Android Engineer (Platform)

Welltech; Barcelona; Presencial; EUR 60.000 - 80.000; Jornada completa

Descripción de la vacante

A leading health and fitness technology company based in Barcelona is looking for a mobile platform architect to build and evolve scalable infrastructure. The ideal candidate has solid Android development experience with Kotlin and is passionate about improving developer experience. This role will center on crafting high-quality, maintainable code that directly impacts millions of users. Join a culture focused on personal and professional growth while contributing to innovative health solutions.

Servicios

Growth opportunities

Leadership empowerment

Results-driven culture

Formación

• Solid Android development experience with Kotlin.
• Experience with Jetpack Compose and scalable UI architectures.
• Excellent understanding of architectural patterns.

Responsabilidades

• Help build and evolve scalable mobile infrastructure.
• Work closely with product teams to support platform solutions.
• Write clean, testable, and performant code.

Conocimientos

Android development experience with Kotlin

Experience with Jetpack Compose

Understanding of architectural patterns (MVVM, MVI, DI)

Clean and maintainable code crafting

Design for reliability and scalability

Knowledge of CI/CD tools

Advocate for automated testing

Passion for developer experience

Product-minded approach

Herramientas

Bitrise

Fastlane

Gradle

Descripción del empleo

🚀 Who Are We?

Welcome to Welltech—where health meets innovation! 🌍 As a global leader in Health & Fitness industry, we’ve crossed over 300 million installs with five life‑changing apps, all designed to boost well‑being for millions. Our mission? To transform lives through intuitive nutrition trackers, powerful fitness solutions, and personalized wellness journeys—all powered by a diverse team of over 750 passionate professionals with 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

This is a unique opportunity to build a platform from scratch, setting company‑wide standards and driving the direction of our mobile technology. In the Mobile App Platform team, you will architect our next‑gen mobile platform, directly shaping how millions experience wellness. You will design and implement core platform solutions, empowering product teams to rapidly build and customize applications. You will also own the mobile infrastructure blueprint, enabling teams to focus on features and experiments, free from underlying infrastructure concerns. This role demands a strong problem‑solver who thrives on building, as you’ll define a platform that scales to millions, creating a lasting legacy in mobile wellness.

Key responsibilities:

• Help build and evolve scalable mobile infrastructure, tooling, and shared components to support multiple Welltech mobile apps

• Contribute to libraries, SDKs, and CI/CD pipelines that improve developer experience and apps quality

• Work closely with product teams to support the adoption of platform solutions

• Write clean, testable, and performant code with an eye on maintainability

• Support modularization, reusability, and standardization efforts across mobile apps

• Identify common problems across apps and solve them in a consistent, scalable way

• Participate in code reviews, documentation, and knowledge sharing within the team

• Collaborate cross‑functionally with backend, frontend, security, and infrastructure teams to enable seamless integration and platform alignment

Required skills:

• Solid Android development experience with Kotlin, including fundamentals like coroutines, networking, persistence, and performance optimization

• Experience with Jetpack Compose and modular, scalable UI architectures

• Excellent understanding of architectural patterns (MVVM, MVI, DI) and modular codebases

• Proven ability to craft clean, maintainable, and scalable code

• Strong ability to design for reliability, scalability, and performance

• Experience working with CI/CD pipelines and tooling (e.g., Bitrise, Fastlane, Gradle, custom scripts)

• Strong advocate of design for testability, automated testing, and shift‑left quality mindset

• Passion for improving developer experience and shipping high‑quality code

• Product‑minded approach with a bias for pragmatic, maintainable solutions

Nice to have:

• Experience with backend development

• Experience with backend‑driven UI

• Hands‑on experience with OWASP mobile security best practices

• Track record of building internal tools, shared components, or platform features at scale

• Experience implementing and advocating for methodologies that support fast iteration and high dev productivity (e.g. eXtreme Programming, Trunk Based Development, CI/CD mindset, BDD, TDD)

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