Senior Frontend Engineer: Lead Architecture & High-Impact UI

Relesys; København; Hybrid; DKK 417,000 - 584,000; Full time

Benefits offered by this job

25 days paid vacation per year

Office in Vilnius, London, Odense and

Free coffee, tea, soda at the office

Global Summer Party in Copenhagen

Job summary

Relesys is seeking a Senior Frontend Engineer to lead complex frontend initiatives across the platform. You will own problems from discovery through production, collaborating with Product, Design and backend teams to deliver accessible, high-quality experiences.

This hands-on role includes technical leadership and mentoring within a growing, international team. You will evolve frontend architecture, contribute to design systems, and help deliver AI-assisted capabilities while maintaining a

Qualifications

• 5+ years of professional frontend development experience.
• Strong TypeScript and browser fundamentals; production React/Angular experience.
• Experience building accessible, responsive, well-tested UI.
• Ability to lead frontend initiatives from concept to production.

Responsibilities

• Own ambiguous, high-impact frontend initiatives from discovery through production.
• Collaborate with Product and Design to clarify problems and shape solutions.
• Lead technical discovery and frontend design with trade-offs consideration.
• Break complex initiatives into milestones with testing and feature flags.
• Design accessible, responsive experiences while evolving architecture.

Skills

5+ years frontend experience

TypeScript

React

Angular

Team leadership

English communication

Education

Bachelor's degree in Computer Science or related field

Tools

Design systems

Job description

Relesys is seeking a Senior Frontend Engineer to lead complex frontend initiatives across the platform. You will own problems from discovery through production, collaborating with Product, Design and backend teams to deliver accessible, high-quality experiences.

This hands-on role includes technical leadership and mentoring within a growing, international team. You will evolve frontend architecture, contribute to design systems, and help deliver AI-assisted capabilities while maintaining a