Senior Software Engineer Fintech AI

Signify Technology; Greater London; On-site; GBP 95,000 - 130,000; Full time

Job summary

Signify Technology is recruiting a Senior Software Engineer for a fast-growing UK AI Fintech. This high-impact, solo-contributor role sits in a collaborative engineering team and offers the chance to shape product and engineering as the platform scales.

You will leverage TypeScript, React, NestJS, and AWS to build robust systems, with a strong emphasis on architecture, testing, and CI/CD best practices. A results-driven, forward-thinking mindset is essential.

Qualifications

• Strong experience with TypeScript.
• Commercial experience with React and NestJS.
• Hands-on experience with AWS.
• Strong understanding of architecture, testing, CI/CD, and engineering best practices.

Responsibilities

• This is a high-impact individual contributor role within a collaborative engineering team.

Skills

TypeScript

React

NestJS

AWS

CI/CD

Software architecture

Tools

AWS

Job description

We’re hiring on behalf of a fast-growing UK AI Fintech looking to add a Senior Software Engineer to its team. Backed by strong investment and with significant momentum behind them, they’re entering a major phase of growth and scaling both their platform and engineering capability.

This is a high-impact individual contributor role within a collaborative engineering team, with the opportunity to shape both product and engineering as the business scales.

A key part of this hire is mindset.

What They’re Looking For

• Strong experience with TypeScript
• Commercial experience with React and NestJS
• Hands-on experience with AWS
• Strong understanding of architecture, testing, CI/CD, and engineering best practices

Highly Desirable:

• Daily user of AI development tools such as ChatGPT, Claude, Codex, or similar
• Passion for using AI and automation to improve engineering workflows
• Forward-thinking mindset with an interest in modern software delivery practices

Bonus:

• Experience in FinTech, lending, payments, or FCA-regulated environments
• Exposure to complex financial or ledger-based systems

Why Join?

• Join a high-growth fintech at an exciting stage of scaling
• Work on meaningful products with real customer impact
• Be part of a strong engineering culture with high ownership
• Help shape how AI is adopted within software engineering and product delivery