Senior Backend JavaScript Developer Outisde IR35

Senior Backend JavaScript Developer Outisde IR35

Posted Today by GCS

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Negotiable
Outside
Hybrid
London
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Agile Methodology Application Programming Interface (API) Azure Kubernetes Service Back End (Software Engineering) Business Expansion Cloud Computing Cloud Technology Containerisation Continuous Integration and Continuous Delivery Google Cloud Platform (GCP) GraphQL JavaScript (Programming Language) Kubernetes Microservices Microsoft Azure Node.js Nodes (Networking) NoSQL RESTful API Software Development SQL (Programming Language)

Summary: Our client is seeking a Senior Backend JavaScript Developer to join their innovative technology business, focusing on solving complex problems and building scalable systems. This role involves shaping the Back End architecture and delivering high-quality code in a collaborative, agile environment. The position is remote with bi-weekly office visits in London. The ideal candidate will have significant experience in backend development and mentoring others.

Key Responsibilities:

  • Shape the Back End architecture and deliver high-quality code.
  • Mentor junior developers and collaborate within an agile team.
  • Build scalable systems to support global business expansion.
  • Work with RESTful APIs, GraphQL, and microservices architecture.
  • Ensure platform performance at scale.

Key Skills:

  • Strong proficiency in JavaScript/TypeScript with proven Back End development experience.
  • Hands-on expertise with Node.js and related frameworks.
  • Experience with RESTful APIs, GraphQL, and microservices architecture.
  • Solid knowledge of databases (SQL and/or NoSQL).
  • Familiarity with cloud platforms (AWS, GCP, or Azure).
  • Understanding of CI/CD pipelines and containerisation (Docker, Kubernetes).
  • Excellent problem-solving skills and a proactive approach.
  • Previous experience in a senior or lead role is highly desirable.

Salary (Rate): undetermined

City: London

Country: United Kingdom

Working Arrangements: hybrid

IR35 Status: outside IR35

Seniority Level: Senior

Industry: IT

Detailed Description From Employer:

Senior Backend JavaScript Developer

Outisde IR35

Remote and once in the London office every 2 weeks

Our client, an innovative and forward-thinking technology business, is looking for a Senior Backend JavaScript Developer to join their growing engineering team.

This is a fantastic opportunity for a seasoned developer who thrives on solving complex problems, building scalable systems, and mentoring others in a collaborative, agile environment.

You will play a pivotal role in shaping the Back End architecture, delivering high-quality code, and ensuring the platform continues to perform at scale as the business expands globally.

Key skills

Strong proficiency in JavaScript/TypeScript with proven Back End development experience.

Hands-on expertise with Node.js and related frameworks.

Experience with RESTful APIs, GraphQL, and microservices architecture.

Solid knowledge of databases (SQL and/or NoSQL).

Familiarity with cloud platforms (AWS, GCP, or Azure).

Understanding o f CI/CD pipelines and containerisation (Docker, Kubernetes).

Excellent problem-solving skills and a proactive approach.

Previous experience in a senior or lead role is highly desirable.

GCS is acting as an Employment Business in relation to this vacancy.

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