198 Best paris Jobs in El Prat De Llobregat (July 2026)

Senior Android Engineer, Payments - Kotlin & Global Growth

4 days ago

Barcelona

ph3strongJoin Proton and build a better internet where privacy is the default /strong /h3pAt 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. /ppOur 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. /ppProton today supports 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. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. Proton has become profitable and reached scale without relying upon VC funding, largely due to superior talent that allows us to do things faster, more creatively, and more efficiently. /ppWe 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 ourstrongsocial media pages /strongto learn more about us:a Twitter /a,a Reddit /a,a Instagram /a. /ppstrongThe Payments Team /strong /ppThe goal of the Payments team is to enable revenue generation for the entire Proton ecosystem. This comes in the form of introducing new payment methods for users to architecting our client libraries. This team has impact across all of Proton's products and is critical to the success of the business as a whole. /pulliAs Proton is a global Company, the Payments Team works to continuously expand the possibilities for users to pay with various payment methods, beyond just plain credit cards or Paypal. /liliThe team works in tight collaboration with the Account Team (responsible for the Proton user lifecycle), the Proton Finance team, and every single Business Unit to ensure that plans, promotions and pricing meet user expectations. /liliThe mission of the team is to empower anyone in the world who wish to use Proton services, to become a Proton subscriber by building enticing interfaces, being able to progressively reach global markets, by providing the methods and tooling allowing users to pay, and for the Proton organization to properly being able to measure growth, and to follow the relative financial regulations. /li /ulpstrongTech Stack and Tools: /strong /pulliDifferently than many other stacks at Proton, the Payments stack depends largely on external services such as payment providers, tax-information providers, currency-conversion providers... As such it is critical, for the success of the service, to build with resilience. /liliOur mobile code is based on Kotlin (on Android) and on Swift (on iOS), with a growing shared codebase in Rust. /liliAll our client-code is open-source and GPL3. /liliWe are migrating our infrastructure to Kubernetes. /liliEverything runs on premise in Proton's data-centers. /liliTo organize our work we use classic tools such as Jira and Confluence. /li /ulpstrongFuture Plans: /strong /pullipWith payments being the backbone of any subscription business, we have ambitious plans to expand the team to cover a wide breadth of topics ranging from demystifying payment performance data across regions/products, to thinking about the holistic strategy of product catalogs, and everything in between. This particular team requires someone who is a strong generalist, who thrives with ambiguity. There's huge potential for growth no matter the domain, and the outcome for any candidate is an indepth view into how money moves globally. /p /li /ulpstrongPurpose of the role: /strong /ppYou will be the main Senior Android Engineer building our payments solution which plays a key part of the Proton product ecosystem. You must be capable of building a highly secure and reliable Android app that will be used by millions from around the world. You will have the opportunity to play Product or Project Managers roles and lead the whole development and testing process. /ppstrongJob requirements: /strong /pulliDeep experience with Kotlin /liliDeep understanding of advanced Android UI design principles, patterns, and best practices /liliDeep experience designing and integrating with RESTful API's /liliExperience with various third-party libraries and SDK's /liliExperience with secure coding practices /liliAble to operate in a fast environment with teammates in other continents /liliExcellent English communications, both written and spoken /li /ulpstrongBonus points for: /strong /pulliFamiliarity with cryptocurrencies (Bitcoin), payment systems, and blockchain technology /liliKnowledge of Rust /li /ulpEven if you don’t meet all the requirements listed above, but feel you could still be a great fit, please still apply. /ph3strongWhy Proton: /strong /h3ullistrongOffice First: /strong 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. /lilistrongTechnology: /strongWe 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. /lilistrongFood: /strongLunch and snacks are provided by Proton every day at our offices. /lilistrongTransport: /strongWe will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location. /lilistrongStock Options: /strongAt Proton, we are all owners of the company and you get stock options when you join us. /lilistrongFlexible Working: /strongYou can define your own working hours as long as it works with team meetings. /lilistrongLearning and Development: /strongWe are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning. /lilistrongEmployee Benefits: /strongComprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs. /lilistrongWork that Matters: /strongProton 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 impacta here /a. /li /ulpstrongCheck our social media to learn more about Proton: /strong /ppstronga LinkedIn /a, /strongstronga Reddit /a, /strongstronga X /a, /strongstronga YouTube /a /strong /ppstrongOur Commitment to Diversity and Inclusion /strong /ppAt 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. /ppIf you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know. /ppstrongCandidate Privacy Notice /strong /ppWhen 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 theira Service Privacy Policy. /aThis 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. /ppIf 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. /ppemProton 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. /em /ppemTo learn more about our privacy policy, please visit /ema emour privacy policy page /em /aem. /em /p /p #J-18808-Ljbffr

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