TypeScript architecture and API design define this senior Toronto position, with hybrid attendance four times weekly near Union Station. Build scalable applications.
This Senior TypeScript Developer role requires 10+ years of professional software development experience. You will work across front-end and back-end applications in financial services. The focus includes distributed systems, microservices, PostgreSQL, performance optimization, and mentoring developers.
Key Responsibilities: Design robust TypeScript applications across front-end and back-end systems
Architect scalable solutions and make technical decisions
Optimize application performance and identify bottlenecks
Review code and provide constructive feedback




Mentor junior and mid-level developers
Requirements: 10+ years of professional software development experience
5+ years of production TypeScript experience
Distributed architectures and microservices experience
Expert API design, RESTful APIs, or GraphQL knowledge
Robust PostgreSQL, Git, and testing framework proficiency
Apply senior TypeScript development expertise to distributed architectures, API design, PostgreSQL, and scalable applications in Toronto's financial services sector.

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📌 Senior TypeScript Architect Developer (Ontario)
🏢 S.I. Systems
📍 Ontario