Senior Frontend Developer

IO Interactive are seeking a highly skilled and motivated Senior Frontend Developer to join our team. As a Senior Software Engineer, you will play a key role in designing and implementing cutting-edge web applications. We are looking for someone who is not only an expert in web development but also a versatile generalist, and eager to explore and master new technologies and tools.
If you are passionate about pushing the boundaries of web development, enjoy collaborating with cross-functional teams, and thrive in a fast-paced environment, this is the perfect opportunity for you.
What you will do:
- Develop high-quality, scalable, and efficient web applications.
- Collaborate with product managers, designers, and other stakeholders to define project requirements, scope, and objectives.
- Take ownership of the entire feature development lifecycle, from design and implementation to testing and deployment.
- Identify and address performance bottlenecks and optimize application performance.
- Conduct code reviews, provide constructive feedback, and mentor junior engineers.
- Stay up to date with the latest trends and best practices in web development and bring new ideas to the team.
- Proactively identify and tackle technical challenges, demonstrating a willingness to learn and adapt to new technologies.
Who you are:
- Bachelor's degree in computer science, engineering, or a related field (or equivalent work experience).
- Extensive experience in web development.
- Solid understanding of web technologies, including HTML, CSS, and responsive design principles.
- Strong knowledge of front-end frameworks/libraries.
- Familiarity with back-end technologies and RESTful APIs.
- Experience with version control systems (e.g., Git) and package managers.
- Ability to write clean, maintainable, and reusable code with a strong emphasis on software engineering best practices.
- Excellent problem-solving and debugging skills.
- Strong communication skills and ability to collaborate effectively with cross-functional teams.
- Self-motivated, detail-oriented, and able to work independently with minimal supervision.
Who we are:

IO Interactive is an independent videogame development and publishing company with studios in Copenhagen, Malmö, Barcelona, Istanbul and Brighton. As the creative force behind some of the most talked-about multiplatform video games in the last decade, we are committed to creating unforgettable characters and experiences – all powered by our award-winning, proprietary Glacier technology.
IOI is a studio that values in-person collaboration. Being together helps us focus our collective energy on our immediate goals. For us, being both in-office as well as connected across our studios helps us integrate our teams faster, strengthen relationships, and improve knowledge-sharing. We believe that the more time we spend together, the more quality and progress we achieve for our games and players.
We know that to achieve those goals, we need courage, talented people and a great working environment – and we do our utmost to have all of that. Across our multiple studios, we’re working on several projects. Crucially though, we’re all one team. We value the work and impact that each person brings to the table and we actively encourage new ideas, whilst listening to your insights along the way.
We have a dedicated team of People Managers, who look after you as an individual and as an employee. With more than 40 nationalities, we know that everyone is different and we are proud to have a reputation for being a friendly workplace with highly-talent people.
Learn more about our Glacier engine.
- Department
- Programming
- Locations
- Istanbul, Copenhagen, Brighton, Barcelona, Malmö
- Remote status
- Hybrid
- Vacancy ID
- VAC0818

About IOI
IO Interactive is an independent video game development and publishing company with studios in Copenhagen, Malmö, Barcelona, Brighton and Istanbul. As the creative force behind some of the most talked-about multiplatform video games in the last decade, we are dedicated to creating unforgettable characters and experiences – all powered by our award-winning proprietary Glacier technology.
Senior Frontend Developer
Loading application form
Already working at IOI?
Let’s recruit together and find your next colleague.