Sr Back End Java Developer
$90 - $100 per hourTemporary
Hays
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.
Vacancy posted 29 days ago
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