Open Source Web GIS Developer Engineer (H/F)

About Magellium Artal Group Magellium, part of the Artal Group (300 employees), is an independent key player specializing in Information Technology and Digital Geography within its clients’ information systems. Magellium supports its clients with a 360° offering covering research, consulting, business analysis, development, and technical maintenance. You will join the Magellium Paris activity, which defines, designs, implements, deploys, and ensures the operational maintenance of IT and GIS systems for enterprise DSI, local authorities, and government agencies across all IT applications. Your Mission As part of our growth in geomatics and geographic information systems (GIS), we are recruiting an Open Source Web GIS Developer Engineer to join our Paris team. You will work on a strategic project for a major player in the energy transition, focusing on the design, evolution, and maintenance of a dedicated GIS platform for managing and valorizing geographic and energy asset data. Within a team of GIS experts, you will participate in the design and evolution of a modern web mapping solution, built on open-source technologies. Your Responsibilities Depending on your experience and interests, your responsibilities will include: Designing and developing GIS web applications and services Evolving and customizing cartographic interfaces and business functionalities Implementing and evolving OGC geographic services (WMS, WFS, WCS…) Configuring, administering, and optimizing GeoServer Developing and integrating features in MapStore Managing and valorizing geographic data in PostgreSQL / PostGIS environments Developing scripts and tools for GIS process automation, especially in Python Implementing processing to improve data quality, reliability, and performance Analyzing and resolving technical issues related to data, geographic services, and GIS architecture Contributing to the industrialization and continuous improvement of the platform Participating in the design, development, integration, and maintenance phases of the solution You may also be involved in the GeoNode / GeoOrchestra ecosystem and more broadly across various components of the Open Source GIS ecosystem. Your Technical Environment You will work in a rich technological environment, notably around: GeoServer MapStore GeoNode / GeoOrchestra PostgreSQL / PostGIS Python JavaScript / Web development OGC standards and services: WMS, WFS, WCS… Open Source GIS ecosystem Profile Sought Education: Master’s level (Bac+5) in geomatics, computer science, GIS, or equivalent Experience: Ideally minimum 3–5 years in GIS, geomatics, or web mapping development projects Proven experience with Open Source GIS environments, particularly with GeoServer, PostGIS, and/or web mapping solutions such as MapStore, GeoNode, or GeoOrchestra Strong interest in issues at the intersection of software development, geographic data, and business requirements Curious, autonomous, with strong analytical skills—able to understand complex issues and build robust, sustainable solutions Proficiency in English, especially in technical contexts, is appreciated Why Join Magellium Artal Group? Joining Magellium Artal Group means becoming part of a group recognized for its expertise in geomatics, Earth observation, space systems, and information systems. You will join a team of digital geography experts, working on high-value technological and business projects, in an environment where Open Source, innovation, and technical expertise are central. You will work on a concrete project at the heart of digital transformation and energy transition, with opportunities to develop your skills across the entire GIS chain: data, geographic services, web development, cartography, and architecture. At Magellium Artal Group, diversity and inclusion are fundamental to our operations and embedded in our values. We respect the diversity of our employees—their experiences, backgrounds, and disabilities—and provide equal opportunities to all. All different, all competent!