About Us
We are an early-stage fintech startup (not rebuilding but) re-wiring the global payments infrastructure. Today, sending money across borders is slow, expensive, and fragmented. We're here to fix that—making instant cross-border payments a reality. We’re an early-stage fintech startup, backed by industry insiders, with deep experience in the financial ecosystem. We’re building from zero—no tech debt, no legacy systems. Just a clean slate, strong vision, and higher standards. Now we’re looking for a founding backend engineer to join us at the ground level and help bring this platform to life.
The Role
- You’ll work directly with the founders to design, build, and launch our core platform
- This is a hands-on, high-impact role : you'll write code daily, influence key architectural decisions, and ship fast using modern tools and AI.
- Build a modern backend from scratch in C# / .NET 8 with a clean, event-driven architecture
- Help architect a scalable system using CQRS, Event Sourcing, DDD, microservices
- Own key components in AWS : Lambda, SQS, SNS, DynamoDB, PostgreSQL, API Gateway
- Work in a test-first, high-trust environment with real autonomy
What we're after
You work incredibly hard, have high agency and take pride in what you doYou (love using) use AI to design, code, debug, and ship (way) faster (if you think AI is a nuisance, this is not for you)You are comfortable building backend APIs, front-end web apps, DevOps and systems integrations. Whatever comes your way.C# is a must. React nice to have. The rest you can learnDesirable
You like the idea of becoming a start-up Founder one dayComfort with cloud-native infrastructure (preferably AWS)Background in payments & fintechStrong grasp of enterprise architecture patterns (DDD, CQRS, microservices)What we're after :
Opportunity to join at the early stage and build the world's first instant and open payments networkYou’ll work directly with the founder to design, build, and launch our core platformYou will be working at the bleeding edge of AI development within an enterprise environmentHands-on, high-impact role : you'll write code daily, influence key architectural decisions, and ship fast using modern tools and AIWhy Join Us?
Build from 0 to 1 : You’ll shape the architecture, team, and product from day oneReal ownership : You won’t be a cog—you’ll be a core part of the company’s foundationMission-driven : Help reinvent a critical piece of global financial infrastructureEquity upside : Generous options in what we believe can be a generational fintech companyWork with intensity and purpose, in-person with a small team of true builders in LondonWhy you shouldn't join
Expectations are incredibly highYou’re looking for a comfy job with a 40 hour a week commitment with predictable hours and minimal pressureYou don't see the value in using AI to enhance engineering teamsLogistics
Location : In-person in London 5 days a week with some flexibilityCompensation : Competitive salary + high-equity packageTo apply please send 1) your CV, 2) a quick note on why you want to join and 3) how you are using AI today to hello [at] 3degrees [dot] co
No visa sponsorship of any kind at this point.