Vates is a French software company specializing in Open Source and virtualization, with a strong commitment to open and collaborative development. Our main projects, Xen Orchestra and XCP-ng, cover the entire virtualization stack — from the hypervisor (Xen) and the virtualization platform (XCP-ng) to virtual machine management and backup (Xen Orchestra). Our company operates in an international environment, working fully remotely, fluent English required.

Join a passionate engineering team where open-source principles, technical excellence, and collaboration drive innovation. As a XAPI Developer at VATES, you will contribute directly to the evolution of XCP-ng, a leading open-source virtualization platform.

Your Responsibilities :
-Optimize the performance and reliability of XAPI
-Participate in technical decisions and solution architecture
-Develop prototypes and technical demonstrations to validate new features
-Analyze and resolve technical issues identified on XAPI
-Define and implement corrective actions required to ensure product stability and performance
-Provide application support and maintenance related to XAPI and XCP-ng
-Delineate the technical roadmap of XAPI
-Develop and maintain APIs
-Ensure the quality, consistency, and security of XAPI data
-Collaborate with cross-functional teams
-Write technical and functional documentation
-Package and deploy the XAPI component within XCP-ng
-Write automated tests
-Collaborate with stakeholders involved in the XAPI project, as well as with teams from other organizations such as XenServer

Required Skills :
-Expertise in the OCaml programming language
-Proficiency in Git/GitHub
-Experience with testing environments (Jenkins/pytest)
-Strong analytical and problem-solving skills
-Excellent communication and teamwork abilities
-Attention to detail and commitment to quality
-Proactive mindset with a continuous improvement approach
-Curiosity and willingness to learn new technologies
-Adaptability in a fast-evolving technical environment

Why join us ?
At VATES, you will find a flexible work environment, a supportive and approachable team, and a role that makes a real impact on a daily basis.

Location :
Our offices are based in Grenoble or Paris, but we operate on a fully remote model to provide greater flexibility and daily work comfort.
You are free to work 100% remotely or come on-site occasionally, depending on your preferences.

Benefits:
-Health insurance coverage funded at 50% by the company
-Benefits provided by the Works Council (employee discounts, cinema tickets, etc.)
-Employee savings plan (PEE)
-Profit-sharing scheme
-Annual bonus
-100% remote work

As part of our diversity and inclusion policy, this position is open to all candidates, regardless of gender.

We are looking for someone who enjoys solving complex technical challenges, building reliable software, and contributing to an open-source virtualization platform used by companies worldwide.
-Bachelor’s degree to a Master’s degree in Computer Science, software engineering, software development, or information systems
-5 years of experience on development project in langage OCAML or several years of experience without degree.
-A professional experience in development within an open source environment is appreciated.
-Fluent English.