Summary
✨ AI‑Generated
Join an AI-augmented engineering team responsible for a mature, high-volume e-commerce platform. You will design and maintain C# and .NET services, integrate with major marketplace APIs, improve order-processing and data pipelines, modernize legacy components, and optimize relational databases while maintaining a high standard for automated testing and code quality.
Highlights
Senior engineering position focused on modernizing high-volume commerce systems, working with substantial ownership, modern AI-assisted development practices, and challenging integrations and data pipelines.
Description
Join one of the largest Amazon sellers in the industry.
For 20 years this company has run a proprietary e-commerce platform that processes thousands of orders daily across Amazon and other major marketplaces.
We're looking for a senior engineer with deep C#/.NET expertise to maintain, extend, and modernize it.
We're an AI-augmented team: Claude Code is part of daily work here.
What You'll Do
Design, build, and maintain backend services and web applications in C# and .NETBuild and extend integrations with Amazon and other marketplace APIs (orders, inventory, listings, fulfillment)Maintain and improve order-processing and data pipelines that run at high volume every dayModernize legacy .NET Framework components to modern .NET where it makes senseWork with MS SQL Server and MySQL: schema design, query optimization, performance tuningWrite automated tests and hold a high bar for code qualityCollaborate with engineering and product teams to ship reliable, practical solutions
What We're Looking For
5+ years of professional .NET developmentStrong C# skills across both legacy .NET Framework and modern .NET (ASP.NET Core)Solid experience with MS SQL Server and MySQLExperience integrating third-party APIs; marketplace or e-commerce experience is a plusDaily use of AI coding tools (Claude Code, Codex, Cursor, or similar) as part of your workflowComfortable working in a large, long-lived codebaseExperience in agile teams, strong problem-solving skills, clear communicationBachelor's degree in Computer Science or equivalent experience
How We Work
We're an AI-augmented team.
Claude Code is our primary tool and you'll use it every day to move faster.
But you own every design decision and every line that ships.
AI is leverage, not a substitute for judgment.
We don't accept careless AI-generated code; you review and approve everything before it goes out.
Why Join Us
Real scale: thousands of orders a day, revenue that matters, problems that aren't theoreticalA 20-year-old platform with both legacy and modern code, so you'll do real engineering, not just greenfield toysSmall, senior team with no bureaucracyModern AI-first workflowFully remote, full-time, long-term engagement
