Senior Frontend Engineer (React / Next.js)

Binariks is looking for an experienced Senior Frontend Engineer (React / Next.js) to join our client’s project, which develops secure, standards-compliant digital health solutions that empower researchers and public health institutions to advance evidence-based medicine. The company builds scalable research infrastructures, supports international standards such as FHIR, OMOP, and CDISC, and collaborates with some of the world’s leading clinical institutions.

• Design, build, and ship high-quality frontend features — writing accessible, performant, maintainable, and well-tested code.
• Develop modern, server-rendered web applications using React and Next.js, with a strong focus on UX, performance, and component reusability.
• Contribute to software design and architecture decisions, and take part in code reviews.
• Work closely with designers, QA, backend engineers, and product management as part of an integrated team.
• Engage directly with users — joining feedback sessions and user research to build a deep, end-to-end understanding of the product and the problems it solves.
• Apply security and privacy by design — handling authorization flows and patient/study data with care and in line with GDPR/HIPAA expectations.
• Help shape the frontend platform: design systems, component libraries, accessibility standards, and frontend tooling.

• 5+ years of professional experience as a frontend engineer, with strong production experience in React and Next.js.
• Deep fluency in HTML, CSS, and JavaScript/TypeScript, with hands-on experience building accessible, semantic, and responsive UIs.
• Proven experience with modern React patterns: hooks, server components, SSR/SSG/ISR, routing (App Router), state management, data fetching, and caching strategies.
• Experience with frontend testing (unit, component, end-to-end — e.g., Jest, Testing Library, Playwright/Cypress) and CI/CD pipelines.
• Strong focus on performance, accessibility (WCAG), security, and observability of frontend systems.
• Comfortable consuming REST and/or GraphQL APIs and collaborating closely with backend engineers on contracts.
• Professional written and spoken English.