Senior/ Principal Data Scientist, Security AI & ML

The posting, as Radicl Defense wrote it

About RADICL
As the leading provider of Cybersecurity-as-a-Service (CSaaS), RADICL is revolutionizing advanced cyberthreat protection for small and medium-sized businesses (SMBs) in the U.S. Defense Industrial Base (DIB) and other regulated industries. No longer should SMBs be satisfied with lack luster solutions delivering lack luster protection. RADICL is ushering in a new era of turn-key and affordable cyberthreat protection via its AI-powered virtual SOC platform that allows human and digital agents to quickly and seamlessly become SMBs’ day-to-day compliance and security operations team.

RADICL’s turn-key CSaaS offering uniquely combines compliance management with AI and expert-driven 24/7 security operations. We guide customers to regulatory and best practice adherence with standards like CMMC and NIST CSF while also delivering 24/7 threat monitoring, deep-spectrum™ threat hunting, incident response, vulnerability management, and security awareness training.

With RADICL, customers can stay mission focused, confident their front, rear, and flank are protected, affordably and without compromise.

If you’re excited about working with industry experts to help SMBs focus on growing their businesses without the constant worry of security and compliance risks, we invite you to join us in our mission to protect American businesses and drive innovation in cybersecurity.

About the role
RADICL is a fully managed cybersecurity and compliance service for small and mid-sized organizations, many of them defense contractors facing nation-state threats and CMMC requirements. Our autonomous virtual SOC (vSOC) pairs AI agents that handle high-volume triage with expert analysts who handle judgment and response.

AI is already in production across our platform. Your job is to make it measurably better and add ML where rules fall short. This is a hands-on role: you'll write the code, run the experiments, and ship the models. We're hiring at the Senior or Principal level.

If the above excites you, RADICL Defense is seeking high performing, motivated individuals to join our mission. As an early member, you will work closely alongside an experienced founding team and realize the life-changing experience of building a company. You will work with the latest technologies in software, cybersecurity, and cloud and will have a significant impact on the formation of our platform and offering.

About You
You enjoy fast-paced environments, bring a positive attitude, and excel at getting things done. You enjoy being part of a high performing team and are also able to self-direct and self-start. You consider yourself to be top tier talent and are eager to help others raise their game. You enjoy working with customers, are an excellent communicator, and able to engage and interact with people of various backgrounds and skill levels. You want your work to have meaning, to be important. You want to be part of creating something great.

The threats you'll help us stop

[…]
aluating and improving LLM or agent systems in production.

• Hands-on experience adapting or training models for a specialized domain.
• Anomaly detection or classification with rare events and noisy labels.
• Solid statistics and experimental design, and the judgment to ship a simple baseline when it's good enough.
• Comfort in an engineering team: reading production code, writing tests, and writing clear RFCs.
• Principal: you've owned ML problems end to end and can defend architecture decisions for the ML stack.

Nice to have

• Security data and detection experience; MITRE ATT&CK.
• LLM security: prompt injection, guardrails, red-teaming agents.
• Vulnerability data (CVSS, EPSS) or CMMC / NIST 800-171.

Why this role

• You'll choose the methods and tools, and build it yourself.
• Real data: security telemetry at scale, analyst-labeled cases, and AI agents already in production.
• The mission: defending defense suppliers and other high-risk small organizations from nation-state threats.

Details

Compensation: $160,000 – $195,000 base (Senior) / $195,000 – $235,000 base (Principal), plus equity, health, dental, vision, 401(k), and PTO.

About the Workplace
At RADICL, we prioritize our culture and believe the strongest teams are built through daily, side-by-side collaboration and experiential sharing. We also value individual freedom and flexibility. For this reason, we have a hybrid work model. As a team, we are in office M/W/Th with work-from-home on Tuesdays and Fridays. For remote positions, periodic travel to Boulder will be expected to participate in company events and meaningful side-by-side collaboration opportunities.

RADICL offices are in downtown Boulder, Colorado with easy-to-access employee parking provided by the company. We offer comprehensive, competitive benefits including health, dental, and vision as well as 401K and a responsible PTO plan .

We encourage motivated, talented, mission-oriented, and fun people to apply. Let’s do this!