Senior Javascript Engineer at MRJ Recruitment, Leeds, £550–£600 per day

Senior Javascript Engineers (Contract) | UK based (Hybrid - Leeds) | £550–£600 per day (Outside IR35)

We're supporting a fast-growing digital business that's investing heavily in its engineering capability and is looking for an experienced Senior Node.js Engineer to join a high-performing product team.

This isn't a role for someone who only knows one language. They're looking for polyglot engineers who understand software engineering fundamentals and are comfortable working across different technologies to solve complex problems.

You'll be:

• Building and evolving high-scale backend services with Node.js & TypeScript
• Designing clean, scalable and maintainable solutions
• Working closely with Product, Engineering and Platform teams
• Contributing to architecture and technical decision-making
• Writing high-quality, well-tested code
• Mentoring engineers and driving engineering best practice

We're looking for:

• 10+ years' commercial software engineering experience
• Strong expertise with Node.js and TypeScript
• Experience building distributed, cloud-native applications
• A polyglot mindset with exposure to other languages (Java, Go, Python, C#, Kotlin or similar)
• Strong understanding of APIs, microservices and event-driven architectures
• Experience working within modern Agile product teams
• Excellent communication skills and a collaborative approach

What's on offer:

• £550–£600 per day
• UK-based remote working
• 2 days a week in Leeds. Open to Manchester or London too.

If you're an experienced contractor who enjoys solving complex engineering challenges and wants to work alongside some exceptional engineers, I'd love to hear from you.