Senior Frontend Developer (Contractor)

Location: Wrocław or Warsaw (hybrid mode)We’re looking for a Senior Frontend Developer to take ownership of the architecture and development of key frontend components in Opera One, a product used by millions worldwide.You’ll join a talented team focused on user-facing features, stepping in as the frontend authority to guide best practices and ensure technical excellence. This is a hands-on role where your work directly shapes the user experience, with visible impact released to users soon after implementation. It’s an opportunity to take full ownership, bring architectural leadership, and make a lasting mark on one of the most user-centered browsers in the world.Role & ResponsibilitiesResponsibility for the architecture of our frontend code,AI Chat & page context integration into Opera One,Start Page maintenance and adding new features,Creating standardized controls / Design system components to re-use across all Opera One frontend pages,Designing all frontend pages for auxiliary features in Opera One (e.g. settings, history, bookmarks).Job Requirements7+ years of professional experience working with JavaScript,Strong expertise in the React framework (must-have),Comfortable navigating and improving large, existing codebases, while also capable of building new projects independently,Experience with performance optimization and a solid understanding of how websites render is nice to have.What’s On OfferAt Opera, you’ll join a diverse and inclusive team of experienced, supportive professionals who value creativity and collaboration. We work in a flat structure with short decision-making paths, use smart technology, and support your ongoing skill development in a friendly and empowering environment.Interested?We’d love to hear from you! Applications are reviewed on a rolling basis, so we encourage you to apply soon. Please submit your CV in English. Have questions about our recruitment process, remote work, or benefits? Check out our FAQ page for more details.