Lead Full Stack Engineer - React, Golang

Summary: The Lead Full Stack Engineer role focuses on overseeing the technical design and delivery of a multi-tenant software-as-a-service architecture using TypeScript, React, and Golang. This position requires a hands-on approach to lead design reviews and enforce engineering standards while collaborating with cross-functional teams. The role is critical for a consultancy's business program and involves managing CI/CD pipelines and integrating machine learning models. The initial contract duration is four months, with a primarily remote working arrangement.

Key Responsibilities:

• Own end-to-end technical design and delivery across a TypeScript/React/Vite Front End and Golang microservices within a multi-tenant SWaaS architecture.
• Define Front End module boundaries, API contracts (REST/gRPC), and state management; establish idiomatic Golang service structure, concurrency, and error-handling patterns.
• Act as hands-on Tech Lead, driving design reviews, PR approvals, and resolving technical blockers with the Senior FSE/Scrum Lead.
• Set and enforce engineering standards across TypeScript, React architecture, Vite builds, and testing (Vitest/Testing Library), alongside strong Golang test coverage.
• Design and manage CI/CD pipelines covering Front End optimisation, Golang builds, containerisation, and cloud deployment across key product workstreams.
• Collaborate cross-functionally with Architecture, Data Science, Product, and UX to integrate ML models and deliver FCA-aligned, performant, and accessible user experiences.

Key Skills:

• Proficiency in TypeScript, React, Vite, and Golang.
• Experience with REST/gRPC API design and state management.
• Strong understanding of CI/CD pipelines and cloud deployment.
• Ability to lead technical design reviews and enforce engineering standards.
• Experience in cross-functional collaboration, particularly with Architecture, Data Science, Product, and UX teams.
• Knowledge of testing frameworks such as Vitest and Testing Library.

Salary (Rate): undetermined

City: London

Country: UK

Working Arrangements: remote

IR35 Status: undetermined

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

Lead Full Stack Engineer - React, Golang

£Market Rate

London/Primarily Remote

4 months initially

My client is an instantly recognisable consultancy who require a Lead Full Stack Engineer to join a business-critical programme for an end client.Key Responsibilities:

• Own end-to-end technical design and delivery across a TypeScript/React/Vite Front End and Golang microservices within a multi-tenant SWaaS architecture.
• Define Front End module boundaries, API contracts (REST/gRPC), and state management; establish idiomatic Golang service structure, concurrency, and error-handling patterns.
• Act as hands-on Tech Lead, driving design reviews, PR approvals, and resolving technical blockers with the Senior FSE/Scrum Lead.
• Set and enforce engineering standards across TypeScript, React architecture, Vite builds, and testing (Vitest/Testing Library), alongside strong Golang test coverage.
• Design and manage CI/CD pipelines covering Front End optimisation, Golang builds, containerisation, and cloud deployment across key product workstreams.
• Collaborate cross-functionally with Architecture, Data Science, Product, and UX to integrate ML models and deliver FCA-aligned, performant, and accessible user experiences.

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