Senior Fullstack Architect: Modernization & Microservices

Sunstice; Boulogne-Billancourt; Sur place; EUR 85 000 - 120 000; Temps partiel

Résumé du poste

Sunstice is undertaking a major transformation of its applications to improve scalability, maintainability, and software quality. We are seeking a Senior Fullstack Software Architect to join our team on a 12-month freelance contract (minimum) and contribute to key modernization projects.

You will join an agile team focused on reducing technical debt, evolving software architecture, and modernizing frontend applications. You will play an active, hands-on role across the full development lifecycle.

Qualifications

• At least 8 years of professional software development experience.
• Proven experience delivering application modernization, migration, or large-scale refactoring projects.
• Strong expertise in Java and microservices-based architectures.
• Hands-on experience migrating frontend applications from Vanilla JavaScript to React.
• Solid understanding of modern software engineering practices, including TDD, CI/CD, and code reviews.

Responsabilités

• Analyze and assess the existing technical debt, identifying opportunities for improvement.
• Refactor and decompose complex application modules.
• Drive the migration from a monolithic application to a microservices architecture.
• Contribute to the migration of the frontend from Vanilla JavaScript to React.
• Design and implement deployment pipelines and continuous integration practices.
• Participate in all phases of software development, including technical analysis, design, implementation, automated testing, code reviews, and continuous improvement.
• Collaborate closely with developers, architects, and product stakeholders to deliver scalable and maintainable solutions.
• Help define technical solutions that address architectural, performance, and business challenges.

Connaissances

Java

Spring Boot

React

Vanilla JavaScript

Microservices

TDD

CI/CD

Docker

GitHub

Code reviews

Outils

Docker

GitHub

Description du poste

Sunstice is undertaking a major transformation of its applications to improve scalability, maintainability, and software quality. We are seeking a Senior Fullstack Software Architect to join our team on a 12-month freelance contract (minimum) and contribute to key modernization projects.

You will join an agile team focused on reducing technical debt, evolving software architecture, and modernizing frontend applications. You will play an active, hands-on role across the full development lifecycle.