Senior Backend JavaScript Developer Outisde IR35

Summary: The Senior Backend JavaScript Developer role is designed for an experienced developer to join a dynamic technology company, focusing on complex problem-solving and scalable system development. The position involves shaping backend architecture and delivering high-quality code in a collaborative, agile environment. The role requires remote work with occasional office visits in London. The ideal candidate will have a strong background in JavaScript/TypeScript and backend development.

Key Responsibilities:

• Shape the Back End architecture and deliver high-quality code.
• Mentor junior developers and collaborate within an agile team.
• Ensure platform performance at scale as the business expands globally.
• Work with RESTful APIs, GraphQL, and microservices architecture.
• Utilize cloud platforms and manage CI/CD pipelines.

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: UK

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.