Staff-Principal Full Stack Engineer | Hyper-Growth Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | £110k-170k + Equity | 3 days hybrid in London

Job description

Staff-Principal Full Stack Engineer | Hyper-Growth Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | £110k-170k + Equity | 3 days hybrid in London

Opportunity:

We're supporting a hyper-growth fintech client that is also tech-for-good. They’ve got big hiring plans for the year and are currently looking for Staff & Principal Full Stack Engineers to join the team. You’ll be working with Typescript, React.js, Node.js, Next.js & more, working to shape the product direction and technical architecture as they continue to scale their business and expand into new markets.

What You'll Be Doing as a Staff-Principal Full Stack Engineer | Hyper-Growth Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | £110k-170k + Equity | 3 days hybrid in London

• Own the end-to-end product lifecycle, from ideation and design to implementation, deployment, feedback, and measurement
• Communicate new features with internal and external stakeholders, gathering input pre-implementation and supporting launches
• Design and build intuitive, high-performance web interfaces for business users
• Lead the design and delivery of high-impact, user-facing web interfaces with a focus on performance and usability
• Establish and uphold engineering standards through testing strategy, documentation, and code review practices
• Act as a technical mentor and multiplier, coaching engineers, unblocking teams, and raising the overall technical bar

Core Skills for the Staff-Principal Full Stack Engineer | Hyper-Growth Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | £110k-170k + Equity | 3 days hybrid in London

• Have 10+ years of experience in software engineering
• Strong proficiency in React, TypeScript & Node.
• Proven frontend & backend engineering skills
• Experience working with Next.js, Express & PostgreSQL
• Experience in high pace early-stage businesses, with the ability to work end-to-end across the entire product development process, taking high ownership & accountability.
• Have experience mentoring engineers, and driving higher standards across the team.
• A problem solving, product engineering mindset.
• Strong understanding of frontend & backend software engineering best practices
• Strong written & verbal communication skills.

Nice to have:

• Experience in regulated environments (ideally fintech)
• Experience working with AI tooling

Details for the Staff-Principal Full Stack Engineer | Hyper-Growth Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | £110k-170k + Equity | 3 days hybrid in London

• Tech Stack: React, TypeScript, Node, Next.js
• Location: 3 days hybrid in London
• Start: ASAP

If interested in this Staff-Principal Full Stack Engineer | Hyper-Growth Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | £110k-170k + Equity | 3 days hybrid in London, please apply here and we will contact you if it's a good match! :)

Extra information

Status

Open

Education Level

Secondary School

Location

City of London

Type of Contract

Full-time jobs

Published at

05-02-2026

Profession type

Accountancy

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English