Full Stack Engineer

TechTree; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Equity

Job summary

TechTree is building AI systems to help organisations detect and respond to disinformation in real time. We're seeking a Senior Full Stack Engineer - backend-leaning, with frontend comfort, to own end-to-end features and architect solutions from day one. You'll work across backend and frontend in a fast-moving, remote-friendly environment with autonomous ownership.

The team is ~15 people and growing. The role includes remote work with travel to London roughly every six weeks.

Qualifications

• Around 5 years of professional software engineering experience.
• Backend-leaning full-stack with frontend comfort.
• Go experience preferred; strong interest in learning Go welcomed.
• Versatility across languages; C# or Java acceptable if moving to Go.
• Experience designing and implementing systems from scratch.
• Comfortable making architectural decisions independently without established frameworks.
• Startup experience or building products from scratch.
• Strong communicator for a remote-first team and London meetups.

Responsibilities

• Design, implement, and maintain end-to-end features across backend and frontend
• Build scalable systems from the ground up
• Collaborate with product, design, and engineering on architecture and technology choices
• Explore and experiment with new technologies and approaches
• Troubleshoot, optimise, and ensure performance across full-stack applications

Skills

Go programming

Backend development

System design

Multi-language

Startup experience

Communication skills

Job description

An AI company is building systems to help organisations detect and respond to disinformation attacks in real time. The platform combines machine learning, proprietary knowledge of attack and defence techniques, and large-scale, high-throughput data analysis. The founding team brings over forty years of combined experience building data systems used by national security and commercial organisations.

After strong early traction, the team is now accelerating the build-out of the platform.

The role

We're looking for a Senior Full Stack Engineer - backend-leaning, with enough frontend comfort to own features end-to-end. You'll design and build systems from scratch across both layers, working without pre-existing frameworks and making architectural decisions independently from day one.

The team is ~15 people and growing. Responsibilities are broadly scoped by design - more complex problems are on the horizon, and you'll grow into them. Right now, expect mostly backend-driven frontend work in a fast-moving environment where ownership is the norm.

This is a remote role with travel to London approximately every 6 weeks.

What you'll do

Design, implement, and maintain end-to-end features across backend and frontend

Build scalable and maintainable systems from the ground up

Collaborate with product, design, and engineering on architecture and technology choices

Explore and experiment with new technologies and approaches

Troubleshoot, optimise, and ensure performance across full-stack applications

What we look for

Around 5 years of professional software engineering experience

Backend-leaning full-stack - comfortable on the frontend, strongest in the backend

Go is preferred - candidates with Go experience are prioritised; genuine interest in learning Go is equally welcome

Versatility across languages is a positive signal; C# or Java backgrounds are fine if you're motivated to move to Go

Experience designing and implementing systems from scratch

Comfortable making architectural decisions independently without established frameworks

Startup experience or experience building products from scratch

Strong communicator - remote-first team, London meetups every ~6 weeks

Competitive salary + equity

Opportunity to shape the architecture and technology stack from day one

Collaborative, hands-on work environment

Remote with travel to London ~every 6 weeks

Opportunity to shape the architecture and technology stack from day one

Collaborative, innovative, and hands-on work environment

Equity

About TechTree's Client

We’re building AI systems to help organisations detect and respond to disinformation attacks in real time. Our platform combines machine learning, proprietary knowledge of attack and defence techniques, and experience building large-scale, high-throughput data analysis systems.The founding team brings over forty years of combined experience creating data systems used by national security and commercial organisations. After strong early traction, we’re now accelerating the build-out of the platform.