Principal Staff Software Engineer
Design and develop scalable distributed systems and greenfield microservices platforms using Java 21 and AWS. Provide technical leadership and mentorship to engineers while owning the end-to-end development of AI/ML inference services.
- On-site
- Toronto, ON
- Posted Aug 13, 2026
- Apply by Sep 12, 2026
- 1 position
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Job summary
Staff/Principal Software Engineer (Java) About the Role We are seeking a Staff/Principal Software Engineer with 10+ years of experience building production-grade distributed systems. This is a hands-on Java backend and system design role focused on architecture, scalable microservices, AWS, and greenfield platform development. Key Responsibilities: Design and develop scalable distributed systems and microservices. Hands-on development with Java 21, Spring Boot, REST APIs. Lead system design, architecture, scalability, and technical decisions. Build 0-to-1/greenfield platforms with end-to-end ownership. Develop solutions for AI/ML platforms, feature pipelines, or inference services. Work with AWS across compute, storage, networking, and IAM. Use AI-assisted coding tools such as GitHub Copilot, Claude, Cursor, or Windsurf. Mentor engineers and provide technical leadership. Required Skills: 10+ years software engineering experience. Strong Java 21, Spring Boot, Microservices & System Design. Strong hands-on AWS experience. Experience with distributed systems and cloud-native platforms. AI/ML platform or inference experience. Experience with AI-assisted development tools. Strong architecture, ownership, and mentoring experience. Nice to Have: Databricks Python Edge/CDN: Cloudflare Workers, Lambda@Edge, Fastly, Akamai JWT, OAuth 2.0, PKI, Token Validation Observability, distributed tracing, and platform engineering.
What you’ll do
Design and develop scalable distributed systems and greenfield microservices platforms using Java 21 and AWS. Provide technical leadership and mentorship to engineers while owning the end-to-end development of AI/ML inference services.
Requirements
Requires over 10 years of software engineering experience with strong expertise in Java, Spring Boot, and AWS. Candidates must have a proven track record in system architecture and experience with AI-assisted development tools.
Listed skills
- REST APIsPreferred
- Amazon Web ServicesPreferred
- Spring BootPreferred
- PythonPreferred
Other relevant skills
Identified from the job description. Confirm important requirements above.
- Java 21
- Spring Boot
- Microservices
- System Design
- AWS
- Distributed Systems
- AI/ML Platforms
- Architecture
- Mentoring
- REST APIs
- Cloud-native Platforms
- GitHub Copilot
- Databricks
- Python
- OAuth 2.0
- Observability
Job areas
- Software
- Technology
- Engineering
- Consulting
- Data & Analytics
Additional details
- Minimum experience
- 10+ years
- Apply by
- Sep 12, 2026
- Posting language
- English
- Working hours
- 40 hours per week
- Seniority
- Mid-Senior level
- Application method
- Direct apply is available