Netrolynx AI
Full Stack Developer
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About The Company
Devonshire Hayes Recruitment Specialists Limited is a reputable recruitment agency dedicated to connecting talented professionals with leading organizations across various industries. With a strong focus on quality service and personalized approach, we strive to understand the unique needs of both our clients and candidates. Our expertise spans multiple sectors including technology, finance, healthcare, and more, ensuring we can match the right talent with the right opportunities. Committed to fostering long-term relationships, we prioritize transparency, integrity, and excellence in all our dealings.
About The Role
We are seeking a skilled Mid-Level Full-Stack JavaScript Developer to join a dynamic team working on a cutting-edge platform aimed at enhancing the online customer journey. This role involves developing and maintaining a comprehensive single-page application using React on the front end, alongside robust back-end services built with Node.js. The successful candidate will contribute to building a seamless, secure, and scalable system that guides consumers through processes such as identity verification, e-signature, and submission. This position requires onsite presence four days a week in Upminster, Essex, and offers an exciting opportunity to work on a regulated consumer product with significant impact.
Qualifications
The ideal candidate will possess a minimum of three years of professional experience in JavaScript development, demonstrating proficiency in both front-end and back-end technologies. Strong knowledge of React, including hooks, routing, controlled forms, and state management, is essential. Experience in building and consuming REST APIs using frameworks such as Fastify or Express is required. Practical understanding of SQL, particularly schema design, transactions, joins, and indexes, is necessary, with SQL Server experience considered advantageous. A solid testing mindset, emphasizing meaningful test coverage at all layers, is highly valued. Excellent written communication skills and the ability to document technical decisions clearly are also important for success in this role.
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Responsibilities
- Develop and maintain customer-journey screens and shared components in React 19, utilizing React Router 7, Vite, and Sass/SCSS across multiple branded sites from a single codebase.
- Design and implement back-end features in Node.js, including Fastify APIs, Express backend-for-frontend, and durable background jobs processed via a SQL-backed outbox queue.
- Design, evolve, and maintain SQL Server schemas through forward-only migrations, employing parameterized queries and transactional business logic to ensure data integrity.
- Integrate third-party services such as identity verification and lead management providers, creating well-defined interfaces to abstract transport details and facilitate mocking during testing.
- Write comprehensive tests at every layer, including Vitest unit and route tests, Testing Library component tests, and Playwright end-to-end journeys, ensuring robustness and reliability of the platform.
- Implement features with compliance and security in mind, including input validation, PII handling, audit trails, idempotent retries, and graceful degradation to meet regulatory standards.
- Collaborate with team members to document technical decisions, follow established conventions, and contribute to continuous platform improvement as the product evolves.
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Benefits
Our client offers a competitive salary package, along with comprehensive benefits including health insurance, pension contributions, and paid leave. The role provides opportunities for professional growth through ongoing training and development programs. You will be part of a collaborative and innovative team environment that encourages knowledge sharing and continuous improvement. Additionally, the company promotes a healthy work-life balance and values diversity and inclusion within its workforce.
Equal Opportunity
Devonshire Hayes Recruitment Specialists Limited is committed to creating an inclusive environment for all employees. We are proud to be an equal opportunity employer and do not discriminate based on race, gender, age, religion, sexual orientation, disability, or any other protected characteristic. We believe that diverse teams foster innovation and drive success, and we welcome applications from individuals of all backgrounds who are passionate about contributing to our client's mission.
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