Senior Frontend Developer (with Technical Leadership Focus)

Senior Frontend Developer (with Technical Leadership Focus)

Kambi

Copenhagen, Denmark

The Role

We are looking for a curious, product-focused, and innovative Senior Frontend Developer to join our team and help shape the user experience of our platform.

This is a hands-on senior role in a small, collaborative team where you will combine technical leadership with active development. You’ll build high-quality frontend solutions while helping guide technical decisions, improve development practices, and elevate the team’s engineering standards.

Working closely with Product Owners and designers, you will transform ideas into scalable, user-centered solutions and contribute to the long-term evolution of our frontend architecture.

What You’ll Do:

• Build and maintain scalable, high-quality frontend applications using React and modern development tools;
• Take ownership of frontend architecture and key technical decisions;
• Act as a technical sounding board for the team through code reviews, knowledge sharing, and mentoring;
• Collaborate closely with Product Owners and designers to deliver intuitive and impactful user experiences;
• Continuously improve performance, maintainability, and developer experience;
• Identify opportunities to simplify, optimize, and modernize the frontend stack;
• Contribute to a team culture focused on ownership, collaboration, and continuous improvement.

AI & Innovation

We actively explore how AI and emerging technologies can enhance both our product and our development process.

In this role, you will be encouraged to:

• Experiment with and integrate AI-powered capabilities where they create real product value;
• Use AI-assisted tools to improve development workflows and productivity;
• Challenge existing approaches and introduce innovative solutions to engineering and product challenges.

We’re looking for someone who not only understands these trends but is curious enough to experiment with them in practice.

Who You Are

You are an experienced frontend engineer who enjoys ownership, collaboration, and solving complex problems. You care about building solutions that are maintainable, scalable, and meaningful for users.

You likely:

• Have strong experience with React and modern frontend development;
• Write clean, maintainable, and scalable code;
• Are comfortable owning technical decisions and driving solutions forward;
• Have experience mentoring colleagues or improving engineering practices within a team;
• Think in terms of product impact and user experience, not just implementation;
• Are proactive, self-driven, and thrive in small, autonomous teams;
• Stay curious and keep up with new technologies and industry trends;
• Have hands-on experience with - or strong interest in - AI in real-world development.