Senior Frontend Engineer: UI, Accessibility & Performance

twentysix; Gennep; On-site; EUR 60,000 - 90,000; Full time

Job summary

Happy Horizon in Gennep is looking for a frontend engineer to join the Technology team, working with backend developers, UX designers, and solution architects on client delivery and internal tooling.

You will translate Figma specs into production-ready UI, own frontend decisions within your squad, review code, and help junior developers grow. Projects run in two-week sprints with client demos.

Qualifications

• Experience with modern JavaScript frameworks for frontend development.
• Ability to translate Figma specifications into production-ready UI.
• Comfort in reviewing code and mentoring junior developers.
• Wamiliarity with component libraries, accessibility, and performance-focused frontends.

Responsibilities

• Own technical decisions within your squad and review code.
• Collaborate with designers to translate figures specs into UI.
• Support client delivery and internal tooling projects.
• Help junior developers grow and contribute to two-week sprint cycles.

Job description

Happy Horizon in Gennep is looking for a frontend engineer to join the Technology team, working with backend developers, UX designers, and solution architects on client delivery and internal tooling.

You will translate Figma specs into production-ready UI, own frontend decisions within your squad, review code, and help junior developers grow. Projects run in two-week sprints with client demos.