Collective.work

About the Company

Une plateforme, deux volets : 1) un volet recruteur, la MegaSearch, pour sourcer, contacter et recruter sans commission les 500,000 freelances de Collective (vive l'IA !). => Par ici pour avoir une démo de l'interface Recruteur : https://calendly.com/juliette-collective-work/demo-collective-work-clone 2) un volet freelance pour se rendre visible et joinable des recruteurs, développer son réseau, et se professionnaliser via des outils de gestion. Faites comme 2,500 ESN, entreprises, cabinets et agences (Theodo, Artefact, Cherrypick, OnePoint, Le Hibou, Freelance.com,…) publiez - sans commission - vos besoins freelance sur Collective !

Listed Jobs

Company Name

Collective.work

Job Title

Développeur Fullstack H/F - Freelance

Job Description

**Job title:** Full Stack Developer (Freelance) **Role Summary:** Design and develop web applications and user interfaces for data‑centric solutions, working closely with product teams and data scientists. **Expectations:** - Deliver high‑quality, maintainable code within short deadlines. - Collaborate cross‑functionally with designers, product managers, and AI experts. - Maintain best‑practice standards, test coverage, and clear documentation. **Key Responsibilities:** 1. Build backend services using Python (Django/Flask). 2. Create dynamic, responsive front‑end UIs with Angular, React, or Vue.js. 3. Design and consume RESTful APIs, integrating with data pipelines (Pyspark, Streamlit). 4. Optimize application performance and handle database interactions with PostgreSQL, MySQL, or MongoDB. 5. Participate in code reviews, unit/functional testing, and continuous integration (Jenkins). 6. Directly gather and challenge business requirements, ensuring technical feasibility. **Required Skills:** - Strong Python proficiency with Django or Flask. - Expertise in a modern front‑end framework (Angular, React, or Vue.js). - RESTful API design and integration. - Experience with relational and NoSQL databases (PostgreSQL, MySQL, MongoDB). - Version control with Git. - Familiarity with OpenShift, Streamlit, Pyspark, Scala/Hadoop, and Jenkins. - Ability to work autonomously and communicate effectively across teams. - Familiarity with AI/Machine Learning concepts is a plus. **Required Education & Certifications:** - Bachelor’s degree in Computer Science, Software Engineering, or related field. - Relevant certifications in Python/Django, front‑end frameworks, or cloud platforms are advantageous.

Paris, France

Hybrid

28-10-2025

Company Name

Collective.work

Job Title

Développeur full stack .Net/Angular H/F

Job Description

**Job title** Full Stack Developer .Net/Angular (M/F) **Role Summary** Develop and maintain high‑performance full‑stack applications for industrial R&D microscopy systems using .Net, Angular, C#, TypeScript, and Python. Collaborate cross‑functionally in a multi‑disciplinary, multicultural team while delivering clean, testable code. **Expactations** - Work in a technically challenging, multidisciplinary environment. - Design and implement solutions that meet stringent quality and performance requirements. - Continually acquire domain knowledge in transmission electron microscopy (TEM) to effectively test and validate new features on real hardware. - Communicate clearly in English with international teammates. **Key Responsibilities** - Translate user stories into actionable tasks. - Create architecture and design documents in coordination with technical leads. - Code, unit‑test, and deploy front‑end (Angular, TypeScript) and back‑end (.Net, C#, Python) services. - Perform debugging and troubleshooting in simulation and on physical devices. - Participate in sprint planning, daily stand‑ups, reviews, and retrospectives. - Integrate and automate testing pipelines using suitable frameworks. - Uphold DevOps practices for continuous integration and delivery. **Required Skills** - .Net (C#) development - Angular framework and TypeScript - Python programming - DevOps familiarity (CI/CD, containerization) - Test automation (plus) - Strong problem‑solving and quality focus - Fluent in English; experience in multicultural settings **Required Education & Certifications** - Bachelor’s degree in Computer Science, Software Engineering, or equivalent. - No mandatory certifications, but knowledge of DevOps tools and testing frameworks is advantageous.

Bordeaux, France

Hybrid

28-10-2025

Company Name

Collective.work

Job Title

Developpeur Java Senior (H/F)

Job Description

Job Title: Senior Java Developer (H/F) Role Summary: Design, develop, and maintain high‑performance Java backend applications for a strategic portfolio of public service software. Collaborate closely with architects, project managers, and junior developers to deliver robust, scalable solutions. Expactations: Deliver quality code that meets functional and non‑functional requirements, ensuring system stability, security, and performance. Guide junior developers in adopting best practices, support long‑term technical roadmap, and manage corrective and evolutionary maintenance over a 12‑month renewable contract. Key Responsibilities - Design and implement scalable, maintainable Java back‑end components using Spring, Maven, and related technologies. - Analyse business requirements, propose and validate technical solutions in collaboration with architects and PMs. - Apply development best practices: code reviews, unit/integration testing, continuous integration, and detailed technical documentation. - Mentor and support junior developers to uphold coding standards and quality. - Perform corrective and evolutionary maintenance of existing applications, ensuring reliability, security, and performance. Required Skills - Minimum 8 years of professional Java development experience. - Proven expertise in Java EE/Spring frameworks, Maven, Git, CI/CD pipelines, and related tooling. - Strong analytical and technical design abilities. - Experience with code quality processes (review, testing, CI). - Good communication, teamwork, and service‑oriented mindset. Required Education & Certifications - Bachelor’s degree or equivalent in Computer Science, Software Engineering, or related field (or comparable experience). - Relevant certifications (e.g., Oracle Certified Professional, Java SE; Spring Professional) are advantageous but not mandatory.

Paris, France

Hybrid

Senior

28-10-2025

Company Name

Collective.work

Job Title

Développeur Cobol

Job Description

Job Title: COBOL Developer Role Summary: Develop, maintain, and test COBOL applications within an IBM mainframe environment, focusing on CICS, DB2, and VSAM integration, while ensuring code quality and adherence to industry best practices. Expectations: Deliver clean, well‑documented COBOL code, conduct unit and integration tests, collaborate with cross‑functional teams, meet project deadlines, and continuously improve development processes through modern tools and standards. Key Responsibilities: - Design, implement, and debug COBOL programs. - Develop and maintain CICS transaction logic and screen interfaces. - Create and optimize DB2 relational and VSAM data structures. - Utilize TSO/Shell or IBM Eclipse with IDZ for development and debugging. - Manage source control with GIT. - Generate and review code quality metrics using SonarQube. - Participate in change management activities with CHANGEMAN. - Provide technical support and troubleshooting. - Document system designs, technical specifications, and test plans. Required Skills: - Strong proficiency in COBOL (ANSI/ISO). - Hands‑on experience with CICS, DB2, and VSAM. - Familiarity with TSO or IBM Eclipse with IDZ. - Source control using GIT. - Code quality monitoring with SonarQube. - Knowledge of CHANGEMAN (Change Management) process. - Debugging and performance tuning skills. - Solid understanding of mainframe environments. - Good communication and documentation skills. Required Education & Certifications: - Bachelor’s degree in Computer Science, Information Technology, or related field (preferred). - Relevant mainframe or COBOL certifications (e.g., IBM Certified Developer – COBOL) are a plus.

Paris, France

Hybrid

29-10-2025