Senior Full Stack Engineer (NodeJS / ReactJS)

Senior Full Stack Engineer (React, Node.js, AWS)

Location: UK (Remote) - Full Time.

This role will be suitable for applicants to work in the UK or EEC location but on a full-time permanent basis (not b2b).

A well-funded telecoms start-up is hiring for a Senior Full Stack Engineer to join their foundational team.

This ambitious company is poised to redefine the telecoms industry by building a modern, intelligent, and scalable connectivity platform from the ground up. This is a rare opportunity to get in on the ground floor, build a platform from scratch, and shape the future of a new technology without the constraints of legacy code.

The Role

The company is not looking for a traditional DevOps engineer or a siloed frontend developer. They are seeking a true Full Stack Engineer who is also a systems-thinker .

The successful candidate will be a pivotal member of a small, high-performance team, responsible for designing, building, and deploying the core of the platform. This role requires an engineer who can move fluidly across the stackfrom architecting a new microservice in Node.js to building a beautiful, performant user interface in React and Next.js , all while managing the AWS infrastructure it runs on.

The ideal candidate is a builder who not only writes proficient application code but also understands the underlying architecture, data layer, and infrastructure required to make it scalable and resilient.

What This Role Involves

  • Architecting & Building: Designing, developing, and deploying new services and features across the entire stack (React, Next.js, Node.js).
  • Platform Ownership: Taking ownership of the AWS infrastructure, ensuring services are scalable, reliable, and secure.
  • Data Layer Management: Being hands-on with databases, responsible for design, management, and optimization.
  • Improving Developer Velocity: Building and maintaining the tools, CI/CD pipelines, and systems that make the entire engineering team more productive.
  • Collaboration: Working directly with the founders and product team to shape the technical roadmap and make critical architectural decisions.

What They're Looking For

  • Full Stack Proficiency: Several years of hands-on experience building complex applications with React (or similar) and Node.js .
  • Modern Frontend: Deep experience with Next.js and its paradigms (SSR, SSG, ISR).
  • Cloud Native: Strong, practical experience with AWS . Comfortable managing infrastructure as well as applications.
  • Architecture Mindset: A background in making key architectural decisions and an ability to discuss the why behind those choices. Someone who designs systems, not just consumes tasks.
  • Database Knowledge: Proven experience with database management (e.g., PostgreSQL, MongoDB, DynamoDB), not just using an ORM.
  • Start-Up Ready: A personality that thrives in a fast-paced environment, is comfortable with ambiguity, and is driven to take ownership.
Company
Twelve
Location
City of London, Greater London, UK
Employment Type
Part-time
Posted
Company
Twelve
Location
City of London, Greater London, UK
Employment Type
Part-time
Posted