Security Researcher
PI Security LLC
About Us We are a well-funded security startup in San Francisco, founded by the teams who led Microsoft's vulnerability mitigation efforts and Tesla's offensive research. (If still in stealth, keep this line as-is; if launched, name Pi and use the standard boilerplate.) Lead Security Researcher Location: San Francisco, CA or Israel Type: Full-time, onsite About Us We are a well-funded security startup in San Francisco, founded by the teams who led Microsoft's vulnerability mitigation efforts and Tesla's offensive research. (If still in stealth, keep this line as-is; if launched, name Pi and use the standard boilerplate.) We're building a platform that changes how companies handle security vulnerabilities - not by finding more of them, but by understanding them deeply enough to fix them at the root and keep whole classes from coming back. The hard problems behind that - what to detect, how to prove a finding is real, how to remediate the way a senior engineer would - are research problems. That's where you come in. The Role You will lead security research at the company. This is not a bug-hunting role. Your job is to invent the novel approaches that become product capabilities: new ways to detect, triage, and remediate vulnerabilities using LLMs and program analysis, proven on real data before customers ever see them. You own the path from idea to shipped capability - forming the hypothesis, building the proof of concept, measuring whether it actually works, and partnering with engineering until it's in the product. You also own the quality bar: the benchmarks and evaluations that decide whether what we ship is good enough to put in front of customers. You'll set the research agenda, not just execute one. As the team grows, you'll shape how research works here. What You’ll Own The research agenda. Identify where novel approaches can meaningfully beat the state of the art in vulnerability detection, triage, and remediation - and decide what we pursue and what we kill. No one hands you a backlog. Novel approaches, proven and shipped. Build proofs of concept for new detection and remediation techniques, validate them against real-world code and data, and carry the winners through to production with engineering. You're accountable for ideas becoming product, not staying research. The quality bar. Design the datasets, benchmarks, and evaluation pipelines that measure precision, coverage, and false-positive rates. Nothing reaches customers past a bar you haven't signed off on - and if quality slips, you catch #J-18808-Ljbffr
- ...Security Researcher We believe that software is the foundation of modern civilization - yet vulnerabilities threaten its integrity, security, and resilience. We are on a mission to solve security. depthfirst is building intelligence to detect and remediate critical...SuggestedFull timeWork at office
- ...Cybersecurity Researcher (Remote / SF Bay Area) Are you the kind of person who breaks things to understand them—then builds stronger... ...intersection of AI, agentic systems, and your own deep curiosity for security. About Us We’re a well‑funded AI startup ($25M seed...SuggestedFull timeWork at officeRemote work
$175k - $225k
...Role: Cybersecurity Researcher Location: South Bay Area (On-site or Remote flexibility) Compensation: $175K - $225K + ~0.1% equity... ...by top-tier investors, the startup is building advanced security solutions at the intersection of applied research and product...SuggestedRemote workVisa sponsorshipFlexible hours$295k
About the teamPreparedness is a critical Safety Research team at OpenAI, which is focused on mitigating AI threats to global security that could scale to an extreme level of severity.Our work involves:Measurement. Monitoring and predicting the evolving capabilities of...Suggested- ...behaves exactly as intended while proactively identifying bugs and security vulnerabilities. Our novel foundation model enables scalable,... ...provably correct. About the role Join our team as an AI Researcher and help us push the boundaries of what's possible in logical...SuggestedContract work
$295k
About the TeamPreparedness is a critical Safety Research team at OpenAI, which is focused on mitigating AI threats to global security that could scale to an extreme level of severity.Our work involves:Measurement. Monitoring and predicting the evolving capabilities of frontier...Permanent employmentTemporary work$300 per month
...scientists and engineers from leading institutions across biology, physics, chemistry, and AI. The Role We're hiring our founding Security Operations Engineer to help build and scale our security program from the ground up. This is a hands-on role for a builder who...Full timeWork at office- ...meaningfully improving. Working with live business communication means permissions, redaction, and security are things we have to think about as well. If you want to have your research come into contact with reality, Ando is the place for it. Some concrete research problems...Work from home
$120k - $250k
...Research Engineer London, England, United Kingdom; New York, New York, United States; San Francisco, California, United States; Seattle... ...for experimentation, training, and production inference, with security, observability, and control built in. We serve solo...Work at officeWork from homeFlexible hours2 days per week- ...The AI Foundations team is at the center of bringing our vision for AI at Capital One to life. Our work touches every aspect of the research life cycle, from partnering with academia to building production systems. We work with product, technology and business leaders to...Flexible hours
$150k - $300k
...Join to apply for the Applied Researcher role at Variant Overview Variant is hiring an applied researcher to join our team in San Francisco. We are well-capitalized and focused on code generation with creativity and taste. This role involves designing, training, and evaluating...Full time$150k
...the reliability of LLM apps by haizing them – i.e. rigorously, proactively, and continuously fuzz-testing them. We are looking for Research Engineers to help develop our reliability platform, with a focus on: Data-efficient alignment of evaluation models Dynamic testing...Visa sponsorship- * PhD focus on NLP or Masters with 10 years of industrial NLP research experience* Core contributor to team that has trained a large language model from scratch (10B + parameters, 500B+ tokens)* Numerous publications at ACL, NAACL and EMNLP, Neurips, ICML or ICLR on topics...Full timePart time
- ...performance computing environments like Aurora. Required Qualifications PhD Graduate in AI, Computer Science, or Robotics (Top‑tier research lab background) Deep expertise in Vision‑Language Models (VLM) and Vision‑Language‑Action (VLA) models Hands‑on experience with "...Work at officeLocal area3 days per week
$218.7k - $249.6k
...The AI Foundations team is at the center of bringing our vision for AI at Capital One to life. Our work touches every aspect of the research life cycle, from partnering with Academia to building production systems. We work with product, technology and business leaders to...Full timePart timeLocal areaFlexible hours- ...evals, and data collection pipelines. Engage with partners to understand use cases and observe robots in deployment contexts. Bridge research and operations: translate research advances into deployable systems, and surface real‑world failure modes back to researchers and...
- ...minds in the industry, including the creator of Warudo and Cytoid, a Google Deepmind veteran behind Project Astra, and top-tier AI researchers. As an early member of this team, you will have significant artistic and research freedom to shape what could become the next-...Work at officeVisa sponsorship
$144k - $187k
...establishing a Machine Learning Center of Excellence within the Research & Development team to develop machine learning models that... ...employee benefits, tailored to your location, ensuring your financial security, health, and overall wellbeing. ~ Flexible working...Flexible hours- ...in a true bottoms-up fashion. This means as a quantitative developer, you will work with a growing team comprised of quantitative researchers, software engineers, product managers, designers, and brokerage operations professionals to ideate, prioritize, prototype,...Work at officeVisa sponsorshipFlexible hours
$250k - $350k
...what's possible in LLM post-training. If you love training models, exploring new architectures, running experiments, and turning research insights into products that ship, we'd love to meet you. About Inference.net Inference.net trains and hosts specialized language...Work at office- ...to train models and agents that connect chemistry, biology, mechanism, and clinical risk. We are looking for a machine learning researcher to help define and build the core AI systems behind Axiom: models that learn from human-relevant experimental biology, predict toxicity...
- Tilde Research is a moonshot AI lab advancing mechanistic interpretability, new architectures, and pretraining science. We build foundational understanding of models to advance the frontier of intelligence. About the role: As a ML Researcher, you will develop innovative...
$140k - $250k
...communication bottleneck between humans and technology by decoding thoughts from the brain, entirely non-invasively. We apply deep learning research to large scale EEG datasets collected on affordable hardware to decode images, text, and video initially, and eventually moving to...Work from homeVisa sponsorship$100k - $300k
...About Cogent Security Cogent is an Applied AI Lab building the next generation of AI agents for cybersecurity. AI has fundamentally changed... ...breaches occur. To stay at the cutting edge, we blend frontier research with real-world execution. Alongside our core product work,...- ...anywhere in their environments. Our systems can automatically detect and reason about any physical activity captured on camera, from security incidents (e.g. perimeter intrusion, theft, LPR), to safety monitoring (e.g. PPE detection, injured people), to operational...
- AI Researcher Location: San Francisco About Hum.ai is building planetary superintelligence. Backed by top funds, we’ve raised $10M+ and are now heads down building. Join us at the cutting edge, where we’re scaling generative transformer diffusion models, designing next...Remote work
$175k - $220k
...Senior Security Engineer San Francisco, CA About the Role We are looking for a highly technical Senior Security Engineer who thrives on building security capabilities from the ground up. This role is ideal for someone who enjoys solving complex security challenges...Full timeWork at officeFlexible hours$244k - $292k
...Kikoff: The Fintech Powering Financial Security at Scale Kikoff is a profitable, pre-IPO fintech company on a mission to empower everyone to achieve financial security. With record revenue growth in 2025 and a unicorn valuation, we've built a suite of products that...Local area$165k - $200k
...Security Engineer Merge is the leading provider of agentic tools and customer-facing integrations for frontier LLMs, Fortune 500... ...bounty program end to end: triage, response, remediation, and researcher communication Partner with Engineering to embed secure design...Full timeWork at officeHome office- ...Security Engineer San Francisco, California, United States Security Engineer Overview Thunes Financial Services is hiring a Security Engineer to be the architect of trust for our fintech platform. We are looking for a hybrid specialist who can bridge the gap...
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