Software Engineer
Kieran Knight Consulting · Buckinghamshire, England, United Kingdom
About this role
The candidate will design and build on AWS using a serverless-first architecture, working across the stack including APIs, data, integrations, and infrastructure. Responsibilities include integrating third-party services such as payment processors, KYC/KYB providers, fraud platforms, and banking APIs. The role involves building secure, PCI-aware systems for a regulated payments environment. The engineer will work directly alongside the CTO to shape the platform and direct/review work from third-party engineering teams. The position offers real ownership and ownership of the platform's architecture and direction.
Skills & technologies
Nice to have
- PayFac
- ISO
- Payment gateway architecture
Read full description
Software Engineer - Payments/Fintech (AWS, Node.js). SOLE AGENT
Hybrid, 2 days a month in the office
£60,000 - £70,000 + Equity + benefits.
Our client is a growing UK payments technology company building out its in-house engineering function from the ground up. This is a rare chance to join early, work directly alongside the CTO, and genuinely shape how the platform is built. not just execute a backlog.
What we're looking for:
- Around 5 years' experience as a backend/full-stack engineer, ideally with some Front End exposure (Node.js/Next.js)
- Payments or fintech background essential. Exposure to card payments, PSPs, acquiring, or scheme/issuer processing
- Strong AWS experience (serverless, API Gateway, relational databases; Postgres/Aurora)
- Comfortable working independently, with real ownership rather than a rigid ticket queue
- Bonus: familiarity with PayFac, ISO, or payment gateway architecture
What you'll be doing:
- Designing and building on AWS using serverless-first architecture
- Working across the stack: APIs, data, integrations, and infrastructure
- Integrating third-party services; payment processors, KYC/KYB providers, fraud platforms, banking APIs
- Building secure, PCI-aware systems fit for a regulated payments environment
- You won't be building everything solo. Third-party engineering teams handle a lot of the heavy infrastructure/DevOps build, so you're directing and reviewing that work rather than carrying it all yourself
What's in it for your
- Genuine equity/options, a real stake in the business, not a token gesture
- Direct access to and mentorship from the CTO, not buried in a large engineering org
- Real scope for growth as the team scales
- The chance to shape a modern engineering function
Sound like you? Apply now or get in touch for a confidential conversation and full details.
