AvidXchange Software Engineer Interview Questions + Guide in 2025

AvidXchange is a leading provider of accounts payable automation software and payment solutions for middle-market businesses.

The Software Engineer role at AvidXchange involves building top-tier software products while collaborating closely with cross-functional teams such as Product Management and Architecture. Key responsibilities include performing full life cycle application development, enhancing existing applications, and designing both low-level and high-level architecture. Candidates will implement API integrations to ensure seamless data exchanges, develop modern data pipelines, and utilize event-driven architectures for improved real-time data processing.

The ideal candidate should possess strong proficiency in .NET technologies, particularly .NET 8.0 and C#, along with a deep understanding of SaaS application development. Familiarity with cloud platforms, especially Azure, as well as DevOps principles like CI/CD, is essential. A great fit for this position embodies AvidXchange's core values of being Connected as People, Growth Minded, and Customer Obsessed, and demonstrates a passion for leveraging technology to solve complex business problems.

This guide will equip you with the insights needed to prepare effectively for your software engineering interview at AvidXchange, enhancing your confidence and performance.

The interview process for a Software Engineer at AvidXchange is structured to assess both technical skills and cultural fit within the company. It typically consists of two main stages, ensuring candidates are well-rounded and aligned with AvidXchange's values.

1. Initial Phone Interview

The first step in the interview process is a phone interview, which usually lasts about an hour. This conversation is typically conducted by a recruiter and focuses on your background, technical skills, and understanding of the role. Expect to discuss your experience with relevant technologies, as well as your approach to problem-solving and collaboration. This is also an opportunity for you to learn more about AvidXchange's culture and values, which emphasize being connected as people, growth-minded, and customer-obsessed.

2. Onsite Interview

Following a successful phone interview, candidates are invited for an onsite interview, which can last several hours. This stage is more intensive and consists of multiple rounds, typically involving both technical and behavioral assessments. You may meet with a panel of interviewers, including managers and fellow developers. The technical portion will likely cover algorithms, data structures, and specific technologies relevant to the role, such as .NET, APIs, and cloud platforms. The behavioral interviews will assess your interpersonal skills, teamwork, and alignment with AvidXchange's core values.

During the onsite interview, you may also be asked to participate in coding exercises or whiteboard sessions to demonstrate your problem-solving abilities in real-time. Additionally, there may be discussions about your past projects and how you approach software development challenges.

As you prepare for your interview, it's essential to be ready for both technical and behavioral questions that reflect AvidXchange's commitment to innovation and collaboration.

Next, let's delve into the specific interview questions that candidates have encountered during the process.

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

Understand the Interview Structure

AvidXchange typically conducts a two-stage interview process, starting with a phone interview followed by an onsite interview. The phone interview often focuses on technical skills, while the onsite interview includes both technical and behavioral components. Familiarize yourself with this structure so you can prepare accordingly.

Prepare for Technical Questions

Given the emphasis on technical skills, particularly in algorithms and data structures, ensure you are well-versed in these areas. Brush up on your knowledge of .NET technologies, RESTful APIs, and event-driven architectures. Practice coding problems that involve hashmaps and other data structures, as these have been highlighted in past interviews.

Showcase Your Problem-Solving Skills

During the technical interview, you may be asked to solve problems on the spot. Approach these questions methodically: clarify the problem, outline your thought process, and communicate your reasoning as you work through the solution. This not only demonstrates your technical ability but also your problem-solving approach.

Emphasize Collaboration and Teamwork

AvidXchange values strong interpersonal skills and the ability to work effectively in a team setting. Be prepared to discuss your experiences collaborating with cross-functional teams, mentoring junior developers, and how you’ve contributed to a positive team dynamic. Highlight specific examples that showcase your ability to connect with others and drive projects forward.

Align with Company Culture

AvidXchange prides itself on a culture of Diversity, Inclusion, and Belonging. Familiarize yourself with their core mindsets: being connected as people, growth-minded, and customer-obsessed. Reflect on how your personal values align with these principles and be ready to discuss how you can contribute to this culture.

Ask Insightful Questions

Prepare thoughtful questions that demonstrate your interest in the role and the company. Inquire about the team dynamics, the technologies they are currently using, or how they approach product development. This not only shows your enthusiasm but also helps you gauge if AvidXchange is the right fit for you.

Follow Up with Gratitude

After the interview, send a thank-you email to express your appreciation for the opportunity to interview. Mention specific points from your conversation that resonated with you. This reinforces your interest in the position and leaves a positive impression.

By following these tips, you can present yourself as a well-prepared candidate who is not only technically proficient but also a great cultural fit for AvidXchange. Good luck!

In this section, we’ll review the various interview questions that might be asked during a Software Engineer interview at AvidXchange. The interview process will likely focus on both technical skills and behavioral aspects, reflecting the company's emphasis on collaboration, problem-solving, and customer-centricity. Candidates should be prepared to demonstrate their technical expertise, particularly in .NET development, as well as their ability to work effectively within cross-functional teams.

Technical Skills

1. Can you explain the differences between REST and SOAP web services?

Understanding the distinctions between these two types of web services is crucial for a Software Engineer, especially when working on API integrations.

How to Answer

Discuss the architectural styles, protocols, and use cases for both REST and SOAP, highlighting their advantages and disadvantages.

Example

"REST is an architectural style that uses standard HTTP methods and is generally more lightweight and easier to use than SOAP, which is a protocol that relies on XML messaging. REST is stateless and can return data in various formats, while SOAP is more rigid and requires XML. For example, I prefer REST for web applications due to its simplicity and performance."

2. Describe a situation where you had to optimize a piece of code. What approach did you take?

This question assesses your problem-solving skills and ability to improve existing systems.

How to Answer

Provide a specific example, detailing the problem, the steps you took to optimize the code, and the results of your actions.

Example

"I was tasked with optimizing a data retrieval function that was causing performance issues. I analyzed the query and identified that it was fetching unnecessary data. By implementing pagination and indexing the database, I reduced the load time by 50%, significantly improving user experience."

3. What is your experience with event-driven architecture? Can you provide an example?

Event-driven architecture is increasingly important in modern software development, especially for real-time applications.

How to Answer

Explain the concept of event-driven architecture and share a relevant experience where you implemented it.

Example

"I have implemented event-driven architecture using Kafka in a previous project to handle real-time data processing. By decoupling services and allowing them to communicate through events, we improved system scalability and responsiveness, which was crucial for our analytics dashboard."

4. How do you ensure the security of your applications?

Security is a critical aspect of software development, and AvidXchange will want to know your approach to safeguarding applications.

How to Answer

Discuss best practices for application security, including coding standards, regular audits, and using security frameworks.

Example

"I follow secure coding practices, such as input validation and output encoding, to prevent common vulnerabilities like SQL injection and XSS. Additionally, I conduct regular security audits and use tools like OWASP ZAP to identify potential weaknesses in the application."

5. Can you explain the concept of microservices and its benefits?

Microservices architecture is a key trend in software development, and understanding it is essential for a Software Engineer.

How to Answer

Define microservices and discuss their advantages, such as scalability, flexibility, and ease of deployment.

Example

"Microservices architecture involves breaking down applications into smaller, independent services that can be developed, deployed, and scaled individually. This approach allows for greater flexibility and faster deployment cycles, as teams can work on different services simultaneously without affecting the entire application."

Behavioral Questions

1. Describe a time when you had to work with a difficult team member. How did you handle it?

This question evaluates your interpersonal skills and ability to navigate team dynamics.

How to Answer

Share a specific instance, focusing on your approach to communication and conflict resolution.

Example

"I once worked with a team member who was resistant to feedback. I scheduled a one-on-one meeting to discuss our project goals and listened to their concerns. By fostering open communication, we were able to align our objectives and improve collaboration, ultimately leading to a successful project outcome."

2. How do you prioritize your tasks when working on multiple projects?

Time management is crucial in a fast-paced environment, and AvidXchange will want to know your strategies.

How to Answer

Discuss your approach to prioritization, including tools or methods you use to manage your workload.

Example

"I use a combination of Agile methodologies and task management tools like Jira to prioritize my tasks. I assess the urgency and impact of each task, focusing on high-priority items that align with project deadlines and team goals."

3. Can you give an example of how you contributed to a team project?

This question assesses your teamwork and collaboration skills.

How to Answer

Provide a specific example of your contributions, emphasizing your role and the impact of your work.

Example

"In a recent project, I took the lead on developing a critical API integration. I collaborated closely with the product team to understand requirements and ensured that the API met all specifications. My contributions helped streamline the data flow, which improved the overall efficiency of the application."

4. What motivates you to perform well in your job?

Understanding your motivation can help the interviewer gauge your fit within the company culture.

How to Answer

Share what drives you professionally, whether it's problem-solving, collaboration, or making a difference for customers.

Example

"I am motivated by the challenge of solving complex problems and the opportunity to create impactful software solutions. Knowing that my work can help businesses streamline their processes and improve their operations drives me to perform at my best."

5. How do you stay current with technology trends and advancements?

This question assesses your commitment to continuous learning and professional development.

How to Answer

Discuss the resources you use to stay informed, such as online courses, blogs, or industry conferences.

Example

"I regularly follow tech blogs, participate in online courses, and attend industry conferences to stay updated on the latest trends. I also engage with developer communities on platforms like GitHub and Stack Overflow to learn from others and share knowledge."