Lead Full Stack Engineer

Technical Lead / Lead Full Stack Software Developer

£100,000 | 10+ years' experience | Full time | Quarterly office visits

Permanent – UK-based SaaS scale-up

About the Company

Our client is a fast-growing SaaS company operating in the B2B sales and marketing technology space.

The business is profitable, healthy and growing - expanding its product suite while continuing to invest heavily in the technology and people behind it. It's a genuine "One Team" culture, with a strong focus on growth, ownership and giving back to the wider community.

The Role

We're looking for a Lead-level Full Stack Software Developer to join a small, senior team building the company's customer-facing products. You'll be technically leading work from initial design through to full implementation - iterating quickly on a modern tech stack (Node.js microservices, Vue, Redis, SQL Server and Snowflake) and deploying to production in AWS every day, following a DevSecOps approach.

This is a hands-on lead role: part high-performing individual contributor, part lead developer and embedded architect. You'll work closely with stakeholders and customers directly, shaping solutions from the ground up rather than simply executing a backlog.

AI is central to how this team works. You'll be expected to use AI heavily to accelerate delivery and stay ahead as the tooling evolves - the team is intentionally kept small, with AI acting as a genuine force-multiplier rather than a replacement for headcount.

What You'll Be Doing

Partnering with stakeholders on initial solution design, scoping and system design

Spiking areas of uncertainty and building proofs of concept where needed

Working with initiative managers to break work down into deliverable epics and stories

Turning user stories into production code — as an individual contributor and as lead developer/embedded architect within a small squad

Owning the quality, maintainability and operability of what you and the team build

Supporting live products in production and resolving issues as they arise

Contributing to architecture and implementation decisions across the product

What We're Looking For

10+ years' full stack development experience, ideally on large-scale SaaS platforms

5+ years' JavaScript and TypeScript experience — essential for this role

Strong system design and domain modelling experience, with a commercial mindset

Experience with clean code, SOLID principles and design patterns

Comfort working in a mature CI/CD environment, deploying to production daily

A forward-thinking approach to using AI to accelerate high-quality software delivery

Excellent interpersonal and collaboration skills, including working directly with customers

Experience with automated testing, quality assurance and building systems that perform at scale

Enthusiasm for security best practice and driving high engineering standards

A technical/computer science degree or equivalent professional experience

What's On Offer

£100,000 salary

Employment with a fast-growing UK SaaS company

Competitive benefits package

A genuine "One Team" culture built around growth and high standards

Volunteer days, fundraising and community involvement

Interested?

Get in touch to find out more or to submit your application - we'd love to hear from you.