Senior Product Security Engineer I

📋 Description Provide holistic assessments of security across infrastructure, applications, people, and processes. Collaborate with PMs, designers, and engineers to threat model and architect secure systems. Review source code against secure coding best practices and contribute security requirements. Drive design and implementation of security services and tools for secure defaults. Promote security remediations in CI/CD by building tools (e.g., Semgrep). Help build a platform that keeps Halcyon Labs development safe, easy, and low-risk. 🎯 Requirements Strong communication and stakeholder management; translate risks to product teams. Hands-on secure code reviews and threat modeling. Experience coding in Python, JavaScript, and PHP; write tests with coverage. Knowledge of virtualization, containerization, CI/CD; AWS/GCP. Experience with AI security frameworks (MITRE ATLAS/MAESTRO, OWASP Top 10 for LLMs) and AI threat modeling. Proven experience partnering with engineers to tackle security across the stack. 🎁 Benefits Career development: conference reimbursements, training, and LinkedIn Learning access. Well‑being: Employee Assistance Program, local meetups, and flexible time off. Equity compensation, including equity grants and ESPP. Equal‑opportunity employer with an inclusive culture. Opportunity to work in a high‑growth environment with impact. Collaborative, fast‑paced team working on a scalable cloud platform.