Senior Android Engineer

Stark Future SL; Barcelona; Presencial; EUR 70.000 - 110.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Competitive salary

On-site in Barcelona

In-house restaurant lunch

Free gym access

30 days vacation

Direct access to riders and product

Descripción de la vacante

Stark Future SL, based in Barcelona, is seeking an experienced Android Architect to lead architecture and deliver high-performance mobile experiences for premium motorcycles' Android display.

You will own end-to-end mobile features, collaborate with cross-functional teams, and drive best practices in architecture, testing, and CI/CD. Join a fast-growing, international team shaping the future of connected bikes.

Formación

• 5+ years leading Android application development and shipping production apps at scale.
• Strong command of Kotlin, Jetpack Compose, and modern Android development practices.
• Experience with MVVM, MVI, Clean Architecture and evolving patterns pragmatically.
• Solid understanding of concurrency, coroutines, flows, and performance optimization.
• Experience diagnosing and resolving complex performance, memory, and stability issues.
• Broad knowledge of Android SDK, Jetpack libraries, and third-party APIs.
• Strong testing mindset: unit, integration, and UI testing.
• Data-driven product development: A/B testing and feature flags.

Responsabilidades

• Own the architecture and technical direction of the Android app, balancing quality, performance, and speed.
• Drive end-to-end ownership of mobile features from definition through release and monitoring.
• Diagnose and resolve performance, memory, and stability issues with strong multithreading knowledge.
• Collaborate with product managers, designers, and stakeholders to deliver user-centric experiences.
• Promote continuous improvement, lead by example, and push for better solutions.

Conocimientos

Android Architecture (MVVM/MVI/Clean)

Kotlin

Jetpack Compose

Performance optimization

Multithreading & concurrency

English proficiency

CI/CD tooling

Herramientas

CI/CD tooling

Descripción del empleo

Stark builds the world’s most powerful electric motorcycles. From the VARG MX to the road-legal VARG EX & SM, our bikes have won world championships and are engineered to outperform anything with a combustion engine.

We’re based in Sant Boi, Barcelona, growing fast (77% year-on-year), and building a team that will take us even further. If you want to work on a product that people are genuinely obsessed with, this is it.

Stark will become the global market leader in premium motorcycles. Building premium motorcycles requires innovation and we need your help to make us succeed

Our mission is to lead the way towards a sustainable motorcycle industry, by reducing plastic and CO2 pollution.

This will be achieved by building sustainable products that are superior to traditional technology in terms of Performance, Emotion and Design.

The Role

Stark shall become the global market leader in premium motorcycles. Building premium motorcycles requires innovation and we need your help to make us succeed in building the first vehicle smart display that runs on an Android phone that can be used to adjust several settings of the bike such as the engine power.

We want to provide our customers with an incredible user experience while connecting to the bike, adjusting the vehicle settings, or buying other products with the display.

This is one of Stark’s most ambitious projects and one crucial step towards being a game-changer in the industry.

What You’ll Do

• Own the architecture and technical direction of the Android application, making pragmatic decisions that balance quality, performance, and speed
• Take end-to-end ownership of mobile features: from definition and design through development, release, and monitoring
• Diagnose and resolve complex performance, memory, and stability issues, with a deep understanding of multithreading, concurrency, and data caching
• Collaborate with product managers, designers, and business stakeholders to turn requirements into polished, user-centric experiences
• Foster a culture of continuous improvement — challenge what could be better, share mistakes openly, and lead by example

Duties

• Be a core member of a high-performance, multidisciplinary team, contributing expertise openly in technical and product discussions
• Set and uphold standards for clean, stable, and extensible code across the mobile team
• Drive best practices in architecture, testing, CI/CD, and tooling
• Leverage AI tools as a standard part of your development workflow to ship faster and with higher quality
• Partner with other engineering teams to co-design features across the stack
• Stay current with mobile industry trends and proactively propose product improvements
• Use data to drive decisions — A/B testing, feature flags, and experimentation frameworks to measure and validate impact
• Be a role model to team members
• Keep your backlog up to date and communicate frequently with engineers, product managers, and the creative team

What you will bring to Stark

• 5+ years of experience leading Android application development, with a track record of shipping production apps at scale
• Deep proficiency in Kotlin, Jetpack Compose, and modern Android development practices
• Strong command of Android architecture patterns (MVVM, MVI, Clean Architecture) and the ability to evolve them pragmatically
• Solid understanding of concurrency, coroutines, flows, and performance optimisation
• Experience diagnosing and resolving complex performance, memory, and stability issues
• Broad knowledge of the Android SDK, including best practices, Jetpack libraries, and key third-party APIs
• Strong testing mindset — unit, integration, and UI testing as part of normal development
• Data-driven approach to product development: A/B testing, feature flags, and experimentation frameworks
• Ability to manage and prioritise multiple workstreams simultaneously
• Proficient in English, written and spoken

Nice to have

• Experience with Kotlin Multiplatform
• Experience with Bluetooth
• Experience in improving Developer experience (CI/CD, Git strategies…)

Why work with us?

• The chance to work on a product people are genuinely passionate about
• A fast-growing company with real momentum
• A creative, international team based in Barcelona
• Competitive salary and benefits package
• Direct access to riders, race teams, and the product — this is not a remote-from-the-product role
• Subsidised lunch in our in house restaurant
• Free access to our in-house gym (including weekends!)
• 30 days of paid vacation

At Stark, we don’t just accept difference—we celebrate it, we support it, and we thrive on it for the benefit of our employees, our products, and our community.

We are committed to creating an inclusive environment where everyone, regardless of gender identity, sexual orientation, race, religion, age, neurodiversity, or disability, feels a true sense of belonging. We believe that diverse teams make better decisions and that a culture of equity is a prerequisite for innovation.

Accessibility: If you require any reasonable adjustments during the application or interview process (such as assistive technology, extra time, or a specific format), please let us know at [e-mail]. We are here to support you.

We encourage applications from underrepresented groups and are excited to see how your unique perspective can help us grow