Senior Software Engineer (Node.js)

Title: Senior Software Engineer (Node.js)

Location: Westminster, London OR Leeds (Hybrid)

Working: 40% onsite

Clearance: Active SC Clearance

Our client is a UK public-sector organisation undergoing significant digital transformation, with an expanding Digital, Data & Technology function. They are seeking a Senior Software Engineer to develop modern digital services and help deliver scalable, secure and user-focused technology solutions.

The Role

You'll work alongside technical leads, senior stakeholders, product managers and other engineers to develop Node.js applications, APIs, microservices and serverless solutions . You'll play a key role in technical delivery, ensuring solutions are scalable, maintainable and aligned with security and engineering best practices.

Key Skills

• Strong commercial experience with Node.js
• Experience with Express.js and/or Nest.js
• Strong JavaScript / TypeScript development skills
• Experience developing and integrating REST APIs
• Experience with microservices and serverless applications
• Experience developing and maintaining CI/CD pipelines
• Strong understanding of application scalability, security and maintainability
• Experience with unit and integration testing
• Experience integrating applications with third-party systems, APIs and webhooks
• Strong understanding of secure software development and data protection
• Agile / user-centred development experience
• Strong technical documentation and communication skills
• Ability to work effectively with senior stakeholders, product teams and engineers
• SC Clearance or eligibility to obtain clearance

What's on offer?

• Senior role within an established UK public-sector organisation
• Hybrid working from Westminster or Leeds
• 40% onsite working
• Full-time or flexible working arrangements
• Opportunity to work on high-impact digital transformation projects
• Work with modern Node.js, API, microservices and cloud technologies
• Collaborative Digital, Data & Technology environment
• Opportunity to contribute to technical strategy and engineering standards
• Meaningful work supporting the delivery of improved public-facing digital services

This is an excellent opportunity for a Senior Software Engineer looking to work on modern digital services, solve complex technical challenges and contribute to large-scale transformation within a high-profile UK public-sector environment.