Full Stack Developer (Backend/Frontend) H/F

On-site Full-time

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Qualifications

Proficient in both backend and frontend technologies. Experience with modern frameworks and libraries. Strong problem-solving skills and the ability to work collaboratively. Fluency in English; knowledge of French is a plus.

About the job

Join everience as a Full Stack Developer where you will work on exciting projects that blend backend and frontend development. You will be integral to our team, contributing to the design, development, and maintenance of innovative applications. If you are passionate about technology and eager to take on new challenges in a dynamic environment, we would love to hear from you!

About everience

everience is a forward-thinking company dedicated to leveraging technology to create impactful solutions. Our collaborative environment fosters innovation and growth, making us a great place for tech enthusiasts to thrive.

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Java Backend Developer

inetum2

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inetum2 seeks a Java Backend Developer based in LA CHAPELLE SUR ERDRE. The role centers on designing and building backend systems that address client needs. Regular collaboration with front-end developers and other team members helps ensure software products reach high quality standards. Main responsibilities Design backend architectures with Java Implement …

Apr 25, 2026

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Backend .Net Developer

altersolutions

Full-time|On-site|AVIGNON

Join our dynamic Agile team at ALTER SOLUTIONS as a Backend .Net Developer, working alongside industry experts in software development.You will be assigned to a leading company in the construction sector, contributing to a team focused on developing applications for project management.Key Responsibilities:Designing and developing robust backend solutions.Conducting unit and integration testing to ensure code quality.Performing corrective and evolutionary maintenance on developed applications.Engaging in code reviews and promoting the continuous improvement of best practices.

Oct 3, 2025

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Backend Developer (H/F)

Alten

Full-time|On-site|Grenoble

Join Alten as a Backend Developer and be part of a dynamic team dedicated to developing innovative software solutions. You will play a key role in designing, building, and maintaining scalable applications that meet the evolving needs of our clients. This position offers a unique opportunity to work on exciting projects in a collaborative environment.

Mar 19, 2026

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Python Backend Developer

Octopus Energy

Full-time|On-site|Paris (FR)

Join Octopus Energy, where we challenge the status quo in the energy sector by making it greener, more affordable, and accessible to everyone. Originally launched in the UK, our innovative approach has expanded to France since 2022! We combine cutting-edge technology with a team of dedicated professionals who are passionate about our customers and the transition to renewable energy. In just three years, we have grown to become the fifth-largest energy supplier in France! Our mission? To provide all French citizens with cheaper and greener energy, along with practical solutions to accelerate the ecological transition. Currently, we are developing the next generation of products that empower the shift towards sustainable energy. Whether it's facilitating the transition to solar energy and electric vehicles, launching smart pricing, or scaling renewable energy production, we tackle some of the most complex challenges in the energy field! We do this with speed, creativity, and a singular focus on customer satisfaction. As a member of the Octopus Tech team, you will have genuine autonomy, a diverse range of projects to work on, and the opportunity to create products that make a significant impact on people's lives, helping them reduce their bills, live more sustainably, and enjoy truly engaging experiences. You will collaborate closely with our French teams in marketing, operations, and data, as well as with technical teams from other countries in the group . Above all, you will see the real-world impact of your work on our customers quickly. Within the OE Tech France team, you're not just coding; you're building the technological engine that makes green energy simple and intuitive for everyone in France. You will join a small, agile, and innovative team where seniority and collaboration are paramount:- A strong core: You will work daily with 1 Product Manager, 4 Frontend Developers, and 3 Backend Developers. The Backend team is currently composed mainly of senior profiles, allowing you to thrive in a demanding and stimulating technical environment.- Synergy with Data : You will work closely with data experts to leverage insights that drive our innovations.

Apr 22, 2025

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Senior Backend Developer - Node.js

Jobgether

Full-time|Remote|France

Role overview Jobgether is looking for a Senior Backend Developer specializing in Node.js for a partner company based in France. The engineering team creates and maintains backend systems that support digital financial products used worldwide. What you will do Design, build, and maintain secure, scalable backend services with Node.js Improve the core platform architecture to enable new features and products Optimize API performance and ensure reliability Help strengthen infrastructure resilience and system uptime Promote technical innovation within the team Tackle complex challenges in real-time systems, microservices, and distributed applications How work happens This is a remote-first role. The team works across regions, giving members autonomy and ownership over their projects. Collaboration with skilled engineers is central, with flexibility to manage personal workflows. Who thrives here Backend developers with solid Node.js experience Engineers committed to building secure, scalable, and highly available systems Problem-solvers who enjoy working on distributed, real-time environments People motivated by making an impact on products used around the globe

Apr 28, 2026

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Backend PHP Developer (H/F)

myjobcompany1

Full-time|On-site|Orléans

Join our dynamic team as a Backend PHP Developer (H/F) where you will play a crucial role in developing robust and efficient backend solutions for our innovative projects. You will work closely with cross-functional teams to design, implement, and maintain backend systems that power our applications.

Apr 29, 2016

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Backend PHP Developer (H/F)

myjobcompany1

Full-time|On-site|Lieusaint

Join our dynamic team at myjobcompany1 as a Backend PHP Developer (H/F). We are seeking a passionate and skilled developer to contribute to our innovative projects. In this role, you will design, implement, and maintain server-side applications using PHP, ensuring high performance and responsiveness to requests from the front-end.

Apr 29, 2016

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Backend PHP Developer (H/F)

myjobcompany1

Full-time|On-site|Paris

Join our dynamic team at myjobcompany1 as a Backend PHP Developer! We are on the lookout for a talented individual who is passionate about coding and eager to work on innovative projects. In this role, you will be responsible for developing and maintaining backend services, ensuring high performance and responsiveness to requests from the front-end.As part of our team, you will collaborate with front-end developers to integrate user-facing elements using server-side logic, and you will contribute to all phases of the software development lifecycle. We value creativity and technical expertise, and we encourage our team members to suggest improvements and new technologies.

Apr 29, 2016

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Backend Java Developer (H/F)

everience

Full-time|On-site|Annecy

Join our dynamic team at everience as a Backend Java Developer (H/F) in the beautiful city of Annecy. We are seeking a passionate and skilled developer who is excited about building robust backend systems using Java technologies. You will play a crucial role in developing, testing, and maintaining our applications, ensuring high performance and responsiveness.As a member of our engineering team, you will collaborate closely with front-end developers, product owners, and other stakeholders to deliver innovative software solutions. If you thrive in a fast-paced environment and are eager to tackle challenging problems, we want to hear from you!

Dec 17, 2025

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Backend Developer Perl (M/F)

Centreon

Full-time|On-site|Paris, Île-de-France, France

Centreon’s Research and Development team in Paris is hiring a Backend Developer with a strong background in Perl. This position centers on designing, improving, and maintaining the software behind Centreon Infra Monitoring. The primary focus is developing and updating connectors, programs that allow monitoring across a wide range of systems. Each connector includes configuration templates to help users supervise their infrastructure more effectively. What you will do Develop and maintain Perl-based connectors for Centreon Infra Monitoring Adapt to various technologies, working with both software and hardware systems Build connectors that integrate using REST APIs, non-REST APIs, SDKs, SNMP, and other protocols Address user-reported issues and deliver timely fixes Support the transition to new connectors developed in Rust Requirements Strong experience with Perl, essential for current connector development Comfort working with APIs (REST and non-REST), SDKs, SNMP, and varied system integrations Ability to troubleshoot and resolve technical issues efficiently Interest in learning or working with Rust as the connector stack evolves Location This role is based in Paris, Île-de-France, France.

Apr 21, 2026

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Senior Node.js Backend Developer

Jobgether

Full-time|Remote|France

Jobgether is seeking a Senior Node.js Backend Developer to join a partner company specializing in global digital finance services. This role is based in France and follows a remote-first approach, offering flexibility in where you work within the country. Key Responsibilities Design and implement secure, scalable backend systems using Node.js Develop and maintain real-time services and APIs that support financial products Collaborate with engineers in different regions to deliver products for a worldwide customer base Contribute to backend architecture decisions, distributed systems, and performance improvements Support the evolution of infrastructure for digital finance solutions Requirements Extensive experience in Node.js backend development Proven ability to build secure, scalable, and high-performance systems Comfort working in distributed teams and across time zones Interest in tackling complex technical challenges and adopting new technologies Appreciates autonomy, ownership, and ongoing improvement Work Environment Remote-first setup with the option to work anywhere in France Collaborative engineering team focused on innovation and meaningful impact

Apr 28, 2026

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Senior Backend Developer (H/F)

Safran.AI

Full-time|On-site|Paris

About Us Safran.AI, previously known as Preligens, is a subsidiary of Safran Electronics & Defense, offering cutting-edge artificial intelligence solutions for analyzing high-resolution satellite images, full motion video (FMV) streams, and acoustic signals. Our innovative technologies are employed across aerospace, defense, and government applications. Since our inception in 2016, we have developed complex algorithms and software that automatically analyze, detect, and identify military-relevant objects from commercial and government data. Joining Safran in September 2024, Safran.AI also plays a pivotal role in the group's transformation, applying AI solutions in the realm of Industry 4.0. For instance, our automated image analysis capabilities assist inspectors in identifying potential anomalies in critical components using digital imagery. At Safran.AI, innovation and the pursuit of a safer world are at the heart of our mission. By joining us, you will work alongside passionate, multidisciplinary teams (engineers, researchers, developers) who are among the most talented in the industry, all driven by a shared commitment to technological excellence. We foster a stimulating work environment that encourages creativity and initiative, where every idea is valued.

Nov 20, 2025

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Backend Java Developer - H/F

Inetum

Full-time|On-site|Antibes

To support the growth of our activities, we are enhancing our team and are looking for a Java Developer eager to thrive in an environment where collaboration, continuous improvement, and automation are at the forefront.Your RoleYou will be involved in the design and evolution of our back-end applications. As part of a multidisciplinary team, you will contribute to technical decisions, the development of new functionalities, and the operational maintenance of existing services.Main ResponsibilitiesDesigning and developing Java applications (Spring / Spring Boot).Implementing new features.Working with modern architectures that are API and microservices-oriented.Enhancing code quality through unit testing and continuous integration.Technical EnvironmentJava / Spring BootCI/CD Pipelines

Mar 16, 2026

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Senior Java Backend Developer H/F

inetum2

Full-time|On-site|AIX EN PROVENCE

Join inetum2 as a Senior Java Backend Developer where you will play a pivotal role in developing high-quality, scalable software solutions. You will collaborate with cross-functional teams to enhance our backend systems and ensure optimal performance. Your expertise will be instrumental in driving innovation and implementing best practices within the development team.

Apr 30, 2026

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Innovation Internship: Software Engineer / Backend Development

Alten

Internship|On-site|Grenoble

Alten is offering an internship in software engineering with a focus on backend development at its Grenoble location. This position is aimed at students or recent graduates who want hands-on experience working on technology projects within a collaborative team. Role overview Interns will join experienced engineers to support backend development work. The role involves contributing to the design and improvement of backend solutions, as well as assisting with the optimization of current systems. Ongoing project support is also part of the day-to-day responsibilities. What you will do Work with engineers on backend development tasks Contribute ideas and code to backend solutions Assist in optimizing and maintaining existing systems Support ongoing technical projects as part of the team Who should apply This internship is intended for those interested in software engineering and backend technologies. Applicants should be motivated to participate in technical projects and willing to collaborate closely with others in a team focused on innovation and learning.

Apr 21, 2026

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Senior Backend Developer - Strategy Team F/H/X

Veolia Environnement S.A.

Full-time|On-site|Colombelles

Join our dynamic Strategy Team as a Senior Backend Developer, where you will leverage your expertise to drive innovative solutions and enhance our technological frameworks. In this pivotal role, you will collaborate with cross-functional teams to design, implement, and optimize backend services that support our strategic objectives.

Mar 25, 2026

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Staff Engineer - Python Backend Development - Paris

iliad-free

Full-time|On-site|Paris

Join us at iliad-free in Paris as a Staff Engineer specializing in Python. You will take on a pivotal role in our ambitious program aimed at modernizing and evolving our backend systems.Your primary responsibility will be to lead the technical direction of our information system backend, which manages all Free subscribers, including subscription processes, subscriber spaces, and additional services such as video streaming and mobile phone sales.In this role, you will develop a deep understanding of complex business processes executed by our system, such as billing for third-party services, subscription management, and fiber optic connections.You will guide the team in defining the architecture of this distributed system while actively contributing to development using Python, ensuring hands-on involvement.Your expertise will drive development practices that prioritize resilience, quality, testability, and speed of delivery. Additionally, you will be instrumental in establishing robust operational methods in a model where development teams manage their solutions in production, with a constant focus on performance and scalability.

Feb 26, 2026

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Backend Python Developer - Paris - H/F

Iliad

Full-time|On-site|Paris

Join our dynamic team at Iliad as a Backend Python Developer in Paris! We are looking for passionate and skilled individuals to contribute to our innovative tech projects. You will work closely with cross-functional teams to design and implement robust backend systems, ensuring high performance and responsiveness to requests from the front-end.Key Responsibilities:Develop and maintain server-side applications using Python.Collaborate with front-end developers to integrate user-facing elements.Optimize applications for maximum speed and scalability.Participate in code reviews and contribute to team knowledge sharing.Stay updated with emerging technologies and best practices.

Mar 31, 2026

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Full Stack Developer (Backend/Frontend) H/F

everience

Full-time|On-site|Nanterre

Mar 24, 2026

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Staff Engineer - Python Backend Development | Montpellier

iliad-free

Full-time|On-site|Montpellier

Join our ambitious program aimed at modernizing and evolving our backend systems.As a Staff Engineer, you will take on a leadership role in the backend of our information system, which manages all Free subscribers: from subscriptions to user spaces, as well as additional services such as video streaming and mobile phone sales.You will develop a deep understanding of complex business processes performed by the system, including third-party service billing, subscription management, and fiber optic connectivity.Guide our team in defining the architecture of this distributed system and actively participate in Python development as a hands-on contributor.Implement development practices that ensure resilience, quality, testability, and delivery speed. You will also contribute to establishing robust operational methods, in a model where development teams operate their solutions in production, with a constant focus on performance and scalability.

Feb 26, 2026

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