Senior Frontend Engineer

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Welltech

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Wellness • B2C • SaaS

Welltech is a data-driven company specializing in health and wellness applications. With over 200 million installs, Welltech focuses on developing products geared towards fitness, weight loss, and healthy living, such as the popular apps Muscle Booster and Yoga-Go. The company's offerings are designed to improve the health of millions of people globally and include fitness guides, diet plans, and yoga routines. Welltech emphasizes constant growth and learning, supported by a team of over 700 professionals who work to create reliable, expert-endorsed content. Their products aim to offer comprehensive solutions for fitness and weight management, with a solid foundation in data and analytics.

201 - 500 employees

Founded 2017

🧘 Wellness

👥 B2C

☁️ SaaS

💰 Series A on 2017-12

📋 Description

• Collaborate across disciplines: Work closely with cross-functional teams including Frontend/Backend 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, user-first 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 Best-in-Class Tech: Craft modern solutions using React 18+, React-Query, Styled Components, TypeScript 5+, and Vite. Help shape how we architect, deploy, and scale services used by a global user base.

🎯 Requirements

• Senior-level experience building and maintaining frontend applications in a product-first 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) — you're confident leading discussions and documenting decisions • A passion for crafting delightful user experiences, and a mindset of continuous growth and learning

🏖️ Benefits

• full relocation support for this role • assistance with everything from visa and paperwork to finding accommodation and settling in