Senior Software Engineer (C# / .Net)

What we do

LineTen is on a mission to crack the code on urban delivery. By leading with our values and putting carrier partners first, we are paving the way for better delivery experiences. LineTen is a new approach to delivery with a free carrier API and an operations management platform for shippers. We're building the first global data-driven last-mile network that has the potential to solve industry-wide problems.

How you'll work

• Operate with high ownership in a low-process environment
• Proactively look for what can be improved rather than waiting for direction
• Value correctness, clarity and maintainability over "it just works"
• Work outside strict role boundaries when needed, without feeding burnout culture
• Communicate technical decisions clearly and push back constructively when required

Core technical skills

• C# / .NET 8+, Entity Framework Core, async/await, MediatR / CQRS
• Strong understanding of distributed systems: consistency models, event-driven patterns, idempotency, race conditions
• Experience with Redis caching, Azure Blob Storage, and data-modelling trade-offs
• API design: RESTful contracts, versioning, webhooks, long-running operations (202 Accepted patterns)
• Real-time & frontend integration: SignalR / WebSockets, SPA frameworks (Vue / Nuxt or similar), TypeScript

What good looks like

• You leave systems clearer, more correct, and easier to evolve
• Problems are solved at the right level, not patched over
• Trade-offs are explicit and understood
• Other engineers trust your judgement and the quality of your code