Coexya

About the Company

Coexya has been an independent entity since October 1st 2020 when it was acquired by the operational management team with the support of the European private equity group Argos Wityu, once part of Sword Group's French IT business created in November 2000.

Coexya's mission is to continue and accelerate the growth of its IT activities to become a major player in the valuation of data through its specialisations.

Coexya covers six fields of expertise: Customer experience, content & modern workplace, health, legal, location intelligence and smart data. Coexya works with more than 370 clients.

Created in November 2000, the company currently counts with more than 710 employees in France (Lyon, Paris and Rennes). On November 30, 2021, Geomod joined Coexya.

Listed Jobs

Company Name

Coexya

Job Title

Développeur fullstack expérimenté F/H

Job Description

Job Title: Senior Fullstack Developer (Geographic Information Systems) Role Summary: Design, develop, and maintain large‑scale web and mapping applications for GIS solutions. Lead technical implementation from concept through delivery, ensuring quality, performance, and scalability while collaborating with cross‑functional teams. Expectations: - Minimum 2 years of full‑stack development experience, preferably on enterprise or GIS projects. - Proven ability to produce production‑ready code and lead technical discussions. - Strong understanding of Git, CI/CD pipelines, and DevOps practices. Key Responsibilities: - Architect and build responsive web front‑ends using React and TypeScript (ArcGIS Experience Builder). - Develop robust back‑ends in Java or .NET (ArcGIS Enterprise) and expose APIs. - Integrate and manage GIS data layers, services, and spatial analytics. - Implement and maintain CI/CD pipelines to accelerate delivery and ensure code quality. - Write and maintain technical documentation, test plans, and conduct unit/integration tests. - Participate in code reviews, peer mentoring, and knowledge sharing sessions. - Conduct continuous learning and technology scouting in GIS, web development, and related tools. Required Skills: - Front‑end: React, TypeScript, HTML5, CSS3, ES6+. - Back‑end: Java (Spring) or .NET (C#) with RESTful services. - GIS: ArcGIS Platform (Experience Builder, Enterprise) and spatial data handling. - DevOps: CI/CD tools (e.g., Jenkins, GitLab CI, Azure DevOps), containerization (Docker), automated testing. - Version control: Git, branching strategies, pull request workflow. - Soft skills: strong analytical thinking, meticulous quality focus, excellent communication, and teamwork capabilities. Required Education & Certifications: - Bachelor’s degree in Computer Science, Software Engineering, Information Systems, or related field (not explicitly required but preferred). - Relevant certifications (e.g., ArcGIS Professional, Java Developer) are beneficial but not mandatory.

Saint-didier-au-mont-d'or, France

On site

Junior

27-01-2026

Company Name

Coexya

Job Title

Développeur Back - F/H

Job Description

Job Title: Backend Developer – F/M Role Summary: Join a 4–6 person R&D team in a software house to evolve the KAMI suite of Customer Communication Management tools. Work on refactoring and creating new product interfaces, adding new features, and proposing AI‑driven capabilities. Expectations: Complete ongoing product development, create additional modules, contribute technical proposals, and keep up with emerging technologies. Grow in a collaborative, quality‑oriented environment while delivering production‑ready code. Key Responsibilities: • Finalize development of existing features in the KAMI platform. • Design, implement, and maintain new product modules using Java/Kotlin. • Provide creative input on AI and machine‑learning opportunities within the product suite. • Collaborate with architects and senior developers for code quality, design reviews, and architectural guidance. • Document technical decisions, write user stories, and participate in CI/CD pipelines. Required Skills: • Strong proficiency in Java and Kotlin; hands‑on experience with at least one significant project or internship. • Solid algorithmic mindset with experience in problem‑solving and data structures. • Familiarity with ANTLR and experience or interest in SMT solvers (e.g., Z3, Klee) is advantageous. • Knowledge of editing tools Quadient & Exstream is beneficial. • Excellent communication skills in English (written and spoken) and ability to work in a team. • Self‑motivated, curious, and eager to learn emerging technologies. Required Education & Certifications: • Currently enrolled in a Master‑level (Bac +5) Computer Science or related degree with at least 1 year of study remaining. • No specific certifications required, though any coursework or certifications in Java/Kotlin, software architecture, or algorithmic design is a plus.

Rennes, France

On site

02-03-2026

Company Name

Coexya

Job Title

Développeur Agents Intelligents - F/H

Job Description

**Job Title:** Intelligent Agents Developer **Role Summary:** Develop autonomous AI agents and integrate AI solutions into business applications, collaborating with an R&D team on innovation projects. **Expectations:** Candidate must be enrolled in a final-year Bachelor’s or Master’s degree in computer science (or related field) pursuing a 1-year apprenticeship. **Key Responsibilities:** - Design and implement intelligent agents (autonomous systems, conversational agents) for internal automation and business applications - Participate in full agile development lifecycle (design, testing, deployment) - Collaborate on CI/CD pipelines, containerization (Docker/Kubernetes), and system integration - Monitor and document AI solutions using technical supervision tools (Grafana, Loki) - Contribute to R&D projects with a focus on generative AI, natural language processing, and intelligent automation **Required Skills:** *Technical:* Proficiency in Java (with a significant project or internship); working knowledge of Python; familiarity with AI/LLM frameworks (e.g., LangChain), NLP, and containerization (Docker/Kubernetes). *Soft Skills:* Autonomy, initiative, strong written communication, and ability to translate technical concepts for business impact. **Required Education & Certifications:** Bachelor’s or Master’s degree (Bac +5) in computer science or software engineering; no certifications required.

Rennes, France

On site

02-03-2026