Software Engineer, C++/QML

🏷️Title: Software Engineer (C++/QT)

👫Department: Technology

📍Location: Remote within EU/UK

About Block Labs

Block Labs is a leading force in the Web3 space, incubating, investing in, and accelerating top-tier fintech, crypto and iGaming projects. With a mission to shape the future of decentralized technology, we partner with visionary startups to raise funding, refine product-market fit, and grow their audiences. Our diverse team drives innovation, using deep industry expertise and an extensive network to empower the next wave of blockchain-driven companies. At Block Labs, we’re passionate about turning bold ideas into breakthrough success.

About The Role

We are looking for a Software Engineer (C++/QT) with strong expertise in building desktop and web client applications. The ideal candidate will be highly skilled in crafting intuitive, performant, and visually polished user interfaces using Qt for cross-platform environments, with a primary focus on desktop and web delivery. Mobile experience is still important, but will be a secondary requirement to ensure flexibility across platforms.

In this role, you will be a key contributor to delivering modern, feature-rich user interfaces for our products, collaborating closely with design, backend, and product teams to translate complex requirements into seamless user experiences.

Key Responsibilities

• Develop and maintain desktop and web client applications using Qt.
• Collaborate with UX/UI designers to create responsive, visually appealing, and user-friendly interfaces.
• Implement cross-platform functionality ensuring consistent experiences across Windows, macOS, and browsers, with mobile support as needed.
• Integrate with backend services via REST, WebSocket, and gRPC APIs.
• Optimize application performance, responsiveness, and resource usage.
• Maintain and evolve a modular and scalable codebase, applying clean architecture principles.
• Participate in code reviews, unit testing, and CI/CD workflows to ensure reliability and quality.
• Stay up-to-date on Qt best practices and emerging cross-platform UI technologies.
  
  

About You

• 5+ years of professional software development experience, with strong proficiency in C++ and Qt.
• Proven track record delivering desktop and/or web applications using Qt.
• Experience with QML, Qt Widgets, and Qt for WebAssembly.
• Familiarity with UI/UX principles and creating pixel-perfect interfaces.
• Strong understanding of cross-platform development challenges.
• Comfortable integrating with APIs (REST, gRPC, WebSockets).
• Mobile development experience (Qt for Android/iOS) is a plus.
• Strong debugging, optimization, and problem-solving skills.
• Excellent collaboration and communication abilities in a distributed team.