Principal Full‑Stack Developer

• Fixed Term Contract: 6-month (strong potential to turn permanent)
• FTC Salary Range: £85,000 to £95,000 (pro-rata)
• Hybrid Model: Mostly remote, as & when in London office (~2 days a month)
• Office Location: London, UK

About the Client:

My client, one of the UK’s fastest growing IT Solutions & Consultancies is seeking a Principal Developer to join their in-house Software / IP Development Team to bring high level hands‑on leadership & architectural vision to a cutting-edge software engineering team.

The Role:

You’ll act as a hands-on developer & key technical voice for the IP Development function, working closely with multiple development teams, shaping architecture, elevating engineering standards, and ensuring the platform remains scalable, secure, and future‑ready. Working closely with Leads, Engineering Managers, and Product, you’ll steer strategy, drive innovation, and keep delivery aligned across a wide range of software projects.

What You’ll Do:

• Provide hands-on Development leadership and mentoring to Lead Developers and senior engineers.
• Lead production of innovative products using modern TypeScript stacks (e.g. React, NestJS, Node)
• Own architectural decisions across the platform; stack, integrations, hosting, and patterns.
• Define and maintain Non-Functional Requirements (NFRs) and ensure engineering quality at scale.
• Run technical reviews for major software releases and ensure platform‑wide alignment.
• Spot opportunities for innovation (AI, DevTools, frameworks) and run PoCs.
• Contribute to integration and security planning across systems
• Oversee shared libraries, APIs, and reusable components.
• Mentor senior engineers and guide technical direction across squads.
• Lead root‑cause analysis on critical issues and shape long‑term fixes.

What You’ll Bring:

• Full‑stack expertise with modern TypeScript stacks (React, NestJS, Node). Bonus points for python.
• Experience leading cross-functional engineering teams, providing clear direction in the software development function.
• Strong experience in senior engineering and architectural leadership roles.
• Azure / AWS cloud exposure is highly desirable.
• Strong background in modern web architectures and cloud‑native environments.
• Proven ability to define and uphold NFRs at scale.
• Skill in platform‑level design oversight, technical reviews, and cross‑team governance.
• A track record of driving innovation and validating emerging technologies.
• Excellent communication and stakeholder management across engineering and product.
• Comfortable leading through ambiguity and bringing clarity to complex environments.

Services offered by Computappoint Limited are those of an Employment Business and/or Employment Agency in relation to this vacancy.

Computappoint do not use AI to filter or assess candidates, we use experienced and dedicated recruiters, who want to match the best people to roles.