Senior Back End Engineer (.NET)
Location:
Fully remote (UK-wide only).
We do have an office in Old Street, London, which you’re welcome to use if you like. We also run company-wide meetups twice a year (previous off-sites include Paris and the Cotswolds).
About Claimit
Claimit is a rapidly growing, seed-stage AI tech startup transforming claims management through intelligent automation. We help businesses manage logistics, loss and damage claims more efficiently by removing manual effort and friction from complex processes.
We’re scaling quickly, solving genuinely hard problems, and building software that has a real impact on customers. We’re looking for senior engineers who enjoy ownership, care about clean systems, and thrive in a fast-moving startup environment.
Role Overview
We’re looking for a
Senior Back End Engineer
to play a key role in the design, build and evolution of Claimit’s core platform.
You’ll focus primarily on
back end systems and APIs
, working within our Microsoft stack as we move through
.NET 9 and towards .NET 10
. This is a senior, hands-on role where you’ll help shape architecture, improve reliability and performance, and raise the bar on engineering standards as we scale.
You’ll work closely with the CTO, product, and other engineers to design robust services that support customer-facing features, AI-driven workflows and analytics-heavy use cases.
Key Responsibilities
- Design, build and maintain scalable, secure and performant back end services using
C# and ASP.NET Core
.
- Own and evolve APIs, data models and business logic that underpin Claimit’s platform.
- Contribute to architectural decisions as we modernise and scale our systems, including our transition to
.NET 9 and beyond
.
What We’re Looking For
Nice to Have
- Prior experience or exposure to the logistics or courier industry
- Experience with
distributed systems
, micro-services, or event-driven architectures.
- Familiarity with
Docker
and container-based workflows.
- Exposure to
AI- or data-driven products
, even if not hands-on ML work.
What’s on Offer
- A genuinely competitive
senior-level salary
, plus meaningful equity in a seed-stage AI business (details shared during early interview stages).
- 25 days annual leave
, plus bank holidays.
- Access to our
EMI share scheme
.
- Pension scheme.
- Fully remote working within the UK.
- A collaborative environment where senior engineers have real influence over technical direction and product outcomes.
Candidate Experience
Our interview process is designed to be clear, respectful and efficient.
- Intro call with a Talent Partner (30–35 mins)
- Technical interview (video) with Co-Founder & CTO, David (1 hour)
- Take-home Tech Exercise (2-3hrs max)
- Final video call with Co-Founder & CEO, Andy, and a Senior Engineer (1 hour)
We aim to give feedback within
24–48 hours
at each stage and complete the full process within
1–2 weeks
.
