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.

We’re hiring a Senior Software Engineer who treats software as a craft, not a checklist. You’ll join a small, high-trust team where ownership is expected, curiosity is encouraged, and outcomes matter more than activity.

This is not a ticket-factory role

you’ll be expected to think critically, challenge assumptions, design robust solutions, and take responsibility for their long-term success.

You’ll work across backend services, distributed systems and frontend integrations, with a strong focus on correctness, maintainability and architectural clarity. You’ll also use AI-assisted development tools responsibly, understanding that speed only matters when paired with strong design, testing and review discipline.

**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