Founding Engineer (Go) - Up to £120k

Job description

• Founding Full-Stack Engineer to join a pre-SEED FinTech B2C product
• London (4 days in office in Shoreditch, London)
• Up to £120k + meaningful equity
• No VISA Sponsorship

The Company

An early-stage, consumer fintech startup building a new kind of personal finance platform. Backed at pre-seed with a multi-year runway.

The team is intentionally small (currently 3 full-time), highly technical, and product-led. We’re looking for a Senior Full Stack Product Engineer to help design and build the core of the platform as they move from internal alpha to public beta and beyond

You'll be building a personal finance product focused on context, clarity, and long-term financial habits.

The platform aggregates people's banking, investments, and pensions into a single view, surfacing financial “vitals” without judgement or prescriptive advice. Under the hood, the product is powered by a proprietary data schema to turn messy financial data into meaningful, comparable insights.

This is a senior, hands-on role with ownership across architecture and execution. You’ll be instrumental in building and scaling the core systems that underpin the product. You’ll work on a wide variety of projects including:

• Bank connectivity and transaction ingestion
• Live transaction categorisation
• Data modelling

Tech Stack: Go (backend leaning), Typescript, React, PostgreSQL, Terraform, Python, LLMs where appropriate. Help shape the stack!

What We’re Looking For

• Senior-level Product Engineer (ideally 6+ years experience), building with Go or other backend-focused languages
• A full-stack background (Typescript, React), with solid architectural fundamentals
• Experience handling large or complex datasets at scale, and thoughtful about data sensitivity, privacy, and personal information
• An interest in product and how people actually use what you build
• A pragmatic, ownership-driven mindset

Why Join

• Shape the core architecture from the ground up
• Build something genuinely different in personal finance
• Meaningful equity at an early-stage startup
• Direct influence on product, technical direction, and company trajectory

If you’re a Senior Product Engineer who enjoys ownership, cares about data integrity, and wants to build a product people trust with their financial lives, we’d love to hear from you.

Extra information

Status

Open

Education Level

Secondary School

Location

City of London

Type of Contract

Full-time jobs

Published at

25-01-2026

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