Ruby on Rails & Node.js Application Developer (m/f)

Join our dynamic team at myjobcompany1 as a Ruby on Rails & Node.js Application Developer. We're looking for passionate and skilled developers to create innovative applications that enhance user experiences. If you have a knack for developing scalable software solutions and enjoy working in a collaborative environment, this is the perfect opportunity for you…

Join Altersolutions as a talented .Net / React JS Developer and take your career to the next level! We are seeking an individual with a strong background in .Net and React JS to contribute to exciting projects in a dynamic environment. You will collaborate with a team of professionals dedicated to delivering high-quality software solutions.

About UsAt Doctolib, we are dedicated to creating scalable products that effectively serve millions of users across Europe while remaining maintainable by our talented team of developers. With multiple daily deployments and over 25,000 automated tests within our CI pipeline, our backend operates on Ruby on Rails, supported by PostgreSQL and MongoDB. Our PostgreSQL databases manage a massive 30TB of data and handle 30 million queries per minute during peak traffic.Joining the tech team at Doctolib means being part of a mission to develop innovative solutions that enhance the daily experiences of healthcare teams and patients alike. We operate in agile feature teams, collaborating closely with engineering, design, and business units.Your RoleAs the Engineering Manager, you will oversee the Core Backend Foundations team (ATP) in our Platform domain. ATP is responsible for building the foundational Ruby/Rails backend components used by all product teams, including framework elements, reusable building blocks, and ensuring security and reliability by default. Our goal is to streamline backend development for hundreds of engineers, enhancing both speed and safety.Our Platform domain prioritizes a 'Platform as a Product' philosophy, simplifying complex components so product teams can focus on accelerating their development to better serve healthcare professionals and patients. At ATP, we emphasize quality, scalability, and usability, providing essential components that uphold the highest standards of security.As an Engineering Manager, you will lead a skilled team of engineers, promote a culture of technical excellence, and shape the future of Doctolib’s backend platform. Your responsibilities will include:Guiding the team to achieve business objectives, driving individual performance and growth.Collaborating with your product partner to define the team's mission and vision, aligning on a clear roadmap for success.

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.

Role Overview JobTeaser is hiring a Senior Backend Engineer with strong Ruby experience to join the team in Paris. This role focuses on building and maintaining scalable backend systems that support our platform. What You Will Do Design, develop, and maintain backend solutions using Ruby Work with cross-functional teams to deliver reliable features and improvements Write high-quality code that supports a strong user experience Location This position is based in Paris.

Join inetum2 as an Experienced Application Developer/Integrator and be part of a dynamic team driving innovative solutions. In this role, you will leverage your skills to develop and integrate applications that meet our clients' needs, ensuring high-quality deliverables and efficient project execution.

Join Segula Technologies as a Rail Maintenance Technician specializing in Customer Support. In this vital role, you will be responsible for ensuring the optimal performance of our rail systems through regular maintenance, troubleshooting, and immediate response to customer inquiries.

Join iliad-free as a dynamic M&A Business Development Manager in Paris. In this pivotal role, you will spearhead mergers and acquisitions, driving growth and innovation within our organization. Your expertise will guide strategic decisions and shape the future of our company.

Join Wavestone as we delve into the innovative world of AI solutions tailored for application development. In this exciting role, you will be at the forefront of experimenting with cutting-edge AI technologies, contributing to the creation of impactful applications that enhance user experience and efficiency.

Join Altersolutions as a Java Angular Developer H/F, where you will be part of a dynamic team tasked with developing innovative web applications. We are looking for someone with a passion for technology and a strong foundation in Java and Angular frameworks.

nexton seeks an Android Kotlin Developer to join a team working on mobile applications for the Telco Media Transport sector. The group is dedicated to delivering new features and ensuring a high-quality experience for users. Responsibilities Build and maintain Android apps using Kotlin Work closely with colleagues to deliver stable, well-tested features Suggest and implement improvements for app performance and usability Location This role is based in Paris.

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.

At Theodo, we are always on the lookout for talented individuals to join our dynamic teams. If you don't see your ideal position listed among our current openings, don't let that hold you back. We firmly believe that every unique talent can contribute to our success!

Join the Ubisoft AI Initiatives team and help architect the future of information lifecycle management at Ubisoft. From advanced hybrid search pipelines to sophisticated agentic reasoning capabilities, we create tools that transform raw data into swift, informed decision-making. If you are eager to push the boundaries of collaboration between humans and AI to tackle complex challenges, this position is perfect for you.We are seeking an experienced Senior Software Engineer to become a vital member of our team focused on developing scalable back-end systems that power these cutting-edge AI applications.ResponsibilitiesAs a Senior Software Engineer – AI Applications, you will play a crucial role in designing and building essential services that enable our solutions. You will work at the intersection of AI, enterprise cloud applications, large-scale data processing, and cloud infrastructure, with numerous opportunities for growth and impact. This role requires a solid understanding of modern architectures, AI/ML integration, and a genuine passion for solving complex problems.Architect and develop back-end systems: Design and implement high-performing, scalable back-end services to support AI applications.Optimize performance: Ensure low-latency serving and high throughput for AI models, agents, and APIs while optimizing speed and reliability.Collaborate with teams: Partner with data scientists and ML engineers to integrate advanced AI models and agents into production, ensuring smooth deployment and monitoring.Cloud infrastructure: Build and maintain cloud-native solutions using platforms like AWS or Azure, focusing on scalability, security, and cost management.Technical leadership: Mentor junior engineers, conduct code reviews, and contribute to the team’s overall technical strategy.Technology watch: Stay updated on the latest trends in AI, cloud computing, and engineering, and propose innovative ideas.Joining our team as a Senior Software Engineer – AI Applications offers a unique opportunity to work on cutting-edge projects that shape the future of AI technology. You will have the chance to:Engage in continuous learning to stay at the forefront of AI advancements.Take on more responsibilities and influence the strategic direction of our AI products while contributing to high-impact innovation.

Join Nexton as a Product Owner for Applications in Paris! We are looking for a passionate individual who can bridge the gap between our development teams and business stakeholders. You will play a vital role in managing the product lifecycle, from ideation to launch, ensuring that our applications meet the needs of our clients in the Telco Media Transport sector.

As a leader in the online flash sales industry since 2001, Veepee stands at the forefront of European e-commerce, partnering with over 7,000 esteemed brands to deliver exceptional products at unbeatable prices. With a diverse portfolio spanning fashion, home goods, wine, travel, and beauty, Veepee has achieved an impressive turnover of 3.3 billion euros (incl. VAT) in 2024 and boasts a workforce of 5,000 talented individuals across 10 countries. JOB DESCRIPTIONWe are in search of a dynamic Fullstack Developer to join our Brand Payment team, a pivotal part of our Operations domain and Corporate Services tribe (Finance & HR). In this role, you will contribute to the development of a centralized platform designed for the collection, management, and sharing of B2B financial data with SAP S/4Hana Cloud. Your close collaboration with business stakeholders will be essential in enhancing our B2B financial cockpit and implementing future improvements in response to European regulatory changes.

Join Talan as an Application Support Consultant where you will play a crucial role in ensuring the seamless operation of our applications, providing expert support, and contributing to the overall success of our projects. You will collaborate with cross-functional teams to resolve issues, optimize application performance, and enhance user experience.

Role overview Artelia is hiring an Assistant Chef / Project Manager to support rail transport projects in Paris. This role involves coordinating and managing several rail initiatives, with a focus on meeting schedules and upholding quality standards throughout each project phase. Key responsibilities Assist in planning and executing rail transport projects from start to finish Coordinate activities across various project teams to ensure smooth progress Monitor project timelines and quality benchmarks, helping to keep deliverables on track Collaborate with colleagues to develop and implement practical solutions for rail transport challenges Team environment This position works within a team committed to improving rail transport in Paris. Daily tasks involve close collaboration and collective problem-solving with other professionals at Artelia.

Join our dynamic team at iliad-free as a Senior Python/Django Developer. In this pivotal role, you will be responsible for designing, developing, and maintaining high-quality web applications that enhance user experience in the Free TV sector. You will collaborate with cross-functional teams to deliver innovative solutions that address real-world challenges.

Join Speechify as a Senior Software Engineer focusing on Windows/Desktop applications in the vibrant city of Paris. In this role, you will be instrumental in designing, developing, and maintaining high-quality software solutions that redefine how users interact with text and audio. Your expertise will guide our team in implementing innovative features that enhance user experience and drive our mission forward.