Senior Product Engineer - Android/Kotlin

YAZIO

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 Your mission is to translate user needs and product vision into robust, high-quality code that powers a world-class user experience. You will own the technical execution within the squad, living best practices and helping the entire team. * 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. READY TO JOIN US? Excited to take Yazio to the next level and help people worldwide lead healthier lives? We’d love to hear from you! Please send us: * Your CV in English * A few lines (or a short video if you prefer) about who you are and why you want to work at Yazio * Any additional materials that showcase your work (e.g., LinkedIn profile, portfolio)

NavVis

OUR VISION When people use our technology to "bridge the gap" between the physical and digital worlds, they don’t just capture reality - they create a new one. In this new reality, they are smarter, more productive, more streamlined, and more creative - because they have the digital foundation to build the world they want to live in. That’s what NavVis offers in all our products and services: the tools to not just map the world as it is, but to pave the way to a better future. To forge something new. Physical or digital, there is only one reality. And it’s the reality NavVis empowers people to build better.    THE OPPORTUNITY In this role, you will join the NavVis Mobile Team and use your deep expertise in Android development to shape the future of NavVis IVION Go — our mobile app that lets users dive into rich digital data around them, wherever they go. You will leverage the powerful digital twins created with our mobile mapping devices NavVis VLX/MLX as well as our cutting-edge visual positioning technology to create spatially aware user experiences for our manufacturing clients around the world.  If you're passionate about clean code and elegant design, keeping up to date with current Android ecosystem, and love building with modern toolchains — you might be exactly who we're looking for!    HOW YOU WILL MAKE AN IMPACT * You will progressively take co-ownership of our entire Android codebase, toolchain, and development process.  * You will collaborate closely with design, product management, and of course your fellow engineers across Android/iOS inside the Mobile Team and on demand with other engineering teams in the IVION department.  * You will drive architectural decisions for the Android codebase and set the bar for code quality through knowledge sharing and code reviews.    WHAT WILL HELP YOU SUCCEED IN THE ROLE * 8+ years of Android development experience, with strong architectural decision-making skills across Kotlin Coroutines/Flow, Jetpack Compose, Jetpack libraries (Room, Lifecycle, ViewModel), Retrofit, and Koin.  * Solid computer science fundamentals — data structures, algorithms, and design patterns applied in real-world production contexts.  * Quality-driven development mindset, including TDD/BDD practices, mobile testing (JUnit, Espresso), and CI/CD pipelines (GitHub Actions, GitLab, or Jenkins).  * Full SDLC ownership — from requirements and architecture through code reviews, testing, and deployment.  * Agentic AI coding proficiency — goes beyond AI-assisted writing to shape team-wide workflows, curate context, and optimize for token efficiency.  * Experience with ARCore, game engines, or 3D rendering frameworks is a strong differentiator.    HOW WE WILL KNOW WE ARE A PERFECT MATCH Your recruiting partner for this role is Sylvie (she/her). You can expect to go through a screening call, and up to 5 rounds of interviews, where we would love to discover your passion and interests, introduce you to who we are and what drives us, and finally understand how we can potentially add value to each other's growth.   HOW WE WILL KEEP YOU SMILING * It's important to take a break from work! We offer 30 days of paid time off per year * Affordable access to a vast network of fitness and wellness facilities through EGYM Wellpass subsidy * Deutschlandticket subsidy to support sustainable travel using public transport * We offer flexible working hours and a hybrid work setup, enabling you to plan your work around your life, and not your life around work! * We offer full visa and relocation support for international candidates * An attractive bike leasing model through JobRad, in line with our commitment towards sustainable mobility * A competitive compensation package that values the skills and experience you bring * Up to 4000 EUR employee referral bonus  * Financial support for local language classes to help you in your journey of integrating into the culture!   ABOUT US   NavVis is a technologically-focused, global leader in reality capture and digital factory solutions. Prominent manufacturers and laser scanning professionals around the world trust our ground-breaking technology, designed to capture and share the built environment as photorealistic digital twins. By bridging the physical and digital worlds, we’re helping organizations make smarter decisions and build more efficient, connected operations.   With over 300 people from around 60 nationalities and offices around the globe, we’re proud to be a truly international and diverse place to work. As a scaling company, we bring together the agility, innovation, and entrepreneurial mindset of a startup with the professionalism and reliability of an established enterprise — offering our team the best of both worlds.   You’ll be part of an open culture that values trust, collaboration, and transparency. We are proud of our environment where diverse talent can thrive and where feedback fosters individual growth and development. Do you share our passion for disruptive technology and want to be part of our dynamic journey? At NavVis, you’ll own your projects, bring innovative ideas to life, and have real opportunities to grow your career and be recognized for your impact.   We derive our strength from our diversity. NavVis’ unwavering commitment to fostering an inclusive and diverse workplace has laid the foundation for our incredible growth. We thrive on the collective strength of our people who come from diverse backgrounds. We respect and value every experience associated with race, gender identity, sexual orientation, nationality, religion and disability. We do not discriminate on the basis of any of these, or other identities, and strongly encourage everyone to apply. Together with you, we build NavVis! If you need assistance at any stage of the recruiting process due to a disability, please reach out to your recruiting partner(s) for this position.

Proton

Join Proton and build a better internet where privacy is the default At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online. Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech’s invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information. In some cases, Proton’s services have even been instrumental in saving lives by enabling secure and private communications in high-risk situations. Proton is a profitable company that does not rely upon VC funding, supporting over 100 million user accounts with a growing team of over 500 people from over 50 different countries, from the world's top companies and universities. We value intelligence, learning potential, and ambition in our hiring process. Adaptability is key as we navigate uncharted territories and redefine how business is conducted online. Hiring at Proton is highly selective, with less than 1% of candidates hired. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. You will have the opportunity to work with many of the world's top minds in their fields, ranging from former international math and science olympiad winners to chess champions. We have a global mindset and big ambitions but remain a start-up at heart. We value empowerment and flexibility and keep our structure flat to keep moving fast and avoid unnecessary politics. Tired of blending into the crowd? Join us and do work you can truly be proud of. Check our open-source projects here! Purpose of the role:   Proton continues to grow rapidly as increasing numbers of people across the globe seek greater privacy controls of their information online. To accelerate our growth, we are seeking a senior leader to drive engineering for one of our many existing or upcoming Products. We are seeking a Director of Engineering to one of our existing or upcoming Products. This role involves setting and executing technical strategy, team management, and working closely with your senior product managers counterparts, to ensure high-velocity delivery of new products. As a key member of the engineering leadership team, you will shape the company’s technical strategy and contribute to Proton’s mission of creating a privacy-centric internet. Each product will have its unique challenges and areas of focus, nevertheless we require all Engineering Directors for our Products to have a demonstrated track record of building and scaling customer facing applications, in either a B2C or B2B context, for millions of users, across multiple platforms (mobile, desktop, backend systems and platforms). In addition to technical expertise, Engineering Directors as senior leaders within Proton, have excellent communication skills, a business mindset, and a strong sense of empathy for the end customers. What you will do: * Setting technical direction and vision for one of our Products * Lead technical design and platform discussions * Drive continuous improvement in our DevSecOps practices, and improve lead times and time to market while maintaining exceptional standards of product quality * Hold yourself and team accountable for timely delivery of scalable, quality-focus user experiences and features * Develop efficient processes, and motivate your team to operate with high velocity, ownership, and accountability * Lead through others, and develop the next generation of engineering leaders at Proton * Inspire, coach, and develop your teams * Optimize your organizational structure, and continuously raise the bar on hiring * Build strong relationships with senior leaders, and advance your long-term platform and engineering vision * Contribute to Proton's technology and open source communities * Foster an inclusive and diverse environment for your team to show up and give their best each day Our Tech stack: * Applied cryptography (PGP, TLS, etc.) * REST APIs * Event architectures  * HTTP networking * SQL, Redis * PHP (Symfony), Rust, Python * iOS, macOS (Swift) * Android (Kotlin, Jetpack) * Web (Typescript, React) * Desktop (C#, Swift) * Infrastructure: MySQL / Ceph We need you to have: * Experience in software engineering in progressively complex roles * Experience directly leading and managing engineers * Demonstrable experience as a manager of managers * A history of collaboration with senior leaders in engineering, product on developing technical and product strategy * Great empathy and collaboration skills, and even greater resilience * A curious, passionate, and growth-oriented mindset * Deep experience as a hands-on software engineer creating well-crafted, maintainable systems * Mobile-first background (ideally former mobile developer) * Practical experience leading DevOps and SRE initiatives and driving best practices * Experience with cryptography preferred * Bonus points for each of the following: * * Experience with performance tuning and scaling across client, backend, infrastructure * Working closely with C-level executives to align on direction, vision and execution * Having both, the experience of operating at global scale with millions of customers but also thriving in the chaotic growth phase of scaling up to reach it. What We Offer * Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office.  * Technology: We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals. * Food: Lunch and snacks are provided by Proton every day at our offices. * Transport: We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location. * Stock Options: At Proton, we are all owners of the company and you get stock options when you join us. * Flexible Working: You can define your own working hours as long as it works with team meetings. * Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning. * Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs. * Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do. Read more about our impact here. Our Commitment to Diversity and Inclusion At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected. If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know. Candidate Privacy Notice When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills. If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at careers@proton.ch. Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton. To learn more about our privacy policy, please visit our privacy policy page. #LI-ONSITE