Frontend Engineer

Who Are We? We are Welltech — a global company with Ukrainian roots and a powerful mission: to move everybody to start and stay well for life. Today 25.5 million users have trusted Welltech to help them build healthy habits — a testament to the real value our innovative, engaging wellness solutions deliver every day. 🌍 With five hubs across Cyprus, Ukraine, Poland, Spain and the UK and a diverse, remote-friendly team of 700+ professionals, we continue to scale rapidly. Our innovative apps — Muscle Booster, Yoga-Go and WalkFit — empower millions to transform their lifestyles and unlock their personal wellness journeys. Welltech is where your impact becomes real. And our values clearly attest to that: we grow together, we drive results, we lead by example and we are well-makers. If this looks like you and you thrive in a fast-paced environment, you’ll fit right in at Welltech. Let’s build wellness for millions together. Key responsibilities:Collaborate Across Functions: Partner with Engineers, QA, Product Analysts, and Product Managers to design solutions that solve real user and business problems Build with Purpose: Develop high-impact features using a modern stack (React 18+, TypeScript 5+, Styled Components, React Query, Vite) Deliver Quality at Speed: Build clean, tested, and maintainable code with performance, scalability, and UX in mind Contribute to Team Excellence: Take part in thoughtful code reviews, documentation, and monitoring (Sentry, Datadog) Learn & Iterate: Participate in A/B tests, analyze outcomes, and use insights to guide product and code decisions Own What You Build: From development to deployment, be accountable for delivering features that perform reliably in production Required skills:

• Experience in frontend development (3+ years) at a product-driven company
• Proficiency in JavaScript (ES6+), TypeScript, React
• Strong understanding of REST APIs, Core Web Vitals, and responsive design
• Solid grasp of software design principles (SOLID, design patterns, maintainable architecture)
• Experience working in cross-functional, fast-paced agile teams and communicating effectively in English (C1)
• A curious, user-first mindset with a desire to deliver intuitive, delightful digital experiences

Nice to have:

• Experience with Redux Saga, MobX, React Query
• Experience working with experimentation platforms and running A/B or multivariate tests
• Experience with Material UI and its design philosophy
• Familiarity with nx, SSR, and performance optimization
• Familiarity with authentication and identity management services

The confidence to set up or optimize bundler configs (Webpack/Vite) from scratch Candidate journey: ⭕️ Recruiter call --> ⭕️ Live Code Review --> ⭕️ System Design interview---> ⭕️ Meet the hiring manager ✨ Why You’ll Love Being Part of Welltech:

• Grow Together: Join a culture that champions both personal and professional growth. Here, you’ll thrive as we learn, evolve, and succeed together.
• Lead by Example: No matter your role, your leadership matters. Every team member is empowered to inspire and make an impact.
• Results-Driven: We’re all about achieving meaningful outcomes. It’s not just about the effort, but the difference we make every day.
• We Are Well-Makers: Be part of a movement that’s creating a healthier, happier world. Together, we make well-being a reality!

Check out some of our products Muscle Booster — https://musclebooster.fitness/ Yoga-Go — https://yoga-go.io/ WalkFit - http://walkfit.pro