harmonic-security-inc - Senior Software Engineer - Security
Requirements
• 6+ years of hands-on software engineering experience, with deep specialization in security architecture rather than general backend development • Proven track record designing and personally implementing platform-level security controls in production - OAuth/OIDC/SAML, encryption, secrets and key management, multi-tenant isolation • Strong grounding in threat modeling and secure-by-design principles, applied to real architectural decisions rather than theoretical frameworks • Comfort setting technical standards that other engineers are expected to follow, with the communication skill to bring people along rather than dictate from a distance • Experience with cloud security fundamentals (AWS, GCP, or Azure) - IAM, network security, container and Kubernetes security • A track record of shipping secure, reliable, production-grade code, not just reviewing or auditing someone else's • YOU MIGHT BE A FIT IF YOU • Have built or hardened platform-level security in a SaaS company that faces serious enterprise scrutiny (SOC 2, ISO 27001, customer security questionnaires, or similar) • Would rather build the fix into the architecture than find the next hole in someone else's code • Enjoy being the go-to authority on a topic and setting the standard, rather than gatekeeping other people's work • Are comfortable being the first specialist in this seat, inheriting a solid foundation and having the autonomy - and responsibility - to take it further • Understand not just how to build secure systems, but why specific architectural decisions matter for real attackers, not hypothetical ones
Responsibilities
• Take formal ownership of Harmonic's platform security architecture - authentication and authorization, secrets and key management, encryption at rest and in transit, and multi-tenant data isolation - and evolve it beyond what a generalist engineering team has had the focus to do • Write production code that directly hardens and extends these patterns in our core platform, not just documentation describing them • Set security engineering standards for the wider engineering team, and have the mandate to enforce them - this isn't advisory • Manage your own backlog of platform security improvements, prioritized independently of the product roadmap • Run threat modeling and architecture reviews on major new systems and integrations before they ship, so security is designed in rather than retrofitted • Partner directly with engineering leads to embed the right patterns at design time, and support them in meeting the standards you set • Keep our own security posture ahead of what our most demanding enterprise customers and their security teams expect from us • Stay current on the threat landscape relevant to AI agent security, sensitive data handling, and multi-tenant SaaS platforms
Benefits
• This isn't just a job - it's a chance to help define a category. We're building at the intersection of AI and security, carving out an emerging market where the rules haven't been written yet, and the people who join now will write them. • We believe today's talent is tomorrow's success, and we're committed to creating an environment where you can do the best work of your life. • Recognized momentum - We made the Rising in Cyber 2026 list, a signal that the market is taking notice • Rare market opportunity - Join early in a category-defining company at the convergence of AI and security, where your work directly shapes how enterprises tackle one of the biggest unsolved problems in tech • Competitive pay and meaningful equity - A real stake in Harmonic's success, not a token gesture • Comprehensive benefits - 401K, pension plan, generous PTO, and flexible hybrid work • A small, high-trust team that values transparency, creativity, and continuous learning - no politics, no bureaucracy • Thoughtful leadership - that cares deeply about your growth, not just your output • Annual global off-sites - past trips include Lisbon, Portugal and Nashville, TN • Real ownership - you'll shape the platform, the culture, and the direction of the company from day one • HARMONIC'S CORE VALUES • 🌱 Flourish in the Unknown • We embrace new, unfamiliar situations that require initiative and rapid decision-making. We orient ourselves quickly and deliver results with minimal guidance. • We raise our hands, take on challenges, and assist others whenever possible. We hunger for opportunities to learn and do more. • 🤝 Perfect Harmony • We support one another to create cohesion and unity. We collaborate openly, share feedback honestly, and help everyone produce their best work
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