Senior Full-Stack Web Developer - Contract x3

Senior Full-Stack Web Developer - Daily Rate Contract Roles x3- Hybrid-Working Model (3 Days' On-Site)

Key Responsibilities:

• Develop and maintain scalable, high-performance web applications using React and Next.js.
• Design, develop, and maintain server-side applications and microservices using Node.js.
• Architect and manage secure, high-performance APIs (REST or GraphQL) for web and mobile consumption.
• Collaborate with UI/UX designers to translate wireframes and visual designs into high-quality, responsive code.
• Optimize applications for maximum speed, scalability, and SEO, leveraging Next.js features (SSR/SSG).
• Integrate applications with headless CMS platforms, third-party suppliers, legacy systems, and internal data sources.
• Design and maintain database schemas (SQL or NoSQL) to support data-driven applications.
• Advocate for front-end best practices, including accessibility (WCAG), modular component design, and state management.
• Perform root cause analysis of technical issues and ensure the stability and security of the production environment.
• Collaborate with Enterprise Architects to ensure alignment with data governance, security protocols, and cloud infrastructure standards.
• Participate in sprint planning, backlog refinement, and technical grooming — providing effort estimations, feasibility insights, and technical leadership across the stack.
• Work closely with QA teams to ensure features are thoroughly tested and meet acceptance criteria.
• Support the Programme Manager by identifying technical risks and dependencies, and providing transparency on technical progress.

Knowledge, Skills and Experience:

• A minimum of 5 years' experience as a Full-Stack or multi-stack Developer working on large-scale, production-grade web applications in complex technical environments.
• Expert proficiency in JavaScript (ES6+) and TypeScript across both client and server.
• Strong expertise in React and Next.js for front-end development, and Node.js for server-side development.
• Strong understanding of modern CSS methodologies (e.g., Tailwind, CSS Modules, or Styled Components).
• Experience with state management libraries (e.g., Redux, Context API, or Zustand) and data fetching (React Query/SWR).
• Deep understanding of database management (e.g., MSSQL, PostgreSQL, MongoDB) and caching strategies (e.g., Redis).
• Experience with cloud platforms (Azure preferred) and CI/CD pipelines for automated deployment.
• Proficiency in other relevant languages (e.g., Python, Go) or frameworks is an advantage.
• Proven ability to identify and implement technical solutions that meet business needs and represent value for money.
• Highly organized and detail-oriented, with a focus on writing clean, maintainable, and well-tested code.
• Strong interpersonal and communication skills, enabling collaboration within a cross-functional squad and translating complex technical concepts for stakeholders.
• Self-driven and accountable, with a strong sense of ownership over end-to-end application architecture.
• Deep experience with Agile delivery models and tools such as Jira or Azure DevOps.

Please note:

We have a number of similar positions currently, and in the future, which we would like to discuss with you should you indicate your interest in this role. When we receive your application for this role, we will contact you to advise you of our process for other similar positions.

Stelfox is fully compliant with GDPR regulations and you can read more in our privacy policy here: https://www.stelfox.com/privacy-policy-gdpr/

Your shared data will not be disclosed or transferred to a third party data controller or data processor located outside the EEA unless we have obtained your express consent.

We look forward to working with you.