Lead & Staff JavaScript Engineers | Full Stack | Hyper-Growth Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | £110k-150k + Equity | 3 days hybrid in London

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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 Senior, Lead, 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.

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

Have 8-15+ 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

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

If interested in this Lead & Staff JavaScript Engineers | Full Stack | Hyper-Growth Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | £110k-150k + Equity | 3 days hybrid in London please apply here and we will contact you if it's a good match! 🙂

”, “datePosted”: “2026-05-18”, “hiringOrganization”: { “@type”: “Organization”, “name”: “Owen Thomas | B Corp™”, “sameAs”: “https://uk.whatjobs.com/pub_api__cpl__435643177__4861?utm_campaign=publisher&utm_medium=api&utm_source=4861&geoID=4” }, “jobLocation”: { “@type”: “Place”, “address”: { “@type”: “PostalAddress”, “addressLocality”: “London” } } }

Company: Owen Thomas | B Corp™

Location: London

Job Description:

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 Senior, Lead, 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.

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

Have 8-15+ 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

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

…

Posted: May 18th, 2026