Senior Mobile Engineer (KMP)

Yazio; Guillena; Remote; EUR 85,000 - 110,000; Full time

Benefits offered by this job

Remote-first setup

30 vacation days

5 sick days for child

MacBook provided

€1,000 yearly learning budget

Company retreat

Job summary

Yazio seeks a Senior Mobile Engineer to drive features end-to-end for our wellness app, leveraging Kotlin Multiplatform to support both Android and iOS platforms. You’ll partner with product, engineering, and design to shape roadmaps and deliver high-impact experiences across a globally used product.

Ideal candidates bring deep mobile expertise, strong product intuition, and the ability to mentor peers while maintaining code quality and performance.

Qualifications

• Seasoned mobile developer with a passion for user impact.
• Strong architecture and testing mindset for mobile apps.
• Comfortable with product metrics and delivering value.

Responsibilities

• Own Features End-to-End from design to production release.
• Collaborate with Product and Design to shape roadmap.
• Champion technical excellence and manage debt and performance.
• Mentor engineers and raise team capabilities.

Skills

Kotlin Multiplatform

Android (Kotlin, Jetpack Compose)

iOS (Swift, SwiftUI)

KMP experience

Product mindset

Mentoring

Code quality & testing

Excellent communicator

Tools

Ktor

SQLDelight

Coroutines

Job description

HEY THERE

At Yazio, our product squads are the engines that drive our mission: helping people lead healthier lives. We're looking for a product-minded Senior Mobile Engineer to join one of our core squads and build the features that empower millions of users on their wellness journey.

As a key member of a cross-functional team, you'll partner closely with your Product Manager, Engineering Manager and Designer. You will be a vital voice in shaping our product, leveraging our Kotlin Multiplatform (KMP) stack to deliver elegant, high-impact solutions for both iOS and Android users.

This role is 100% remote and open to candidates based in Germany, Spain, Portugal or the U.K.

YOUR MISSION

• Own Features End-to-End. You will take ideas from a technical design to a polished, deployed feature. You'll be responsible for writing clean, maintainable code, ensuring high test coverage and monitoring the impact of your work in production.
• Partner with Product and Design. You won't just be handed tickets. You'll be a key contributor to the 'why,' providing technical insights, weighing trade-offs and helping to shape a roadmap that is both ambitious and achievable.
• Champion Technical Excellence. You will be a steward of our codebase, helping to manage technical debt, improve performance and drive the adoption of modern practices within our Kotlin Multiplatform architecture.
• Elevate the Team Around You. You'll act as a mentor for other engineers, leading by example with thoughtful code reviews, improving team processes and sharing your knowledge to help everyone grow.

YOUR PROFILE

We're looking for a seasoned engineer who is passionate about the craft but even more passionate about the impact their code has on users.

• Deep Expertise in Modern Mobile Development. You have significant experience building native mobile apps on Android (Kotlin, Jetpack Compose). Experience with iOS development (Swift, SwiftUI) is a plus, along with a willingness to expand ownership across both ecosystems. KMP experience is a big plus.
• A True Product Engineer. You are obsessed with the user experience and the 'why' behind what you're building. You're comfortable with product metrics and are driven to see your work make a measurable impact.
• Pragmatic and Results-Oriented. You have high standards for code quality but also know when to make pragmatic trade-offs to ship value to users. You see technical debt as a portfolio to be managed, not a moral failing.
• A Collaborative Force Multiplier. You thrive in a team environment. You give and receive feedback graciously and believe that mentoring others and improving shared tools are essential parts of your role.
• Excellent Communicator. You can clearly articulate complex technical ideas to both technical and non-technical partners, ensuring everyone is aligned.
• Experience with Kotlin Multiplatform is a massive plus, but a strong foundation in native development and a passion for learning are most important.

OUR CORE TECH STACK

We believe in Kotlin Multiplatform and use it heavily in our modularized monorepo. We share as much code as possible outside of the UI layer, while building the fully native UI using Compose on Android and SwiftUI on iOS.

• We use libraries like:
• kotlinx.coroutines
• kotlinx.serialization
• Ktor
• SQLDelight
• Metro for dependency injection.

WHY US?

• An exciting product with millions of users in over 150 countries, driven by our mission to transform the world through healthy eating
• A remote-first setup: work 100% from home, join a co-working space, or work abroad for several weeks per year
• 30 vacation days to relax and recharge, plus 5 child sick days if your little one needs you
• A focus-driven culture that values efficiency over long hours - no overtime expectations, and if it happens, you get that time back!
• A high-impact environment where your work drives real change - short decision-making processes and no micromanagement
• A team culture where ambition and balance go hand in hand, supported by strong connections - from our fully covered company retreat to team meetups and virtual coffee breaks
• Tools and support to do your best work: MacBook, monitor, and €1,000 annual learning budget, plus regular feedback and career development
• A truly international team with English as our company language and a shared commitment to growth and well-being - supported by Sunday Supplements and Nilo Health

DIVERSITY AND INCLUSION

At Yazio, we believe that diversity fuels innovation. We are committed to fostering an inclusive environment where everyone, regardless of gender identity, race, religion, age, sexual orientation, or ability, feels valued and empowered. We celebrate different perspectives and actively encourage individuals from all backgrounds to apply.