Startups · AI

Software Engineer - AI Security Product

Obsidian Security · Palo Alto, California, USA · On-site

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About Obsidian Security

Obsidian Security delivers complete SaaS security—gain control, stop threats, and ensure compliance across all your business apps. Backed by Greylock, Norwest and GV.

About the role

AI is the fastest-moving attack surface in the enterprise. Copilot, ChatGPT Enterprise, Gemini, Claude, and a wave of agentic tools are being wired into corporate SaaS faster than security teams can keep up — with broad OAuth scopes, opaque data flows, and non-human identities acting on behalf of employees. Obsidian sits directly in the path of this shift.

What they're looking for

  • 1–3 years of software engineering experience shipping and owning production backend systems, with proficiency in a modern language (Python, Go, or similar)
  • Experience with — AWS/GCP, containers, CI/CD, observability, and production ownership
  • Hands-on experience with LLM APIs and agentic patterns (tool/function calling, MCP, agent frameworks), or a demonstrated ability to ramp up fast
  • Hands-on experience with a modern data stack (dbt, and a columnar warehouse or query engine such as ClickHouse, Snowflake, BigQuery, or Databricks)
  • Clear communicator across engineers, PMs, and customer security teams
  • Comfortable operating with ambiguity in a fast-moving problem space
More about this role

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 it's 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 2021–2024 — helping CISOs turn an unmonitored attack surface into one they can govern with confidence. Obsidian has also been recognized by Forbes as America's 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 Obsidian's valuation to $1.1 billion, crossing into unicorn status. Obsidian is using the funding to deepen its...

Read the full posting on Obsidian Security's site ↗

Engineering (D2010)

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