Développeur Java Fullstack – Mission Freelance – Paris - Freelance

8ème Arrondissement, Paris💼 Contract💰 $65,000–$91,000🗓 2026-05-21 → 2026-08-10

Core

Fullstack developer building and maintaining a critical application for a government/security sector client using Java backend and ReactJS frontend.

Role type

Fullstack Java developer

Builds

Production application features and maintenance

Domain

Government/Security sector

Deliverable

production ML models | product features

Required skills

Java, Spring Boot, ReactJS, JavaScript, Unit testing (JUnit), Docker, Ansible, PostgreSQL

Responsibilities

Develop and maintain backend services in Java Spring Boot, Develop and integrate frontend components in ReactJS, Write and execute unit tests, Participate in DevOps tasks including containerization and scripting, Model and query PostgreSQL databases

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About Collective.work

Financial Services310San Francisco, CA, USFounded 2020

Collective is the first all-in-one financial platform designed to give self-employed entrepreneurs the technology and team they need so they can focus on their passion, not their paperwork. Collective handles LLC and S Corp formation, payroll, taxes, monthly bookkeeping, compliance and more all in one place, exclusively for solopreneurs.