Senior Product Security Engineer – Taiwan

Obsidian Security is a global leader in cyber security protecting the SaaS and non-human identity layer modern enterprises run on from Salesforce and Snowflake to the AI agents now deployed inside them. The Obsidian Security platform gives unified visibility into every human and machine identity app and integration across their SaaS estate detects identity-based and supply chain attacks in real time and enforces least-privilege access before its exploited. Trusted by major Fortune 500 companies T-Mobile Workday Snowflake and S&P Global Obsidian ranked No. 95 on the 2025 Deloitte Technology Fast 500 growing nearly 1000% from helping CISOs turn an unmonitored attack surface into one they can govern with confidence. Obsidian has also been recognized by Forbes as Americas Best Startup Employers in 2026.

In August 2026 Obsidian raised $85 million in Series D financing led by Crescent Cove Advisors with participation from existing investors including Greylock Partners Menlo Ventures Norwest Venture Partners IVP Wing Ventures and GV pushing Obsidians valuation to $1.1 billion crossing into unicorn status. Obsidian is using the funding to deepen its R&D in agentic AI security and extend its platform as the standard for governing what AI agents can access and do inside third-party applications.

With global momentum a growing partner ecosystem including SentinelOne Databricks and Google Cloud and fresh capital from its Series D behind it Obsidian is scaling rapidly toward long-term growth and IPO readiness.

Senior Product Security Engineer Taiwan

About the Role: Obsidian Security is looking for a Senior Product Security Engineer to join our growing engineering organization in this role you will strengthen the security of Obsidians products software supply chain development pipelines and cloud infrastructure. You will work across the complete product lifecyclefrom architecture and implementation through deployment and production operationsto identify security risks and build practical scalable solutions. This is a hands-on engineering role requiring deep product security knowledge and strong software development skills. You will lead vulnerability and CVE remediation improve security controls within CI/CD pipelines conduct product security reviews and develop security features for both application and infrastructure platforms. You will collaborate closely with Product Engineering Platform Engineering SRE Security Research and Infrastructure teams across Taiwan the US the UK and Australia.

What Youll Do:

• Perform security architecture and design reviews for new products services APIs data pipelines and infrastructure components.
• Identify security risks early in the development lifecycle and help engineering teams design practical mitigations.
• Lead the end-to-end CVE management process including exposure analysis risk assessment prioritization remediation testing deployment and validation.
• Evaluate the real-world exploitability and customer impact of vulnerabilities rather than relying exclusively on severity scores.
• Partner with product platform infrastructure and SRE teams to safely patch vulnerable application and infrastructure dependencies.
• Improve patch reliability through automated regression testing staged rollouts compatibility validation rollback mechanisms and post-deployment monitoring.
• Strengthen CI/CD pipelines with automated security controls including dependency scanning static analysis container scanning infrastructure-as-code scanning secrets detection and policy enforcement.
• Develop and maintain software supply chain security controls covering source code open-source dependencies build systems artifacts containers and deployment workflows.
• Design and build security features for Obsidians products backend services APIs and cloud infrastructure.
• Develop reusable security libraries services automation policies and developer tools.
• Conduct threat modeling for product capabilities and identify risks related to authentication authorization data access tenant isolation secrets APIs and cloud infrastructure.
• Review application code and infrastructure configurations for security vulnerabilities and design weaknesses.
• Partner with engineering teams to improve secure coding practices and resolve complex security findings.
• Investigate product and infrastructure security incidents determine root causes and lead corrective engineering work.
• Define security requirements standards metrics and release criteria for production services.
• Improve visibility into vulnerability exposure remediation status security-control coverage and residual risk.
• Mentor engineers on product security secure architecture vulnerability remediation and software supply chain security.

What Were Looking For:

• Significant experience in product security application security security engineering cloud security or a closely related discipline.
• Deep knowledge of secure software development and common application security risks including authentication flaws authorization issues injection vulnerabilities insecure deserialization secrets exposure and data leakage.
• Strong hands-on software engineering skills in one or more languages such as Python Go Java Kotlin TypeScript or a comparable language.
• Experience securing cloud-native SaaS products distributed systems APIs microservices and data-processing platforms.
• Practical experience managing vulnerabilities and CVEs across application dependencies containers operating systems cloud services and infrastructure components.
• Ability to assess vulnerability exploitability exposure business impact remediation options and deployment risk.
• Experience implementing security controls in CI/CD and software development workflows.
• Familiarity with application security testing technologies such as SAST DAST software composition analysis container scanning secrets detection and infrastructure-as-code scanning.
• Strong understanding of cloud security containers Kubernetes infrastructure as code identity and access management networking encryption and secrets management.
• Experience conducting architecture reviews threat modeling secure code reviews and security testing.
• Ability to build security automation and product capabilitiesnot only identify or report security issues.
• Strong troubleshooting skills across product pipeline dependency container and infrastructure layers.
• Ability to communicate security risks clearly and help engineering teams make informed practical decisions.
• Strong written and verbal communication skills in English.
• Ability to collaborate effectively across regions time zones functions and cultures. ## Nice to Have
• Experience building cybersecurity identity security SaaS security or enterprise security products.
• Experience securing large-scale data ingestion stream-processing or batch-processing pipelines.
• Experience with software supply chain security SBOM management artifact signing provenance and dependency governance.
• Familiarity with security standards and frameworks such as OWASP CWE CVSS EPSS NIST SSDF or SLSA.
• Experience building policy-as-code automated remediation security guardrails or developer security tooling.
• Experience with penetration testing vulnerability research or responsible vulnerability disclosure.
• Knowledge of multi-tenant SaaS security tenant isolation data privacy and enterprise access controls.
• Experience supporting security incident response and post-incident remediation.
• Experience working with globally distributed engineering teams.
• Mandarin proficiency.

What Success Looks Like:

• Product security risks are identified and addressed early in the engineering lifecycle.
• CVEs are assessed and remediated through a timely risk-based and measurable process.
• Security patches are released safely with effective testing staged deployment rollback and production validation.
• CI/CD pipelines provide meaningful automated security controls without unnecessarily slowing engineering delivery.
• Product and infrastructure teams have clear security standards reusable tools and practical guidance.
• Security features and platform controls measurably improve the protection of Obsidians products and customers.
• Recurring security work is automated and engineering teams increasingly incorporate security into their everyday design and development practices.

Employee Benefits:

Our competitive benefits packages are designed to support our employees well-being both at work and at home. Our US based employees enjoy:

• Competitive compensation with equity and 401k
• Comprehensive healthcare with dental and vision coverage
• Flexible paid time off and paid holiday time off
• 12 weeks of new parent or family leave
• Personal and professional development resources

For more details on our US benefits or for information on our international benefits please see here.