Frontend Developer

About us: Gismart is a value-driven mobile app developer with a strong presence in the Health & Wellness, Utilities, and Music app markets. We have recently achieved a significant milestone of over 1 billion downloads worldwide, taking a step toward our mission of cultivating the well-being of people worldwide. With headquarters in London, UK, Gismart is a dynamic global company with a reach extending across Europe and far beyond. Our determined team comprises over 350 individuals who bring diversity, creativity, innovation, and relentless drive to the company. Gismart unites professionals from diverse backgrounds in entertainment, music, and tech, allowing us to play to each other’s strengths and succeed as a team. Our mission: Become a stepping stone on our customers’ journeys of self-improvement. Our values: • Deliver what matters • Respect and support others • Initiate and own • Voiceopenly • Execute with quality If you are passionate about mobile app development and want to join a company that’s reshaping the industry, Gismart is the place for you. We provide exciting career opportunities, a supportive workplace culture, and the chance to contribute to a team that is making a tangible impact. For more information on Gismart, visit gismart.com. What you will do: • Active development of new features for existing web funnels • Development of single page applications to realize web2app flow • Integration of analytics systems, A/B testing, payment systems Key Qualifications: • Strong understanding of modern JavaScript (ES6+) and static typing with TypeScript • Proficiency in building applications using functional components and React Hooks • Experience with React Query for server state and Zustand for client state • Skilled in writing modular and maintainable styles using styled-components Would be a plus: • Basic knowledge of HTTP, the DOM, and the JavaScript event loop • Experience working with RESTful APIs • Familiarity with no-code/low-code