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Software Engineer (AWS, Node.js) - Payments/Fintech. SOLE AGENT

Kieran Knight Consulting LtdBuckinghamshire🇬🇧United KingdomPosted 23 Sept 2026

Why This Role Stands Out

You'll have a significant impact shaping a growing fintech platform, leveraging your AWS and Node.js expertise in a hybrid role with competitive compensation and valuable equity. This opportunity is ideal for an independent mid-senior engineer with a payments background eager for direct mentorship and substantial career growth. Apply now to join this exciting venture!

Quick Overview

Salary
£60k - £70k/yr
Seniority
Mid Senior
Employment type
Full Time
Work mode
Hybrid
Location
Buckinghamshire, United Kingdom
Next.jsNode.jsAPI GatewayAWS

Job Description

Software Engineer (AWS, Node.js) - Payments/Fintech. 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 Back End/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.

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