Principal .NET Engineer – AWS- Remote within the US
Confirmed on the employer's own hiring board on Nov 12, 2026. First seen by Alion on Nov 11, 2026.
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