Sr Backend Developer

Role Senior Backend Developer Length 1 year contract (strong potential for extension) Rate $90-$100/hr INC Location Downtown Toronto (1 day onsite)

Your New Company

Join a high-performing digital engineering team within a leading, enterprise-scale organization focused on building modern, scalable platforms. This team operates in a fast-paced environment, driving innovation through microservices and distributed architecture to support millions of users across digital products.

Your New Role

As a Senior Backend Developer, you will play a critical hands-on role in designing, building, and maintaining scalable backend systems and APIs. You will contribute directly to the development of microservices within a distributed architecture, while also supporting ongoing enhancements and maintenance of existing systems.

This is a highly technical, coding-heavy role requiring strong ownership and deep backend expertise.

Key Responsibilities:

• Design, develop, and maintain scalable backend services using Java and Kotlin
• Build and optimize APIs within a microservices architecture
• Drive system design and contribute to architectural decisions across distributed systems
• Write high-quality, production-ready code with strong testing practices
• Maintain and enhance existing backend services and microservices
• Work within event-driven architectures supporting real-time systems
• Collaborate closely with cross-functional engineering teams

What You’ll Need to Succeed

• 10+ years of backend development experience , with a strong focus on building scalable systems
• Proven senior-level experience as a hands-on Backend Developer (not just design/lead)
• Strong expertise in Java and Kotlin
• Demonstrated experience building scalable APIs and distributed systems
• Deep experience with microservices architecture
• Strong hands-on experience with Spring / Spring Boot
• Solid knowledge of SQL and relational databases
• Experience working with event-driven architectures
• Strong system design capabilities and ability to influence architecture
• Experience with unit testing and development testing practices
• Proven experience maintaining and evolving existing production microservices

Nice-to-Have:

• Experience with Google Cloud Platform (GCP)

What You’ll Get in Return

• Opportunity to work on large-scale, high-impact backend platforms
• Exposure to modern engineering practices across distributed systems
• A highly collaborative, engineering-driven team environment
• Competitive compensation aligned to senior-level market rates
• Flexible hybrid working model

What You Need to Do Now

If you’re a true senior-level backend developer with strong expertise in Java, Kotlin, and microservices, apply directly or reach out for a confidential discussion.