Zayo Group provides mission-critical bandwidth to the world’s leading companies, supporting innovations that transform society. With a 141,000-mile network across North America and Europe, Zayo offers extensive metro connectivity to thousands of buildings and data centers. Their solutions include dark fiber, private data networks, wavelengths, Ethernet, and dedicated Internet access, serving a wide range of sectors including tech, finance, healthcare, and media.

As a Business Analyst Specialist at Zayo, you will play a crucial role in maintaining data integrity within key functions. This involves building and enhancing dashboards, data models, and data pipelines. If you have a passion for data quality, problem-solving, and automation, and possess advanced analytical skills, this role is a great fit for you. To help you prepare, this guide will take you through the interview process, commonly asked questions, and essential tips. Dive in and get ready to excel at Zayo!

Submitting Your Application

The first step is to submit a compelling application that reflects your technical skills and interest in joining Zayo Group as a Business Analyst. Whether you were contacted by a Zayo recruiter or have taken the initiative yourself, carefully review the job description and tailor your CV according to the prerequisites.

Tailoring your CV may include identifying specific keywords that the hiring manager might use to filter resumes and crafting a targeted cover letter. Furthermore, don’t forget to highlight relevant skills and mention your work experiences.

Recruiter/Hiring Manager Call Screening

If your CV happens to be among the shortlisted few, a recruiter from the Zayo Talent Acquisition Team will make contact and verify key details like your experiences and skill level. Behavioral questions may also be a part of the screening process.

In some cases, the Zayo Business Analyst hiring manager stays present during the screening round to answer your queries about the role and the company itself. They may also indulge in surface-level technical and behavioral discussions.

The whole recruiter call should take about 30 minutes.

Technical Virtual Interview

Successfully navigating the recruiter round will present you with an invitation for the technical screening round. Technical screening for the Zayo Business Analyst role usually is conducted through virtual means, including video conference and screen sharing. Questions in this 1-hour long interview stage may revolve around Zayo's data systems, ETL pipelines, and SQL queries.

For Business Analyst roles, take-home assignments regarding product metrics, analytics, and data visualization are incorporated. Apart from these, your proficiency against hypothesis testing, probability distributions, and data quality fundamentals may also be assessed during the round.

Depending on the seniority of the position, case studies and similar real-scenario problems may also be assigned.

Onsite Interview Rounds

Followed by a second recruiter call outlining the next stage, you’ll be invited to attend the onsite interview loop. Multiple interview rounds, varying with the role, will be conducted during your day at Zayo. Your technical prowess, including programming and data modeling capabilities, will be evaluated against the finalized candidates throughout these interviews.

If you were assigned take-home exercises, a presentation round may also await you during the onsite interview for the Business Analyst role at Zayo.

Quick Tips For Zayo Group Business Analyst Interviews

• Should contain three tips for interviewing for this specific company based on interview experiences.

Example:

You should plan to brush up on any technical skills and try as many practice interview questions and mock interviews as possible. A few tips for acing your Zayo Group interview include:

• Understand Zayo’s Data Ecosystem: Zayo questions can often revolve around the infrastructure and data management systems the company uses. Understand Zayo's large data network and focus on how your skills can help improve their data integrity and operation.
• Focus on Data Quality: As Zayo focuses on data-driven decision-making, emphasize your experience with data quality, governance, and analytics in your responses. Be prepared to discuss methodologies for ensuring data accuracy and efficiency.
• Be Problem-Solving Oriented: Highlight your problem-solving skills and how you’ve applied them in real-world scenarios. This role requires a great deal of critical thinking and troubleshooting abilities, so share specific examples where you’ve succeeded.

Typically, interviews at Zayo Group vary by role and team, but commonly Business Analyst interviews follow a fairly standardized process across these question topics.

• - How would you use data to convince a fast-food franchise to purchase another custom Snapchat filter? Snapchat partnered with a fast-food franchise to create a custom filter available for a week. How would you use data from this campaign to persuade the franchise to buy another custom filter this year?

• Write a function missing_number to find the missing number in an array of integers. You have an array of integers, nums of length n spanning 0 to n with one missing. Write a function missing_number that returns the missing number in the array. The complexity should be \(O(n)\).

• Create a function first_uniq_char to find the first non-repeating character in a string. Given a string, find the first non-repeating character in it and return its index. If it doesn't exist, return -1. Consider a string where all characters are lowercase alphabets.

• Develop a function inject_frequency to add the frequency of each character in a string. Given a string sentence, return the same string with an addendum after each character of the number of occurrences a character appeared in the sentence. Do not treat spaces as characters and exclude characters in the discard_list.

• Create a query to count rows resulting from different joins between ads and top_ads. Allstate is running N online ads ranked by popularity. Create a subquery or common table expression named top_ads containing the top 3 ads and return the number of rows resulting from INNER JOIN, LEFT JOIN, RIGHT JOIN, and CROSS JOIN operations. Include a join_type column in your output.

• How would you explain what a p-value is to someone who is not technical? Explain the concept of a p-value in simple terms to someone without a technical background. Use analogies or everyday examples to make it understandable.

• What is the difference between Logistic and Linear Regression? When would you use one instead of the other in practice? Describe the key differences between Logistic and Linear Regression. Provide examples of scenarios where each method would be appropriately applied in practice.

• How would you build a fraud detection model with a text messaging service for transaction approval? You work at a bank that wants to detect fraud on its platform. The bank also wants to implement a text messaging service that will notify customers when a fraudulent transaction is detected, allowing them to approve or deny the transaction via text response. How would you build this model?

• What is the difference between Logistic and Linear Regression, and when would you use each? Explain the differences between Logistic and Linear Regression. Describe scenarios where one would be more appropriate to use than the other in practice.

• What does the backpropagation algorithm do in neural networks, and what is its intuition? Describe the role of the backpropagation algorithm in neural networks. Provide an informal intuition behind the algorithm and discuss some drawbacks compared to other optimization methods. Bonus: Formally derive the backpropagation algorithm and prove its claims.

If you want more insights about the company, check out our main Zayo Group Interview Guide, where we have covered many interview questions that could be asked. We’ve also created interview guides for other roles, such as software engineer and data analyst, where you can learn more about Zayo Group’s interview process for different positions.

At Interview Query, we empower you to unlock your interview prowess with a comprehensive toolkit, equipping you with the knowledge, confidence, and strategic guidance to conquer every Zayo Group Business Analyst position interview question and challenge.

You can check out all our company interview guides for better preparation, and if you have any questions, don’t hesitate to reach out to us.

Good luck with your interview!