Senior Product Engineer (Backend)

SR2 | Socially Responsible Recruitment | Certified B Corporation™; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Hybrid work

London office

Team lunches

22 days annual leave

Autonomy

Fintech products

Job summary

SR2 | Socially Responsible Recruitment | Certified B Corporation™ is seeking a Senior Product Engineer (Backend) to own backend solutions for a growing fintech platform that handles payments, reconciliation, reporting and integrations. You will shape architecture, own features end-to-end, collaborate with Product and Engineering, and push ideas from concept to production.

This hybrid role offers up to 3 days remote per week, a London City office, team lunches and 22 days holiday, with true

Qualifications

• Strong commercial Node.js and TypeScript experience.
• Experience building and supporting production backend systems.
• Strong API and relational database experience, ideally MySQL.
• Solid AWS and cloud development experience.
• Experience with Docker and modern engineering practices.
• Understanding of software architecture.
• Experience taking features from concept through to production.
• Ability to challenge requirements and suggest better solutions.

Responsibilities

• Build scalable backend services, APIs and workflows.
• Work closely with Product and Engineering to solve real customer problems.
• Own features from design through to production.
• Shape backend architecture, service boundaries and data models.
• Work across payments, reconciliation, reporting and integrations.
• Debug production issues and improve reliability and performance.
• Contribute to technical direction and engineering standards.
• Use AI-assisted development tools to improve development, testing and code review.

Skills

Node.js

TypeScript

NestJS

MySQL

AWS

Docker

REST APIs

Automated testing CI/CD

AI-assisted development tools

Job description

Build technology that solves real problems I Senior Product Engineer (Backend)

We're working with a growing fintech that's changing how insurance businesses manage their financial operations.

The platform simplifies payments, reconciliation, reporting, payouts and integrations, replacing fragmented processes with smarter, more efficient technology.

We're looking for a Senior Product Engineer (Backend) to take genuine ownership of the product as it continues to grow.

This isn't a traditional ticket-driven role. You'll be involved in understanding the problem, challenging requirements, making technical decisions and taking features from idea through to production.

What you'll be doing

• Build scalable backend services, APIs and workflows.
• Work closely with Product and Engineering to solve real customer problems.
• Own features from design through to production.
• Shape backend architecture, service boundaries and data models.
• Work across payments, reconciliation, reporting and integrations.
• Debug production issues and improve reliability and performance.
• Contribute to technical direction and engineering standards.
• Use AI-assisted development tools to improve development, testing and code review.
• Node.js
• TypeScript
• NestJS
• MySQL
• AWS
• Docker
• REST APIs
• Automated testing / CI/CD
• AI-assisted development tools

What we're looking for

We're looking for a strong backend engineer who enjoys ownership, problem-solving and having an impact beyond writing code.

You'll ideally have:

• Strong commercial Node.js and TypeScript experience.
• Experience building and supporting production backend systems.
• Strong API and relational database experience, ideally MySQL.
• Solid AWS and cloud development experience.
• Experience with Docker and modern engineering practices.
• A strong understanding of software architecture.
• Experience taking features from concept through to production.
• The confidence to challenge requirements and suggest better solutions.

Think like a product engineer. We're looking for someone who doesn't simply ask:

"What do you want me to build?"

Instead, you'll ask:

"What problem are we actually trying to solve?"

You'll have the freedom to challenge assumptions, suggest alternatives and influence what gets built.

What's on offer?

• Hybrid, up to 3 days remote per week
• London office in the City
• Team lunches and international offsites
• 22 days holiday + UK bank holidays
• High level of ownership and autonomy
• Meaningful fintech products