Full Stack Engineer

Fullstack Engineer (Backend Focussed)

Node.js | TypeScript | AWS | PostgreSQL

London — 4 days per week onsite

£50,000–£55,000 + benefits and share options

Permanent, full-time

The Opportunity

I’m partnering with a growing London fintech building products that help people access, manage and save their money more effectively.

They’re looking for a backend-focused Software Engineer to join a small, high-ownership engineering team and help build reliable financial products used by real customers.

This is not a role where you’ll simply work through a backlog of pre-written tickets.

You’ll be trusted to understand the wider problem, contribute to technical decisions and own work from initial requirement through to production.

What You’ll Be Working On

• Designing and building backend services with Node.js and TypeScript
• Developing secure REST and GraphQL APIs
• Building and improving third-party integrations
• Working across payment, payroll and financial-data workflows
• Designing database-backed systems using PostgreSQL and MongoDB
• Improving production reliability, scalability and performance
• Investigating incidents and resolving underlying causes
• Strengthening automated testing, monitoring and CI/CD
• Working with AWS, Docker and cloud-native infrastructure
• Contributing to React-based product features when required

What We’re Looking For

• Around 3–7 years of commercial software engineering experience
• Strong backend development experience with Node.js and TypeScript
• Experience designing and maintaining production APIs
• Good knowledge of PostgreSQL or another relational database
• Hands-on AWS experience
• Experience with Docker, CI/CD and automated testing
• Confidence owning features across the full development lifecycle
• Strong communication and problem-solving skills
• A genuine interest in product outcomes, not just code delivery

Particularly Relevant Experience

Experience in any of the following would be valuable:

• Fintech, banking, payments or payroll
• Billing or subscription systems
• Event-driven architecture
• Kafka, SQS, SNS or RabbitMQ
• Webhooks and third-party integrations
• Authentication, permissions or RBAC
• Production incident response
• Microservices
• High-volume transactional systems
• Fast-growing SaaS or product-led businesses

The Environment

You’ll join a small engineering team where your work will be visible and your input will genuinely matter.

The strongest fit will be someone who is:

• Comfortable taking ownership
• Pragmatic and commercially aware
• Happy working through ambiguity
• Interested in improving existing systems
• Willing to challenge assumptions constructively
• Motivated by joining a growing product business

Package

• £50,000–£55,000 salary
• Benefits
• Share options
• London-based
• Four days per week onsite
• Clear opportunity for ownership and progression