Shape application security remotely in Canada through Type Script, Go, and tenant isolation for a platform serving hundreds of enterprises.
As the first dedicated security hire, you will own application security end to end and report to the VP of Engineering. This Lead-level role combines backend engineering with threat modeling, authorization design, privacy controls, and distributed systems security. You will influence products early while shipping production fixes yourself.
Key Responsibilities: Own application security across every product team
Read and write production Type Script and Go
Threat model products and major redesigns
Design sub-tenant access controls for enterprise customers
Improve rate limiting and abuse detection
Requirements: Six or more years in security engineering
Backend software engineering experience with production systems
Experience securing multi-tenant platforms across clouds or regions
Early security hire experience at Saa S or data infrastructure companies
Staff or Lead level reached through promotions
Lead secure backend development through tenant isolation, authorization, threat modeling, and hands-on Type Script and Go engineering.
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📌 Lead Application Security Engineer Toronto (Canada)
🏢 The French Sourcer
📍 Canada