Epikso Software Engineer Interview Questions + Guide in 2025

Epikso is an innovative technology company that specializes in developing cutting-edge solutions to meet the evolving needs of businesses in a digital world.

The Software Engineer role at Epikso involves designing, implementing, and maintaining software applications with a focus on real-time and embedded systems. Key responsibilities include developing applications using languages such as C, C++, and Python, specifically for Linux-based environments. Candidates should have a solid understanding of cryptographic algorithms and protocols, as well as experience with networking technologies. A collaborative mindset is essential, as the role requires working closely with cross-functional teams in an Agile environment. Strong verbal and written communication skills are crucial, alongside a positive attitude and a commitment to continuous learning and improvement.

This guide will equip you with the necessary insights and knowledge to effectively prepare for your interview at Epikso, helping you to stand out as a candidate who aligns with the company's values and expectations.

The interview process for a Software Engineer at Epikso is designed to assess both technical skills and cultural fit within the company. The process typically consists of several key stages:

1. Initial Screening

The initial screening is a brief phone interview, usually lasting around 30 minutes. During this call, a recruiter will discuss your background, experience, and interest in the role. They will also provide insights into the company culture and expectations. This is an opportunity for you to express your enthusiasm for the position and clarify any logistical questions regarding relocation or work arrangements.

2. Technical Interview

Following the initial screening, candidates typically undergo one or two technical interviews. These interviews may be conducted via video call and focus on assessing your proficiency in programming languages such as Java, C/C++, and Python, as well as your understanding of web technologies and frameworks like Spring Boot, Angular, and Node.js. Expect questions that evaluate your grasp of object-oriented programming concepts, server-side scripting, REST APIs, and database management with MySQL. You may also be asked to complete a coding challenge or a machine test that involves building a small application or solving algorithmic problems.

3. Behavioral Interview

After the technical assessments, candidates often participate in a behavioral interview. This round typically involves discussions with a hiring manager or director and focuses on your past experiences, teamwork, and problem-solving abilities. Be prepared to share examples of how you've collaborated with cross-functional teams, navigated challenges, and contributed to projects in an Agile or Scrum environment. This is also a chance to demonstrate your communication skills and positive attitude.

4. Final Interview

In some cases, a final interview may be conducted to further evaluate your fit within the team and the company. This round may include more in-depth discussions about your technical expertise, as well as your willingness to learn and adapt to new technologies. It may also involve a review of your work experience and how it aligns with the company's goals and values.

As you prepare for your interviews, consider the specific skills and experiences that will be relevant to the questions you may encounter. Next, let's delve into the types of questions that are commonly asked during the interview process.

Here are some tips to help you excel in your interview.

Understand the Technical Landscape

Given the emphasis on C/C++ and Python for real-time embedded systems development, ensure you have a solid grasp of these languages. Brush up on your knowledge of embedded systems, particularly in a Linux environment. Familiarize yourself with cryptographic algorithms and standards like FIPS 140 and X.509 certificates, as these are likely to come up in discussions. Being able to articulate your experience with these technologies will demonstrate your readiness for the role.

Prepare for Behavioral Questions

Epikso values collaboration and communication, so be prepared to discuss your experiences working in cross-functional teams. Think of specific examples where you contributed to a team project, faced challenges, and how you overcame them. Highlight your positive attitude and willingness to learn, as these traits align well with the company culture.

Practice Common Interview Questions

Based on previous candidates' experiences, expect questions related to object-oriented programming concepts, server-side scripting, and REST APIs. Prepare to explain the differences between interfaces and abstract classes, as well as the purpose of annotations in frameworks like Spring Boot. Practicing these questions will help you feel more confident during the technical rounds.

Be Ready for Practical Assessments

Candidates have reported practical assessments that include coding tests and building small applications. Make sure to practice coding challenges that involve JavaScript, Angular, Node.js, and Express. Familiarize yourself with MySQL as well, as database-related questions may arise. Time management is crucial, so practice coding under time constraints to simulate the interview environment.

Communicate Clearly and Effectively

Given the potential for language barriers in remote interviews, focus on clear communication. If you encounter difficulties understanding questions, don’t hesitate to ask for clarification. This shows your willingness to engage and ensures you provide accurate responses. Additionally, be prepared to articulate your thought process during coding challenges, as interviewers often value how you approach problem-solving.

Follow Up Professionally

After your interview, consider sending a thank-you email to express your appreciation for the opportunity. This not only reinforces your interest in the position but also showcases your professionalism. Mention specific topics discussed during the interview to personalize your message and leave a lasting impression.

By following these tips, you’ll be well-prepared to navigate the interview process at Epikso and demonstrate your fit for the Software Engineer role. Good luck!

In this section, we’ll review the various interview questions that might be asked during a Software Engineer interview at Epikso. The interview process will likely focus on your technical skills, particularly in programming languages, software development methodologies, and system design. Be prepared to discuss your experience with embedded systems, real-time applications, and relevant technologies.

Technical Knowledge

1. What is the difference between an interface and an abstract class in Java?

Understanding the distinctions between these two concepts is crucial for object-oriented programming.

How to Answer

Explain the key differences, such as how interfaces can only declare methods without implementations, while abstract classes can have both abstract and concrete methods.

Example

“An interface is a contract that defines methods without implementations, allowing multiple classes to implement it. An abstract class, on the other hand, can have both abstract methods and concrete methods, providing a base for subclasses to build upon.”

2. Can you explain the SpringBootApplication annotation and its purpose?

This question tests your knowledge of Spring Boot, a popular framework for building Java applications.

How to Answer

Discuss the role of the annotation in enabling auto-configuration, component scanning, and configuration properties.

Example

“The SpringBootApplication annotation is a convenience annotation that combines @Configuration, @EnableAutoConfiguration, and @ComponentScan. It simplifies the setup of a Spring Boot application by automatically configuring beans and scanning for components in the specified package.”

3. Describe your experience with REST APIs. What are some best practices you follow?

This question assesses your understanding of web services and API design.

How to Answer

Mention your experience in designing, implementing, and consuming RESTful services, along with best practices like using proper HTTP methods and status codes.

Example

“I have developed several REST APIs using Spring Boot, ensuring to follow best practices such as using appropriate HTTP methods, providing meaningful status codes, and implementing proper error handling to enhance the API's usability.”

4. What are some common cryptographic algorithms you have worked with?

This question evaluates your knowledge of security practices in software development.

How to Answer

List the algorithms you are familiar with and briefly describe their use cases.

Example

“I have experience with AES for symmetric encryption, RSA for public-key encryption, and SHA-256 for hashing. These algorithms are essential for securing data in transit and at rest, ensuring confidentiality and integrity.”

5. How do you approach debugging a real-time embedded application?

This question tests your problem-solving skills and experience with embedded systems.

How to Answer

Discuss your debugging process, including tools and techniques you use to identify and resolve issues.

Example

“When debugging a real-time embedded application, I start by replicating the issue and using tools like GDB for step-through debugging. I also analyze logs and system performance metrics to pinpoint the root cause of the problem.”

Software Development Practices

1. What is your experience with Agile methodologies?

This question assesses your familiarity with Agile practices in software development.

How to Answer

Share your experience working in Agile teams, including your role and contributions.

Example

“I have worked in Agile teams for over three years, participating in daily stand-ups, sprint planning, and retrospectives. I find that Agile methodologies enhance collaboration and allow for quicker iterations based on user feedback.”

2. Can you explain the concept of Test-Driven Development (TDD)?

This question evaluates your understanding of software testing practices.

How to Answer

Define TDD and explain its benefits in the software development lifecycle.

Example

“Test-Driven Development is a software development approach where tests are written before the actual code. This ensures that the code meets the requirements from the start and helps catch bugs early in the development process.”

3. How do you ensure code quality in your projects?

This question tests your commitment to maintaining high standards in your work.

How to Answer

Discuss the practices you follow to ensure code quality, such as code reviews, automated testing, and adherence to coding standards.

Example

“I ensure code quality by conducting regular code reviews with my peers, using static analysis tools to catch potential issues, and writing unit tests to validate functionality. This collaborative approach helps maintain high standards across the team.”

4. Describe a challenging project you worked on and how you overcame obstacles.

This question assesses your problem-solving skills and resilience.

How to Answer

Share a specific project, the challenges faced, and the strategies you employed to overcome them.

Example

“In a recent project, we faced tight deadlines and resource constraints. I prioritized tasks, communicated effectively with the team, and leveraged existing libraries to expedite development. This approach allowed us to deliver the project on time without compromising quality.”

5. How do you stay updated with new technologies and industry trends?

This question evaluates your commitment to continuous learning.

How to Answer

Discuss the resources you use to keep your skills current, such as online courses, tech blogs, or community involvement.

Example

“I stay updated by following industry blogs, participating in online courses, and attending tech meetups. I also engage with developer communities on platforms like GitHub and Stack Overflow to learn from others and share knowledge.”