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Sopra Steria

IT consulting, digital services, and transformation

Full Stack Developer Java React.js / React Native - Financial Services

Full-Stack Engineering +1Confirmed live in the last 24 hours
Full-timeÎle-de-France, FranceNo salary listed

About the Job

Requirements

  • Hold a degree from an engineering school, university education, or equivalent.
  • Have at least 5 years of experience with the Java, React.js, and React Native stack.
  • Have significant experience with critical applications in at least one of these environments: high-volume or real-time systems, enhanced security, or horizontal scalability.
  • Demonstrate proficiency in microservices, Kafka, Docker, Kubernetes, and continuous integration and continuous delivery.
  • Have previously held technical responsibility for an end-to-end scope.

Responsibilities

  • Design, develop, and evolve critical applications for consumer, business, internal, or distributed use in environments requiring performance, high availability, security, scalability, and advanced continuous integration and continuous delivery.
  • Develop Java 17 or later microservices using Spring Boot 3 or later.
  • Work with distributed and event-driven architecture.
  • Design and expose REST APIs, including standardization and versioning.
  • Implement batch processing with Spring Batch.
  • Optimize performance through multithreading, memory management, and profiling.
  • Interact with Oracle and PostgreSQL, including SQL tuning and indexing.
  • Implement robustness and security using OAuth2, JWT, role-based access control, and internal standards.
  • Develop single-page applications using React 18 or later, TypeScript, and Redux Toolkit.
  • Integrate a design system such as Material, an internal system, or an equivalent.
  • Manage advanced application state and optimize rendering.
  • Test frontend applications using Cypress or Jest.
  • Meet WCAG/RGAA accessibility requirements.
  • Develop and maintain React Native mobile applications for iOS and Android.
  • Design and integrate user interfaces for mobile applications.
  • Connect mobile applications to REST APIs or GraphQL.
  • Implement authentication and user-session management.
  • Build advanced continuous integration and delivery pipelines using GitLab CI or Jenkins.
  • Use Docker and Kubernetes orchestrators.
  • Monitor and support observability using Grafana, Prometheus, and ELK.
  • Apply quality practices including SonarQube; test-driven development is strongly valued.
  • Work using Agile/Scrum or a hybrid methodology.
  • Maintain technical documentation using OpenAPI and Confluence.
  • Participate in code reviews and pair programming.

Desired Qualifications

  • Test-driven development is strongly valued.

About the Company

Sopra Steria

IT consulting, digital services, and transformation

Sopra Steria provides consulting, digital services and solutions to help large organizations transform their business through technology. Its offerings cover strategy, systems integration, cloud, cyber security, software development, and managed services, designed to be delivered end to end—from assessing needs and designing a plan to implementing and operating IT systems. The company combines deep knowledge of many industries with a collaborative approach to tailor projects to each client and to deliver measurable, sustainable improvements in performance. Differentiators include its European scale (about 51,000 employees across roughly 30 countries), broad scope—from strategy to operation—and emphasis on practical outcomes that help clients stay competitive. The group’s goal is to put digital to work for its clients in a way that creates a positive, more productive future for all stakeholders.

Company size
10,001+
Company stage
IPO
Headquarters
Paris, France
Founded
1968

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