Offer summary

Qualifications:

Senior-level experience in frontend development within a product environment., Proficiency in JavaScript (ES6+) and TypeScript, with a focus on performance and maintainability., Advanced knowledge of React, including Redux Saga and web performance optimization., Strong understanding of web technologies, APIs, security, and responsive design..

Key responsibilities:

Collaborate with cross-functional teams to design and develop user-facing features.

Translate business requirements into high-quality, maintainable code.

Own system performance, scalability, and data integrity, including monitoring and troubleshooting.

Drive the evolution of user identity and privacy systems to enhance user experience.

Job description

🚀 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 lifechanging apps, all designed to boost wellbeing 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 Were Looking For
We’re on the hunt for Senior Frontend Engineers who are ready to take ownership, lead with innovation, and build exceptional systems in our Purchase and Organic teams both playing a pivotal role in our Horizontal Product Growth part of the organization. If you’re passionate about crafting highimpact user experiences, optimizing conversion flows, and driving sustainable growth through datadriven experimentation, this is for you.

The Purchase Team designs and builds user activation experiences, ensuring every step in the funnel is seamless, trustworthy, and engaging. We develop powerful tools for Growth Managers to launch and optimize topclass purchase funnels, helping us convert firsttime users into loyal customers.

The Organic Team focuses on building selfsustaining growth loops that amplify Welltech’s visibility through nonpaid channels. By creating and optimizing organic entry points, we ensure our brands reach and resonate with audiences worldwide without relying solely on paid acquisition.

You’ll join crossfunctional squads where your work directly influences user acquisition, retention, and overall brand presence driving both immediate impact and longterm growth.

Key responsibilities:

Collaborate across disciplines: Work closely with crossfunctional teams including FrontendBackend Engineers, QA, Product Analysts, and Product Managers to design, develop, and deliver innovative solutions that directly influence user experience and revenue. You won’t just ship code — you’ll shape how millions interact with our products.

Engineer with purpose: Translate business requirements into performant, maintainable code that shapes user trust and monetization experience.

Own your systems: Take responsibility for system performance, scalability, and data integrity. Spot issues before they happen and suggest smart fixes. Participate in monitoring (Sentry, Datadog).

Drive product and system evolution: Take initiative in shaping the future of our user identity and privacy systems. Audit what exists, identify areas for improvement, and lead the transformation of existing flows into modern, userfirst solutions that unlock real value for both the company and our users.

Elevate the Standard: Be a champion of engineering excellence. Drive clean code practices, lead code reviews, mentor peers, and contribute to a culture of innovation. Share knowledge and bring strategic thinking into technical discussions.

Build with BestinClass Tech: Craft modern solutions using React 18+, ReactQuery, Styled Components, TypeScript 5+, and Vite. Help shape how we architect, deploy, and scale services used by a global user base.

Required skills:

Seniorlevel experience building and maintaining frontend applications in a productfirst environment
Mastery of JavaScript (ES6+) and TypeScript, with an eye for performance and maintainability
Advanced knowledge of React and its ecosystem — you’re comfortable with Redux Saga, Core Web Vitals, and beyond
A deep understanding of how the web works, including RESTful API integration, web security, and responsive UX patterns
Solid grasp of software design principles — you live by SOLID and know how to apply design patterns pragmatically
Experience implementing testing strategies
Strong communication skills and fluent English (C1) — youre confident leading discussions and documenting decisions
A passion for crafting delightful user experiences, and a mindset of continuous growth and learning