Experienced React Native/NestJS Developer
Joining Nirio Payment Services, a subsidiary of the FDJ UNITED group, means participating in a simple mission: making everyday financial services accessible to everyone - bill payments, current transactions, and account solutions with IBAN - through a local network. As part of our development and the internalization of our technical skills, we are looking for a Fullstack Developer to strengthen our team. You will work on the evolution of a platform integrated into a complex financial ecosystem. You will be part of a multidisciplinary squad composed of a tech lead and developers, a PM/PO, and will work in close collaboration with cross-functional QA and Product Design teams.
- Design and development of end-to-end features: You will optimize both the backend (NestJS, Postgres) and the frontend (React Native).
- You will participate in the integration of APIs and SDKs from internal and external partners.
- You will ensure the maintenance and improvement of the platform's performance, stability, and security.
- Contribution to technical choices and best practices: You will participate in discussions on architecture and technical solutions.
- You will apply and promote good development practices: unit tests, integration tests, code reviews, and documentation.
- You will collaborate with QA and Product Designers to ensure robust deliverables that meet quality standards.
- Close collaboration with cross-functional teams: You will work with the PM/PO to understand user needs and propose suitable solutions.
- You will actively participate in agile ceremonies: stand-ups, sprint planning, retrospectives.
- You will ensure fluid communication with squad members and Tech Leads.
- You will propose any improvements or evolutions you deem useful.
- You have a strong command of JavaScript (TypeScript), NestJS, GraphQL for the backend, and React Native (Mandatory) for the frontend.
- You have good skills in relational databases (Postgres, Prisma).
- You are familiar with cloud environments (GCP) and CI/CD tools (GitLab) and are sensitive to good development practices: automated testing (Jest, Appium, Browserstack), security, documentation.
- You have at least 5 years of experience in fullstack development, ideally in complex environments.
- You enjoy teamwork and a product-oriented approach, and you are comfortable in an agile and multidisciplinary setting.
- Experience in the banking ecosystem or around Core Banking or Banking as a Service solutions.
- 13th month salary
- individual bonuses
- group savings plan
- parental policy
- health insurance
- 100 days of remote work per year
- meal voucher card
FDJ United is one of Europe's largest gaming and betting groups, formed after French lottery operator La Française des Jeux (FDJ) acquired Kindred Group - the company behind Unibet - in 2024 and rebranded the enlarged group in 2025. Headquartered in Boulogne-Billancourt, France, it operates lottery, online sports betting, casino and poker across multiple European markets and Australia. Its portfolio includes well-known online brands such as Unibet, 32Red and Maria Casino, alongside FDJ's French lottery and retail network. The group is listed on the Euronext Paris exchange.
