Senior Software Engineer

your Jared; United Kingdom; Remote; GBP 90,000 - 120,000; Full time

Job summary

your Jared is seeking a Senior Backend Engineer to design and own scalable backend services in a fintech environment. Focused on Node.js and TypeScript, you will work with AWS serverless tech and build resilient APIs while shaping architecture and production reliability.

This remote, outside IR35 12-month contract offers genuine autonomy, opportunities to influence platform direction, and collaboration with product and ops teams.

Qualifications

• Strong experience in Node.js and TypeScript.
• Experience in regulated FinTech or financial services environments.
• Hands-on senior engineering with ownership across full lifecycle.

Responsibilities

• Design, build and operate reliable, scalable backend services.
• Own areas of the platform, including architecture and technical direction.
• Build resilient APIs and distributed systems in a regulated environment.
• Work with AWS serverless tech (Lambda, SQS, EventBridge, API Gateway).
• Work with MongoDB and document databases.
• Contribute to CI/CD, observability, incident management and production support.
• Collaborate with Product, Engineering and Operations to translate requirements into scalable solutions.
• Mentor engineers and contribute to engineering standards.

Skills

Node.js

TypeScript

AWS

Serverless

MongoDB

Distributed systems

CI/CD

Production operations

Regulated environment

Mentoring

Tools

AWS Lambda

API Gateway

SQS

EventBridge

Job description

Senior Backend Engineer – Node.js / TypeScript

12-Month Contract | Fully Remote | Outside IR35

We’re looking for a Senior Backend Engineer to join an exciting fintech business, working on highly scalable, mission-critical financial systems.

The role is heavily focused on Node.js, TypeScript and AWS, with genuine ownership across the full lifecycle — from system design and architecture through to development, release and production support.

You’ll have the opportunity to work on new products and capabilities from an early stage, making key technical decisions and helping shape how the platform evolves.

• Design, build and operate reliable, scalable backend services
• Own areas of the platform, including architecture and technical direction
• Build resilient APIs and distributed systems within a regulated financial environment
• Work with AWS serverless technologies, including Lambda, SQS, EventBridge and API Gateway
• Work with MongoDB and document databases
• Contribute to CI/CD, observability, incident management and production support
• Work closely with Product, Engineering and Operations to turn business requirements into scalable solutions
• Mentor engineers and contribute to engineering standards and best practice

• Strong Node.js & TypeScript
• Strong system design and architecture
• AWS & Serverless
• MongoDB / document databases
• Distributed systems, observability and incident management
• CI/CD and production operations
• Experience working in a regulated environment, ideally FinTech or financial services
• Comfortable owning services within a build-and-run environment

This is a genuinely hands-on senior role with significant autonomy, where you’ll be expected to think beyond the code and consider scalability, resilience, operational impact and customer needs.