Senior Full Stack Java / Angular Developer - Freelance

Project overview

Context

As part of a strategic information systems modernization program, a major player in interbank payment infrastructure is looking for an experienced Full Stack Java / Angular Developer.

The objective is to redevelop a critical banking flow simulation platform, used for functional testing, acceptance, and validation of interbank exchanges.

The project involves replacing a legacy architecture with a modern, modular, secure, and scalable solution, based on REST APIs, a PostgreSQL database, and a PWA web interface.

The consultant will work in close partnership with the Product Owner, from design to production.

Missions

Backend Development

Frontend Development

DevOps, Quality, and Security

Technical Environment

Working Conditions

• Design and develop backend services in Java / Spring Boot.
• Develop the flow simulation and scheduling engine.
• Design and expose documented REST APIs (Swagger / OpenAPI).
• Model and optimize PostgreSQL databases.
• Develop exchange connectors: REST, SOAP, SFTP, MQ/JMS.
• Participate in the migration of existing components.
• Design a modern interface with Angular / TypeScript / Angular Material.
• Develop a Progressive Web Application (PWA).
• Create UX/UI mockups and functional prototypes.
• Ensure an intuitive and high-performance user experience.
• Participate in CI/CD industrialization (GitLab CI).
• Containerize applications with Docker.
• Implement quality and security controls (SonarQube, Fortify).
• Develop unit and integration tests with a coverage target of ≥ 80%.
• Produce technical documentation and deployment guides.
• Utilize generative AI tools (Copilot, ChatGPT) to accelerate development, testing, and prototyping while respecting security requirements.
• Backend: Java, Spring Boot, Python, PostgreSQL, SQL, REST APIs, Swagger/OpenAPI, microservices.
• Frontend: Angular, Angular Material, TypeScript, PWA, UX/UI.
• DevOps: GitLab CI/CD, Docker, SonarQube, Fortify, Ansible, Terraform.
• Middleware & protocols: Kafka, IBM MQ, JMS, SOAP, SFTP, XML/XSD, JSON, ISO 20022.
• Tools: Jira, Confluence, Xray, GitHub Copilot, ChatGPT.
• Location: La Défense (92)
• Duration: Estimated 230 days
• Status: Freelance / Consultant
• Start Date: To be defined
• Seniority: Confirmed / Senior

Project details

• Start: flexible
• Remote: hybrid
• Location: Paris, France, FR
• Languages: French