Break AI and agentic systems and turn research into automated, repeatable attacks for NodeZero.
Design and execute prompt injection, defense evasion, and tool-use exploitation against AI infrastructure.
Build and extend LLM-powered applications and microservices, focusing on production safety and reliability.
Horizon3 is a cybersecurity company whose NodeZero platform delivers autonomous pentests to find exploitable attack vectors. It’s a fast-growing, fully remote team of engineers and former special ops operators with a culture of respect and ownership.
Craft creative prompts and multi-turn scenarios to stress-test AI guardrails across diverse risk categories.
Discover ways around safety filters and restrictions using jailbreak, evasion, and prompt injection techniques.
Evaluate and score model responses against structured harm taxonomies and severity rubrics.
Handshake AI partners with leading AI research labs to make models safer and more robust. Our red teaming operations help identify vulnerabilities before they reach users, contributing directly to the responsible development of frontier AI systems.
Plan and execute red team operations and adversary simulations focused on cloud environments.
Evaluate security of cloud infrastructure, identity architectures, CI/CD pipelines, and containerized workloads.
Assess detection and response coverage with blue team and detection engineering.
Motive empowers people who run physical operations with tools to make their work safer, more productive, and more profitable. We serve nearly 100,000 customers, from Fortune 500 enterprises to small businesses, and value diversity and inclusion.
Plan and execute realistic adversary simulations using threat intelligence to assess security and detection capabilities.
Hunt for vulnerabilities across AI systems, payment infrastructure, autonomous delivery hardware, and emerging technologies.
Build custom tools, exploits, and payloads tailored to DoorDash's tech stack and partner with Blue Teams.
DoorDash is a technology and logistics company that empowers local economies by enabling door-to-door delivery for consumers, merchants, and Dashers. The company is growing rapidly and constantly changing, with a culture focused on empathy, diversity, and employee well-being.
Design and build security solutions across application security, infrastructure, and AI agentic systems.
Secure integrations, manage secrets, and review public-facing APIs for vulnerabilities.
Develop AI governance standards and security review agents to protect user trust.
Wave builds mobile financial services across Africa, making cash deposits, withdrawals, and payments accessible to millions. With a rapidly growing team in 9 countries and a remote-first culture, Wave fosters autonomy and ownership.
Research and reproduce high-consequence vulnerabilities across enterprise networks, applications, identity systems, and cloud environments.
Turn vulnerability research and attacker tradecraft into safe, repeatable automated attack capabilities.
Validate remediation and collaborate with research, product, and engineering teams.
Horizon3 is a fast-growing remote cybersecurity company that helps organizations proactively find, fix, and verify exploitable attack vectors. Its NodeZero platform delivers autonomous pentests, and the team is a collaborative culture committed to respect, ownership, and results.
Apply your cybersecurity expertise to train next-generation AI systems with real-world input.
Analyze, debug, and resolve software bugs and vulnerabilities across diverse codebases.
Perform security audits, penetration testing, and contribute to backend development.
Our client is a venture-backed AI company developing intelligent systems via human expertise and machine learning. They are rapidly growing with over $40 million in funding and a global network of experts.
Lead red team assessments and adversary emulation for space and mission systems.
Develop attack plans, test cases, and Rules of Engagement with safety boundaries.
Assess Linux, embedded, cloud, and network systems for exploitable weaknesses.
SIXGEN delivers agile, mission-ready cybersecurity solutions for government and critical infrastructure organizations. The company combines innovation and deep technical expertise to uncover vulnerabilities and strengthen operational resilience.
Lead the development and optimization of machine learning models to detect and prevent AI security risks like prompt injection and jailbreaks.
Build reproducible training and evaluation pipelines on Reddit's ML platform, partnering with platform engineers to improve performance and reliability.
Set the technical vision and multi-quarter modeling roadmap, mentoring engineers and establishing best practices for responsible ML development.
Reddit is a community of communities, built on shared interests and authentic conversations, with 100,000+ active communities and 130 million daily active visitors. It is one of the internet's largest sources of information, fostering a culture of openness and trust.
Review existing RL environments for offensive-security and application-security tasks, confirming vulnerabilities are real, reachable, and solvable with provided context.
For patching and exploit-construction tasks, trace or attempt the intended path and verify grading correctly distinguishes genuine fixes from pattern-matching or workarounds.
Flag inconsistent files, missing context, or ambiguity, and write clear justifications for each accept, reject, or flag decision.
idlexperts is idler's quality assurance network of part-time, remote experts who review reinforcement-learning environments before they reach customers. The culture is flexible, async, and self-directed, with experts expected to work a handful of hours per week and deliver clear written judgments.
Deliver Application Security services including assessments, threat modeling, and source code reviews for web, mobile, AI, and thick client applications.
Perform AI/LLM and agentic security assessments, including prompt injection, model bypass, and tool-calling exploitation, mapped to OWASP Top 10 for LLM and Agentic Applications.
Build and extend AI-driven tooling and automation harnesses to improve testing coverage, consistency, and efficiency.
GuidePoint Security provides trusted cybersecurity expertise, solutions, and services to help organizations make better decisions and minimize risk. With over 1,300 employees, it is a rapidly growing, profitable, privately-held value added reseller focused exclusively on information security.
Lead security assessments of AI/ML models, data pipelines, and AI-enabled applications, identifying vulnerabilities such as prompt injection, model inversion, data poisoning, and adversarial inputs.
Partner with Data & Analytics and Engineering to embed security requirements and threat modeling into the AI development lifecycle, from data collection through model deployment.
Build and maintain guardrails, monitoring, and detection controls for AI systems in production, flagging anomalous model behavior and unauthorized data access.
Interra Health is a healthcare technology company that helps providers and patients navigate the prescription journey. It is a fast-growing, mission-driven team of about 100 employees, formed through the merger of DoseSpot, Arrive Health, and pVerify, and focused on reducing friction and improving access to medications.
Perform web, mobile application, and internal penetration tests, source code reviews, and threat analysis.
Support blue teams, research new attack vectors, and stay current with cybersecurity news and trends.
Train QA and Development teams in standard security testing techniques and secure software development.
Insider One is a platform that unifies marketing and customer engagement tools, powered by AI and an integrated Customer Data Platform. The company is a woman-founded, women-led B2B SaaS unicorn with 1,500+ team members from 50+ nationalities across 30+ offices.
Lead Affirm's enterprise AI security review process, evaluating architecture, data flows, and design of AI tools and agentic systems.
Threat model AI/LLM systems for risks like prompt injection, insecure output handling, and data poisoning, and drive remediation.
Build security guardrails, tooling, and policy-as-code to automate AI security and support cross-functional initiatives.
Affirm is a financial technology company that offers clear, predictable point-of-sale installment loans with no hidden fees. The company is remote-first and values transparency, care, and flexibility, with a focus on building a diverse and inclusive team.
Execute penetration testing engagements across web applications, APIs, networks, and cloud environments.
Identify, validate, and document security vulnerabilities with clear proof-of-concepts and remediation guidance.
Collaborate with clients and internal teams through scoping calls, kickoffs, report reviews, and quality assurance.
A security consulting firm that provides penetration testing services for web applications, APIs, networks, and cloud environments. The company fosters a collaborative, remote-first culture with a focus on quality assurance and continuous improvement.
Deliver accurate security assessments of software, code, and firmware, evaluating resilience against AI-driven attacks.
Build and pressure-test novel AI-enabled security tooling and workflows, then drive adoption across the security org.
Partner cross-functionally to define and drive Samsara's medium- and long-term AI security strategy.
Samsara provides a Connected Operations Cloud platform that helps organizations improve safety, efficiency, and sustainability of physical operations. As a publicly traded company, they foster a culture of rapid career development and hyper growth, with a high-caliber team.