EPB Software Engineer Interview Guide 2026

What is a Software Engineer at EPB?

As a Software Engineer at EPB, you play a vital role in driving the technological innovation that underpins our commitment to providing exceptional utilities and services to our community. This position involves developing and maintaining software solutions that enhance our operational efficiency and improve the customer experience. Your work will directly impact the functionality of systems that manage everything from energy distribution to customer service platforms.

The complexity of the systems you'll be working with reflects the scale at which EPB operates. You'll engage with cross-functional teams to solve challenging problems, ensuring that our technology aligns with the strategic goals of the organization. The role is not only about writing code; it’s an opportunity to influence the success of projects that affect thousands of users and contribute to the sustainability goals of the company.

Common Interview Questions

In preparing for your interview, expect to encounter a variety of questions that assess both your technical capabilities and your soft skills. The following questions are drawn from 1point3acres.com and are representative of what you may face. While the specific questions may vary by team, they will illustrate key patterns in the interview process.

Technical / Domain Questions

This category tests your foundational knowledge and practical application of relevant technologies.

Explain the principles of object-oriented programming and how they apply to C#.
What are the key features of .NET Core, and how do they differ from previous versions?
Describe a challenging technical problem you faced and how you resolved it.
How do you ensure code quality during development?
Can you discuss your experience with database management systems?

System Design / Architecture

Expect to demonstrate your understanding of software architecture and system design principles.

Design a system for managing customer queries in a utility company.
How would you approach scaling an application to handle increased user demand?
Discuss trade-offs between microservices and monolithic architectures.

Behavioral / Leadership

These questions assess your soft skills and cultural fit within EPB.

Describe a time you had to resolve a conflict within a team.
How do you prioritize tasks when working on multiple projects?
What motivates you to succeed in your role?

Problem-Solving / Case Studies

Be prepared to showcase your analytical thinking and problem-solving skills.

Given a scenario where a system is underperforming, how would you approach diagnosing the issue?
How would you handle a situation where a project is at risk of missing its deadline?

Coding / Algorithms

If applicable to the role, you may be asked to solve coding problems.

Write a function to reverse a linked list.
How would you implement a search algorithm to find an element in a sorted array?

See every interview question for this role

Practice questions from our question bank

Curated questions for EPB from real interviews. Click any question to practice and review the answer.

Easy

Coding

Reverse a Singly Linked List

Problem At Stripe, a service stores event sequences as singly linked lists. Write a function that reverses a singly linked list and returns the new head. ...

Linked Lists

Recursion

Easy

Coding

Systematic Debugging for Complex Bugs

Explain a structured debugging approach: reproduce, isolate, inspect signals, test hypotheses, and verify the fix.

Hash Tables

Searching

Medium

Coding

Synchronous vs Asynchronous Programming

Explain the differences between synchronous and asynchronous programming paradigms.

Easy

Coding

Debugging and Troubleshooting Code

Explain a structured debugging process, how to isolate bugs, and how to prevent similar issues in future code.

Arrays

Hash Tables

Easy

Coding

Optimizing Time and Space Complexity

Explain how to improve coding solutions by reducing time complexity first, then balancing space trade-offs.

Arrays

Hash Tables

Greedy

Easy

Coding

Compare Programming Language Strengths

Explain how to compare programming languages by syntax, performance, ecosystem, and interview suitability.

Arrays

Strings

Easy

Pipelines

Reduce CI/CD Pipeline Bottlenecks

Design a CI/CD telemetry pipeline that surfaces developer bottlenecks, flaky tests, and queue delays across GitHub Actions, Jenkins, and Argo CD.

Infrastructure

Quality

Tools

Medium

SQL & Data Manipulation

Understanding Database Indexing Purpose

Explain the purpose of using indexes in databases and their impact on query performance.

Medium

SQL & Data Manipulation

Understanding Common Table Expressions (CTEs)

Explain what CTEs are and their advantages in SQL queries.

CTEs

Easy

SQL & Data Manipulation

SQL vs NoSQL Database Tradeoffs

Explain how SQL and NoSQL databases differ in schema, consistency, scaling, and query patterns.

Joins

Aggregations

Data Wrangling

Medium

Coding

C++ Memory Management in Practice

Explain C++ memory ownership, RAII, smart pointers, and common failure modes like leaks and use-after-free.

Math

Medium

Coding

Difference Between Interface and Abstract Class in Java

Explain the differences between interfaces and abstract classes in Java and when to use each.

Arrays

Strings

Hash Tables

+2 more

Easy

Coding

Secure Coding for Federal Systems

Explain secure coding practices for federal software, including input validation, secrets handling, dependency hygiene, and logging controls.

Strings

Hash Tables

Medium

Coding

Understanding Event-Driven Architecture

Explain the principles of event-driven architecture and its key advantages.

Easy

Pipelines

Schedule Recurring Design File Jobs

Design a recurring batch pipeline to process new design files every 15 minutes with dependency management, retries, backfills, and idempotent loads.

Orchestration

Scheduling

Dependencies

Medium

Coding

Understanding Garbage Collection in .NET

Explain how garbage collection works in .NET and its importance in memory management.

Medium

Execution

Enhance Code Quality Through Pair Programming

Develop a plan to implement effective pair programming practices in a remote engineering team to improve code quality and team collaboration.

Medium

SQL & Data Manipulation

Understanding Stored Procedures in SQL

Explain what a stored procedure is and its benefits in SQL databases.

Easy

SQL & Data Manipulation

Understanding Foreign Key Constraints

Explain what a foreign key constraint is and its significance in relational databases.

Easy

Coding

Understanding Constructors in Java

Explain the role of constructors in Java and their key features.

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Getting Ready for Your Interviews

Preparation is key to success in your interviews. Focus on understanding both the technical concepts and the cultural values of EPB. Your ability to articulate your experience and how it relates to the company's goals will be crucial.

Role-related knowledge – This means demonstrating a strong grasp of relevant technologies, particularly C# and .NET Core. Prepare to showcase your technical skills through practical examples.

Problem-solving ability – Interviewers will look for how you approach challenges. Be ready to discuss your thought process in detail and provide examples of past experiences.

Leadership – This includes your ability to communicate effectively and work collaboratively. Show how you can lead discussions, influence decisions, and motivate your team.

Culture fit / values – EPB values innovation, teamwork, and commitment to community service. Prepare to discuss how your personal values align with these.

Interview Process Overview

The interview process at EPB is structured to evaluate both your technical expertise and your fit within the company culture. It typically begins with a screener phone call, followed by a video call with HR to assess your alignment with the company values. You will then participate in a technical interview, which may include coding exercises and system design discussions, before finally attending an on-site technical interview.

Expect the overall process to take about three weeks. The interviews are designed to be rigorous yet supportive, focusing on collaboration and real-world problem-solving. EPB seeks to understand not just your technical skills but also how you will contribute to our team dynamics and culture.

This visual timeline illustrates the stages of the interview process. Use it to plan your preparation and manage your energy throughout the interviews. Note that variations may exist depending on the team and location.

Deep Dive into Evaluation Areas

During your interviews, you will be evaluated on several key areas that reflect your suitability for the Software Engineer role at EPB.

Role-related Knowledge

This area focuses on your expertise in relevant technologies and methodologies. It is crucial for your ability to contribute to projects effectively.

C# Proficiency – Strong understanding of C# syntax, features, and best practices.
.NET Core Familiarity – Experience building applications using .NET Core.
Database Management – Knowledge of SQL and database design principles.

Problem-solving Ability

Your approach to complex problems will be scrutinized. Interviewers will look for structured, logical thought processes.

Analytical Thinking – How you dissect problems into manageable parts.
Creative Solutions – Examples of innovative approaches you’ve taken to address challenges.

Leadership

Demonstrating leadership qualities is essential, even for technical roles. You should show how you can influence and guide teams.

Team Collaboration – Examples of successful teamwork and communication.
Conflict Resolution – Instances where you’ve navigated challenges with colleagues.

Culture Fit / Values

Assessing your alignment with EPB’s values is a critical part of the evaluation process.

Community Engagement – How you prioritize community service in your work.
Innovation Mindset – Examples of how you’ve contributed to innovative solutions.

Key Responsibilities

As a Software Engineer at EPB, your day-to-day responsibilities will include designing, developing, and maintaining software applications that support our operational and customer service goals. You will collaborate with cross-functional teams, ensuring that your solutions are aligned with business objectives and user needs.

Your role will involve:

Developing and testing software applications using C# and .NET Core.
Working closely with product managers and designers to implement user-friendly features.
Participating in code reviews and ensuring the quality of your codebase.
Troubleshooting and resolving issues in existing applications.
Engaging in continuous learning to stay updated with industry trends and technologies.

Role Requirements & Qualifications

To be considered a strong candidate for the Software Engineer position at EPB, you should possess a combination of technical and interpersonal skills.

Must-have skills:
- Proficiency in C# and .NET Core.
- Strong understanding of software development methodologies.
- Experience with database management (e.g., SQL).
Nice-to-have skills:
- Familiarity with cloud platforms (e.g., Azure, AWS).
- Knowledge of front-end technologies (e.g., JavaScript frameworks).
- Experience in agile development environments.

Frequently Asked Questions

Q: What is the typical difficulty level of the interview?
The interview process is considered average in difficulty, but thorough preparation is essential to stand out. Expect a mix of technical and behavioral questions.

Q: How long does the interview process usually take?
Typically, the process spans about three weeks from initial contact to final interviews. This allows for thorough evaluation and consideration.

Q: What differentiates successful candidates?
Successful candidates demonstrate a strong technical foundation, problem-solving skills, and alignment with EPB’s core values. Effective communication and teamwork ability are also crucial.

Q: Is remote work an option?
While the position is primarily based in Chattanooga, TN, EPB may offer flexible working arrangements depending on the role and team dynamics.

Other General Tips

Practice with Real Problems: Engage in coding exercises and system design scenarios to sharpen your skills and boost your confidence.
Align with Company Values: Be prepared to discuss how your personal and professional values align with those of EPB.
Ask Questions: Show your engagement by asking thoughtful questions during interviews, which also helps you gauge fit.

Tip

Always remember to back up your claims with specific examples from your past experiences. This solidifies your credibility and demonstrates your capabilities.

Interview Guides

EPB

What is a Software Engineer at EPB?

Common Interview Questions

Technical / Domain Questions

System Design / Architecture

Behavioral / Leadership

Problem-Solving / Case Studies

Coding / Algorithms

See every interview question for this role

Practice questions from our question bank

Sign up to see all questions

Getting Ready for Your Interviews

Interview Process Overview

Deep Dive into Evaluation Areas

Role-related Knowledge

Problem-solving Ability

Leadership

Culture Fit / Values

Key Responsibilities

Role Requirements & Qualifications

Frequently Asked Questions

Other General Tips

Tip

Summary & Next Steps

See every interview question for this role