Senior Front-end Developer (React, TypeScript, English)

The role will develop React front-end applications and components integrated into an existing enterprise CMS platform (Adobe Experience Manager), across several brands. Mostly TMA/ evolutive maintenance on an existing codebase, under French onshore technical supervision.
Job Description
Design and develop scalable, high-performance web applications using React and TypeScript.
Drive performance optimization through rendering strategies, code splitting, caching, and bundle management.
Define and implement front-end architecture, state management, and reusable component systems.
Participate in Agile development, including technical discussions, estimation, and code reviews.
Enforce clean, testable code, strong practices in testing, CI/CD, and design patterns.
Collaborate closely with Product, UX/UI, and Backend teams to translate complex requirements into scalable solutions.
Lead junior developers, provide technical guidance, and support problem-solving on complex frontend challenges.
Contribute to technical roadmap and strategic decisions.
Desired Skills And Experience
5+ years' hands-on experience with React and TypeScript: hooks, context, composition, and performance patterns.
Solid understanding of rendering modes (CSR, SSR, SSG) and hydration, including how to diagnose and fix a hydration mismatch, and their impact on SEO, Core Web Vitals, caching, and personalization.
Strong HTML5 and modern CSS: semantic markup, SCSS, scoped styling, responsive design, and cross-browser discipline.
Experience with design system integration: token-based theming, reusable components, and Storybook (or equivalent).
Bundle discipline: code splitting, lazy loading, and bundle size awareness.
Hands-on unit and component testing with Jest or Vitest and Testing Library; familiarity with E2E testing (Playwright or Cypress).
Familiarity with Git-based workflows, CI/CD pipelines, and code review processes.
Understanding of accessibility standards, including WCAG AA compliance, semantic markup, assistive technology support, and accessibility testing methodologies.
Experience integrating front-end applications with APIs, external systems, and third-party services: validation, error handling, privacy requirements, and resilient user journeys.
Good communication in English, written and spoken.
Comfortable in brownfield code and TMA work: reads and understands before rewriting, favors targeted fixes, and works with hotfix and SLA discipline.
Communication and collaboration skills: able to work independently and in a team environment.
Nice-to-have Skills
Micro-frontend architecture: independently deployed front-end applications while ensuring effective versioning, isolation, interoperability, and scalability.
AEM exposure: how a CMS component embeds and configures an external front-end app, author vs publish, dispatcher caching.
Multi-brand or multi-locale platform experience.
Automotive experience.
Why ekino?
High-ownership working environment: You will take full responsibility and control of your missions contributing to the team's success.
Continuous skill improvement with new technologies, challenging projects, on-the-job coaching, and training programs.
Annual performance review & bonus: recognize your efforts and identify development/ improvement needs.
Clear career path: define your career development with long-term vision.
Be secured in your mind with employee's care: private healthcare insurance package, medical check-up, support allowance...
Great-place-to-work activities (company trip, sport clubs...): enhance teamwork spirit and facilitate your work-life harmony.
Thank you for your time and enthusiasm in our career opportunities.
Please kindly note that shortlisted candidates will be contacted within 3 weeks of application. Alternatively, we will reach out to you when another suitable chance arises in the future.