C# developer Jobs in USA

The right candidate brings strong C++ proficiency and hands-on experience with vehicle communication protocols.

What You Will Work On

•Implement mobile-to-vehicle communication features — including OTA software updates, key fob management, and diagnostics — across iOS and Android, working within architecture and patterns defined by the feature owners.

• Write and review code that interfaces with ECUs and parses DID/DTC data via CAN bus protocols.

• Apply C++ knowledge to bridge ECU diagnostic specs and firmware interfaces into the mobile layer — reading specs, reasoning about low-level behavior, and flagging integration risks early.

• Contribute to end-to-end quality: unit tests, integration tests, and vehicle-in-the-loop tests on the software buck.

• Participate in code reviews with a high bar, flagging complexity and correctness issues within your areas of contribution.

• Collaborate closely with full-time engineers, vehicle engineering, and firmware teams to understand protocol constraints and translate them into clean, reliable implementations.

Required

• 7+ years of professional software development experience, with at least 3 years in mobile (iOS, Android, or React Native).

• Strong C++ proficiency — memory management, concurrency primitives, low-level debugging. You can read firmware and ECU diagnostic specs without needing a translator.

• Hands-on experience with CAN bus and UDS protocols. You have written production code that interfaces with hardware, not just APIs.

• Proficiency in at least one modern application language (TypeScript, Kotlin, or Swift) alongside C++.

• Ability to work effectively within an established architecture — you execute with high quality inside a defined system and communicate clearly when you see gaps or risks.

• Strong command of version control, code review, CI/CD, and testing practices in a mobile context.

• Experience with automotive diagnostics concepts: DTCs, DIDs, ODX/PDX specifications, or OBD-II tooling.

• Bachelor of Science in Computer Science, Electrical Engineering, Computer Engineering, or equivalent professional experience.

Nice to Have

• Experience with React Native in a production environment.

• Experience with CAN/Vector tooling (CANalyzer, CANoe, or equivalent).

• Experience on a software buck, HIL, or similar physical test environments.

• Familiarity with Datadog, k6, or similar observability and performance tooling.

- Test‑driven development mindset

Experience Level

Expert Level

Job Type & Location

This is a Contract position based out of Troy, MI.

Pay and Benefits

The pay range for this position is $ - $

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
• Medical, dental & vision
• Critical Illness, Accident, and Hospital
• 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available
• Life Insurance (Voluntary Life & AD&D for the employee and dependents)
• Short and long-term disability
• Health Spending Account (HSA)
• Transportation benefits
• Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)

Workplace Type

This is a hybrid position in Troy,MI.

Application Deadline

This position is anticipated to close on May 10, 2026.

h4>About TEKsystems:

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

We’re a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We’re a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We’re strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We’re building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.