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DepthFirst

Autonomous agents audit code for vulnerabilities

Technical Account Manager

Full-Time
No salary listed
Senior
San Francisco, CA, USA
In Person
Solution EngineeringImplementation & Technical Account Management

About the job

Requirements
  • At least 5 years of experience in Technical Account Management, Solutions Engineering, Customer Success Engineering, Sales Engineering, or a similar customer-facing technical role.
  • A strong technical background supporting enterprise software or developer infrastructure products.
  • Experience working with application programming interfaces, cloud platforms such as Amazon Web Services, Google Cloud Platform, or Microsoft Azure, Git, continuous integration and continuous delivery pipelines, and modern software development workflows.
  • Ability to troubleshoot technical issues and communicate effectively with engineers and executive stakeholders.
  • Project management and organizational skills sufficient to manage multiple customer engagements simultaneously.
  • Comfort working in ambiguity and building processes from the ground up.
  • A passion for delivering exceptional customer experiences.
Responsibilities
  • Own the technical success of a portfolio of strategic enterprise customers.
  • Guide customers through onboarding, implementation, integrations, and production deployments.
  • Serve as a trusted advisor to engineering leaders, security teams, and platform organizations.
  • Troubleshoot complex technical issues across cloud infrastructure, application programming interfaces, continuous integration and continuous delivery pipelines, source control systems, and application security tooling.
  • Partner with Solutions Engineering on customer handoffs and expansion opportunities.
  • Collaborate with Product and Engineering to prioritize customer feedback, influence roadmap decisions, and advocate for customer needs.
  • Develop best practices, technical documentation, deployment guides, and enablement resources.
  • Monitor customer health and proactively identify opportunities to increase adoption and value.
  • Lead technical reviews, architecture discussions, and executive business reviews with customers.
  • Help build the systems, playbooks, and processes that will scale the Technical Account Management function.
Desired Qualifications
  • Experience with application security, DevSecOps, vulnerability management, or cloud security.
  • Familiarity with artificial intelligence or large language model products or developer tooling.
  • Experience supporting highly technical enterprise customers.
  • Previous experience at a high-growth startup.
  • Basic scripting experience in Python, Bash, or a similar language.

About the company

DepthFirst builds autonomous agents that understand a company’s code, business logic, and infrastructure end-to-end to surface security weaknesses and propose fixes that are ready to merge. The platform, called General Security Intelligence, uses AI agents to analyze an organization’s codebase and systems, identify vulnerabilities, and suggest actionable patches that can be integrated into the codebase. It stands out from traditional static analysis by delivering more true-positive findings (about 8x higher) and far fewer false positives (roughly 85% fewer), and it shows strong performance on CyberGym benchmarks. Early customers include AngelList, Supabase, Moveworks, Persona, and Lovable. The company aims to speed up secure software development by automatically finding problems and providing ready-to-implement fixes, and it is expanding research, go-to-market efforts, and hiring after a $40 million Series A round in January 2026.

Company Size

51-200

Company Stage

Series B

Total Funding

$140.8M

Headquarters

San Francisco, California

Founded

2024

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Simplify's Take

What believers are saying

  • March 31, 2026 Series B added $80 million, bringing total funding to $120 million.
  • Customers now include ClickUp, Lovable, Supabase, incident.io, Moveworks, and Persona.
  • DepthFirst disclosed 12 FFmpeg zero-days using about $1,000 compute, proving efficient research.

What critics are saying

  • Snyk, Wiz, and GitHub Security Advisory can copy package-firewall features within months.
  • Autonomous remediation mistakes on production code trigger breaches, forcing manual review and slowing sales.
  • One missed headline vulnerability destroys trust and freezes enterprise adoption after 2026.

What makes DepthFirst unique

  • DepthFirst inspects code, business logic, and infrastructure end-to-end, not isolated alerts.
  • Its Dependency Firewall blocks malicious packages before installation across Claude, Codex, and employees.
  • Open Defense Initiative plus FFmpeg, Envoy, and Kata partnerships create proprietary vulnerability data.

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Benefits

  • Health Insurance
  • Vision Insurance
  • Dental Insurance
  • Meal Benefits
  • Company Equity

Growth & Insights and Company News

6 month growth

8%

1 year growth

8%

2 year growth

8%
Business Wire
Jun 1st, 2026
depthfirst launches Dependency Firewall to block malicious open-source packages before installation

San Francisco-based depthfirst has launched Dependency Firewall, a product that reviews and blocks malicious open-source packages before they're installed across a company. The system inspects every package download, regardless of who is installing it, and returns a verdict before installation, allowing approved packages through whilst quarantining suspicious ones and blocking malicious code. The firewall addresses growing security risks as attackers exploit open-source trust by publishing packages that mimic popular libraries. Verizon reported that 48% of data breaches in its 2026 DBIR involved ransomware, with malware attacks surging recently. Dependency Firewall uses depthfirst's agentic defence platform, which previously discovered NGINX Rift, an 18-year-old vulnerability. The company has raised $120 million from investors including Meritech Capital, Accel and Forerunner Ventures.

Business Wire
May 12th, 2026
depthfirst commits $5M in credits to help open source projects find and fix zero-day vulnerabilities

depthfirst, an applied AI security lab, has launched the Open Defense Initiative, committing up to $5 million in platform credits to help open source projects discover and fix vulnerabilities. The programme targets widely deployed infrastructure software where vulnerabilities would have significant downstream impact. The company disclosed it identified 12 previously unknown memory corruption vulnerabilities in FFmpeg using approximately $1,000 in compute, compared to Anthropic's reported $10,000 spend for similar scanning. Some vulnerabilities dated back to 2009, and patches were autonomously generated by depthfirst's platform. The initiative is currently partnering with maintainers of FFmpeg, Envoy and Kata Containers, whilst proactively analysing projects including Linux, OpenSSH and PostgreSQL. depthfirst has raised $120 million from investors including Meritech Capital, Accel and Forerunner Ventures. Maintainers can apply at opendefense.dev.

Business Wire
Apr 1st, 2026
Applied AI Lab depthfirst Announces $80 Million in Series B Funding

depthfirst, an applied AI lab on a mission to secure the world’s software, today announced its $80M Series B round, led by Meritech Capital, with participati...

Forbes
Mar 31st, 2026
Depthfirst raises $120M at $580M valuation to build AI defence against AI hackers

Depthfirst, an AI cybersecurity startup, has raised $80 million at a $580 million valuation, just two months after a $40 million Series A round. The company is developing "General Security Intelligence" to autonomously detect vulnerabilities and defend against malicious AI attacks. Founded in 2024 by former Google Deepmind researcher Andrea Michi, former Databricks security head Qasim Mithani, and ex-Block cybersecurity chief Daniele Perito, Depthfirst builds AI models from scratch using reinforcement learning rather than adapting existing large language models. The company has over 20 customers and claims 300% revenue growth over the past two quarters. Depthfirst is launching its first in-house model this week, targeting security weaknesses in cryptocurrency smart contracts. Meritech Capital led the Series B round, with total funding now exceeding $120 million.

Startup Weekly
Jan 16th, 2026
depthfirst raises $40M Series A to secure software with AI-powered threat detection

depthfirst, an applied AI lab focused on software security, has raised $40 million in a Series A round led by Accel. Alt Capital, BoxGroup, Liquid 2 Ventures, Mantis VC and SV Angel participated, alongside angel investors including Jeff Dean and Kirsten Green. Founded in 2024, depthfirst has developed a General Security Intelligence platform that detects, triages and remediates vulnerabilities across software and infrastructure. The company's AI agents uncover eight times more true-positive vulnerabilities than traditional static analysis tools whilst reducing false positives by 85 per cent. The founding team includes technical leaders from Google DeepMind, Databricks and Faire. The funding will support research and development, go-to-market efforts and hiring across applied research, engineering, product and sales.