Exadel

Senior API Engineer (.NET)

Remote, United States remote Entry Salary not listed
remote Technology & IT Curated
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About the role

Design and build enterprise-class, scalable APIs and services that power internal applications and external partner integrations. Contribute to modern cloud-native platforms, helping architecture evolve toward service-oriented, API-first, and event-driven systems.

Why Join Exadel

We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.

What powers it all? Our people are ambitious, collaborative, and constantly evolving.

About the Client  

The leading provider of vehicle lifecycle solutions, with headquarters in Chicago, enables the companies that build, insure, and replace vehicles to power the next generation of transportation. Its platform delivers advanced mobile, artificial intelligence, and car technologies. It connects a network of 350+ insurance companies, 24,000+ repair facilities, hundreds of parts suppliers, and dozens of third-party data and service providers. The customer's collective solutions enhance productivity and help clients deliver better experiences for end consumers.

What You’ll Do

Design, build, and maintain internal and external RESTful APIs for distributed, multi-tier systems

Apply microservices and service-oriented architecture principles to design scalable systems

Contribute to cloud-native architecture evolution, including event-driven and distributed patterns

Develop and deploy services using Microsoft Azure and modern cloud platforms

Work across API management, messaging, and distributed system layers

Design and optimize data models using T-SQL and relational database principles

Ensure high performance through query optimization and scalable system design

Implement API security, including authentication, authorization, and data protection

What You Bring

Extensive experience in building services using C#, modern .NET/.NET Core, and ASP.NET Core Web API

Strong expertise in RESTful API design and API-first engineering practices

Experience with Cloud Platforms ( Azure, AWS) 

Experience with microservices and service-oriented architecture

Experience in relational database design, T-SQL, stored procedures and functions Experience designing large-scale distributed systems

Hands-on experience with AI-assisted development tooling (e.g., GitHub Copilot, Claude Code, Cursor, or comparable agentic coding tools)

Nice to have 

Familiarity with domain-driven design (DDD) and CQRS patterns

Experience with modern .NET/.NET Core, including .NET 6+ or later, for building scalable API services

Experience with OpenAPI/Swagger for API documentation, contract design, and client integration

English level 

Upper-Intermediate

Legal & Hiring Information

Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more.

Reasonable accommodations are available to enable individuals with disabilities to perform essential functions.

Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs.

Compensation details are shared with candidates at the early stage of the recruitment process.

The offer is not binding until a signed contract is in place.

Your Benefits at Exadel 

Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details.

International projects

In-office, hybrid, or remote flexibility

Medical healthcare

Recognition program

Ongoing learning & reimbursement 

Well-being program

Team events & local benefits 

Sports compensation 

Referral bonuses 

Top-tier equipment provision

Exadel Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Role
Technology & IT API integration Human Resources MySQL Remote Collaboration SQL remote

Likely questions

  1. Tell us about work you have done that is close to the Senior API Engineer (.NET) role.
  2. How would you approach your first 30 days at Exadel?
  3. Which of API integration, Human Resources and MySQL have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you stay organised and communicate clearly when working remotely?

Prepare before the call

  • A recent example that proves your experience with API integration, Human Resources and MySQL.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Senior API Engineer (.NET) role because I can bring practical experience in API integration, Human Resources and MySQL, learn the team quickly, and contribute to the outcomes Exadel needs from this hire.

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