Fullstack Developer (F# / C#) - Brand Payment

Lead Fullstack Developer - Secteur Public - CDI Paris - Theodo GovTech

Theodo

L’histoire du groupe Theodo et son succès Theodo accompagne depuis 2009 les entreprises innovantes dans la conception, le développement et le déploiement de produits digitaux ingénieux - tels que la plateforme TF1+, l'application LCL Pro ou l'application France Identité Numérique - en tirant parti du meilleur de la technologie et de l’approche Lean.   Theodo connait une croissance exceptionnelle depuis 15 ans : nos équipes rassemblent plus de 700 Theodoers, principalement des Software Engineers, passionnés de technologie et d’amélioration continue. En 2025, le groupe Theodo génère 100M€ de CA.   Chez Theodo GovTech, nous accompagnons nos clients - ministères, collectivités territoriales et grands opérateurs publics - dans la conception, le développement et la maintenance de produits numériques accessibles, durables et utiles pour la société. Rejoindre notre aventure, c'est partager une ambition commune : utiliser le numérique pour augmenter l’efficacité de l'action publique et améliorer le quotidien des agents et des usagers. Pourquoi on recrute ? Nous recrutons un(e) Lead developer chez Theodo GovTech afin d’assurer la satisfaction des acteurs publics en créant des produits qui répondent aux besoins d’amélioration de la qualité du service public rendu aux citoyens, associations, entreprises.   Tes missions seront divisées en 3 parties :   - S’assurer du delivery du projet et de sa qualité Travailler sur les conceptions et les features les plus complexes, s’assurer que les conceptions soient implémentables par les équipes de dev Etre garant(e) de la qualité de l’architecture et du code produit grâce à nos méthodologies Theodo (3S) et routines (code review)   - Etre le point de contact de ton client S’assurer de la satisfaction permanente de ton client en participant aux points de routines avec ce dernier (backlog refinment, daily et cérémonie)   - Etre responsable de la réussite des Software Engineer sur le projet Former ton équipe via des routines comme les code review et le pair programming Encadrer ton équipe sur le terrain avec des 1:1 avec chaque membre de ton équipe   Tes perspectives d’évolution   3 axes d’évolutions s’offrent à toi: - Architecte senior : développer une expertise technique - Thought Leader : création de communauté Tech, être en open source dans un but de faire connaître Solona et le groupe Theodo à de potentiels futurs clients. - Intrapreneur : devenir porteur d’offre dans le groupe     Profil recherché   Hard skills - 5 à 8 ans d’expérience en Tech et 1 expérience a minima en Tech Lead d’1 an - Tu maîtrises des concept web complexes (front, back, BDD, Infra, Déploy, CI, Logs) et DevOps (Docker, Container - Kubernetes) - Tu disposes d’un intérêt pour un code de qualité - Tu sais créer une architecture simple en infrastructure - Tu as déjà accompagner et coacher des membres junior de ton équipe - Bonus : tu as une expertise sur les enjeux des projets publiques et enjeux d’accessibilité et/ou tu as une expérience dans le secteur public   Soft skills - Tu as une bonne capacité d’analyse; tu sais modéliser un problème et une solution pour être capable de résoudre des problèmes complexes - Tu sais créer du lien avec tes clients interne ou externe et les membres de ton équipe - Tu fais preuve de pédagogie; tu sais expliquer des concepts de manière accessible et compréhensible.     Déroulement des entretiens L’entretien se déroule en 5 étapes sous une dizaine de jours :   - Un call de qualification (30 min), avec Clémence, notre Head of Talent Acquisition - Un cultural fit (1h) avec Clémence - Un entretien de refacto (1 heure), avec Matthieu, notre CTO - Un entretien de modélisation (1 heure) avec Matthieu, notre CTO - Un final (30 min) avec Maxime, notre CEO

Software Engineer Fullstack - Java / React (x/f/m)

Doctolib

YOUR IMPACT Doctolib is growing, and we are hiring Fullstack Software Engineers in Paris, across various teams and seniority levels. Whether you are early in your career or a seasoned developer, there is a place for you within our Engineering teams! Your mission will be to help Doctolib reinforce its position as a leading healthcare technology platform by building high-quality products that improve the daily lives of healthcare professionals and patients. You will work in feature teams developing solutions that directly impact millions of people across Europe. Working in the tech team at Doctolib means building innovative products and features to improve the daily lives of care teams and patients.   WHAT YOU'LL BUILD Your responsibilities include but are not limited to: * Collaborate with product managers, designers, and engineers to build features that deliver value to healthcare professionals and patients * Design and implement technical solutions ensuring performance, security, and usability across our fullstack applications (React, TypeScript, JVM ecosystem) * Contribute to code quality through reviews, testing, and continuous improvement of our development practices * Share your expertise and collaborate across teams to evolve Doctolib's architecture and technical standards   LIFE AT DOCTOLIB TECH * Our solutions are built on a single fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to country and healthcare specialty requirements. * Our stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native. * We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here. Want to learn more about our tech culture and environment? Visit the Doctolib Tech site.   WHAT YOU'LL BRING Before you read on — if you don't meet the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply! * You have fullstack software engineering experience with React and the JVM ecosystem (Java, Kotlin, Spring Boot) - Ruby experience is a bonus * You have a "user first" mindset and are committed to building secure, well-tested, and pragmatic code * You bring a strong testing culture and are passionate about code quality * You are proactive, curious, and eager to share knowledge through pair programming and collaboration   WHAT WE OFFER * Free health insurance for you and your children * Parent Care Program: receive one additional month of leave on top of the legal parental leave * Free mental health and coaching services through our partner Moka.care * For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support * Work from abroad for up to 10 days per year thanks to our flexibility days policy * Work Council subsidy to refund part of sport club membership or creative class * Up to 14 days of RTT * A subsidy to refund part of the membership to a sport club or a creative class  * Lunch voucher with Swile card * Reimbursement of public transportation  * Relocation support for international mobilities * Access to the best AI tools for coding, development and dedicated training   STANDARD INTERVIEW PROCESS  * Recruiter Interview * Coding Interview * System Design Interview * Behavioral Interview * Reference check * Offer! We want your experience to be clear, respectful, and transparent. Learn more about our hiring process on our candidate experience page.   JOB DETAILS * Permanent position * Full Time * Based in Levallois-Perret * Hybrid position * Start date: As soon as possible At Doctolib, we are committed to improving access to healthcare for everyone. This translates into our recruitment process. We evaluate candidates based solely on qualifications and motivation, without any form of discrimination. The more diverse ideas are heard, the more our product will truly improve healthcare for all. You are welcome to apply to Doctolib, regardless of your gender, religion, age, sexual orientation, ethnicity, or disability. To ensure equal opportunities, we invite you to exclude personal information (e.g., pictures, age) from your applications. If you require any accommodation, please let us know for support during the hiring process. Join us in building the healthcare we all dream of!   YOUR DATA PRIVACY All information provided is processed by Doctolib for application management. For data processing details, click here: France. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.

Android Developer (Inbox)

Proton

Join Proton and build a better internet where privacy is the default Proton was founded in 2014 by scientists from CERN on a simple truth: privacy is a fundamental human right. Since then, we’ve built the world’s largest encrypted email service (Proton Mail) and expanded into Proton VPN, Proton Drive, Proton Pass, and Proton Calendar—tools used by millions globally to protect their freedom, fight censorship, and keep their data safe. In some situations, Proton has literally helped save lives. We are profitable, independent (no VC control), and selectively hire from the top ~1% of applicants. Our 500+ team members across 50+ countries come from leading organizations and elite academic backgrounds. We move fast, keep hierarchy light, and prioritize impact over optics. If you want to do meaningful work with exceptionally high-caliber people, this is it. Join us and do work you can truly be proud of. Check our open-source projects here! Role overview As a fullstack cross-platform Android Engineer, you'll play a pivotal role in developing Proton Inbox (which comprises of Mail and Calendar) using Jetpack Compose and Rust. You’ll use an end-to-end ownership approach, ensuring timely delivery of high-quality, scalable solutions that will delight our customers.  Key responsibilities * Develop and maintain cross-platform mobile applications for Android using a blend of cross-platform (Rust) and native technologies (Kotlin) * Take end-to-end ownership of mobile application development projects: you'll be comfortable with scoping projects, walking back from deadlines and being able to discern the important from the superfluous * Foster a culture of innovation by exploring new technologies, methodologies and approaches to mobile development – we tackle complex engineering challenges with creativity and ingenuity * Optimise mobile applications for performance, usability and responsiveness across different devices and screen sizes * Master memory management, multithreading and concurrency mechanisms to enhance performance and responsiveness of mobile applications * Design for scalability, considering factors such as data caching, network bandwidth and server load * Prioritise customer satisfaction by maintaining a customer-centric mindset throughout the development process, continuously seeking feedback and iterating to improve the user experience The ideal candidate will bring * Bachelor's degree in Computer Science, Engineering or related field (or equivalent work experience) * Excellent problem-solving skills and the ability to think outside the box to overcome challenges * Passion for continuous learning and driving change in the rapidly evolving field of mobile development * Excellent communication and interpersonal skills * Proven experience developing mobile applications for Android using Kotlin * Proficiency with Jetpack Compose for Android, and familiarity with Rust * Strong understanding of mobile app architecture, design patterns and best practices * Knowledge of memory management techniques and best practices * Experience with multithreading and concurrency in mobile applications * Good understanding of scalability considerations when it comes to engineering mobile applications * Previous experience working in a fast-paced, scale-up environment Even if you don’t meet all the requirements listed above but feel you could still be a great fit, please do apply. What we offer * Work that Matters: millions of people trust Proton with their privacy. We answer only to our users — not advertisers, not investors with conflicting agendas, not governments. The work you do here is real, and the impact is measurable. (read more about our impact here) * Technology: you'll get the right hardware and the right software you need to do your best work. * Learning & Development: we invest in your growth because sharp people make us better. Proton is one of the fastest ways to accelerate your career because you'll be thrown into real challenges, with real ownership, from day one. * Employee Benefits: your wellbeing isn't an afterthought. We offer strong health coverage, solid retirement options, generous leave, and wellness support so you can bring your best self to work every day * Stock Options: at Proton, we all have the opportunity to be owners of the company. From day one, you have a real stake in what we're building. When Proton wins, you win. * In-Person Collaboration: Amazing things happen when passionate, smart, and purposeful people get together in the same room. With offices across Geneva, Zürich, Barcelona, London and more, you'll spend most of your time collaborating face-to-face with people who genuinely care about what they're building * Food: Lunch and snacks are on us every day in our offices so you can focus on the work and not on what's for lunch. * Transport: getting to the office shouldn't cost you. We cover public transport, bike allowances, or parking, whichever works for you. * Flexible Working: you own your schedule. Set hours that work for you and your team — because outcomes matter more than when the clock says you started. 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 its 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 anonymise 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 CVs 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