lead Full Stack Devleoper.

Lead Full Stack Developer

Lead, Build, and Shape the Future of a Next‑Gen SaaS Platform

Our client, a fast‑scaling, well‑funded technology company, is searching for a hands‑on Lead Full Stack Developer to drive the next evolution of a platform trusted by some of the UK's most recognisable brands.

This is a rare chance to influence technical strategy during a major platform migration, lead and grow an engineering team, work with modern tech.

If you love building high‑quality systems at scale, enjoy technical ownership, and want to make decisions that genuinely shape a product's future, this is a role where your impact will be felt immediately.

The Opportunity

As the Technical Team Lead, you'll split your time between hands‑on engineering (~60%) and guiding a growing team of developers. You'll shape engineering standards, partner closely with external agencies, and drive a strategic migration from legacy Service Fabric architecture to a modern, scalable Kubernetes‑based platform.

Your work will define the foundation of the company's future product suite - this is genuine, long‑term technical influence in a scale‑up environment.

What You'll Be Doing

• Leading and mentoring a team of 3-6 engineers, with significant growth expected
• Remaining hands-on with code (~60%) while raising engineering standards
• Owning the technical direction for the Connect 2.0 migration
• Designing scalable backend systems built on Kubernetes
• Driving frontend delivery using React
• Collaborating with partner agencies to ensure consistent engineering excellence
• Making strategic decisions across integrations, frameworks, and cloud architecture
• Contributing to a secure, high‑performance SaaS platform
• Influencing product direction alongside engineering and product leadership

What You'll Bring

• Strong full‑stack engineering background
• Experience with both Kubernetes (backend) and React (frontend)
• Prior team leadership, mentoring or technical ownership
• Experience building or scaling modern SaaS platforms
• Solid cloud knowledge, ideally Azure
• Ability to translate business needs into scalable technical solutions
• Excellent communication and cross‑functional collaboration skills
• A pragmatic, hands‑on engineering mindset with a passion for quality
• Architectural experience, or the ambition to step into that responsibility

The Tech Stack

• Backend: C#, .NET, Kubernetes
• Frontend: React, JavaScript
• Infrastructure: Azure, Cosmos DB, modern CI/CD
• Legacy (during migration): Service Fabric

Why This Role Stands Out

• Take ownership of one of the company's most strategic engineering initiatives
• Lead a team with real autonomy, influence, and room to grow
• Shape long‑term engineering and product direction
• Join a scale‑up offering true leadership progression - including a pathway to CTO
• Strong team culture, notable investment, and serious momentum
• Hybrid working - 2-3 days per week in the London office

Interested?

If you're a driven technical leader who wants to build at scale, shape engineering direction, and lead a major platform transformation, this opportunity will put you at the centre of the company's future.

We Are Aspire Ltd are a Disability Confident Committed employer