Ful Stack Engineer / Lead (Depending on Experience)

Role: Lead or Full Stack Engineer (JavaScript/TypeScript, Cloud, Next.js)
Salary: £45,000 – £70,000 DOE
Location: London – Hybrid
Security Clearance: Candidates must be eligible for SC clearance

Our client is looking for a Lead, a Senior and a Mid Level Full Stack Engineer to deliver cutting-edge digital solutions in a collaborative and innovative environment. You\’ll work across the full JavaScript/TypeScript stack, from front-end development to cloud-native backend solutions, helping clients navigate complex business challenges with transformative technology.

Please take a look at some of the core requirements below and apply for a more detailed conversation.

Key Responsibilities

As a Full Stack Engineer , you will:

• Develop full-stack web applications using modern JavaScript/TypeScript frameworks.
• Build and maintain scalable backend APIs and integrate with databases.
• Engineer user-friendly interfaces with CSS and ensure accessibility compliance .
• Implement and maintain cloud-native architectures using AWS, Azure, or GCP.
• Ensure robust testing strategies with unit, integration, and end-to-end tests.
• Work within Agile teams , contributing to sprints, estimations, and acceptance criteria.
• Collaborate closely with clients and designers to deliver high-quality solutions. (Lead role)
• Provide mentorship and support to junior team members. (Lead role)

About You

You have experience in:

• Frontend Development: React, Next.js, TypeScript, UI engineering, CSS, design systems.
• Backend Development: Node.js, API development, ORM patterns (e.g. Prisma), databases.
• Cloud & Infrastructure: AWS, Azure, or GCP, serverless architectures (e.g. functions, message queues, API gateways, authentication).
• Testing & Quality Assurance: Unit testing, Testing Library, Cypress.
• Development Practices: Agile methodologies, sprint planning, acceptance criteria.
• Collaboration & Leadership: Client-facing skills, technical mentorship, and teamwork. (Lead role)
• Security Clearance: Must be eligible for SC clearance .

Keywords: JavaScript, TypeScript, React, Next.js, Node.js, Prisma, API, AWS, Azure, GCP, Serverless, UI Engineering, CSS, Testing Library, Cypress, Agile, DevOps, Full Stack Development, Security Clearance.

Apply now for a more detailed conversation and full spec.

Sam Payne @ The One Group.

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