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Novalink Solutions Llc Interview Questions

A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

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<p>Suppose there exists a new airline named Jetco that flies domestically across North America. Jetco recently had a study commissioned that tested the boarding time of every airline, and it came out that Jetco had the fastest average boarding times of any airline.</p>

<p>What factors could have biased this result, and what would you look into?</p>


<p>What could potentially bias the average boarding time in favor of an airline that only flies domestically?</p>

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

Boarding Times Bias

A new airline came out as the fastest average boarding times compared to other airlines.  What factors could have biased this result and what would you look into?

<p>You are testing hundreds of hypotheses with many <em>t</em>-tests. What considerations should be made?</p>


<p>What is a key disadvantage of the F-test when compared to multiple t-tests?</p>

What is a key disadvantage of the F-test when compared to multiple t-tests?

Hundreds of Hypotheses

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

<p>In an A/B test, how can you check if assignment to the various buckets was truly random?</p>


<p>In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?</p>

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

Random Bucketing

A/B Testing & Experimentation

Novalink Solutions Llc Salaries by Position

<h3>Job Description</h3><div>Job Description<div><div>JOB SUMMARY<br /></div><div>Under broad supervision, performs complex administrative duties and statistical, financial, or operational data analysis and reporting in support of management decision making in the functional area. Identifies trends, discrepancies, and variances to improve the efficiency and effectiveness of operations. May partner with other departments, divisions, outside agencies, and vendors to address business issues. Exercises various latitudes of independent judgment. May administer or provide high-level support for various projects, grants, contracts, implementation of procedures, and/or any specialized functions. Assists with orientation, training, or providing task guidance of junior team members. Provides strategic analysis.<br /></div><div><br /></div><div>PRIMARY DUTIES AND RESPONSIBILITIES<br /></div><div>Perform job responsibilities with minimal supervision<br /></div><div>Extract primary data from Oracle Database with the use of SQL<br /></div><div>Interpret data, analyze results using statistical techniques and provide ongoing reports<br /></div><div>Provide timely and accurate data to fulfill internal and external data requests<br /></div><div>Identify, compile, and ‘clean’ data for research projects<br /></div><div>Identify, analyze, and interpret trends or patterns in complex data sets<br /></div><div>Oversee evaluation and research projects<br /></div><div>Communicate the evaluation plan and its details to leadership and stakeholders<br /></div><div>Collaborate with external research partners to ensure understanding of data points and data sets<br /></div><div>Develop and monitor internal and external data requests<br /></div><div>Manage, summarize, and analyze quantitative and/or qualitative data<br /></div><div>Summarize and explain research findings and their implications<br /></div><div>Prepare findings for publication<br /></div><div>Develop, review, and abstract published research<br /></div><div>Produce data visualization dashboards with Tableau<br /></div><div><br /></div><div>MINIMUM QUALIFICATIONS<br /></div><div>Bachelor's degree in a related field from an accredited college or university AND Two years in a related lead or supervisory role OR Associate's degree in a related field from an accredited college or university AND Four years of related experience, Two years of which in a related lead or supervisory role OR Two years of experience at the lower level IT Business Analyst or position equivalent.<br /></div><div><br /></div><div>PREFERRED QUALIFICATIONS<br /></div><div>Strong knowledge of and experience with reporting packages (Business Objects etc), databases (SQL, Oracle, etc), programming (XML, Javascript, or ETL frameworks)<br /></div><div>Significant experience in accessing and extracting data from organizational and/or other institutional databases<br /></div><div>Strong analytical skills with the ability to collect, organize, analyze, and disseminate significant amounts of information with attention to detail and accuracy<br /></div><div>2+ years of relevant work experience in the Criminal Justice field and/or Data <span class="long-word">Management/Analysis</span><br /></div><div>Proficient skills in queries, report writing, and presenting findings<br /></div><div>Experience in data visualization software (i.e., Tableau)<br /></div><br />Requirements<div><div><div><div>Skill<br /></div><div>Required / Desired<br /></div><div>Amount<br /></div><div>of Experience<br /></div></div></div></div><div><div><div>Strong knowledge of and experience with reporting packages (Business Objects etc), databases (SQL, Oracle, etc), programming (XML, Javascript, or ETL<br />Required<br />5<br />Years<br /></div><div>Significant experience in accessing and extracting data from organizational and/or other institutional databases<br />Required<br />3<br />Years<br /></div><div>Strong analytical skills with the ability to collect, organize, analyze, and disseminate significant amounts of information with attention to detail a<br />Required<br />1<br />Years<br /></div><div>2+ years of relevant work experience in the Criminal Justice field and/or Data <span class="long-word">Management/Analysis</span><br />Highly desired<br />2<br />Years<br /></div><div>Proficient skills in queries, report writing, and presenting findings<br />Required<br />3<br />Years<br /></div><div>Experience in data visualization software (i.e., Tableau)<br />Highly desired<br />1<br />Years<br /></div></div></div><div><br /></div><br /></div></div>

<h3>Job Description</h3><div>Job Description<div><p>DG Salesforce<br /></p><p><br /></p><p>The State of Tennessee is seeking an experienced Salesforce Data Engineer to serve as a subject matter expert (SME) and technical authority in designing, implementing, and governing enterprise data solutions across Salesforce platforms. This role will support cross-agency initiatives utilizing Salesforce Public Sector Cloud and other Salesforce Clouds to enhance service delivery and citizen engagement.<br /></p><p>• Design, develop, and maintain scalable data pipelines, extract transform and load (ETL) processes, integrations, and APIs between Salesforce and external systems<br />• Optimize data ingestion and transformation processes in alignment with best practices for Salesforce data architecture.<br />• Define and implement data storage, normalization, and performance strategies across Salesforce instances.<br />• Lead the data modeling strategy across Salesforce Clouds, including Public Sector Cloud, Service Cloud, and Experience Cloud.<br />• Monitor and manage data migration, deduplication, and cleansing efforts to ensure system consistency and integrity.<br />• Design and deploy AI-powered agents that interact with Salesforce data for dynamic decision support, customer service, and workflow automation.<br />• Collaborate with AI/ML specialists to integrate predictive models and generative AI assistants within Salesforce environments (e.g., Einstein GPT or other LLM-based tools).<br />• Coordinate the implementation of data governance frameworks and best practices across client organizations, with a focus on Salesforce data ecosystems.<br />• Work with the Salesforce product owner, business units, and stakeholders to align data governance requirements and strategies.<br />• Support the development and enforcement of data standards, naming conventions, data ownership, and stewardship models including business glossaries, data dictionaries, and metadata for key Salesforce data assets.<br />• Provide documentation and guidance for Salesforce data integrations, data cleansing initiatives, and deduplication strategies.</p><p>Experience:<br /></p><p>Salesforce Platform Developer II (4-6 years)<br /></p><p>Salesforce Certified MuleSoft Developer (4-6 years)<br /></p><p>Salesforce Certified Platform Data Architect (7-9 years)<br /></p><p>Salesforce Certified MuleSoft Platform Architect (7-9 years)<br /></p><div><br /></div><br /></div></div>

<h3>Job Description</h3><div>Job Description<div><p>VDOT’s Business Integrated Solutions Division (BISD) is seeking a highly experienced <b>Business Analyst with extensive experience in Microsoft Dynamics 365 </b>to support the planning and execution of complex ERP projects. This BA will serve as a critical bridge between multiple business stakeholders and technical teams, ensuring that customer needs are clearly understood, documented, and delivered through both Agile and Waterfall methodologies.<br /></p><p><b>Key Responsibilities</b><br /></p><ul><li>Act as the voice of the customer, collaborating with stakeholders and IT teams to understand business processes, pain points, and goals.<br /></li><li>Apply extensive experience with ERP systems and model-driven apps, especially D365 Finance & Supply Chain, to support requirement validation and solution delivery.<br /></li><li>Facilitate workflow-heavy projects involving multiple roles, approval processes, and cross-functional interactions.<br /></li><li>Support data mapping, data migration and data integration requirements across multiple systems and their databases<br /></li><li>Conduct Root Cause Analysis to identify system gaps and recommend business or technical solutions.<br /></li><li>Collaborate with developers and Power Platform teams to ensure model-driven apps meet business requirements and align with D365 architecture.<br /></li><li>Perform QA testing and Support business in UAT testing.<br /></li></ul><p><b>Required Skills & Experience</b><br /></p><p><br /></p><ul><li>10+ years of experience delivering business and data analysis artifacts with a customer-focused approach.<br /></li><li>5+ years supporting Microsoft Dynamics 365 ERP projects.<br /></li><li>Proven experience supporting the development of model-driven apps using Microsoft Power Platform, including requirement gathering and validation.<br /></li><li>Demonstrated experience with full lifecycle ERP implementations, including requirements gathering, configuration support, testing coordination, deployment, and post-go-live support.<br /></li><li>Strong data analysis background, including SQL and organizational data management concepts.<br /></li></ul><div><br /></div><br />Requirements<div><div><div><div>Skill<br /></div><div>Required / Desired<br /></div><div>Amount<br /></div><div>of Experience<br /></div></div></div></div><div><div><div>Proven experience with Microsoft Dynamics 365 modules<br />Required<br />5<br />Years<br /></div><div>Expertise in business process analysis, requirements gathering, and translating business needs into D365 solutions<br />Required<br />5<br />Years<br /></div><div>Strong stakeholder engagement and communication skills to bridge technical teams and business users effectively<br />Required<br />8<br />Years<br /></div></div></div><div><br /></div><br /></div></div>

<h3>Job Description</h3><div>Job Description<div><div>Senior Developer / Data Architect (DA1)<br /></div><div>We would be looking for an experienced Senior Developer / Data Architect who:<br /></div><div>1. Has extensive practical experience with the modern Oracle platforms and<br /></div><div>technologies. This includes the following:<br /></div><div>A. Significant Senior DBA-level experience with regards to designing and<br /></div><div>implementing enterprise class data repositories built upon Oracle on-<br /></div><div>prem and cloud-hosted databases.<br /></div><div>B. Practical experience developing fully automated ETL processes from a<br /></div><div>variety of flat-file and DB sources.<br /></div><div>C. Practical experience utilizing API calls for automated data refreshes.<br /></div><div>D. Practical experience with Oracle Analytics Cloud (OAC)<br /></div><div>E. Mastery of SQL and PL/SQL and the ability to develop complex<br /></div><div>procedures, functions, views, and scripts.<br /></div><div>2. Expertise in dimensional modeling.<br /></div><div>3. Experience with tabular data models.<br /></div><div>4. Proven ability to accurately capture complex business requirements and<br /></div><div>translate those into technical solutions which are robust, performant, scalable,<br /></div><div>reliable, and expandable.<br /></div><div>5. Demonstrates a disciplined approach to process and error logging.<br /></div><div>6. Maintains excellent work habits when it comes to coding comments, system<br /></div><div>documentation, and metadata creation.<br /></div><div>7. Ability to serve as a technical mentor to both senior and junior IT staff.<br /></div><div>8. Ability to develop architectural diagrams and system documentation, and train<br /></div><div>others on the content.<br /></div><div>9. Demonstrates previous success in independently researching technical options<br /></div><div>to find suitable solutions for evolving technical needs.<br /></div><div>10. Works independently towards project and/or assignments goals with limited day-<br /></div><div>to-day oversight and/or prompting.<br /></div><div>Typical Duties: This individual will serve as a daily subject-matter expert for all Oracle<br /></div><div>technologies and toolsets. Much of the work will focus on data modeling and<br /></div><div>developing automated ETL processes that pull data from a variety of data<br /></div><div>sources. However, data assignments will not be limited to these areas. They will be<br /></div><div>expected to develop, monitor, and maintain a variety of automated DB processes. They<br /></div><div>will be expected to research and resolve database issues as they arise. They will be<br /></div><div>assigned a variety of database management and maintenance tasks. They will serve<br /></div><div>as trusted technical advisor to the MaineIT/MaineDOT Application Support team and<br /></div><div>serve as a technical mentor. They will collaborate with other developers, analysts, and<br /></div><div>employed DBAs. They will work closely with IT vendors, IT leadership, and MaineDOT<br /></div><div>business partners. They will play a key role in upcoming system migrations, system<br /></div><div>expansions, and data modernization efforts.<br /></div><div><br /></div><div><br /></div><br />Requirements<div>Top 3 Skills: <br /></div><div>Developing automated ETL.<br /></div><div>Designing & implementing enterprise class data repositories built upon Oracle on prem and cloud hosted DB's.<br /></div><div>Expertise in dimensional modeling and ability to act as a technical mentor.<br /></div><div><br /></div><br /></div></div>

<h3>Job Description</h3><div>Job Description<div><div><div>VDOT - Asset Management Team is looking to fill a Business Analyst position with a candidate with the following skills and Experience<br /></div><div><br /></div><div>5+years of BA Experience in IT projects. Must have strong oral and written communication skills. IT <span class="long-word">software/application</span> project experience required. Looking for a candidate with the specific skills/experience listed below<br /></div></div><div><br /></div><div><br /></div><ol><li><b>Analytical Thinking</b><br /></li></ol><ol><ol><li>Review, Analyze complex process and systems and break them down into manageable parts.<br /></li><li>Has strong problem-solving skills - finds root causes, and not just symptoms.<br /></li></ol></ol><ol><li><b>Technical Proficiency</b><br /></li></ol><ol><ol><li>Familiarity with enterprise software - like, Oracle, SQL Server.<br /></li><li>Understanding of databases (SQL), APIs, Data Flow Diagrams.<br /></li><li>Not necessarily a developer <b>but</b> should have a strong understanding of how IT systems work.<br /></li></ol></ol><ol><li><b>Requirements Gathering Proficiency</b><br /></li></ol><ol><ol><li>Strong experience in conducting stakeholder interviews and workshops.<br /></li><li>Skilled at writing clear, testable, functional, and non-functional requirements.<br /></li><li>Strong familiarity and previous experience with using Azure DevOPS (TFS) for creating and managing agile items - Product backlog, Epics, Features, User Stories, Tasks <b>AND</b> Test Plans and Test Cases.<br /></li><li>Prepare diagrams explaining the modifications so that both technical staff and executive management can visualize and understand what must be done. Experience creating wireframes or visualization examples (Visio) from requirements.<br /></li></ol></ol><ol><li><b>Agile/Waterfall Knowledge</b><br /></li></ol><ol><ol><li>Should be previous experience in working with Agile/Scrum (including SAFe) <b>AND</b> Waterfall projects.<br /></li></ol></ol><ol><li><b>Other Required and demonstrated work skills</b><br /></li></ol><ol><ol><li>Can translate from tech talk (Developers) to business users and business talk (Stakeholders) to developers.<br /></li><li>Writes clear documents and delivers strong presentations. <br /></li><li>Can handle pushback, negotiate priorities, and resolve conflict diplomatically.<br /></li></ol></ol><ol><ol><li>Experience with Business Process Modelling - using/documenting Swim Lane and Flow Chart Diagrams.<br /></li><li>Experience in rolling out new systems/processes and managing user adoption.<br /></li><li>In addition to performing system integration testing (IT Testing), assists with User Acceptance Testing.<br /></li></ol></ol><div><br /></div><br />Requirements<div><div><div><div><div><div><div><div><div><div><div><div><div><div>Skill<br /></div><div>Required / Desired<br /></div><div>Amount<br /></div><div>of Experience<br /></div></div></div></div><div><div><div>Agile Business Analyst; Stong understanding of Scrum concepts and methodologies<br />Required<br />5<br />Years<br /></div><div>Well versed with Scrum and Agile, Scaled Agile and Kanban methodologies<br />Required<br />5<br />Years<br /></div><div>Technical experience in organizing and maintaining sprint and product backlogs<br />Required<br />5<br />Years<br /></div><div>Technical experience translating client and product strategy requirement into application requirements and user stories.<br />Required<br />5<br />Years<br /></div><div>Documenting high level Test Strategy, Test Plans, Test Cases and execution of test cases.<br />Required<br />5<br />Years<br /></div><div>Ability to analyze and document business and system processes.<br />Required<br />5<br />Years<br /></div><div>Prior State of VA IT Business Analyst Experience Strongly preferred<br />Highly desired<br><br></div></div></div></div></div></div></div></div></div></div></div></div></div><div><div><br /></div></div><div><br /></div><br /></div></div>

<h3>Job Description</h3><div>Job Description<div><p><b>Cloudera Data Engineer</b><br /></p><p><b>Job Summary</b><br /></p><p>We are seeking a Cloudera Data Engineer to support the migration of a Medicaid Data Warehouse Implementation in AWS environment. The resource will support the migration and continued operations of an existing <span class="long-word">Cloudera/Hive/Scala</span>-based data pipeline environment from one AWS account to another.<br /></p><p>This position is responsible for ensuring a seamless transition, validating data integrity and job performance, and maintaining reliable daily operations post-migration.<br /></p><p>The role will work closely with the existing project team for the underlying AWS infrastructure (VPC, IAM, S3, EC2, networking). The resource will focus on Cloudera cluster migration, data pipeline reconfiguration, and operational stability.<br /></p><p><b>Key Responsibilities</b><br /></p><ul><li>Replicate and configure existing Cloudera cluster (HDFS, YARN, Hive, Spark) in the new AWS account.<br /></li><li>Coordinate with project team to ensure proper infrastructure provisioning (EC2, security groups, IAM roles, and networking).<br /></li><li>Reconfigure cluster connectivity and job dependencies for the new environment.<br /></li><li>Migrate and validate metadata stores (Hive Metastore, job configs, dependencies).<br /></li><li>Validate job execution and data outputs for parity with existing environment.<br /></li></ul><ul><li>Deploy, test, and operate existing Hive, Spark (Scala) jobs post-migration.<br /></li><li>Maintain job schedules, dependencies, and runtime configurations.<br /></li><li>Monitor job performance, identify bottlenecks, and apply tuning or code-level optimizations.<br /></li><li>Troubleshoot failures and implement automated recovery or alerting where applicable.<br /></li></ul><ul><li>Monitor Cloudera Manager dashboards, cluster health, and resource utilization.<br /></li><li>Manage user roles and access within Cloudera environment.<br /></li><li>Implement periodic data cleanup, archiving, and housekeeping processes.<br /></li><li>Document configurations, migration steps, and operational runbooks.<br /></li></ul><p><b>Required Skills and Experience</b>:<br /></p><p>· Bachelor’s degree in computer science, Information Systems, or a related field.<br /></p><p>· 7+ years of experience in data engineering or big data development<br /></p><p>· 4+ years’ experience with Cloudera platform (HDFS, YARN, Hive, Spark, Oozie)<br /></p><p>· Experience deploying and operating Cloudera workloads on AWS (EC2, S3, IAM, CloudWatch)<br /></p><p>· Strong proficiency in Scala, Java and HiveQL; Python or Bash scripting experience preferred<br /></p><p>· Strong proficiency in Apache Spark & Scala programming for data processing and transformation.<br /></p><p>· Hands on experience with Cloudera distribution of Hadoop.<br /></p><p>· Hands-on experience implementing business-rules processing using Drools.<br /></p><p>· Able to work with infrastructure, DevOps, and data governance teams in a multi-disciplinary environment.<br /></p><p><b>Preferred Qualifications:</b><br /></p><p>· Candidates with Cloudera certification (e.g., CDP Data Engineer or Cloudera Administrator)<br /></p><p>· Experience with Cloudera version upgrades or AWS-to-AWS environment migrations.<br /></p><p>· Experience in public-sector or large enterprise data environments.<br /></p><div><br /></div><br /></div></div>

Question	Topic	Difficulty	Ask Chance
Boarding Times Bias	Statistics	Medium	Very High
Hundreds of Hypotheses	Statistics	Medium	Very High
Random Bucketing	A/B Testing & Experimentation	Medium	Very High

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Novalink Solutions Llc Interview Questions

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