Senior Mobile Developer

About Stark

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 in building the backend for our AI systems

.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 Ro

le
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 pow

er.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 displ

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

ry.
What You’l

• l Do
  Own the architecture and technical direction of the Android application, making pragmatic decisions that balance quality, performance, and
• speedTake end-to-end ownership of mobile features: from definition and design through development, release, and monit
• oringDiagnose and resolve complex performance, memory, and stability issues, with a deep understanding of multithreading, concurrency, and data ca
• chingCollaborate with product managers, designers, and business stakeholders to turn requirements into polished, user-centric experi
• encesFoster a culture of continuous improvement — challenge what could be better, share mistakes openly, and lead by ex

ample

• Duties
  Be a core member of a high-performance, multidisciplinary team, contributing expertise openly in technical and product disc
• ussionsSet and uphold standards for clean, stable, and extensible code across the mobi
• le teamDrive best practices in architecture, testing, CI/CD, and
• toolingLeverage AI tools as a standard part of your development workflow to ship faster and with higher
• qualityPartner with other engineering teams to co-design features across th
• e stackStay current with mobile industry trends and proactively propose product impro
• vementsUse data to drive decisions — A/B testing, feature flags, and experimentation frameworks to measure and validate
• impactBe a role model to team
• membersKeep your backlog up to date and communicate frequently with engineers, product managers, and the creati

ve team
What you will bring

• to Stark
  5+ years of experience leading Android application development, with a track record of shipping production apps
• at scaleDeep proficiency in Kotlin, Jetpack Compose, and modern Android development
• practicesStrong command of Android architecture patterns (MVVM, MVI, Clean Architecture) and the ability to evolve them prag
• maticallySolid understanding of concurrency, coroutines, flows, and performance opt
• imisationExperience diagnosing and resolving complex performance, memory, and stabili
• ty issuesBroad knowledge of the Android SDK, including best practices, Jetpack libraries, and key third-p
• arty APIsStrong testing mindset — unit, integration, and UI testing as part of normal de
• velopmentData-driven approach to product development: A/B testing, feature flags, and experimentation f
• rameworksAbility to manage and prioritise multiple workstreams simul
• taneouslyProficient in English, written a

nd spoken
Ni

• ce to have
  Experience with Kotlin Mu
• ltiplatformExperience wit
• h BluetoothExperience in improving Developer experience (CI/CD, Git s

trategies…)
Why w

• ork with us?
  The chance to work on a product people are genuinely pas
• sionate aboutA fast-growing company with
• real momentumA creative, international team based
• in BarcelonaCompetitive salary and ben
• efits packageDirect access to riders, race teams, and the product — this is not a remote-from-the
• -product roleSubsidized lunch in our in hou
• se restaurantFree access to our in-house gym (includi
• ng 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 [email protected]. We are here

to support you.We encourage applications from underrepresented groups and are excited to see how your unique perspective