Lead Java and Spring Boot modernization in Downtown Toronto, working hybrid with four onsite days weekly on a six-month contract. Build resilient services. This Senior Full Stack Engineer role focuses approximately 80% on backend development and 20% on React enhancements. You will modernize a mission-critical Public Markets platform by decomposing its monolithic application into cloud-native microservices. The work includes distributed systems, AWS deployment, architecture decisions, and collaboration with Capital Markets stakeholders. Key Responsibilities:

Refactor monolithic applications into microservices architectures Design and maintain Java Spring Boot backend services Shape service boundaries and technical design decisions Deploy cloud-native applications in AWS Ensure systems remain secure, scalable, and performant Requirements:

10+ years of enterprise Java development experience Advanced Spring Boot expertise Proven microservices architecture refactoring experience Distributed high-performance systems development experience Robust analytical, communication, and collaboration skills Apply senior Java, Spring Boot, microservices, and distributed systems expertise to modernize a Public Markets platform.

📌 Senior Java Microservices Engineer (Toronto)
🏢 Collabera
📍 Toronto