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Seattle, Washington, United States
Hybrid
Location: Seattle, WA, or Remote within the United States
Work arrangement: Flexible, including part-time availability
Handshake was founded on a simple belief: everyone deserves a path to a great career, regardless of where they went to school or who they know. Today, we support 25 million job seekers, more than 1 million employers, and 1,600 educational institutions.
In 2025, we started Handshake AI and built the fastest-growing AI data business in history. We work directly with researchers at frontier AI labs to create evaluations, publish benchmarks, and push the boundaries of data. We have grown from $0 to approximately $1 billion in run rate and pay approximately $60 million to more than 30,000 individuals every month.
Shape how careers evolve in the AI economy at a global scale, with an impact your friends, family, and peers can see and feel
Partner closely with world-class AI labs, Fortune 500 companies, and leading educational institutions
Work with engineers, scientists, operators, and other professionals from organizations such as Palantir, Meta, and Scale AI, as well as former YC founders
Help build a massive, rapidly growing business with billions in revenue
Work from Seattle or remotely from anywhere within the United States
Human data is core infrastructure for AI advancement. Frontier AI labs currently improve model capabilities through data-intensive post-training techniques. We believe spending on AI training data will increase three to five times over the next few years and continue growing as models expand into new domains.
Handshake AI supports frontier AI labs by working on their most complex data challenges at scale.
As a Cybersecurity Red Teamer, you will evaluate whether AI models can be manipulated into generating functional malware, viable exploit code, attack tooling, or step-by-step operational guidance that could give a threat actor meaningful assistance in carrying out cyberattacks.
Your job is to find the gaps between what a model’s safety guardrails are intended to block and what a skilled adversary can actually extract.
This role requires you to think like an attacker who has access to a highly capable AI assistant. You will craft adversarial prompts and multi-turn interaction chains that simulate how real threat actors, ranging from inexperienced attackers to advanced persistent threat operators, might use LLMs to accelerate reconnaissance, weaponization, exploitation, lateral movement, persistence, and exfiltration.
You will then evaluate whether the model’s output is genuinely dangerous or merely surface-level noise.
Deep cybersecurity expertise is essential. Your value will come from being able to examine a model-generated payload, exploit chain, or attack plan and determine whether it would actually work, how much refinement it would require, and what type of attacker it could meaningfully assist.
This position may be performed from our Seattle location or remotely within the United States. Seattle-based and remote team members will collaborate closely through shared evaluation workflows, regular feedback, and virtual working sessions.
Design technically grounded adversarial prompts that test whether models provide meaningful assistance across the cyber kill chain, from reconnaissance through exfiltration and impact
Evaluate model-generated code and technical output for functional correctness, determining whether outputs represent real exploits, plausible attack tooling, or nonfunctional noise
Test model behavior across offensive categories, including malware generation, vulnerability exploitation, social engineering, credential harvesting, privilege escalation, command-and-control infrastructure, and data exfiltration
Probe dual-use boundaries by testing how models respond to queries that combine legitimate security research, penetration testing, and defensive operations with offensive applications
Simulate attacker personas at varying skill levels, including opportunistic, intermediate, and advanced or APT-level actors
Test multi-step and multi-turn attack chains, including scenarios in which early turns establish benign context before pivoting to malicious requests
Score model responses using structured harm taxonomies and severity rubrics calibrated to real-world exploitability
Document findings with clear technical reasoning, including what a response gets right, what it gets wrong, and what level of attacker it could realistically assist
Contribute to the development and refinement of cybersecurity-specific evaluation frameworks and threat models
Collaborate with red teamers, AI researchers, and policy teams to translate findings into actionable model improvements
Stay current on evolving tactics, techniques, and procedures, CVEs, jailbreak techniques, and the intersection of AI and offensive security
Professional experience in offensive security, penetration testing, red teaming, vulnerability research, malware analysis, threat intelligence, or incident response
Ability to read, write, and evaluate code in languages commonly used for offensive tooling, such as Python, PowerShell, Bash, C/C++, or JavaScript
Understanding of common attack frameworks, techniques, and procedures, including MITRE ATT&CK and OWASP
Ability to assess the functional correctness and real-world exploitability of model-generated technical output
Strong hands-on experience using multiple LLMs, such as ChatGPT, Claude, Gemini, or open-source models
Creative and adversarial problem-solving skills
Clear and precise written communication, including the ability to explain technical risk to nonspecialist audiences
Strong ethical judgment and the ability to separate adversarial thinking from personal values
Ability to work independently while collaborating effectively in a feedback-heavy, distributed environment
Relevant certifications, such as OSCP, OSCE, GPEN, GXPN, CRTO, CRTL, CEH, or similar
Active or previous security clearance
Experience with exploit development, reverse engineering, or binary analysis
Background in cloud security, container security, or infrastructure-as-code attack surfaces
Familiarity with AI and machine-learning attack surfaces, including prompt injection, model extraction, training-data poisoning, and adversarial examples
Experience building or operating command-and-control frameworks, custom implants, or offensive tooling
A bug-bounty track record or published CVEs
Previous work in trust and safety, content moderation, or AI evaluation
Familiarity with LLM APIs or evaluation tooling
You have spent years breaking into systems and want to apply that mindset to testing AI models
You can examine a model-generated reverse shell, phishing template, or privilege-escalation script and quickly determine whether it would work in a real environment
You think in kill chains and attack graphs, not just individual prompts
You understand that the difference between a useful coding assistant and a dangerous one often comes down to context, specificity, and operational detail
You closely follow the offensive-security community and stay current when new techniques emerge
You care about AI safety because you understand what can happen when powerful tools are used irresponsibly
You can collaborate effectively with a team whether you are working from Seattle or remotely
This role involves regular and deliberate engagement with offensive cybersecurity content. You will create and evaluate scenarios involving malware, exploit code, social engineering, network-intrusion techniques, and other attack methodologies.
All work is conducted within a structured evaluation framework with strict ethical guidelines. Candidates must be able to engage with this material professionally, responsibly, and sustainably.
