Callstack was founded in 2016 by Mike Grabowski and Anna Lankauf. Our company provides top cross-platform consultancy & development in React.js and React Native. We co-create the technology and collaborate with the Meta team on shaping the technology as core contributors and innovators.Our main goal is to drive and accelerate software development innovation. To achieve that, we follow our major rule:We don’t follow best practices. We set them!Callstack also organizes React Universe Conf - the only community- driven and fully dedicated to React Native conference in Europe.What is unique about working at Callstack? You will work with the best React Native experts on applications used by millions worldwide. You can develop your own ideas in our R&D program. If you want to bring your visions to life - Callstack will support you. You have a possibility to contribute to our projects in Open Source like React Native Paper, Linaria, RN Testing Library etc. There are plenty of possibilities to showcase your expertise: You can speak at our React Universe Conf, be featured in our blog, or React Universe On Air episode. You are the one to decide in which area you want to grow, you’ll have an individual self-development budget to upgrade your soft skills, managing skills or become a Mentor in the future. Join us and work with the TOP Silicon Valley and Fortune 500 companies in the USA!As a Senior Mobile C++ Developer you will: Act as a technology expert for our clients, discuss challenges and advise in architectural discussions Drive the development process by providing expertise and solving the most complex programming issues Create project documentation Collaborate with development teams, CTOs, Project Managers, and Product Owners from all around the world Have multiple possibilities to contribute to the Open Source community by working on projects led by our CTO, React Native Core Contributors, and our Senior Developers Be one step ahead exploring technologies of tomorrow, being a part of our R&D activities You are the right candidate if you are: A C++ developer with extensive knowledge (C++ 11/17) Strongly experienced in CMake and some GUI frameworks Experienced in Business Consulting and eager to discuss technical challenges on a daily basis Know mobile development and underlying native platforms (iOS / Android) Driven towards learning new technologies and knowledge-sharing initiatives Able to quickly gain new technical expertise Fluent in English (C1) both spoken and written A great communicator and team player Proactive and self-driven Nice to have (not a must, but might be beneficial): React / React Native development experience Experience in embedded / operating systems development Game development experience Why work with us? Because you can: Realize your potential in our R&D program Work on software used by millions Take part in our Open Source projects Grow in your unique expert role Code with the top experts and community leaders Showcase your expertise by speaking at our conference, being featured in our blog or podcast episode Co-create and shape core technology Join the React Native community Develop soft skills What we offer: 24 paid days off & 30 days paid sick leave for B2B contractors Fully-covered life insurance Private healthcare for you and your family Free access to mental health platform - Helping Hand Multisport Card or monthly allowance for other sports activities Individual Wellbeing & Development Budget Monthly lunch allowance Accounting costs refund for B2B contractors Flexible working hours and fully remote work possibility Cool office in Wrocław city center Magnificent team events and activities Company-wide workation and team building workshops Top-notch hardware - Apple devices Possibility to participate in React Universe Conf