Senior Back End Engineer (Banking/Fintech) - OUTSIDE IR35

Full Stack Engineer (Banking/FinTech/Payment experience essential)

Node.js & AWS

Contract (Outside IR35 - 6 months)

Fully remote

We’re working with a cutting-edge fintech company looking for a Senior Full Stack Engineer to join their growing team. This is a hands-on role where you’ll build scalable financial systems, including high-volume ledgers and banking integrations.

What You’ll Do:

• Build backend APIs using Node.js and AWS Lambda and EKS
• Develop a consolidated ledger system handling ~1M transactions/day
• Integrate with third-party banking services
• Create responsive front-end apps with React
• Collaborate with a skilled development team to deliver scalable solutions

You Should Have:

• Strong Node.js experience
• AWS development expertise (Lambda, API Gateway, etc.)
• Solid API design and implementation skills
• Experience with high-volume financial transactions and ledger systems
• Cloud, microservices, or fintech experience is a plus
• Experience using React (desirable)
• Experience working in small teams

Why Apply?

• Work on high-impact, large-scale financial systems
• Shape the architecture of a next-gen fintech platform
• Full remote contract opportunity