Playful Engineer

Ciklum is looking for a Playful Engineer to join our team full-time in the Czech Republic. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: As a Playful Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. You will join a long-term strategic partnership with a leading Danish company — a globally loved brand creating products and experiences that inspire generations of children and families worldwide. Our team is integrating a proprietary programming language that will power a unified platform across the client's entire product ecosystem. The product is already on the market and actively used by end-users. You will be developing new releases, improving the architecture, enhancing features, and ensuring that everything works without a hitch — because when kids play, there is no room for bugs. You will work within a large cross-functional team of around 25 Ciklum engineers alongside 50+ client-side designers, project managers, testers, and architects — collaborating closely to deliver a seamless and joyful user experience. Responsibilities: Design and develop software features for a performance-critical, user-facing product Rearchitect and create new product versions — improving existing functionality and introducing new capabilities Integrate tech stacks across multiple client products onto a unified platform Support and enhance the game flow to ensure a seamless, enjoyable, and bug-free user experience Implement new features and game mechanics with a strong eye for quality and user interaction Develop supporting tools, automation, and toolchains (linters, debuggers, build systems) Analyze system constraints and optimize implementations for performance, memory, and concurrency Collaborate closely with designers to translate product requirements into robust technical solutions Participate in code reviews, technical discussions, and mentor mid-level engineers Troubleshoot and improve existing functionality across a large, complex codebase Requirements: Strong Python skills — production-quality code, not just scripting Strong analytical and problem-solving skills — you think before you code Experience working within large, complex codebases A genuine feel for user experience quality — you notice when something is off Strong debugging skills and a zero-tolerance mindset for bugs Solid knowledge of Git version control Strong self-management — able to drive tasks from design to delivery independently Proficient in verbal and written English communication Passion for building high-quality, clean code Desirable: Experience with C, C++, or Rust Familiarity with compiler design, ASTs, type systems, or optimization techniques Knowledge of embedded systems or low-level memory management Experience with LLVM, GCC, or other compiler frameworks Experience with Docker Mobile platform experience (touch input, camera, GPS, Bluetooth, push notifications) What’s in it for you? Flexible working hours Home office option 5 weeks of holiday 5 sick days Multisport Card Meal allowance Internal trainings including workshops and seminars Paid certifications and technical as well as soft-skills training Possibility to participate in international conferences Fresh fruit, coffee, and a weekly company breakfast in the office Loyalty bonus after 5, 10, 15 and more years with the company Referral bonus programme Corporate events including team building, outdoor activities, Christmas party, health week, summer ice cream, and more Hybrid and remote working options available across our Czech offices in Prague, Hradec Králové, and Zlín About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. With delivery centers in Prague, Hradec Králové, and Zlín, our Czech team delivers end-to-end solutions across industries. Here, innovation thrives through collaboration, and every idea drives our partners' success. Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum. #LI-IK1