Java Developer - Back-end or Full-stack (H/F)

Your Responsibilities 🎯:As a Java JEE Developer / Software Engineer (H/F), you will collaborate with an agile team to drive back-end or full-stack development for one of our esteemed clients, focusing on:Analyzing architecture to ensure improvements meet expectations.Developing analytical tools for delivered components.Creating new features on a new platfor…

Accor Corporate is looking for a Senior Java Backend Developer based in Paris. This role centers on designing, building, and maintaining backend systems that support the company’s core services. Main responsibilities Create and maintain backend components using Java Contribute to the stability and performance of systems that power Accor’s platforms Support ongoing improvements to user experience by ensuring backend reliability Key requirements Strong experience working with Java in backend development Ability to design and maintain scalable backend systems Comfort working in a collaborative environment to support business services This position offers the chance to influence how users interact with Accor’s digital services by improving the systems behind them.

Join our innovative team at myjobcompany1 as a Front End Developer (H/F) where your skills will contribute to building dynamic and responsive web applications. We are looking for a passionate individual who thrives in a fast-paced environment and is eager to embrace new challenges.

We are seeking a talented and driven Java / J2EE Developer to join our dynamic team in Paris. In this role, you will have the opportunity to work on cutting-edge projects, utilizing your skills in Java development to create robust and scalable applications. If you are passionate about technology and eager to contribute to innovative solutions, we want to hear from you!

UpSlide is the leading productivity and branding solution for financial services. Our innovative software significantly enhances the functionalities of PowerPoint, Word, Excel, and Power BI, enabling users from prestigious firms such as Citi, KPMG, and BNP Paribas to focus on high-value tasks rather than formatting or manual data entry. With over 160 employees, we are in a growth phase, with offices located in Paris (headquarters), London, New York, Singapore, and Berlin.Our Core Values Our values guide our approach to work and are central to our recruitment process. We seek individuals who resonate with the following principles:Excellence: Every detail matters, and we prioritize the quality of our deliverables.Trust: We are passionate, committed, and empowered to act autonomously.Well-being at Work: We maintain a positive outlook and share our enthusiasm with colleagues and clients alike.The Team ‍‍You will join the UpSlide development team, currently composed of 26 developers organized into 5 squads. Our missions for 2026 include:OfficeJS: Preparing UpSlide for the transition from Microsoft Office to Office JS.FA: Enhancing our product's superiority in the Financial Advisory sector.FA & AI: Strengthening our product's edge in Financial Advisory by focusing on AI-related solutions.IB & AM: Continuously improving our offerings for Investment Banking & Asset Management.Platform: Upgrading our infrastructure to support tenfold user growth.Join Us!

nexton is hiring a Back End Developer to join the team in Paris. This role centers on building and maintaining server-side services using Java, NodeJS, Kotlin, and AWS. What you will do Design, develop, and maintain back-end services for nexton applications Collaborate with colleagues across teams to deliver software solutions Support and enhance nexton's products through project contributions Key technologies Java NodeJS Kotlin AWS Location This position is based in Paris.

Main ResponsibilitiesDesign, develop, and maintain backend applications using Java (Spring Boot).Define, implement, and optimize event flows on Apache Kafka (topics, partitions, performance, security).Participate in software architecture decisions and the industrialization of real-time solutions.Ensure code quality through unit tests, continuous integration, and code reviews.Contribute to the deployment and monitoring of applications (CI/CD, monitoring, support).Collaborate closely with Product, Data, and Infrastructure teams.Provide insightful suggestions for improving technical and methodological best practices.

We are seeking a highly skilled Senior Front End Developer (h/f) to join our innovative team at myjobcompany1 in Paris. In this role, you will work on exciting projects, utilizing your expertise in modern front-end technologies to create engaging and user-friendly web applications.Your responsibilities will include collaborating with designers and backend developers, ensuring the technical feasibility of UI/UX designs, and optimizing applications for maximum speed and scalability. You will also have the opportunity to mentor junior developers and contribute to the overall growth of the team.

Senior React Front-End Developer (All Genders) Why choose Valtech? We are the innovation leader in experience, a trusted partner to the world's most recognized brands. For our team members, we provide opportunities for growth, a culture grounded in values, international career prospects, and the chance to shape the future of customer experience. Opportunity At Valtech, you will find an environment conducive to continuous learning, tangible impact, and professional growth. Whether you're developing new digital solutions, challenging conventional wisdom, or crafting the next generation of customer experiences, your contributions will help transform industries. We take pride in: Our work and the innovation we foster Our values: 'Share, Dare, Care' A corporate culture that promotes creativity, diversity, and autonomy Our borderless global structure that facilitates seamless collaboration Role As a Senior React Front-End Developer (All Genders), you are passionate about innovation in experience and constantly seek to push the boundaries of what is possible. You bring 8 to 12 years of experience, a strong commitment to personal development, and a desire to make a lasting impact. You will join a multicultural, international, and multidisciplinary team dedicated to advancing the frontiers of technology and design.

Nous recherchons un Infirmier en santé au travail (F/H) passionné par le bien-être des employés et la prévention des risques professionnels. Dans ce rôle, vous serez responsable d'assurer une bonne santé physique et mentale au travail, en fournissant des conseils, des évaluations et des interventions appropriées.Vous travaillerez en étroite collaboration avec les équipes RH pour développer et mettre en œuvre des programmes de santé au travail, tout en participant à des initiatives de sensibilisation et de formation. Ce poste est idéal pour un professionnel soucieux d'améliorer la qualité de vie au travail et de promouvoir un environnement de travail sain.

Role Overview Accor S.A. is hiring a Senior Java Backend Developer for its Paris office. This position focuses on building and maintaining backend systems that support hospitality services worldwide. What You Will Do Design, implement, and maintain backend solutions using Java. Work closely with team members to deliver systems that improve both internal operations and guest experiences. Contribute technical expertise to projects that drive service quality and efficiency. Impact Your work will shape the reliability and performance of core systems at Accor, directly supporting the way guests experience our services.

Are you tired of managing legacy code? Do you dream of starting from a clean slate on a European scale? We are currently supporting a major B2C player in the complete overhaul of its European IT system. The challenge?Build an ecosystem of application 'satellites' for France.100% GreenfieldNo technical debt at the start We are looking for Java engineers passionate about Software Craftsmanship to strengthen an elite tech team. Your RoleYou will work at the heart of the backend on a modern, distributed, event-driven architecture. Your Missions: Design and develop microservices using Java / Spring Boot Participate in building an event-driven architecture Contribute to technical choices and best practices (clean code, TDD…) Work closely with DevOps and product teams Be an advocate for a culture of 'You build it, you run it'

About Air Apps Air Apps is a family-founded company focused on developing the world's first AI-powered Personal & Entrepreneurial Resource Planner (PRP). Since our start in 2018 in Lisbon, we have grown to operate in both Lisbon and San Francisco. Our apps have reached over 100 million downloads worldwide, all while remaining self-funded. We challenge standard approaches and aim to build AI-driven solutions that make a difference for people everywhere. Creativity and long-term thinking guide our work as we build products that empower individuals globally. React Engineer , Paris (On-site) We are building our talent pool for a future opening for a React Engineer in Paris. This role focuses on creating responsive, accessible user interfaces for our web applications. The position is fully onsite at our Paris office, where close collaboration with designers, product managers, and backend engineers is part of daily work. We are open to supporting relocation for the right candidate. What You Will Do Build and maintain user interfaces using React for our web products Translate wireframes and prototypes into stable, scalable front-end experiences Work closely with cross-functional teams to deliver seamless user experiences Next Steps This listing is to connect with talented engineers as we prepare to post the official position. We will reach out once the job is formally open.

Join Dailymotion as a Fullstack Developer specializing in Python and React, contributing to our innovative B2C applications. You will be responsible for developing and maintaining high-quality web applications that enhance user experiences and drive engagement. This role offers the flexibility of working fully remotely from anywhere in France.

Located in the vibrant heart of Paris, Winamax is at the forefront of the online gaming industry. As a leader in poker and sports betting in France, we boast a community of 350,000 players and 600,000 monthly bettors. Our presence extends to Spain, Germany, and soon to Italy and Portugal. We are dedicated to providing our players with an exceptional experience that is technical, creative, and high-quality. Our core values of innovation, unity, and belonging foster a unique multicultural corporate culture.Imagine building your future in gaming!Technically, Winamax is:• A powerful and innovative gaming engine: dynamic adaptation of game offerings, highly configurable poker games, fraud detection.• A distributed and scalable architecture designed to handle real-time platform streams.• A modular platform that meets high availability and data security requirements, capable of managing significant traffic.ABOUT THE ROLEAs a member of our Tech team, you will play an active role in the development of the next generation of Winamax applications (desktop and mobile) and enhancing our cross-platform engine.This position is part of the Casino team responsible for developing Casino game clients (iOS, Android, Windows, Mac, Linux, Web).As a Senior Full-Stack Developer, you will be instrumental in designing, developing, and deploying our applications. Your responsibilities will include:• Developing innovative and scalable features for both front-end and back-end.• Producing robust code for real-time gambling applications.• Managing end-to-end processes: specifications, development, testing, and deployment.• Continuously improving software architecture and development best practices.

Who are we?At MARGO, our consultants engage in what truly matters: complex projects that combine intellectual challenges with tangible business impacts. We support leading players in finance, industry, and technology in designing and developing high-performance software solutions, including distributed architectures, cloud platforms, real-time systems, and large-scale critical applications.Why join the Software Engineering practice?You will be part of a team led by Paul Blois, our Practice Manager for the past 5 years. Working alongside them means gaining deep insights into the company, receiving close guidance in your career development, and contributing to demanding IT projects that have a significant impact for our clients.Your responsibilities- Design, develop, and optimize a Front Office risk management application covering various financial products.- Enhance and extend existing functionalities to meet real-time business requirements.- Tackle complex performance, algorithmic, and multithreading challenges.- Participate in the design of scalable and robust microservices architectures.- Ensure code quality, maintainability, and security across the solution.- Contribute to code reviews, continuous improvement, and sharing best practices.Languages: Java 17Associated Technologies: NoSQL, microservices, CI/CDChallenges: real-time, low latency, algorithmic complexity, distributed computing, processing large data volumes.Desired ProfileWe are looking for a Java Developer who is passionate about real-time systems and has an interest in financial markets, eager to thrive in complex, high-performance environments.- Master's degree (engineering school or university).- Strong skills in Java, multithreading, performance optimization, and development best practices (SOLID, unit tests).- Experience in developing critical systems, real-time data stream processing; finance experience is a plus.- Ability to solve complex technical problems and collaborate with multidisciplinary teams.

Rejoignez notre Pôle Transformation Numérique en tant que Développeur Fullstack, où vous ferez partie d'une équipe dynamique d'experts en développement de solutions logicielles, dédiée à l'accompagnement de nos clients.Vous serez intégré(e) au sein d'une équipe dédiée chez un leader du secteur de l'assurance, travaillant en mode squad avec des développeurs, testeurs et un Product Owner.Vos responsabilités incluront :Concevoir, développer et maintenir des applications web performantes et évolutives.Créer des APIs REST sécurisées en .NET/C#.Développer des interfaces utilisateurs modernes et intuitives utilisant ReactJS / TypeScript.Collaborer étroitement avec l’équipe produit et les designers pour transformer les exigences en solutions techniques.Assurer la qualité du code à travers des tests unitaires, des revues de code et des pratiques CI/CD.Participer aux choix techniques et à l’architecture du logiciel.Contribuer à l’amélioration continue et au partage de connaissances au sein de l’équipe.

Role Overview Nexton is hiring a Java Angular Developer (Mid-Senior Level) for its Paris office. The company works across the Telco, Media, and Transport sectors, building software that supports business goals and improves user experiences. What You Will Do Develop and maintain applications using Java and Angular Work closely with colleagues from different teams to deliver reliable software solutions Contribute technical expertise to projects that matter to the business Location This role is based in Paris.

Your Impact Join Doctolib, a rapidly expanding healthcare technology platform, as we seek talented Frontend Software Engineers in Paris. We welcome developers at all stages of their careers, from newcomers to seasoned professionals, to join our innovative Engineering teams! As a Frontend Software Engineer, your role will be crucial in enhancing Doctolib's mission to provide high-quality products that benefit both patients and healthcare professionals. Your contributions will help solidify our position as a leader in the healthcare technology sector. Your key responsibilities will include: Collaborating with product managers, designers, and fellow engineers to develop features that provide real value to our users. Designing, developing, and maintaining React and TypeScript components while adhering to performance, accessibility, and scalability standards. Enhancing code quality through thorough testing, meticulous documentation, and constructive code reviews. Sharing your expertise and working collaboratively across teams to continuously advance Doctolib's frontend architecture. Life at Doctolib Tech Our solutions are built on a fully cloud-native platform that caters to both web and mobile applications, supports multiple languages, and is tailored to various healthcare specialties. Our technology stack includes Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native. We ethically leverage AI across our products to empower patients and health professionals. Learn more about our AI vision here. Curious about our tech culture and working environment? Visit the Doctolib Tech site.

Role Overview Sopra Steria is hiring an Expert Java Developer to join the financial services team in Paris. This position focuses on designing and building software that addresses the complex requirements of clients in the financial sector. What You Will Do Lead major software projects using Java technologies Work closely with colleagues from different disciplines Develop solutions tailored to financial services clients About the Team Based in Paris, the team values collaboration and technical excellence. The work environment encourages sharing ideas and solving challenging problems together.