qa engineer backend

United States Digital Space LLC is seeking a Backend Software Engineer with a strong security background to join our Paris-based product development team. You will design, build, and operate backend services powering security-sensitive features for B2B and B2C users.Based in Paris with a hybrid work model, you will collaborate with Product, Design,...

Datadog, Inc. is seeking a senior backend engineer at our Paris hub to own and grow the signal processing domain. You will design, build, and operate scalable backend systems applying signal finding models for internal data science teams and external customers.You will own Kafka and Flink end to end, collaborating with data scientists to convert models into...

Crossing Hurdles is seeking a Software Engineer Backend for a remote contract role. The position involves creating realistic coding tasks for AI, building scalable services, and optimizing backend performance.You will conduct code reviews and collaborate across teams to ensure high-quality software. The ideal candidate has strong experience in Java, Node.js,...

BlaBlaCar, the world’s leading community-based travel app, is seeking a Confirmed Backend Engineer to join the Payment Squad in Paris. You will contribute to a reliable, scalable payment platform, handling the full lifecycle from integration of new methods to fraud and compliance, collaborating with frontend and product teams.You’ll work with a team of...

Are you looking to have an impact on the daily life of millions of entrepreneurs in France (and tomorrow in Europe)? Are you looking for a work environment that values trust, proactivity, and autonomy? Are our Engineering principles aligned with your vision? Then, Pennylane is the right place for you ! Our vision We aim to become the most beloved financial...

Swan, based in Paris, is seeking a Software Engineer to contribute to projects with a team of over 70 people. The role emphasizes problem-solving in a regulated environment. Candidates should have at least 3 years of experience in software development with proficiency in TypeScript.The position includes a competitive salary ranging from €53,000 to...

Pixid is looking for a Java Backend Developer to join our squad and help scale microservices in a fast-moving, agile environment. You will design, implement and operate services with Java/Spring Boot, RESTful APIs and event-driven patterns, collaborating closely with product and frontend teams.We value strong knowledge of PostgreSQL, Docker, Kubernetes, and...

Sunrise in Paris is seeking a Python Back-end Developer to scale their digital sleep clinic. In this role, you will design and improve robust back-end systems using Python and Django and be responsible for developing RESTful APIs. The ideal candidate should have over 5 years of experience in backend development, a strong understanding of software...

Resilience Care, a French company focused on remote medical monitoring and AI-enabled healthcare, is seeking a Backend & Applied AI Engineer. You will develop and maintain backend services and APIs in Python, contribute to AI-enabled features, and help improve performance and reliability.Initially ~75% backend and 25% Applied AI, with expansion possible. You...

Roundtable in Paris is seeking a Senior Full-Stack Engineer to join its high-performing team. In this role, you will build the infrastructure for private equity, ensuring precision and reliability in financial operations. You should have at least 5 years of experience with Node.js and TypeScript, and be driven by quality and excellence. The position offers a...

Septeo est unacteur de référence du software en Europe,présent à l’internationalet reconnu parmi letop 5des éditeurs de logiciels sectoriels en France. En forte croissance et en transformation permanente, le groupe s’impose comme un acteur clé de l’édition logicielle grâce à la force de son collectif : des équipes déterminées, audacieuses...

Backend Engineer - Mission Operations ServicesBuild and maintain MOS backend services to command and monitor satellitesLocation: Toulouse, OccitanieAbout The RoleBackend EngineerLoft Orbital is looking for a Backend Engineer to join our Mission Operations Services (MOS) team. MOS owns the backend services that let Loft operators and customers command,...

Size Up Consulting recherche un Développeur(se) Java Back-End Senior afin de renforcer une équipe dédiée aux flux financiers, conformité et recouvrement. Vous interviendrez sur des solutions à forte valeur ajoutée pour une clientèle internationale, dans un contexte Agile et performant.Dans ce rôle, vous serez responsable du développement des...

JD.com is seeking an experienced Java software engineer to develop backend services for Joybuy across European markets including the UK, France, Germany and the Netherlands. You will focus on performance, scalability, and integration with global infrastructure.Work with product management to deliver reliable services, improve system reliability, monitor...

Une entreprise technologique en pleine croissance recherche un Développeur Node.js à Toulouse. Vous développerez des applications backend optimisées pour le cloud et contribuerez à la stabilité des systèmes PHP. La mission inclut la conception d'APIs et la collaboration avec les équipes sur l'architecture de nouvelles fonctionnalités. Les candidats...

Shift Technology is seeking a Software / Integration Engineer (Agentic Systems) in Paris. You will join a dedicated Agentic squad, collaborating with our US-based Data Science team to productionize agentic solutions and ensure reliable integration with external services.The role focuses on building robust backend services, third-party integrations, and...

Alma recherche un ingénieur Backend expérimenté pour concevoir et déployer les APIs et les composants backend qui gèrent les paiements de milliers de commerçants et de millions de consommateurs en Europe.Le poste est en CDI, basé à Paris ou en télétravail depuis la France. Vous contribuerez à faire évoluer notre infra fintech, avec un accent sur...

Dashlane is seeking a Backend Software Engineer in Paris to design, build and operate backend services for security-sensitive features across B2B and B2C products. The role emphasizes identity, authentication, access control, threat prevention, and secure development practices in a cloud SaaS environment.The engineer will partner with Product and Security...

Proton is seeking a Backend Engineer to build and scale Proton's core services, serving over 100 million users worldwide. You will translate complex technical challenges into reliable, fast APIs and collaborate with Product, Design, APIs, and your team to deliver measurable value.You should have proven back-end development experience, SQL (MySQL), Redis,...

CEGID recrute un Développeur C++/C# .NET pour renforcer son équipe Enterprise à Boulogne-Billancourt. Vous participerez au développement et à la maintenance de solutions critiques pour la paie, la finance et la conformité, en intégrant progressivement des capacités d’IA.Vous écrirez un code robuste, améliorerez les moteurs core en C++, et...