Front End Web3 Jobs in Europe

OpenTag is an International company within the field of Sports Betting and iGaming. 

Our mission is to create the best software through empowered teams, centralized around our product. We do this to help great organizations reach ambitious goals and fulfill their purpose with equally great teams.

We are currently looking for a Senior Front-End Developer to join our Platform Team and play a key role in developing scalable, high-performance solutions.

• 5+ years of professional experience with TypeScript/JavaScript

• 5+ years of experience with React

• Strong understanding of UI libraries, CSS/SCSS, and responsive design principles

• Experience working in Agile environments (SCRUM or Kanban)

• Solid grasp of OOP concepts and software design patterns

• Strong teamwork and communication skills

• Fast learner with the ability to master new technologies quickly

• Experience with Next.js or other SSR-based frameworks, GraphQL clients, Node.js, Express, gRPC, or Apollo Server/Client will be a strong plus

• Upper-Intermediate level of English or higher

What You’ll Do

• Participate in company and team development meetings

• Develop new features following best practices, coding standards, and company guidelines

• Identify and refactor technical debt in legacy codebases

• Contribute to cross-team code reviews and maintain clear communication with other teams

• Participate in production deployments and release activities

• Debug and resolve issues, ensuring long-term maintainability and stability

• Mentor junior engineers, sharing knowledge and supporting their growth

• Continuously learn, explore, and improve your coding skills and understanding of the platform

What do We offer?

• An inspiring workspace with awesome teammates and a great vibe

• The chance to build a scalable online betting platform — from the ground up

• Cutting-edge tech stack and real impact on a fast-growing product

• Learning opportunities with a dedicated training budget to level up your skills

• 25 vacation days + an extra day off to celebrate your birthday 🎉

• Premium health insurance for your peace of mind

• Birthday vouchers and little surprises along the way

• Free snacks, team lunches, and great coffee (because fuel matters ☕)

• Sports card, transportation, and food allowance

• Quarterly team events that bring everyone together

Excited to join us? Click the Apply button and let’s build something amazing together!