Senior Threat Hunter

OpenKrill; United States; On-site; USD 140,000 - 210,000; Full time

Benefits offered by this job

Competitive salary

Health, dental, vision benefits

Mental health support

401(k) retirement with company match

Unlimited vacation

Parental leave

Equity stock options

Job summary

SimSpace is hiring a Senior AI-Centric Threat Hunter to join our Evaluation Team. You will lead research to integrate agentic capabilities into test environments and advise customers on how to test and deploy them in real networks.

You will mentor blue team exercises, use AI/ML tooling and open source frameworks, and collaborate across a geographically dispersed organization. Travel may be 25–30% to support global clients.

Qualifications

• 6+ years of experience in security operations, incident response, detection engineering or cyber threat intelligence.
• Proficiency in AI/ML with practical experimentation using AI agents and LLM APIs.
• Experience architecting RAG pipelines to ground LLMs in internal threat data and policies.
• Strong Python and data science library skills (Pandas, Numpy).
• Familiarity with open-source AI ecosystems and local LLM frameworks.
• Experience with host, network, and application telemetry for kill chain analysis.
• Ability to communicate risk to both technical and non-technical audiences.

Responsibilities

• Lead internal initiative to research and integrate candidate agentic capabilities into test environments.
• Serve as a consultant to customers on identifying, integrating and testing capabilities prior to deployment.
• Keep up with AI and cybersecurity operations industry evolution through publications and standards.
• Mentor advanced threat hunting tactics and strategy for global clients and international orgs.
• Utilize Blue Team experience to establish parsing rules, dashboards, and tuning of security tools.
• Develop toolsets and scenarios within a cybersecurity range to model real-world defense.
• Build consensus across the organization to drive results and lead projects.
• Navigate a geographically dispersed team and support customer events (travel 25-30%).

Tools

Hugging Face

Ollama

vLLM

Pandas

Numpy

SQL

Splunk

Elastic

Hadoop

Hue

Job description

SimSpace serves as an AI Proving Ground where organizations can confidently train, test, and outmaneuver adversaries in any environment. Trusted by allied governments, militaries, enterprises, and research institutions worldwide, SimSpace enables adaptive, AI-ready defenses that stay ahead of evolving threats. Founded in 2015 by experts from U.S. Cyber Command and MIT Lincoln Laboratory, the platform unifies training, testing, and validation in a realistic, live-fire simulation—helping teams evaluate security investments, optimize performance, and compress cyber readiness cycles from months to days.

Why join SimSpace? We are an organization that is focused on building our culture and mindfully enhancing our atmosphere every day which is why we have collaborated on an integral value system. Our governing philosophy of being Human Centered is deeply embedded within our value system. We apply this philosophy to every one of our internal team members, external clients, and their customers.

How Do We Work? We believe that people are at the center of everything we do. SimSpace fosters a culture of continuous learning, curiosity, and professional growth. That belief shows up in action: in-house training, internal and external learning platforms, cyber conferences, industry events, and dedicated time for skill development. Our people are empowered to shape their careers - and it shows. Year over year, SimSpace consistently outperforms industry benchmarks in internal mobility, promotions, and total rewards growth.

Who Thrives Here? We are a team of innovators, protectors, and problem-solvers. We believe diversity of thought and experience fuels better solutions, and we’re committed to building teams that reflect the communities we serve. Whether you’re remote or office-based, you’ll collaborate with talented colleagues across departments and time zones, united by the mission to create a safer digital world.

We are looking for a Senior AI-Centric Threat Hunter

We are looking for a highly motivated Cybersecurity Professional to support mentorship and assessment of global security teams in basic to advanced cybersecurity skill areas. The ideal candidate has a strong technical background, is enthusiastic, is good at problem solving, has a strong desire to learn, prefers to be hands-on technically, and constantly strives for excellence.

The Senior AI-Centric Threat Hunter will be part of a team developing methodologies of incorporating AI agents into cybersecurity workflows, designing experiments to help develop/test AI agents and models, delivering instructional content to customers, and facilitating a variety of Blue Team exercises for SimSpace and our customers. When facilitating exercises, you will be responsible for teaching security concepts, demonstrating practical/hands‑on use of open source and commercial security tools; referencing both well established and cutting edge techniques that Cybersecurity Incident Response Teams might use to effectively defend their networks from advanced cyber threats.

What will you be doing as a Senior AI-Centric Threat Hunter at SimSpace?

• Lead an internal initiative to research and integrate candidate agentic capabilities into test environments
• Serve as a consultant to customers looking to integrate agentic capabilities into their cybersecurity enterprise in how to identify, integrate and test capabilities prior to deployment
• Keep up with industry evolution around AI and cybersecurity operations reviewing publications and standards
• Bring world class mentorship of advanced threat hunting tactics and strategy for our global clients and international organizations.
• Utilize years of Blue Teaming experience to establish parsing rules, dashboards, and tuning of numerous enterprise security tools in our cyber range platform to exceed client goals and objectives.
• Work with our range operations team to develop toolsets and scenarios within a cybersecurity range to model real-world threat defense scenarios.
• Utilize foresight and awareness of overall business priorities when dealing with competing requirements and needs from across the organization in order to build consensus and drive results.
• Takes initiative in day‑to‑day tasks, leads projects, and mentors other team members.
• Navigate and work effectively across a complex, geographically dispersed organization.
• Support assessment of customer security teams and customer events (travel estimated up to 25-30%).

What are the qualifications to apply? To be successful as a Senior AI-Centric Threat Hunter on SimSpace’s Evaluation Team, you need to have:

• Demonstrated proficiency in AI/ML engineering, including practical application and experimentation with AI agents, LLM APIs.
• Possess a deep understanding of AI agents, specializing in the orchestration of agent decision loops, tool access frameworks, and memory systems optimized for threat hunting and proactive security operations.
• Architecting RAG Systems: Hands‑on experience designing and deploying Retrieval‑Augmented Generation (RAG) pipelines to ground LLMs in internal threat intelligence, historical incident data, and enterprise security policies while eliminating hallucinations.
• Advanced proficiency in Python and standard data science/AI libraries, alongside strong scripting skills for data manipulation (Pandas, Numpy).
• Familiarity with open‑source AI ecosystems (Hugging Face) and frameworks for running local, privacy‑safe LLMs (Ollama, vLLM).
• 6+ years of experience in a technical role in the areas of Security Operations, Incident Response, Detection Engineering, Offensive Security/Red Team, or Cyber Threat Intelligence.
• Experience analyzing host, network, and application telemetry for indicators of attack across the stages of the cyber kill chain.
• Direct experience working with very large datasets and log analysis tools including but not limited to: Splunk, Elastic, Python, Pandas, SQL, Hadoop, Hue.
• Ability to apply Cyber Threat Intelligence through enrichment, correlation, and attribution.
• Experience with setup and/or troubleshooting of security stacks.
• Familiarity with offensive security strategies and assessment methodology.
• Experience explaining threat hunt objectives to mixed technical and non‑technical audiences and ability to communicate associated risk by distilling complex content into digestible information.
• Hands‑on technical experience and ability to demonstrate hunting for indicators of compromise in numerous enterprise scale EDR and SIEM tools to include Splunk, Elastic, Crowdstrike, and many other major vendors.
• Previous experience performing digital forensics or indecent response on major security incidents.
• Demonstrated self‑starter with a constant desire to help others improve and build the team.

We’re proud to offer a competitive and comprehensive package designed to support your well‑being, growth, and success:

• Compensation. Competitive salary reflecting our confidence in your expertise and impact, with the opportunity for commission tied to company performance and individual contributions.
• Health & Wellness. Comprehensive medical, dental, and vision benefits, plus savings plans—coverage starts on day one!
• Mental Health Support. Access to company‑paid counseling, coaching, and resources for you and your family through Spring Health.
• Financial Well‑Being. Plan for your future with a 401(k)-retirement savings plan featuring a company match.
• Flexible Time Off. Take the time you need with unlimited vacation and dedicated health & wellness days. SimSpace provides flexible solutions to meet the diverse work‑life needs of team members.
• Parental Leave. Paid leave plans to support you and your loved ones during life’s most important moments.
• Ownership Opportunities. Equity stock options at hire, with annual performance‑based grants—b