Fullstack Engineer React / Python / TypeScript, GCP - Freelance (H/F)

France | Nov. 5, 2026

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Company: Collective.work

Country: France

Type: Onsite

Employment: Full-time

Description: Daily rate (TJM): Budget: Target TJM €500 excluding tax/day (depending on profile and seniority) FULLSTACK ENGINEER REACT / PYTHON / TYPESCRIPT, GCP PRACTICAL INFORMATION: Department: Paris (75) Start: 11/16/2026 Duration: 6 months (potentially extendable) Contract: Permanent contract or freelance Budget: Target TJM €500 excluding tax/day (depending on profile and seniority) Teleworking: 2 to 3 days per week Seniority: 5 years of experience minimum Open position: 1 Sector: Urban mobility & Software publishing CONTEXT: As part of the development of its digital solutions, a company specializing in software dedicated to urban mobility is looking for a Fullstack Engineer React / Python for one-off reinforcement of 6 months (potentially extendable) within its technical team. You will join a multidisciplinary team working on web applications and APIs to analyze, optimize and improve mobility networks. The objective is to quickly contribute to the development of end-to-end functionalities, from technical design to production, with particular attention paid to performance, scalability and software quality. MAIN MISSIONS: * Develop Fullstack features in React, TypeScript and Python, from design to production. *    Design and develop efficient web interfaces and robust APIs. *    Participate in technical architecture choices and in improving the scalability of applications. *    Ensure code quality through automated testing, code reviews and best development practices. *    Contribute to deployments on Google Cloud Platform (GCP) and to the improvement of CI/CD processes. TECHNICAL ENVIRONMENT: *    Frontend: React, TypeScript, web interface development. *    Backend & APIs: Python, design and development of APIs. *    Cloud & deployment: Google Cloud Platform (GCP), put into production. *    CI/CD & software quality: Git, CI/CD, automated tests, code reviews. *    Data & processing: Pandas (appreciated, not obligatory). PROFILE WANTED: * Minimum 5 years of experience in software development, ideally in web or SaaS environments. *   Strong expertise in React/TypeScript and excellent command of Python, with an ability to develop end-to-end Fullstack features. *    Mastery of API design and experience on Google Cloud Platform (GCP), in particular to support developments through to production. *   Autonomy, pragmatism and sense of product, with an ability to participate in technical choices and to propose solutions adapted to needs. *    Excellent ability to collaborate within a multidisciplinary team, with an approach focused on quality, performance and production.

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