Fullstack Developer (F/H)

Are you a vibe coder with a passion for development, and do you believe AI will redefine your profession?Welcome to SFEIR. What We Are Looking ForYou are unafraid to:- Design large-scale distributed systems using Python,- Lead the overhaul of complex Cloud infrastructures,- Build robust and efficient data pipelines,- Mentor junior developers and share your expertise,- Migrate technologies (Flask → FastAPI, protobuf → Pydantic) without disrupting production,- Propose architectural improvements through Proof of Concepts,You aim to be the technical reference that drives projects forward, not just a task executor. Projects You Could Enjoy- Develop scheduling products around BigQuery and Dataflow,- Create complex REST APIs using FastAPI in distributed architectures,- Automate content translation with Google Cloud Generative AI,- Build Jupyter Notebooks for data ingestion and processing,- Establish documentation bases and ensure team onboarding,- Validate ML results with the Natural Language API and generate reports.In short, Python on impactful projects that matter to the business. Why Join Us?Ready to elevate your expertise? At SFEIR, you don’t have to choose between technical excellence and a collaborative environment; both coexist here.You will join a community of experts where your skills define your trajectory, not your position. This is what we call a “Skill-Based Organization.”

Join Scalian, a leading player in consulting and engineering, as a Backend Python Developer! In this exciting full-time role located in Lille, you will be responsible for designing, developing, and maintaining robust backend systems to support our innovative software solutions.

Intégré(e) au sein du pôle Technology Office, vous aurez l'opportunité de travailler dans un environnement Agile où vous mettrez à profit votre expertise en tant que développeur backend Python / Django. Missions Principales :Conception et développement des fonctionnalités innovantes de notre plateforme de services.Maintenance de niveau 3 des fonctionnalités que vous avez développées.Participation active aux évolutions de nos frameworks techniques.Proposition d'améliorations pour nos processus et outils d'intégration continue. Projets Passionnants :Notre environnement technologique comprend Linux, BSD, Docker, Kubernetes, Elasticsearch, MongoDB, ainsi que divers frameworks d'intelligence artificielle et outils de Threat Intelligence. Nous sommes de fervents supporters de l'Open Source et contribuons activement à la communauté du logiciel libre.

Are you a passionate coder with an innate talent for developing with Claude Code at your fingertips? Do you excel at prompting faster than your shadow and believe that AI will redefine development?Welcome to SFEIR! What We Are Looking ForYou are not afraid to:- Communicate with LLMs as if they were your colleagues,- Juggle with Python, FastAPI, LangChain, or LiteLLM to integrate AI models,- Think in terms of architecture, orchestration, RAG, diffusion, FinOps, and everything in between,- Experiment, document, and share your knowledge.You want to understand how things work, not just consume them. Projects You Could Work On- Build unified GenAI APIs (text, image, video, RAG) on Google Cloud,- Create specialized chatbots capable of delivering 100% personalized recommendations,- Integrate GenAI platforms into our clients' ecosystems and tailor them to their specific contexts,- Design digital twins to model real-world scenarios.In short, we focus on tangible outcomes rather than mere proofs of concept that end up gathering dust. Why Join Us?Ready to elevate your expertise? At SFEIR, you don't have to choose between technical excellence and a collaborative environment; here, both go hand in hand.You will join a community of experts where your skills define your trajectory, not rigid job titles. This is what we call a “Skill-Based Organization”: you shape your journey based on your aspirations, not a fixed hierarchy.Your growth is accelerated by collective knowledge:- Genuine technical management: your Engineering Manager codes on client projects,- Rigorous recruitment through our technical assessments...

We are seeking a talented and motivated Java Developer to join our innovative team at Alten. As a Java Developer, you will play a crucial role in designing, developing, and maintaining high-quality software applications that meet the needs of our clients. You will work collaboratively with cross-functional teams to deliver robust solutions while utilizing best practices in software development.

Join our Software Development Division at altersolutions, where you will be part of a dedicated team focused on designing and evolving cutting-edge applications that are both modern and high-performing. We are looking for a Fullstack Developer with advanced expertise in NodeJS and a strong command of ElasticSearch to strengthen our team.As a Fullstack Developer, your key responsibilities will include:Developing and maintaining fullstack applications utilizing NodeJS for backend and Svelte for frontend development.Designing and optimizing solutions around ElasticSearch for effective data search and analysis.Participating in the architecture and evolution of applications in collaboration with technical teams.Integrating cloud solutions on GCP to ensure scalability and optimal performance of applications.Engaging in agile rituals (daily stand-ups, backlog refinement, sprint reviews, retrospectives).Contributing to continuous improvement of development best practices, code quality, and performance metrics.

Join altersolutions as a Full Stack .NET React Developer and become a vital part of our innovative team in Lille. We are looking for skilled developers who are passionate about creating seamless software solutions using the latest technologies.

Role Overview Magellan Partners is looking for a Fullstack Java/Angular Developer to join the team in Lille. This position focuses on building and maintaining applications using both Java and Angular. The work supports client projects and aims to deliver reliable, user-friendly solutions. What You Will Do Develop and maintain scalable applications with Java and Angular Collaborate with colleagues from different disciplines to design and implement new features Contribute to improving user experience through thoughtful application design Location This role is based in Lille.

Role Overview nexton is hiring a Senior Java Developer for its team in Lille. This role focuses on contributing to key projects and supporting the company’s technology goals. The team values initiative, technical skill, and a drive to solve complex problems. What You Will Do Design, build, and maintain Java applications Work closely with other developers and stakeholders to deliver project goals Troubleshoot and resolve technical challenges as they arise Contribute ideas and expertise to improve solutions and processes What We Look For Strong experience in Java development Ability to work independently and as part of a team Interest in tackling technical challenges Motivation to contribute to ongoing projects and company success Location This position is based in Lille.

At Exotec, we harness technological excellence to redefine the interaction between humans and robots. Our revolutionary solutions are transforming how our clients deliver products to consumers worldwide, enhancing the success of top brands in commerce and industry while improving working conditions for their employees.Through the combination of artificial intelligence and high-performance hardware, our robots are deployed globally, making us the leading French industrial unicorn.Joining Exotec offers you the chance to give meaning to your skills. Grow with our ExoPeople around the globe to turn your ideas into reality.Are you ready to be part of the robotic revolution that Exotec is pioneering?In the context of our fleets of robots designed for order preparation, the aim of this internship is to enable the autonomous deployment of our mobile robots within a warehouse.Once the map is generated, analyze areas of ambiguity to allow the robots to localize themselves accurately.To achieve this, the intern will need to:Understand the context and use cases by leveraging feedback from our deployed systems.Conduct a state-of-the-art review of existing technologies and algorithms.Experiment and implement the proposed solution on our systems while considering embedded constraints and hardware capabilities.Propose testing procedures to validate results and the robustness of the chosen solution.

Role Overview Magellan Partners is hiring a Fullstack Java React.js Developer (H/F) in Lille. This role involves working with a collaborative team to create, improve, and support software solutions that meet real business needs. What You Will Do Design, build, and maintain applications using Java and React.js Work closely with other developers and team members on project delivery Contribute to technical discussions and help shape project direction Support ongoing improvements and resolve technical challenges as they arise Who We Are Looking For Motivated developer ready to take on new challenges Interest in contributing to innovative projects Strong teamwork and communication skills Location This position is based in Lille.

Are you a passionate coder who thrives in a tech-savvy environment? Do you believe that AI will redefine your profession?Welcome to SFEIR! What We Are Looking ForYou are not afraid to:- Master Java and its ecosystem with ease,- Navigate Spring Boot, Quarkus, microservices architecture, and advanced patterns,- Focus on performance, scalability, architecture committees, and code quality,- Mentor and train others while sharing your expertise with teams,You aspire to be a technical reference, not just another feature developer. Exciting Projects You Could Work On- Solve complex performance issues in critical applications,- Participate in architecture committees to make pivotal technical decisions,- Lead development teams while ensuring best practices,- Design robust and scalable Java architectures for our clients.In short, we seek high-level technical expertise, not just maintenance tasks. What Can You Earn at SFEIR?After the PlayOffs and technical tests, we will assess your skills and potential to offer a competitive salary. As a reference, the average salary for an experienced data engineer at SFEIR Lille starts at €48,000 gross per year.Your salary will be reviewed annually.Your skills are what matter the most! Why Join Us?Ready to elevate your expertise? At SFEIR, you won’t have to choose between technical excellence and a collaborative environment; here, both go hand in hand.

About the Apprenticeship inetum2 is hiring a Junior Developer apprentice in Lille. This role suits recent graduates or those beginning a software development career. Apprentices work alongside seasoned developers, building practical skills through real project work. What You Will Do Collaborate with experienced team members on development tasks Apply and grow programming skills in a professional setting Contribute to ongoing projects and learn industry practices Location Lille

About the Role inetum2 is looking for a Java / Spring Developer to help build and support software solutions in Lille. This role involves working closely with colleagues from different backgrounds to design, develop, and maintain applications tailored to client requirements. What You Will Do Collaborate with cross-functional teams on application design and development Write, test, and maintain Java code using the Spring framework Contribute to ongoing improvements and updates for existing software Troubleshoot issues and help ensure applications meet client needs Who We’re Looking For Experience with Java and Spring Enjoys problem-solving and working with others Willing to learn and grow with the team This position is based in Lille.

Role Overview Magellan Partners is seeking a Fullstack Java Developer with experience in Vue.js for its Lille office. This role focuses on building web applications and delivering clear, user-friendly interfaces. What You Will Do Develop and maintain web applications using Java and Vue.js Create intuitive user interfaces Work closely with cross-functional teams to improve software solutions Location This position is based in Lille.

Join our dynamic team at nexton as a FullStack Developer H/F! In this role, you will be responsible for developing innovative web applications and software solutions that enhance user experience and drive business success. You will work closely with cross-functional teams to design, implement, and maintain robust systems while ensuring high performance and responsiveness.Your expertise will be pivotal in shaping the future of our products. If you are passionate about technology and eager to contribute to a collaborative environment, we encourage you to apply!

We are seeking a talented Java Development Engineer to join our dynamic team in Lille. In this role, you will leverage your expertise to design, develop, and maintain innovative software solutions. You will collaborate closely with cross-functional teams to ensure the delivery of high-quality applications that meet user needs.

Passionné par le codage, tu es un développeur Java chevronné, prêt à innover avec l'IA comme alliée ?Rejoins SFEIR, une entreprise à la pointe de la technologie ! Ce que nous recherchons chez toiTu es à l'aise avec :- Une maîtrise approfondie de Java et de son écosystème,- Une expertise en Spring Boot, Quarkus, Kubernetes et architectures cloud-native,- La pensée microservices, architecture hexagonale, performance et scalabilité,- L'expérimentation, la documentation et le partage de bonnes pratiques.Tu cherches à comprendre les mécanismes sous-jacents, pas seulement à réaliser des CRUD. Projets passionnants à découvrir- Développement d'APIs robustes et performantes avec Quarkus sur Google Cloud,- Conception d'architectures microservices évolutives,- Migration d'applications legacy vers des solutions cloud-native,- Intégration de solutions Java dans des écosystèmes complexes chez nos clients.En somme, travailler sur des projets concrets, loin des applications en maintenance. Rémunération chez SFEIRNous déterminerons ta rémunération à l'issue de nos tests techniques basés sur tes compétences et ton potentiel. Pour te donner une idée, la rémunération moyenne à SFEIR Lille pour un développeur Java expérimenté commence à 44 000€ brut par an et est revalorisée chaque année. Notre atout : RAISEUne plateforme GenAI développée par nos experts, cloud-native, multi-LLM, permettant de créer des solutions puissantes facilement. Qui sommes-nous ?

Lead and Mentor Developers: Guide a team of developers in an international setting, coordinating and overseeing development tasks.Engage in Agile Methodology: Actively participate in all stages of the agile cycle alongside the Product Owner, encompassing design, development, testing, deployment, and maintenance of new feature releases.Implement Architectural Best Practices: Collaborate with your team to apply architecture, security, and performance recommendations, ensuring the quality and robustness of applications.Documentation and Knowledge Sharing: Document technical aspects and facilitate knowledge transfer with developers from various domains.Process Improvement: Contribute to the enhancement of product delivery processes by leveraging DevOps tools and agile methodologies.