Senior Frontend Developer

The Senior Fullstack Developer will be responsible for the following:

• Design, develop, and maintain scalable, high-performance web applications using Next.js (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 Full-stack 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 Next.js (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.

• An open mind and flat structure where every voice is welcome.
• A work environment built on transparency, seamless communication, trust, and a sensible approach ,combined with mixed cultures and a speaking environment
• Individual assessments every 6 weeks with your line manager
• Performance review every  6 months
• 15 days of annual leave and + 6 days of fully paid sick leave per year – can be used for the care of sick child
• Christmas Holiday
• Competitive salary
• Bonus: 13th-month Salary
• Social insurance for employees who pass their probation

Learn more about Xenia Tech