Principal .NET Engineer – AWS- Remote within the US

OEC provides software solutions to those who work in the automotive parts and repair industry. Our solutions make it easier for automotive industry professionals to buy and sell parts, conduct repair research & planning, optimize estimates, improve the parts supply chain, and more. OEC partners with many of the world’s largest manufacturers, dealers and suppliers, shops and repairers, and service providers, giving our customers access to a comprehensive network and a streamlined workflow.

Interview integrity requirement

Candidates must personally complete all interviews and technical assessments. The use of proxies or third-party representatives during any stage of the hiring process is prohibited and will result in disqualification. Final candidates may be required to participate in at least one in-person interview. Some travel for this role is expected. Reasonable accommodations will be provided in accordance with applicable laws.

About the Role

When an OEM can't fill a backordered part, a vehicle sits off the road. Our Backorder Fulfillment product finds that part across the dealer network and automates purchase, payment, shipping and tracking. We're launching with a major global OEM in Europe and expanding next year.

We're unifying our supply chain applications on one cloud-native platform, and you'll help build it from the first commit. Your patterns and code will shape it for years.

What You'll Do

• Build and ship features end to end in .NET, PostgreSQL and AWS serverless (Lambda, EventBridge, SQS)
• Own the design of complex capabilities like multi-market OEM support and payments
• Keep the architecture healthy with clear module boundaries, reliable events and documented decisions
• Lead production readiness: Datadog observability, incident response and root-cause analysis
• Make AI agents central to how the team plans, builds, tests and reviews
• Raise the bar through TDD, thoughtful code review and mentoring

What You Bring

• 10+ years shipping production software, including 3+ at staff, principal or tech-lead scope
• Deep modern .NET/C# expertise: DDD, modular monoliths, CQRS and EF Core with PostgreSQL
• Production experience with AWS serverless and event-driven architecture
• A daily AI-first workflow and ownership of every line AI helps you write
• Strong testing discipline and GitHub-based CI/CD
• Clear written communication, team-first mindset
• CS or related degree, or equivalent experience

Bonus Points

React/TypeScript micro-frontends, Auth0/OIDC, Stripe, data platforms, legacy modernization, or automotive/supply chain experience.

The Details

Remote (US), standard business hours with occasional flexibility for releases or incidents. Camera-on virtual meetings.

What We Offer

• Full benefits starting Day 1: Medical, Dental, and Vision
• 401(k) with company match
• Unlimited Flex Time Off plus 10 company-paid holidays
• Remote-first role with monthly communication stipend
• Professional development programs and tuition assistance
• Employee resource groups and exclusive employee discounts

What makes working at OEC awesome? It varies from employee to employee. For some, it's the flexibility - whether it's remote work or a hybrid or in-person role, OEC takes our teams across multiple time zones and international communities. For others, it's the strong sense of camaraderie and community that celebrates both individuals and team-driven contributions. Or it could be the empowerment and how the team is encouraged to take risks, learn, and grow within a dynamic and supportive environment. But no matter what gets us out of bed in the morning, our whole global community is inspired to be forward thinking and drive innovative solutions for the automotive parts and repair industry.

OEConnection is subject to certain governmental recordkeeping and reporting requirements for the administration of civil rights laws and regulations. In order to comply with these laws, we invite applicants and employees to voluntarily self-identify their gender, race and ethnicity. Submission of this information is strictly voluntary and refusal to provide it will not subject you to any adverse treatment. The information obtained will be kept confidential and may only be used in accordance with the provision of applicable laws, executive orders, and regulations, including those that require the information to be summarized and reported to the federal government for civil rights enforcement. When reported, data will not identify any specific individual. This information will be maintained separately from your application for employment. If you do not wish to self-identify at this time, you may do so in the future by submitting this form. Failure to provide the following information will not subject you to any adverse action or treatment. OEConnection is an Equal Opportunity/ Affirmative Action employer. We provide equal employment opportunities to all qualified employees and applicants for employment without regard to race, religion, sex, age, marital status, national origin, sexual orientation, citizenship status, veteran status, disability or any other legally protected status. We prohibit discrimination in decisions concerning recruitment, hiring, compensation, benefits, training, termination, promotions, or any other condition of employment or career development.