Front-end Developer (React.js)

🚀 Who Are We?

Welcome to Welltech—where health meets innovation! 🌍 As a global leader in Health & Fitness industry, we’ve crossed over 220 million installs with life-changing apps, all designed to boost well-being for millions. Our mission? To improve the health of millions of people through intuitive nutrition trackers, powerful fitness solutions, and personalized wellness journeys—all powered by a diverse team of over 700+ passionate professionals with a presence across 5 hubs.

Why Welltech? Imagine joining a team where your impact on global health and wellness is felt daily. At Welltech, we strive to be proactive wellness partners for our users, while continually evolving ourselves.

What We're Looking For
We’re seeking product-oriented and mission-driven Frontend Engineers to join our Product Growth organization. In this role, you’ll work on highly visible parts of the user funnel—from activation to conversion—using modern technologies and experimentation to optimize engagement, trust, and revenue.

To support our mission of delivering smarter, more personalized health journeys, we've restructured our product organization around the user journey - two critical teams have emerged from this transformation: Purchase and Monetization.

These teams play a pivotal role in shaping how users first engage with our products, how we earn their trust, and how we convert interest into lasting value. Whether it's building seamless onboarding flows or optimizing pricing strategies, the work you do here directly affects millions of users and real business outcomes.

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, and Redux Saga

• 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 working with experimentation platforms and running A/B or multivariate tests

• Experience with Material UI and its design philosophy

• Familiarity with Next.js, SSR, and performance optimization

The confidence to set up or optimize bundler configs (Webpack/Vite) from scratch

Candidate journey: ⭕️ Recruiter call ----> ⭕️ Live Code Design 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