About this role
Application Security Engineer at Opendoor. Location: Toronto, Ontario, Canada. Role: identifying vulnerabilities, automating triage, conducting threat-modeling Requirements: 5+ years application security or security-focused software engineering; strong in Python, Go, TypeScript, or Ruby; experience with AppSec tooling (GitHub Advanced Security, Semgrep, HackerOne, Burp); cloud and Kubernetes security experience; practical threat modeling skills. Category: Engineering Seniority: Senior Level Tools: Go, Python, TypeScript, Ruby, Terraform, AWS, GCP, Azure, Kubernetes, Apollo GraphQL, GitHub Advanced Security, CodeQL, Dependabot, Semgrep, HackerOne, Burp Suite, Cloudflare WAF, Claude, OpenAI, MCP, GitHub, Linear, Slack Certifications: oscp, oswe Commitment: Full Time Workplace: Hybrid Languages: English