nd highest salary in the engineering department

2nd Highest Salary

Calculate the first touch attribution for each `user_id` that converted.

First Touch Attribution

Closest SAT Scores

Get the top 3 highest employee salaries by department

Top Three Salaries

Probability

First to Six

500 Cards

Raining in Seattle

Found Item

Given three uniform(0,4) random variables, what is the probability that the median of them is greater than 3?

Median Probability

Statistics

P-value to a Layman

Say you are given a dataset of perfectly linearly separable data. What would happen when you run logistic regression?

Perfectly Separable

What are the assumptions of linear regression?

Assumptions of Linear Regression

Using R Squared

What statistical test could you use to determine which of two parcel types is better to use, given how often they are damaged?

Different Parcel Effectiveness

When an interviewer asks a question along the lines of:

<ul>
<li>What would your current manager say about you? What constructive criticisms might he give?</li>
<li>What are your three biggest strengths and weaknesses you have identified in yourself?</li>
</ul>

How would you respond?

When asked about your strengths in an interview, what is an effective way to respond?

When asked about your strengths in an interview, what is an effective way to respond?

Your Strengths and Weaknesses I

Which of the following is an acceptable strategy when discussing weaknesses in an interview?

Which of the following is an acceptable strategy when discussing weaknesses in an interview?

Your Strengths and Weaknesses II

What do you tell an interviewer when they ask you what your strengths and weaknesses are?

Your Strengths and Weaknesses

Behavioral

When an interviewer asks you a question along the lines of:

<ul>
<li>Why did you apply to our company?</li>
<li>What are you looking for in your next job?</li>
<li>What makes you a good fit for our company?</li>
</ul>

How should you respond?

When asked 'What are you looking for in your next job?' in an interview, how can you tie the company's employee benefits into your response?

When asked 'What are you looking for in your next job?' in an interview, how can you tie the company's employee benefits into your response?

Why Do You Want to Work With Us I

How can company values be used effectively in an interview when asked 'What makes you a good fit for our company?'

How can company values be used effectively in an interview when asked 'What makes you a good fit for our company?'

Why Do You Want to Work With Us II

When responding to the question 'Why did you apply to our company?' during an interview, what aspect should you highlight?

When responding to the question 'Why did you apply to our company?' during an interview, what aspect should you highlight?

Why Do You Want to Work With Us III

How would you answer when an Interviewer asks why you applied to their company?

Why Do You Want to Work With Us

Describe a data project you worked on. What were some of the challenges you faced?

Describing a data project and its challenges

Hurdles In Data Projects

How would you explain what a p-value is to someone who is not technical?

What does a p-value in a statistical test represent?

What does a p-value in a statistical test represent?

P-value to a Layman I

In a statistical test, how does a low p-value (less than 0.05) influence our decision about the null hypothesis?

In a statistical test, how does a low p-value (less than 0.05) influence our decision about the null hypothesis?

P-value to a Layman II

What are the assumptions of linear regression?

Which assumption of the residuals of the standard linear regression model can not be overcome by increasing the sample size?

Regression assumptions

Let’s say that you’re training a classification model.

How would you combat overfitting when building tree-based models?

Let's say that you're training a classification model.   How would you combat overfitting when building tree-based models?

Overfit Avoidance

How would you handle the data preparation for building a machine learning model using imbalanced data?

Addressing imbalanced data in machine learning through carefully prepared techniques.

Data Preparation for Imbalanced Data

Let’s say we’re comparing two machine learning algorithms. In which case would you use a bagging algorithm versus a boosting algorithm? 

Give an example of the tradeoffs between the two.

In machine learning, when would you use a bagging algorithm over a boosting algorithm?

In machine learning, when would you use a bagging algorithm over a boosting algorithm?

Bagging vs. Boosting

Bagging vs Boosting

Talk about a time when you had trouble communicating with stakeholders. How were you able to overcome it?

Strategically resolving misaligned expectations with stakeholders for a successful project outcome

Stakeholder Communication

Given a string, write a function to determine if it is palindrome or not.

Note: A palindrome is a word/string that is read the same way forward as it is backward, e.g. <code>&#39;reviver&#39;</code>, <code>&#39;madam&#39;</code>, <code>&#39;deified&#39;</code> and <code>&#39;civic&#39;</code> are all palindromes, while <code>&#39;tree&#39;</code>, <code>&#39;music&#39;</code> and <code>&#39;person&#39;</code> are not palindromes.

Example:

Input:

<pre tabindex="0" class="chroma"><code>word1 = &#34;tree&#34;
word2 = &#34;radar&#34;
</code></pre>

Output:

<pre tabindex="0" class="chroma"><code>def is_palindrome(word1) -&gt; False
def is_palindrome(word2) -&gt; True
</code></pre>

Given a string, write a function to determine if it is palindrome or not.

String Palindromes

Write a SQL query to select the 2nd highest salary in the engineering department.

Note: If more than one person shares the highest salary, the query should select the next highest salary.

Example:

Input:

<code>employees</code> table

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>first_name</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>last_name</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>salary</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>department_id</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>
<code>departments</code> table

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>
Output:

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>salary</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>

Imagine you are asked to build a machine learning model to decide new loan approvals for a
financial firm. You ask the data department in the company for a subset of data to get started
working on the problem. The data includes different features about applicants such as age,
occupation, zip code, height, number of children, favorite color, etc. You decide to build
multiple machine learning models to test out different ideas before settling on the best one.

How would you explain the bias-variance tradeoff with regards to
building and choosing a model to use?

Bias vs. Variance Tradeoff

Explain the difference between the XGBoost and random forest algorithms and give an example where you would use one over the other.

Why might a data scientist choose to use XGBoost instead of Random Forest for a particular machine learning task?

Why might a data scientist choose to use XGBoost instead of Random Forest for a particular machine learning task?

XGBoost vs Random Forest: Choice

Xgboost vs Random Forest

How does random forest generate the forest? Additionally, why would we use it over other algorithms such as logistic regression?

What happens when you average the output on multiple decision trees?

What happens when you average the output on multiple decision trees?

Average Trees

Random Forest Explanation

What is the difference between Logistic and Linear Regression?

When would use one instead of the other in practice?

What is the difference between Logistic and Linear Regression?

Linear vs Logistic Regression

Let’s say that you work at a B2B SAAS company that’s interested in testing the pricing of different levels of subscriptions.

Your project manager comes to you and asks you to run a two-week-long A/B test to test an increase in pricing.

How would you approach designing this test? How would you determine whether the increase in pricing is a good business decision?

Testing Price Increase

A/B Testing

Tell me about a project in which you had to clean and organize a large dataset.

Describing a real-world data cleaning and organization project

Data Cleaning Experiences

Analytics

What are the key differences between classification models and regression models?

What is the MOST important difference between regression and classification models?

What is the MOST important difference between regression and classification models?

Classification vs Regression

Classification and Regression

Given an array and a target integer, write a function <code>sum_pair_indices</code> that returns the indices of two integers in the array that add up to the target integer. If not found, just return an empty list.

Note: Can you do it on $O(n)$ time?

Note: Even though there could be many solutions, only one needs to be returned.

Example 1:

Input:

<pre tabindex="0" class="chroma"><code>array = [1 2 3 4] 
target = 5 
</code></pre>

Output:

<pre tabindex="0" class="chroma"><code>def sum_pair_indices(array, target) -&gt; [0 3] or [1 2]
</code></pre>

Example 2:

Input:

<pre tabindex="0" class="chroma"><code>array = [3]
target = 6 
</code></pre>

Output:

<pre tabindex="0" class="chroma"><code>Do NOT return [0 0] as you can&#39;t use an index twice.
</code></pre>

Given an array and a target integer, write a function that returns the indices of two integers in the array that add up to the target integer.

Target Indices

Let’s say that your company is running a standard control and variant AB test on a feature to increase conversion rates on the landing page. The PM checks the results and finds a .04 p-value.

How would you assess the validity of the result?

Experiment Validity

Let’s say that you work at a bank that wants to build a model to detect fraud on the platform.

The bank wants to implement a text messaging service in addition that will text customers when the model detects a fraudulent transaction in order for the customer to approve or deny the transaction with a text response.

How would we build this model?

Let’s say that you work at a bank that wants to build a model to detect fraud on the platform.

The bank wants to implement a text messaging service that will text customers when the model detects a fraudulent transaction in order for the customer to approve or deny the transaction with a text response.

Which statement is true?

Let's say that you work at a bank that wants to build a model to detect fraud on the platform.

The bank wants to implement a text messaging service that will text customers when the model detects a fraudulent transaction in order for the customer to approve or deny the transaction with a text response.

Which statement is true?

Let’s say you work at Allstate. Allstate is running <code>N</code> online ads right now. The table <code>ads</code> contains all those ads, ranked by popularity via the <code>id</code> column (e.g., the entry with <code>id = 1</code> is the most popular, etc.).

Create a subquery or common table expression named <code>top_ads</code> containing the top 3 ads (by popularity) and return the number of rows that would result from the following operations

<ol>
<li><code>ads INNER JOIN top_ads</code></li>
<li><code>ads LEFT JOIN top_ads</code></li>
<li><code>ads RIGHT JOIN top_ads</code></li>
<li><code>ads CROSS JOIN top_ads</code></li>
</ol>

Note: Please make the <code>join_type</code> column in your output have the values <code>inner_join</code>, <code>left_join</code>, etc. for each of their respective join types

Note: Please return only one query with each number in a different row

Example:

Input:

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>
Output:

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>join_type</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>number_of_rows</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>

Size of Joins

Given an integer <code>N</code>, write a function that returns a list of all of the prime numbers up to <code>N</code>.

Note: Return an empty list there are no prime numbers less than or equal to <code>N</code>.

Example:

Input:

<pre tabindex="0" class="chroma"><code>N = 3
</code></pre>

Output:

<pre tabindex="0" class="chroma"><code>def prime_numbers(N) -&gt; [2,3]
</code></pre>

How would you convey insights and the methods you use to a non-technical audience?

Making data-driven insights actionable for those without technical expertise

Simple Explanations

What’s the relationship between PCA and K-means clustering?

What does the variable “k” in k-means clustering refer to?

What does the variable "k" in k-means clustering refer to?

Input of K-means

PCA and K-Means

Let’s say you are working on Google Docs. A product manager comes to you and asks how the product is doing. 

What are the top five metrics that you would start tracking to understand the health of Google Docs?

Docs Metrics

Product Sense & Metrics

The Fibonacci sequence is a series of numbers in which each number is the sum of the two preceding ones, usually starting with 0 and 1. It is often used in algorithm examples, and is defined by the following formula: F(n) = F(n-1) + F(n-2), with F(0) = 0 and F(1) = 1.

Your task is to implement the Fibonacci algorithm in three different methods:
1. Recursively
2. Iteratively
3. Using Memoization

Example 1:

Input:

<pre tabindex="0" class="chroma"><code>n = 5
</code></pre>

Output:

<pre tabindex="0" class="chroma"><code>fibonacci(n) -&gt; 5
</code></pre>

Example 2:

Input:

<pre tabindex="0" class="chroma"><code>n = 10
</code></pre>

Output:

<pre tabindex="0" class="chroma"><code>fibonacci(n) -&gt; 55
</code></pre>

The Fibonacci sequence starts as follows: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55…

This question requires the implementation of the Fibonacci sequence using three different methods: recursively, iteratively, and using memoization.

Implementing the Fibonacci Sequence in Three Different Methods

Let’s say you’re a data engineer at Fidelity Investments, and you’re running a SQL query on a cloud-based data warehouse. All cluster resources and network health metrics look normal, but the query is still taking over 10 minutes to complete.

How would you go about diagnosing and improving the performance of this query?

How would you diagnose and speed up a slow SQL query when system metrics look healthy?

Slow SQL Query

Query Optimization

How would you tackle multicollinearity in multiple linear regression?

Multicollinearity in Regression

Given the <code>employees</code> and <code>departments</code> table, write a query to get the top 3 highest employee salaries by department. If the department contains less that 3 employees, the top 2 or the top 1 highest salaries should be listed (assume that each department has at least 1 employee). 

Note: The output should include the full name of the employee in one column, the department name, and the salary. The output should be sorted by department name in ascending order and salary in descending order. 

Example:

Input:

<code>employees</code> table

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>first_name</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>last_name</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>salary</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>department_id</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>
<code>departments</code> table

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>
Output:

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>employee_nam</code>e</td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>department_name</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>salary</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>

Challenge

Rate : CAD$90-100/hr INC What You'll Do <ul><li>Architect and implement advanced deep learning models for multimodal recommendation systems, processing diverse data types including text, images, user behavior, item features, offer data, and contextual signals. </li><li>Lead the development and optimization of generative AI applications for personalized product discovery, search enhancement, and customer engagement. </li><li>Expert in leveraging cutting-edge GenAI techniques, prompt engineering, transformer architectures, and own end-to-end development of scalable AI/ML pipelines </li><li>Design, build, and maintain highly scalable, robust, and efficient cloud infrastructure using Google Cloud Platform (GCP) services, including Vertex AI, BigTable, BigQuery, AlloyDB, and Cloud Composer. </li><li>Develop automation and orchestration of ML pipelines, integrating data ingestion, feature engineering, training, and deployment processes. </li><li>Collaborate with cross-functional teams to understand their needs and build solutions that improve platform usability, scalability, and the overall development experience. </li><li>Optimize data processing pipelines and cloud resources to ensure low-latency, cost-effective operation. </li><li>Implement monitoring, alerting, and failover strategies to ensure platform reliability. </li><li>Stay updated with industry trends and best practices in cloud engineering, data engineering, and machine learning </li></ul><li></li> Required Qualifications <ul><li>Master's or PhD in Computer Science, Machine Learning, or related field. </li><li>8+ years of experience in machine learning engineering, with a focus on recommendation systems or personalization. </li><li>Strong expertise in deep learning frameworks (PyTorch or TensorFlow) and building production-grade ML systems. </li></ul> <ul><li>Proven experience with GCP services and ML infrastructure at scale. </li><li>Proficient in Python, SQL, and cloud-native development. </li><li>Experience with containerization (Docker) and orchestration (Kubernetes). </li><li>Track record of deploying ML models to production at scale. </li></ul> Preferred Qualifications <ul><li>Experience with multimodal deep learning architectures and generative AI models. </li><li>Knowledge of modern recommendation system architectures (transformers, neural collaborative filtering). </li><li>Expertise in building real-time inference systems. </li><li>Experience with distributed computing frameworks (Spark) and big data processing. </li></ul> Familiarity with Apache Airflow (Cloud Composer) and CI/CD pipelines.

Position: Data Engineer (GCP)Location: Spain (Remote).Duration: Permanent/Freelance DescriptionWe are seeking an experienced Cloud Data Engineer with strong expertise in designing, developing, and deploying cloud‑based data solutions on Google Cloud Platform (GCP). The ideal candidate will have deep technical skills in data pipelines, BigQuery, SQL, Python, Airflow, and enterprise cloud architectures. Key Responsibilities<ul><li>Design, develop, and deploy high‑performance data pipelines for streaming and batch data sources.</li><li>Build and maintain data lakes and data warehouses on GCP with focus on quality, security, scalability, and reliability.</li><li>Design enterprise cloud solutions and support customer project implementations.</li><li>Work with BigQuery, SQL optimization, data ingestion, data tokenization, and Airflow orchestration.</li><li>Write high‑quality Python code, including data structures, algorithms, and large‑scale system design.</li><li>Automate infrastructure provisioning using DevOps and CI/CD tools.</li><li>Implement production‑grade cloud and big‑data solutions using managed services.</li><li>Collaborate with data scientists, analysts, and software engineers to meet data needs effectively.</li><li>Validate and optimize SQL queries for performance and cost efficiency.</li><li>Optional: Develop Looker dashboards and work on real‑time streaming architectures with strong event‑delivery semantics.</li></ul> Required Skills (Must-Have)(3–5 years each)<ul><li>Python – Mandatory</li><li>BigQuery – Mandatory</li><li>SQL – Mandatory</li><li>Airflow</li><li>GCP – Google Cloud Platform</li><li>Data Lakes</li><li>Data Warehouses</li><li>Cloud Data Engineering</li></ul>Additional:<ul><li>Google Cloud Professional Data Engineer Certification</li><li>Fluent communication in English and Spanish</li></ul> Nice to Have<ul><li>Experience in Data Engineering beyond the required stack</li><li>Additional cloud engineering experience with Google Cloud services</li><li>Experience with Looker</li><li>Experience with event‑stream processing and semantics</li><li>Experience in technical consulting</li></ul>

En HAYS colaboramos con un grupo empresarial líder en el sector del transporte de mercancías, pasajeros y logística a nivel nacional, que cuenta con la más amplia gama de servicios de transporte y que actualmente se encuentra en fase de crecimiento y expansión a nivel internacional. Actualmente buscamos un perfil de Data Engineer que se incorpore a su equipo y pueda aportar valor dentro del mismo. ¿Cuáles serán tus funciones? <ul><li>Diseñar, construir y mantener pipelines de ingesta y transformación de datos en Microsoft Fabric (Data Factory, Data Engineering, Lakehouse, Spark).</li><li>Integrar datos procedentes de operaciones, transporte, almacén y sistemas internos para garantizar disponibilidad y calidad.</li><li>Automatizar procesos y modelos de datos orientados a medir eficiencia operativa, trazabilidad de envíos y desempeño de rutas.</li><li>Crear estructuras de datos optimizadas para su uso por equipos de análisis y negocio.</li><li>Monitorizar cargas, optimizar rendimiento y garantizar consistencia en los flujos de datos..</li></ul> ¿Cuáles son los requisitos? <ul><li>Experiencia previa como Data Engineer trabajando con Microsoft Fabric: Lakehouse, Pipelines, Dataflows, Spark y gobernanza de datos.</li><li>Dominio de SQL, modelado de datos y procesos ETL/ELT.</li><li>Conocimientos en integración de datos procedentes de entornos operativos (TMS, WMS, ERPs).</li><li>Capacidad para estructurar y documentar soluciones de forma clara y replicable.</li><li>Valorable experiencia en Power BI.</li></ul> ¿Qué ofrecemos? <ul><li>Contrato indefinido a través de Hays.</li><li>Salario competitivo.</li><li>Trabajo híbrido (60% presencial - 40% remoto).</li><li>Participación en proyectos punteros y expansión al ámbito internacional.</li><li>Horario flexible.</li><li>Ubicación: Madrid sur.</li></ul> Estamos buscando perfiles con criterio técnico, enfoque práctico y pasión por la ingeniería de datos. Si te interesa el reto, ¡inscríbete para que podamos contarte más!

Your new company Our client in Maritime transportation is looking for a Lead AI/ Data Analyst to join their team. Your new role <ul><li>Design and deliver enterprise analytics solutions, ensuring strong data models, quality, and reporting standards.</li><li>Lead development and deployment of AI solutions including copilots, predictive models, and automation.</li><li>Translate business needs into measurable AI and analytics use cases with reliable, explainable outputs.</li><li>Drive enterprise Power BI adoption, governance, performance optimization, and self‑service analytics readiness.</li><li>Mentor analysts, uplift technical capabilities, and ensure high‑quality delivery across analytics and AI initiatives.</li><li>Partner with stakeholders and vendors to translate requirements, manage delivery, and communicate progress and value.</li></ul> What you'll need to succeed <ul><li>Bachelor’s degree in Data Science, Computer Science, Engineering, Information Systems, or equivalent.</li><li>5+ years’ hands‑on experience in data analytics, BI, or AI roles.</li><li>2–3 years’ experience in a senior or lead technical capacity.</li><li>Strong Power BI skills, including DAX, modelling, optimization, and governance.</li><li>Solid background in data integration, data modelling, and modern analytics platforms.</li><li>Experience with AI tools, automation, predictive models, or copilots is a strong advantage.</li></ul> What you'll get in return In return, you'll be part of an organization that values its employees. You’ll be rewarded with:<ul><li>Structured career growth and plenty of developmental opportunities</li><li>Dynamic working environment</li></ul> What you need to do now If you're interested in this role, click 'apply now' or for more information and a confidential discussion on this role or to find out about more opportunities in Technology, contact Yuki Cheung or email yuki.cheung@hays.com.sg. Referrals are welcome. At Hays, we value diversity and are passionate about placing people in a role where they can flourish and succeed. We actively encourage people from diverse backgrounds to apply. EA Reg Number: R22110258 | EA License Number: 07C3924 | Company Registration No: 200609504D

Your new company:This company specializes in service supply chain optimization, providing software and services that ensure spare parts are available at the right time, in the right place, and at the optimal cost. Tasks<ul><li>Design and optimize advanced, customized data models to support business processes within the international Finance organization.</li><li>Act as the link between development teams and Product Owners at the operational level.</li><li>Build scalable finance data models and data structures using modern development tools (Google Cloud Platform, BigQuery, Dataform).</li><li>Define and document automation solutions aimed at improving and streamlining financial processes.</li><li>Monitor, maintain, and continuously enhance implemented solutions.</li><li>Collaborate with Product Owners and Finance stakeholders to translate business requirements into robust data products and analytical solutions.</li><li>Work cross-functionally to solve technical challenges, refine methodologies, and continuously improve development processes.</li></ul> Your Profile<ul><li>Degree in IT, business, engineering, or equivalent training/experience.</li><li>Previous experience in data engineering or technology roles, ideally within agile product teams/environments.</li><li>4+ years of experience applying modern development frameworks across Cloud, Hybrid, and On‑Premise environments.</li><li>Strong expertise in data modeling, Google Cloud Platform (or similar technologies), and SQL.</li><li>Knowledge of GitHub, Dataform, Terraform, and Python is a plus.</li><li>Passion for trends in data modeling, software design, and architecture/web services.</li><li>Strong communication skills with peers, technical teams, and business stakeholders.</li><li>Proactive, open-minded, and a strong team player.</li><li>Fluent in English.</li></ul>

????From Hays, we're collaborating with a global leader in digital automation and AI‑powered operational transformation, operating across multiple countries and serving large enterprise customers. They specialise in end‑to‑end digital process optimization, including complex, technology‑driven environments in which information governance, compliance, and risk management are mission‑critical. ????We're looking for an IT Risk / IRM Analyst to help strengthen and operationalize the company’s Information Security Risk Management framework.You will be part of a growing governance team responsible for ensuring security controls, risk mitigation activities, ISO 27001 compliance, and audit readiness across several business units, acting as a bridge between high‑level governance requirements and practical implementation across IT functions. ???? Required Skills & Experience<ul><li>3–5 years of experience in Information Security, IT Audit, or IT Risk Management.</li><li>Strong practical knowledge of ISO 27001 (implementation, management, or auditing).</li><li>Familiarity with ISO 31000 / ISO 27005 risk methodologies.</li><li>Experience with GRC tools (Archer or similar).</li><li>Advanced level of English (fluency).</li><li>Experience engaging with senior IT stakeholders and cross‑functional teams.</li><li>Strong analytical mindset, autonomy, and clear communication skills.</li><li>ISO 27001 Lead Implementer/Auditor certification is highly valued.</li></ul> ???? Key Responsibilities<ul><li>Conduct systematic IT Risk Assessments in complex, multi‑entity environments.</li><li>Align all risk management activities with the organisation’s IRM framework.</li><li>Support and monitor the implementation and effectiveness of ISO 27001:2022 Annex A controls.</li><li>Develop and follow up on risk treatment plans with IT and Security teams.</li><li>Ensure accurate scoping and classification of IT assets following CIA principles.</li><li>Act as a key contact for internal and external audits, ensuring evidence collection and compliance reporting.</li><li>Collaborate with application owners, governance teams, architecture, and security stakeholders.</li></ul> ???? What we offer <ul><li>Full-time opportunity with Perm/Freelancer contract.</li><li>Flexibility to work 100% remotely or hybrid in one of the offices in Madrid, Barcelona, Córdoba or Coruña.</li><li>Chance to work in a high‑impact global technology environment, driving governance and security maturity.</li><li>Exposure to advanced automation, AI‑driven processes, and highly scalable digital platforms.</li></ul> ????If you are interested and want to contribute to a modern, innovation‑driven global organisation, please apply to this offer with your CV, so we can contact you for more information.

ESG Reporting Analyst (Group) Reporting to: Director of Compliance and ESG Office Location: Triton Street, London Role Objectives Are you passionate about sustainability, integrity, transparency, and driving positive change across our global operations? We’re seeking a dynamic and detail-oriented Group ESG Reporting Analyst to champion Hays’ Responsible Business programme. This is a pivotal role that ensures our ESG and compliance data is robust, accurate, and aligned with leading standards and frameworks, supporting performance monitoring, regulatory reporting, and continuous improvement. This role would also suit someone with a Financial Analyst or Internal Audit Background looking for a change. Reporting to the Director of Compliance & ESG, you will be responsible for maintaining and enhancing the global ESG and compliance management systems. You’ll play a key part in ensuring our data supports transparency, investor confidence, and regulatory obligations, while contributing to the organisation’s sustainability journey. Key Results / Areas In this role, you will work closely with global and regional teams, supporting the development, implementation, and monitoring of ESG and compliance data processes. Your responsibilities will include, but are not limited to: Strategy, Governance, and Frameworks <ul><li>Develop, maintain and update records to demonstrate Hay’s compliance and performance across environmental, social, and governance dimensions. </li><li>Support the alignment of Hays’ ESG and compliance management systems evidence base with established global standards and frameworks. </li><li>Develop and maintain dashboards/scorecards to track effectiveness, benchmark against objectives, and meet RFP requirements. </li></ul>Data Collection and Analysis <ul><li>Coordinate global data collection for key programme metrics, including sustainability indicators, labour rights, ethics, and other ‘ESG’ topic areas. </li><li>Analyse programme metrics to identify trends, gaps, and emerging risks. </li><li>Produce clear, actionable reports for the Board, ELT, and external stakeholders, supporting transparency and investor confidence. </li></ul>Monitoring and Reporting <ul><li>Support and oversee the timely completion of investigations, ensuring findings are documented and procedures are consistently followed. </li><li>Provide evidence and data for internal/external audits, certification reviews, ESG ratings, and regulatory enquiries. </li><li>Support alignment with global ESG frameworks and contribute to Hays’ sustainability disclosures and non-financial reporting obligations. </li></ul>Continuous Improvement and Risk Management <ul><li>Monitor the effectiveness of programme controls, regularly updating assessments to ensure they remain fit for purpose. </li><li>Identify and communicate emerging risks and opportunities for improvement. </li></ul>Training and Awareness <ul><li>Support the development and delivery of training and communication initiatives to enhance awareness of Hays’ Responsible Business programme across the organisation. </li></ul> Knowledge, qualifications and experience Education <ul><li>Degree or equivalent qualification in a related field preferred, including data science, statistics, mathematics, finance, accounting, economics, sustainability, environmental science or law. </li></ul>Work Experience <ul><li>Experience in ESG reporting, compliance, audit, finance or risk management within a large, complex organisation. </li><li>Knowledge of key ESG and compliance frameworks and standards. </li><li>Experience in data analysis, reporting, and dashboard development. </li></ul> Skills and Competencies Required Knowledge, Skills, and Abilities <ul><li>Strong analytical skills and attention to detail. </li><li>Organised, methodical and diligent. </li><li>Ability to interpret and communicate complex data clearly and effectively. </li><li>Well-developed interpersonal skills; able to interact with stakeholders at all organisational levels. </li><li>Time and project management skills, including the ability to manage time well, prioritise effectively, and handle multiple deadlines. </li><li>Experienced with data management systems and reporting tools. </li><li>Ability to handle confidential and sensitive information with discretion. </li></ul>Additional Requirements <ul><li>Some international travel may be required. </li><li>The statements contained in this role specification are not necessarily all-inclusive; additional duties may be assigned, and requirements may vary from time to time. </li></ul> At Hays, we share a passion for creating a culture of opportunities for our people to flourish and succeed, whatever your background. We know that diversity of perspective and an inclusive approach, which encourages those experiences and views to be heard, is great for business and therefore your career.

Desde Hays Chemicals Barcelona, estamos colaborando con una compañía multinacional distribuidora química ubicada en los alrededores de Barcelona, que precisa incorporar un Product Manager en su BU de Food. Tu nuevo puesto Como Product Manager te encargarás de: <ul><li>Gestión y desarrollo de representadas nacionales e internacionales.</li><li>Soporte al equipo comercial.</li><li>Posicionamiento y actualización del portfolio de productos.</li><li>Control de stock y rotación de productos.</li></ul> Qué necesitarás para encajar con el puesto <ul><li>Estudios de Ciencia y Tecnología de los Alimentos, Business o similares.</li><li>Al menos 3 años de experiencia en puesto de Product Manager enfocado a representadas.</li><li>Inglés alto.</li><li>Disponibilidad para viajar.</li></ul> Qué obtendrás a cambio Posibilidad de pertenecer a reconocida empresa del sector con planes de carrera.

About the jobOur client in banking is looking for a Chief Data Officer to join their team. Your new roleAs a Chief Data Officer, you will be responsible for:<ul><li>Leads the regional data strategy aligned with Asia Pacific business and Head Office direction.</li><li>Drives data governance, regulatory compliance, and adoption of data standards across all markets.</li><li>Ensures data quality, availability, accuracy, consistency, and security organisation‑wide.</li><li>Oversees design and deployment of the regional enterprise data platform and cloud/hybrid solutions.</li><li>Advances analytics, AI/ML, and data‑driven decision‑making to unlock business value and innovation.</li><li>Partners with regional, country, and Head Office stakeholders to scale data capabilities and represent company externally.</li><li>Builds a strong data culture through leadership, talent development, and organisation-wide data literacy.</li></ul> What you’ll need to succeed<ul><li>Bachelor’s or Master’s degree in Computer Science, or related field, with 20+ years of industry experience </li><li>Extensive experience in data governance and building enterprise‑grade data and analytics platforms for banks.</li><li>Strong understanding of Asia‑Pacific data regulations and compliance requirements.</li><li>Proficient in modern cloud architectures, data platforms, and AI/ML technologies.</li><li>Strategic thinker with a hands‑on, solutions‑driven approach.</li><li>Strong leadership, communication, and stakeholder engagement capabilities.</li><li>Proven track record driving data‑driven transformation and enabling business growth through insights.</li></ul> What you'll get in returnIn return, you'll be part of an organization that values its employees. You’ll be rewarded with:<ul><li>Structured career growth and plenty of developmental opportunities</li><li>Stable working environment</li></ul> What you need to do nowIf you're interested in this role, click 'apply now' or for more information and a confidential discussion on this role or to find out about more opportunities in Technology contact Yuki Cheung or email yuki.cheung@hays.com.sg. Referrals are welcome. At Hays, we value diversity and are passionate about placing people in a role where they can flourish and succeed. We actively encourage people from diverse background to apply. EA Reg Number: R22110258 | EA License Number: 07C3924 | Company Registration No: 200609504D

📍 Madrid | Modelo híbrido | Sector Servicios / Tecnología💼 Rol: Data Business Analyst🕒 Horario flexible ¿Te motiva transformar datos complejos en conocimiento real que impacta en negocio? ¿Quieres formar parte de un entorno con múltiples sistemas, retos analíticos y autonomía para liderar soluciones end‑to‑end? Estamos buscando un/a Data Business Analyst con cierta experiencia para unirse a un equipo en plena evolución y con un roadmap de datos muy ambicioso. Participarás en proyectos analíticos de alto impacto, conectando negocio y tecnología, y diseñando procesos de datos escalables en entornos cloud. 🎯 Lo que harás<ul><li>Crear e implementar pipelines ETL/ELT desde sistemas corporativos (ERP, CRM, AS/400, etc.).</li><li>Diseñar modelos de datos, capas semánticas y estructuras orientadas a análisis.</li><li>Construir dashboards avanzados en Power BI o Kibana, asegurando coherencia en KPIs.</li><li>Integrar datos desde múltiples plataformas y optimizar bases SQL.</li><li>Participar en iniciativas de gobernanza, calidad y linaje del dato.</li><li>Trabajar junto a equipos de negocio (finanzas, operaciones, ventas) para convertir necesidades en soluciones reales.</li><li>Operar en un entorno Azure, con visión de escalabilidad y eficiencia.</li></ul> 🧩 Requisitos<ul><li>4+ años como Data Analyst / Data Business Analyst.</li><li>Nivel avanzado de SQL y experiencia con Python.</li><li>Conocimiento sólido paquete ELK.</li><li>Experiencia en Azure, modelado de datos y ETL/ELT.</li><li>Conocimiento en Power BI o Kibana.</li><li>Capacidad analítica, visión de negocio y excelente comunicación.</li><li>Muy valorable: experiencia financiera, Elastic, Databricks, ML básico, .NET/PHP para integraciones, inglés B2+.</li></ul> 🚀 Qué ofrecemos<ul><li>Participar en la modernización del ecosistema de datos.</li><li>Autonomía para liderar iniciativas end‑to‑end.</li><li>Impacto directo en la toma de decisiones del negocio.</li><li>Equipo cercano, colaborativo y orientado a innovación.</li></ul> 📩 Si buscas un reto donde tus soluciones realmente se utilicen, queremos conocerte. Escríbeme por privado y te cuento más detalles.

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