94 security researcher jobs at 38 companies in Corralitos, CA
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
4w
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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
3w
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Principal Researcher – Technology & Security-Adjacent Systems
San Jose, California, United States
RemotePart Time, Contract
2+ YOE2+ years research/analytical experience; strong knowledge of technology policy, cybersecurity or semiconductor sectors; familiarity with export controls and trade regulation; ability to interpret technical and policy documents and produce clear written analysis.
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
3d
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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 or Houston
$164k-$260k/yr OnsiteFull Time
5+ YOE5+ years in software engineering or applied AI/ML research, advanced degree or equivalent experience, strong Python skills, experience with cloud platforms, containers/Kubernetes, CI/CD, observability, and secure software practices.
Python, AWS, Azure, GCP, Kubernetes
4w
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Security Research Engineer
Fulton or Ann Arbor or Atlanta or Austin or Boston or Cary or San Jose
$136k-$195k/yr OnsiteFull Time
BS degree, experience in threat or malware research and analysis, scripting with Python, familiarity with Windows/Linux/macOS telemetry, strong communication and critical thinking.
Python, Windows, Linux, macOS
4d
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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
2w
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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
2w
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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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AI-Native Security Agent Engineer
San Jose, California, United States
OnsiteFull Time
3+ YOE3+ years software engineering experience in security, networking or AI; proficiency in Go, Python or TypeScript; hands-on LLM/Agent development experience; strong communication and self-driven mindset.
Go, Python, TypeScript, OpenClaw, Hermes Agent, LLM Guard
1mo
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Security Software Engineer Project Intern (Product Security) - 2026 Start (BS/MS)
San Jose, California, United States
OnsiteInternship
Pursuing a BS/MS in CS or STEM, security engineering knowledge (web, mobile, network, OS, crypto, cloud), coding experience in at least one listed language, and strong debugging/problem-solving skills.
JavaScript, Node JS, Go, Python, Java, C++, Rust, LLM, NLP
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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Senior Security Engineer, AI/ML
Foster City, California, United States
$115k-$140k/yr OnsiteFull Time
6+ YOE6+ years combined software/ML and security research or penetration testing experience; strong Python; experience with Scikit-learn, TensorFlow or PyTorch, LangChain/LlamaIndex, vector DBs (FAISS, Pinecone, Qdrant), cloud (AWS/GCP/Azure), SQL and Pandas.
LangChain, LlamaIndex, AutoGen, CrewAI, FAISS, Pinecone, Qdrant, Python, Scikit-learn, TensorFlow, PyTorch, OpenAI, HuggingFace, MetaGPT, Guardrails.ai, LLM Guard, Tracer, GPT-4, Claude, Mistral, LLaMA, Falcon, SQL, Pandas, AWS, GCP, Azure, MLOps, STRIDE, MITRE ATLAS
2d
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Operations Lead, Security Trailers & Edge Products
San Mateo, California, United States
$165k-$200k/yr OnsiteFull Time
5+ YOE5+ years in operations, logistics, supply chain, or marketplace operations; undergraduate degree in engineering, operations research, or similar quantitative field; experience building scalable systems and processes.
1w
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Director, Research & Development Laboratory – Santa Barbara
Goleta or Santa Barbara or Nevada or Los Alamos or Livermore
$222k-$366k/yr OnsiteFull Time
Mission Support and Test Services: Manages and operates the Nevada National Security Site.
20+ YOEMaster's degree in a relevant STEM field, 20+ years of technical leadership, multidisciplinary organization management, executive communication, valid driver's license, and eligibility for DOE Q clearance.
hardware, software, cyber security
3w
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Early Career W87-1 Weapon R&D Electrical Engineer - Drive Next-Generation National Security Technologies, Onsite
Albuquerque or Livermore
$122k-$238k/yr OnsiteFull Time
Bachelor's in electrical engineering (or equivalent), ability to obtain DOE Q clearance, familiarity with MBSE/CAMEO and electrical design, strong problem-solving and communication skills.
Model-Based Systems Engineering (MBSE), CAMEO
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