Javascript Developer

• Developing and maintaining responsive, user-centric applications using React and Next.js
• Collaborating with backend teams to integrate APIs and microservices
• Writing clean, maintainable JavaScript code following best practices and team standards
• Contributing to code reviews and helping raise the quality bar across the team
• Working within Agile sprint cycles to deliver features and improvements
• Troubleshooting and optimising application performance
• Engaging with stakeholders to understand requirements and translate them into technical solutions

• 5-10 years of professional experience in JavaScript development
• Strong proficiency in React and Next.js
• Solid understanding of APIs, microservices and distributed systems
• Experience working with SQL databases
• Comfortable with modern development workflows, version control and CI/CD practices
• Bachelor’s degree in Computer Science or equivalent professional experience
• Authorization to work in the United Kingdom

Nice-to-have

• Experience with Agile methodologies
• Familiarity with cloud platforms (AWS, Azure, GCP)
• Knowledge of containerisation tools (Docker, Kubernetes)
• Proficiency with Tailwind CSS or similar styling frameworks
• Meta Front-End Developer Certificate, JavaScript Certification (JSE) or freeCodeCamp Front End Libraries (React)
• Comfort with Excel for data analysis

Most roles of this type offer the following, dependent on the industry and seniority of the role:

• The opportunity to work on meaningful, user-facing applications that make a real difference
• Exposure to modern technology stacks and contemporary development practices
• Collaboration with experienced engineers and the chance to learn from peers
• Flexible working arrangements with hybrid flexibility where supported by the role
• Competitive day rates reflecting your experience and expertise
• The chance to work across diverse industries and sectors
• Structured progression and the potential for ongoing or extended contract opportunities with strong performers

SThree is the global STEM workforce consultancy. We advise businesses, build expert teams and deliver project solutions to outpace tomorrow, together.

Across the UK, we connect talented specialists with cutting-edge opportunities across technology, engineering, life sciences and financial services supported by our offices in London, Birmingham, Manchester, Glasgow and Leeds