119 security researcher jobs at 62 companies in Hercules, CA
2w
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Security Researcher
San Francisco or Israel
OnsiteFull Time
8+ YOE8+ years in security research or applied security engineering, startup/0→1 experience, research-to-product track record, strong programming (Python/Go/TypeScript), LLM fluency, experiment and benchmark design, and US or Israel work authorization.
Python, Go, TypeScript, LLMs, AWS, GCP
2mo
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Senior Security Researcher
Santa Clara, California, United States
$140k-$226k/yr OnsiteFull Time
3+ YOEBachelor's degree or equivalent experience, 3+ years in offensive security or vulnerability research, experience with reverse engineering/fuzzing/exploit development, familiarity with penetration testing, strong OS/network/application security knowledge.
Large Language Models (LLMs), LLMs, Reinforcement Learning, RLHF, Supervised Fine-Tuning (SFT), AI agents, fuzzers
3mo
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Security Researcher, Agentic AI Threats
San Francisco, California, United States
$293k-$405k/yr HybridFull Time
Strong security, systems, and software engineering skills; cloud, OS, containers, and CI/CD experience; ability to design security controls and run evaluations; collaborate with stakeholders.
Cloud, Containers, CI/CD, Operating Systems, Security Tools, Penetration Testing
1mo
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Firmware Security Researcher, SEAR
Cupertino, California, United States
OnsiteFull Time
Research and secure firmware and constrained compute environments, collaborate across hardware/software/privacy/design teams, and contribute to system security for Apple products.
1w
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Security Researcher (Detection Systems)
Sunnyvale, California, United States
$150k-$250k/yr OnsiteFull Time
5+ YOE5+ years building large-scale threat analysis or detection solutions, or a relevant Ph.D.; expertise in threat hunting, malware, vulnerability analysis, reverse engineering, or offensive security; strong Python proficiency.
Python, C, C++, Rust, Go, MITRE ATT&CK, EDR, XDR, SOC, IDS, IPS, LLMs
5d
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Staff+ Researcher, Cybersecurity Products
San Francisco, California, United States
$405k-$485k/yr HybridFull Time
7+ YOEDeep cybersecurity expertise, experience building AI-powered security tools, rigorous evaluation skills, clear technical communication, and 7+ years in security research, engineering, or a related field.
GPT-3, Circuit-Based Interpretability, Multimodal Neurons, Scaling Laws, AI & Compute, Concrete Problems in AI Safety, Learning from Human Preferences
3d
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Standards Researcher
San Francisco, California, United States
$140k-$200k/yr OnsiteFull Time
Security research or standards experience; ability to read NIST, ICD 705, and vendor documentation, synthesize primary sources, and write clearly and precisely under editorial pressure.
NIST, ICD 705
2mo
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Applied Researcher 2/ Senior Applied Researcher
Redmond or Mountain View or New York
$102k-$261k/yr HybridFull Time
1+ YOEMaster's (1+ yr) or Bachelor's (2+ yrs) in a relevant field or equivalent; ability to pass Microsoft security screening; research experience with LLMs, CodeLLM or AI IDE preferred; experience publishing and running large-scale ML experiments.
GitHub Copilot, Microsoft VS Code, Microsoft Visual Studio, Copilot CLI, Copilot Code Review, LLM, CodeLLM, RAG, Code agent, AI IDE
3mo
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Sr. Threat Researcher
Sunnyvale, California, United States
$170k-$196k/yr OnsiteFull Time
5+ YOE5+ years in threat research or related field; strong MITRE ATT&CK knowledge; experience with security telemetry and threat hunting; excellent communication and collaboration.
MITRE ATT&CK, Security Telemetry, Detection Rules, Analytics Queries
5d
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Senior Product Quantitative Researcher, Cloud Security
Seattle or Sunnyvale
$159k-$230k/yr OnsiteFull Time
6+ YOEBachelor's degree or equivalent, 6 years of product research experience, programming for data manipulation and statistics, and SQL. Preferred: advanced degree, UX research, machine learning, cloud data, and ETL experience.
Python, R, MATLAB, C++, Java, Go, SQL, Google Cloud Platform, BigQuery
3mo
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Laser Postdoctoral Researcher - Advanced Photon Technologies
Livermore, California, United States
$123k/yr OnsiteFull Time
0+ YOEPhD in laser physics or related field; experience with high-energy solid-state lasers, ultrafast lasers, and experimental laser systems; ability to work in multi-disciplinary team; US citizenship for security clearance.
Zemax, Code V, OSLO, FRED, LightTools, ASAP, COMSOL, ANSYS, LabVIEW, Python, MATLAB
2w
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Applied AI/ML Researcher - Vice President
Palo Alto, California, United States
$164k-$260k/yr OnsiteFull Time
5+ YOEAdvanced degree or equivalent,5+ years in software engineering or applied AI/ML research,proficiency in Python,cloud platforms (AWS/Azure/GCP),containers/Kubernetes,CI/CD,GenAI and secure/compliant deployments.
Python, AWS, Azure, GCP, Kubernetes, CI/CD
6d
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Senior/Principal R&D Cybersecurity - Formal Verification Researcher, Onsite
Livermore, California, United States
$140k-$281k/yr OnsiteFull Time
5+ YOEBachelor's degree in a relevant discipline plus 5 years of directly relevant experience, or equivalent education and experience; ability to obtain and maintain a U.S. DOE Q-level security clearance and conduct independent R&D.
Haskell, OCaml, Rocq, Python, C, Rust, Verilog, VHDL, NuSMV, TLA, assembly languages, high-performance computing platforms
1mo
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Security Engineer (Corporate IT)
Berkeley or London or United States
$346k-$930k/yr OnsiteFull Time
Build and own corporate IT security for a distributed research org; hands-on experience with endpoint management, IAM/Zero-Trust, email security, compliance (SOC 2/ISO 27001), and translating security requirements for researchers. Bachelor's degree or equivalent required.
MDM/EDR, CI/CD, Zero-Trust, multi-cloud, SOC 2, ISO 27001
3w
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Security Research Engineer, AI Safety and Security Engineering
Santa Clara or North Carolina or Tennessee or New York or California or Florida
$152k-$242k/yr HybridFull Time
5+ YOE5+ years security research or software engineering experience; hands-on vulnerability research, fuzzing or program analysis in C, C++, or Python; strong judgment on fix correctness and revalidation.
C, C++, Python, LLM
3w
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Security Research Engineer, AI Safety and Security Engineering
Santa Clara or North Carolina or New York or Tennessee or Florida or California
$152k-$242k/yr HybridFull Time
5+ YOE5+ years security research or software engineering experience, hands-on vulnerability research/fuzzing/program analysis, strong C/C++/Python skills, rigor in patch correctness, and comfort with AI-assisted workflows.
C, C++, Python, fuzzers, static analyzers, symbolic-execution tools, AI-assisted tools, LLM
1mo
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Staff II - Application Security Engineer
Atlanta or Mountain View
$220k-$270k/yr HybridFull Time
12+ YOE12+ years application security experience; expertise in threat modeling, secure design and architecture for cloud-native systems; proficiency reading Java and C++; experience with code review, vulnerability research, and maturing security programs.
Java, C++, CodeQL
2mo
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Staff Product Security Engineer
San Francisco, California, United States
$180k-$248k/yr HybridFull Time
7+ YOE7+ years in information security with deep application/offensive research or AI/ML security, hands-on assessment of LLM-integrated and agentic systems, proficiency in multiple programming languages, threat modeling, manual code review, and strong communication.
Python, Go, Java, TypeScript, C, C++, SAST, DAST, SCA, fuzzing, OIDC, OAuth 2.0, SAML, CI/CD, LLM, MCP
1mo
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Product Security Analyst
Boston or Austin or Washington or Seattle or San Francisco
$120k-$155k/yr RemoteFull Time
3+ YOE3+ years security testing/vulnerability research on web/mobile apps, strong OWASP Top 10 knowledge, experience with Burp Suite and CVSS, ability to reproduce/validate findings and communicate technical impact in English.
Burp Suite, Common Vulnerability Scoring System (CVSS)
2mo
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Head of Policy & Security Research Lab
San Francisco or Washington
$198k-$247k/yr OnsiteFull Time
6+ YOE6+ years of relevant experience; leadership in AI safety policy, research, and publications; strong written/verbal communication; team-building and mentoring; extensive exposure to frontier risk evaluations and government/led partnerships.
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