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Senior Software Engineer JavaScript

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icon briefcase Job Type : Full Time

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Job Description - Senior Software Engineer JavaScript

Senior Software Engineer (JavaScript)
?? Colchester - Hybrid (2 days in-office, your choice)
?? £40,000 - £50,000 + flexible hours + award-winning culture

Are you a strong JavaScript developer who's ready to take the next step into leadership? We're working with an award-winning Colchester-based business that partners with household name global clients, and they're looking for a Senior Software Engineer to help lead their talented dev team.

Why this role?
  • Flexible working hours - work to your own rhythm, just be contactable between 10am and 4pm.

  • Hybrid working - in the office just two days a week (you choose which ones).

  • Step into leadership - lead a team of 5 developers, mentor juniors, and get involved in sprint planning and architecture.

  • Work with big brands - contribute to high-impact projects for globally recognised clients.

  • Innovation welcome - got big ideas? You'll have the space to test, build and pitch them.

This is the perfect opportunity for someone who's been playing a key role in development teams - maybe already guiding juniors or contributing to planning - and now wants to take ownership and steer a small, sharp team.

The Role

You'll be working on complex systems, helping to shape architecture, and driving technical decisions. There's plenty of variety here - from backend APIs to frontend UI, R&D, and dev strategy. The environment is collaborative and forward-thinking - your voice will matter.

Tech Stack

Required:

  • Node.js

  • React.js

  • JavaScript / TypeScript

  • HTML / CSS

  • PostgreSQL

  • Backend APIs

Nice to Have:

  • Next.js

  • GCP or AWS

  • Slack, Postman

  • CI/CD pipelines

  • Python

You'll Be:
  • Leading a team of 5 talented developers

  • Supporting and mentoring junior team members

  • Getting involved in architecture and sprint planning

  • Innovating and contributing to tech strategy

  • Building scalable systems for major global brands

Senior Software Engineer (JavaScript)
?? Colchester - Hybrid (2 days in-office, your choice)
?? £40,000 - £50,000 + flexible hours + award-winning culture

Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy.

To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.

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