Staff Enterprise Security Engineer

Obsidian Security is the leading SaaS security platform, trusted by global enterprises like Snowflake, T-Mobile, and Algolia. We protect 200+ organizations across North America, Europe, the Middle East, Southeast Asia, Australia, and New Zealand, including many of the world’s largest Fortune 1000 and Global 2000 companies. Founded in 2017 and backed by top investors like Greylock, Obsidian was built to close a critical gap: securing SaaS apps where business happens—Microsoft 365, Salesforce, and hundreds more. The company does this by offering a complete SaaS security platform to reduce risk, detect and respond to threats, and prevent breaches at the source. Obsidian was built by leaders who redefined endpoint and identity security at CrowdStrike, Okta, Cylance, and Carbon Black. Now, they’re transforming how SaaS is secured. With AI driving rapid SaaS growth and complexity, agentic AI tools gain privileged access to sensitive data through integrations, creating new risks most security tools miss. Obsidian uniquely detects anomalous OAuth token activity and manages integration risks. Major announcements are on the horizon. Recognizing that SaaS security needs to evolve, Obsidian enables growing organizations to start with a lightweight, prevention-focused browser extension and expand coverage over time. With global momentum, a growing partner ecosystem including SentinelOne, Databricks, and Google Cloud, and a major fundraise ahead, Obsidian is scaling rapidly toward long-term growth and IPO readiness. Staff Enterprise Security Engineer Overview We are seeking a highly technical, hands-on security leader to advance and scale our enterprise security program. This role will design, implement, and operate security solutions across Obsidian’s global corporate environment, driving automation, maturity, and integration of security and regulatory controls. Reporting to the Head of Security, you will work cross-functionally with Engineering, Product, IT, GRC, and Business functions, and play a key role in strengthening the security posture in a fast-growing, cloud-native startup. Key Responsibilities Architect, implement, and operate enterprise security systems and tooling (EDR, SIEM, SaaS security, CNAPP, MDM, etc.) Secure and automate IT environments (Google Workspace, M365, Salesforce, Slack, etc.) Design and oversee security controls for AI systems Strengthen IAM/PAM, enforce least privilege, and implement zero-trust principles Build detection, response, and automation workflows for incidents Lead vulnerability management, access reviews, and red teaming support Improve security documentation, playbooks, and operational processes Support GRC efforts (SOC 2, ISO 27001, audits, third-party risk, security reviews) Drive security awareness and overall posture maturity Requirements 6+ years in security engineering/operations. Level commensurate with experience Strong experience across domains: EDR, SIEM, IAM/PAM, network & endpoint security, posture management, SOAR Experience with modern SaaS/cloud environments Scripting/automation skills (e.g., Python preferred) Ability to collaborate cross-functionally and communicate security practices effectively Ownership mindset, strong judgment, and ability to thrive in a fast-paced startup What We Offer High-impact role in a fast-growing cybersecurity company Collaborative, mission-driven culture Opportunities for growth, research, and conference participation Competitive compensation, equity, and benefits 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