Backend .Net Developer - Freelance H/F

Job description

Missions

• Design, develop, test, and maintain high\-quality .Net APIs and services that integrate seamlessly with front\-end applications and other platform components.


• Collaborate closely with Product Owners, UX Designers, and other developers within cross\-functional Agile teams, following the SAFe framework’s quarterly planning cycles.


• Ensure code quality through peer reviews, automated tests, and continuous integration pipelines.


• Address performance, scalability, and security challenges inherent to multi\-currency, multi\-country platforms.


• Troubleshoot and resolve production issues promptly, while contributing to technical documentation and knowledge sharing sessions.


• Embrace and drive continuous improvement in practices, tools, and automation, aligned with core values: speaking your mind, building trust, maintaining a winning spirit, and having fun while working hard.


• Impact millions of end users indirectly via seamless client product experiences in a fast\-growing, energized environment where your voice counts and your work truly matters.

Tools \& Environment

• Backend development using .Net Core / .Net 6\+


• Programming in C\#, RESTful API design, and microservices architecture


• Working with SQL and NoSQL databases, ORM frameworks such as Entity Framework


• Containerization technologies: Docker, Kubernetes


• Cloud platforms: Azure preferred


• CI/CD pipelines, automated testing, and DevOps culture


• Security best practices for APIs and data protection regulations compliance


• Agile methodology following the SAFe framework

Working Conditions

• Location: Paris


• Work mode: Hybrid (Onsite \& remote)


• Expected start date: ASAP

Requirements

• Proven experience in backend development using .Net Core / .Net 6\+


• Strong knowledge of C\#, RESTful API design, and microservices architecture


• Familiarity with SQL and NoSQL databases, and ORM frameworks such as Entity Framework


• Experience with containerization technologies (Docker, Kubernetes) and cloud platforms (Azure preferred)


• Understanding of CI/CD pipelines, automated testing, and DevOps culture


• Good grasp of security best practices for APIs and data protection regulations compliance


• Proactive communicator who feels comfortable expressing ideas and challenges constructively


• Team player who builds trust through reliability and transparency


• Resilient and ambitious, motivated by high expectations and delivering impactful outcomes


• Positive attitude toward work and camaraderie, enjoying collaboration and successes with peers


• Fluent in English for daily communication in a multicultural environment

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