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Jobs / Kindred Group (FDJ United) / Tech Lead Fullstack (Nest.js/React Native)
Posted 2026-05-21

Tech Lead Fullstack (Nest.js/React Native)

Translated from French
Description

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 the internalization of our technical skills and to support our growth, we are looking for a Tech Lead Fullstack. This strategic role will allow you to steer technical choices, manage a dedicated squad, and directly contribute to the evolution of our platform integrated into a complex financial ecosystem (Core Banking System, identity verification or strong authentication solution, wallets...). You will report directly to the CTO. As a Tech Lead, you will be responsible for the technical direction of your squad, composed of developers and a PM/PO with whom you will work in close collaboration, as well as with the transversal QA and Product Design teams. You will play a key role in implementing standards of excellence, relying on a modern tech stack based on JavaScript (TypeScript), NestJS, GraphQL, and React Native.

Responsibilities
  • Lead your squad and ensure end-to-end feature delivery
  • Supervise a squad composed of backend, frontend, or fullstack developers, in close collaboration with a PM/PO.
  • Ensure the delivery of functionalities while respecting Product priorities and quality standards.
  • Facilitate agile ceremonies (stand-ups, sprint planning, retrospectives) to maintain an optimal delivery pace.
  • Encourage the team's skill development by sharing your knowledge and fostering a culture of excellence.
  • Define and steer backend and frontend architecture choices to ensure system scalability and performance.
  • Implement and promote good development practices (testing, CI/CD, documentation).
  • Collaborate with QA to ensure robust deliverables that meet quality requirements.
  • Design and develop critical features by optimizing the backend (NestJS, Postgres) and frontend (React Native).
  • Oversee production deployments and ensure application stability.
  • Propose any improvements aimed at better system performance, end to end.
  • Participate in discovery workshops with the PM/PO to design technical solutions aligned with user needs.
  • Maintain fluid communication with other squads and Tech Leads to manage technical dependencies.
  • Contribute to the product vision by providing technical expertise and recommendations based on insights.
Requirements
  • At least 5 to 8 years of experience in fullstack development, including at least 2 years in a Lead or Tech Lead role.
  • Expertise in Javascript (Typescript), NestJS, GraphQL, and good knowledge of React Native.
  • Good mastery of relational databases (Postgres, Prisma).
  • Proficient use of GitLab CI, Jira, Confluence.
  • Experience with cloud environments (ideally GCP) and CI/CD tools (GitLab).
  • Sensitivity to good development practices (testing, security, documentation).
  • Understanding of technologies and processes related to financial systems would be a plus (Banking as a Service, Core Banking System, secure authentication, or mobile wallet solutions).
  • You have experience in managing and mentoring a technical team.
  • You are capable of uniting around standards of excellence and supporting developers in their progression.
  • You enjoy working in a product-oriented approach and know how to collaborate effectively with PM/POs as well as a QA team.
  • You are comfortable in multidisciplinary and agile environments.
Benefits
  • 13th month salary
  • individual bonuses
  • group savings plan
  • parental policy
  • health insurance
  • 100 days of remote work per year
  • meal vouchers