Full-time

Senior API Software Developer Contract Role

Posted by Source Code • toronto, on, Canada

📍 toronto, on 🕒 May 26, 2026

About the Role

Elevate your career as a Senior Software Developer specializing in API at an innovative organization. This contract role focuses on building secure, efficient REST APIs using Java and Spring Boot.

As a Senior API Software Developer, you will leverage over 8 years of experience to create and utilize APIs. Your responsibilities include designing RESTful specifications, optimizing microservices, and ensuring high code reliability with comprehensive testing using tools like JUnit and Mockito. You'll also mentor junior developers and participate actively in code reviews.

Key Responsibilities: • Develop detailed specifications for RESTful API endpoints • Build secure APIs adhering to best practices • Create clean, scalable microservices • Optimize database schemas for API data storage • Mentor junior developers through feedback and reviews

Requirements: • 8+ years as a Senior API Software Developer • Expertise in design and implementation of REST APIs • Strong SQL ...

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