Zayo is a leading provider of mission-critical bandwidth to some of the world's most impactful companies, driving innovations that reshape our society. With a 141,000-mile network spanning North America and Europe, Zayo offers a range of communication infrastructure solutions, including dark fiber, private data networks, and dedicated Internet access, serving sectors such as media, tech, finance, healthcare, and more.

As a Senior Software Engineer at Zayo, you will be immersed in the design, implementation, and maintenance of robust backend solutions using technologies such as Node.js, PostgreSQL, and AWS. Your role will involve seamless integration with platforms like Salesforce, focusing on scalable, high-performance architecture. Expect a collaborative environment where you'll interact with various teams to push innovative solutions and resolve complex technical issues.

Use Interview Query to navigate through the interviewing process at Zayo, gaining insights to excel in your application and secure your place in this dynamic firm.

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 Software Engineer. 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 Software Engineer 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 Software Engineer role is usually conducted through virtual means, including video conference and screen sharing. Questions in this 1-hour long interview stage may revolve around Zayo’s backend systems, AWS services, and Node.js expertise.

In the case of remote roles, take-home assignments regarding API development, database management, and integration with Salesforce may be incorporated. Additionally, your proficiency in writing clean, maintainable code, and solving complex technical issues 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 the Zayo office. Your technical prowess, including programming, database management, and API development 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 Software Engineer role at Zayo.

Quick Tips For Zayo Software Engineer Interviews

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 interview include:

• Deep Understanding of Technologies: Zayo places a high emphasis on technical expertise in Node.js, PostgreSQL, and AWS. Focus on brushing up these areas and be prepared for in-depth technical questions.
• Problem-Solving Skills: Zayo interviews assess your ability to troubleshoot and resolve complex technical issues. Practice solving a variety of technical problems and explaining your thought process clearly.
• Effective Communication: Zayo values communication and collaboration skills, especially since you’ll be working closely with cross-functional teams. Focus on clearly articulating your ideas and working through problems collaboratively during the interview.

Typically, interviews at Zayo Group vary by role and team, but commonly Software Engineer 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. The table ads contains all those ads, ranked by popularity via the id column. 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.

• 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 relatable examples to illustrate its significance in hypothesis testing.

• 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 practical scenarios where each method would be appropriately applied.

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

• What is the difference between Logistic and Linear Regression? Explain the difference between Logistic and Linear Regression. When would you use one instead of the other in practice?

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

What is the average salary for a Software Engineer at Zayo Group?

Q: What does Zayo Group specialize in?

Zayo Group provides mission-critical bandwidth to the world's most impactful companies. Their services include dark fiber, private data networks, wavelengths, Ethernet, and dedicated Internet access. They serve various sectors such as wireless and wireline carriers, media, tech, content, finance, healthcare, and other large enterprises.

Q: What are the key responsibilities for a Senior Backend Software Engineer at Zayo?

Senior Backend Software Engineers at Zayo lead the development of scalable and high-performance backend solutions using Node.js, PostgreSQL, and AWS. They design Salesforce integrations, optimize database management, develop APIs, ensure code quality, and troubleshoot complex technical issues. They closely collaborate with frontend developers, QA engineers, and customers to deliver robust software solutions.

Q: What are the qualifications required for a Software Engineer role at Zayo?

Candidates should have a degree in Computer Science or related fields, or equivalent work experience. A minimum of 10 years in production engineering teams, in-depth knowledge of software architecture, and proficiency in Node.js, PostgreSQL, and AWS services are essential. Strong expertise in Salesforce integration, CI/CD pipelines, and effective problem-solving and communication skills are highly valued.

Q: What does a typical day look like for a Senior Software Engineer at Zayo?

A typical day may involve designing new software features, writing core platform code and unit tests, improving existing code, researching enhancements, collaborating with frontend engineers, interacting with customers to resolve bugs, and reviewing merge requests from other developers.

Q: What benefits does Zayo offer to its employees?

Zayo offers excellent health, dental, and vision insurance, a retirement 401(k) savings plan, fitness membership discounts, and a generous paid time off policy including paid parental leave. They also uphold equal employment opportunities and prohibit discrimination and harassment of any kind.

If you're seeking a role at a company that's instrumental in shaping the future of connectivity and communications, Zayo Group could be the place for you. As a Senior Software Engineer, you'll not only be at the forefront of innovative technology but also have the opportunity to work on critical infrastructure serving influential industries like finance, healthcare, and media. Want to navigate the interview process with confidence? Check out our main Zayo Group Interview Guide for comprehensive insights and preparation resources. Our guides at Interview Query are designed to equip you with the knowledge, confidence, and strategic edge to ace every interview challenge. Dive into our company interview guides for a more in-depth look, and feel free to reach out if you have any questions. Good luck with your interview!