Android Engineer - Muscle Booster

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.

What We're Looking For

We are looking for an Android Engineer who dreams of developing ambitious products that positively impact the lives of millions of users and wants to be part of a team that builds apps in the Health & Fitness space.

Key responsibilities:

• Shape and co-own the codebase as a member of a cross-functional product-engineering team.

• Drive turning user needs into solutions end-to-end, from product discovery to supporting our code running in production.

• Drive the design and development of a mobile app, and contribute significantly to the system design of the overall product.

• Be a trusted partner for product, design, data, and other functions.

• Work with and contribute to a modern technology stack: Kotlin, Kotlin Coroutines and Flow, Jetpack Compose, and other Jetpack libs (Arch components, Navigation, DataStore, Room, Hilt, etc).

• Collaborate with other Engineers to constantly push the boundary of technical excellence across Android and beyond.

• Implement cool ideas and have an impact on millions of users in a customer-centric environment with a high degree of ownership.

Required skills:

• Proven impact in building new and/or refactoring existing large-scale customer-facing products.

• Strong product & business mindset. Proven ability to drive the building of successful products, working closely with Product Managers, Designers, and Domain experts.

• Ability to choose the right tool for each challenge, learn new tools and technologies.

• Ability to manage risks, trade-offs, and propose efficient solutions.

• Strong advocate of design for testability, automated tests, shift left, and willingness to work in an environment where engineers own the quality end-to-end.

• Ability to learn fast, collaborate cross-functionally, and communicate effectively.

• Great understanding of object-oriented, functional, and declarative paradigms, design patterns, and architectures such as MVVM/MVI, DI.

• Strong experience with Jetpack Compose and composable, modular UI architectures in general.

• Strong experience with Android Jetpack (Any of: Arch components, Compose, Navigation, Room, Hilt, WorkManager).

• Experience building complex, dynamic, and interactive UIs.

• Strong ability to craft clean, maintainable code.

• Strong ability to design for reliability and scalability.

• Strong grasp of Kotlin Coroutines and Kotlin in general.

• Experience with Rest API, Retrofit.

• Experience implementing and advocating for methodologies that allow fast iterations and maximise developer productivity, such as eXtreme Programming, Trunk Based Development, CI/CD mindset, BDD, TDD.

• Strong advocate of technical patterns and solutions that optimise for the pace of experimentation (e.g. backend-driven UI architecture, modularization, high cohesion/low coupling).

• Great command of English.

Nice to have:

• Knowledge of libraries, tools, and approaches for building beautiful animations: MotionLayout, Lottie, Jetpack Compose animations, etc.

• Experience with backend development.

• Experience with data and/or multimedia.

Candidate journey: ⭕️ HR call ---> ⭕️ Live Coding ---> ⭕️ System Design ---> ⭕️ Cultual fit interview

✨ 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