Senior Frontend Developer NextJS, TypeScript, AWS

• The Senior Frontend Developer will be responsible for the following:
• Design, develop, and maintain scalable, high-performance web applications using [protected info] (App Router), ReactJS, and TypeScript.
• Lead frontend architecture decisions, including Server Components, Client Components, data fetching strategies, and rendering patterns (SSR, SSG, ISR).
• Build and integrate frontend applications with Headless WordPress (REST / GraphQL).
• Ensure pixel-perfect UI implementation and smooth collaboration with designers.
• Optimize applications for performance, SEO, accessibility, and best practices.
• Collaborate closely with Product Managers, Designers, and Backend engineers to deliver high-quality solutions.
• Conduct code reviews, enforce frontend standards, and mentor junior developers.
• Identify technical risks, performance bottlenecks, and proactively propose solutions.
• Deploy and maintain frontend solutions on AWS infrastructure (CloudFront, S3, Lambda, etc.).
• Maintain clean, maintainable, and testable codebases following modern FE best practices.

The Senior Frontend Developer will report directly to the Line Manager and will possess the following attributes:

• 5+ years of professional experience in web development, with a strong focus on Frontend.
• Expert-level proficiency in [protected info] (App Router, Server Components, API Routes, performance optimization).
• Strong experience with ReactJS, modern hooks, state management, and component architecture.
• Excellent TypeScript skills.
• Solid experience working with Headless CMS, especially Headless WordPress.
• Good understanding of PHP & WordPress customization (mainly for integration and content modeling).
• Experience deploying frontend applications on AWS (CloudFront, S3, Lambda, EC2, etc.).
• Strong knowledge of CI/CD pipelines, Git workflows, and modern frontend tooling.
• Deep understanding of web performance, SEO, and frontend security best practices.
• Excellent English communication skills (written & verbal).
• Strong ownership mindset and ability to lead frontend initiatives.

Nice to Have

• Experience with Docker, Kubernetes, or containerized FE deployments.
• Familiarity with monitoring & performance tools (Datadog, New Relic, Lighthouse).
• Experience with GraphQL (Apollo, WPGraphQL).
• Previous experience in client-facing or consulting environments.
• Knowledge of design systems and component libraries.

Xenia offers a great working environment and great chances to grow with the company as we strive for success. We offer our team members the following:

• Become part of a dynamic, hard-working team in a young company where you have the possibility to grow together
• A work environment built on transparency, seamless processes and a sensible approach combined with mixed cultures and English-speaking environment
• F2F sharing every 6 weeks with your line manager
• Performance reviews every 6 months
• Varied and challenging work to help you grow your technical skill set
• Vietnamese+ UK Public holidays off
• 15 days of annual leave
• 6 days of fully paid sick leave per year - can be used for care of sick child
• Bonus: 13th-month Salary
• High-end Health insurance after passed probation, with the opportunity to obtain for your whole family
• Free English classes, free self-improvement books, free training courses, parental leave support
• Working on hybrid model to support a healthy work/life balance

We strive towards a fun and healthy workplace where we offer Happy Hour, Lunch & Learn, Celebrate Birthday and many more fun activities to create that family setting that we enjoy when a part of the team being at Xenia Tech.