{"id":4128022,"url":"https://alion.io/job/oec-principal-net-engineer-aws-remote-within-the-us","title":"Principal .NET Engineer – AWS- Remote within the US","company":{"id":2711527,"name":"OEC","domain":"oeconnection.com","url":"https://alion.io/company/oeconnection","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Dayforce","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"AI Agents","optional":false},{"name":"Amazon EventBridge","optional":false},{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Datadog","optional":false},{"name":"GitHub","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Auth0","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-11-11T05:00:00Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-12T01:45:43Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Interview integrity requirement\nCandidates 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.\nAbout the Role\nWhen 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.\nWe'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.\nWhat You'll Do\nBuild and ship features end to end in .NET, PostgreSQL and AWS serverless (Lambda, EventBridge, SQS)\nOwn the design of complex capabilities like multi-market OEM support and payments\nKeep the architecture healthy with clear module boundaries, reliable events and documented decisions\nLead production readiness: Datadog observability, incident response and root-cause analysis\nMake AI agents central to how the team plans, builds, tests and reviews\nRaise the bar through TDD, thoughtful code review and mentoring\nWhat You Bring\n10+ years shipping production software, including 3+ at staff, principal or tech-lead scope\nDeep modern .NET/C# expertise: DDD, modular monoliths, CQRS and EF Core with PostgreSQL\nProduction experience with AWS serverless and event-driven architecture\nA daily AI-first workflow and ownership of every line AI helps you write\nStrong testing discipline and GitHub-based CI/CD\nClear written communication, team-first mindset\nCS or related degree, or equivalent experience\nBonus Points\nReact/TypeScript micro-frontends, Auth0/OIDC, Stripe, data platforms, legacy modernization, or automotive/supply chain experience.\nThe Details\nRemote (US), standard business hours with occasional flexibility for releases or incidents. 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