Fullstack Engineer, Generative AI (Backend Focus)

Posted 3 Days Ago
Be an Early Applicant
28 Locations
Senior level
Artificial Intelligence • Information Technology • Software • Cybersecurity
The Role
The Fullstack Engineer will focus on product software engineering, agents framework engineering, and R&D in AI and cybersecurity. Responsibilities include hands-on engineering, testing, and integrating AI Agents into existing systems.
Summary Generated by Built In
About Company

Cracken is a fast-growing Silicon Valley-based startup built by elite nation-state and commercial operators who defended critical cyber infrastructure during the war in Ukraine, researched AI and cybersecurity at MIT and Kyiv Polytechnic, and led teams at Apple, Google, Palo Alto Networks, HackerOne, DIU, Comcast, HP, and more.

We tame Cracken, an AI Agent for Cybersecurity with human-in-the-loop. Our flagship product, is an agentic AI copilot drastically scaling cyber assessments for enterprises and governments.

We are growing and seeking an extremely talented software engineer to help us pioneer the future of cybersecurity.

Responsibilities
  • Product Software Engineering: Hands-on engineering and testing of the product in various capacities, focusing on AI Agent features.

  • Agents Framework Engineering: Hands-on engineering and testing of the internal agent’s framework (similar to LangChain / Haystack and others).

  • Research & Development: Stay updated with the latest in AI and AI Agents. Provide relevant insights to the team and integrate innovations.

Requirements
  • Ideally 5+ years of experience in Python (we can consider less experienced engineers, who learn very quickly and are ready to work in the startup environment)

  • Experience with Generative AI

  • Experience with Generative AI Agents will be a huge plus, specifically:

   — implementation of Generative AI Agents using Langchain / Haystack and others

   — implementation of RAG using LlamaIndex and other Advanced RAG frameworks

   — evaluation of AI Agent Performance

   — integration of AI Agents into Existing Systems

  • Cybersecurity product background: worked on security-focused software or platforms.

Nice To Have
  • Master’s or Ph.D. in Computer Science, Cybersecurity, or related fields.

  • Interest or active participation in cybersecurity-related activities.

  • Contributions to AI / CS/ Cybersecurity research, blogs, or whitepapers showcasing expertise.

  • Experience in developing or contributing to open-source developer tools or frameworks.

Why Cracken?
  • Real-World Impact: Validated in nation-state operations and supported by internal researches.

  • Team's Unique Motivation & Expertise: Ukrainian-heavy international team with Ph.D.s, professors, and top-tier industry veterans, driven by intrinsic passion forged through exposure to the hardships of war.

  • Impeccable Timing & Positioning: At the cutting edge of AI, cybersecurity, and autonomous systems, Cracken is best positioned to win the race against adversaries.

Top Skills

Generative Ai
Haystack
Langchain
Llamaindex
Python
Rag
Am I A Good Fit?
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The Company
HQ: Palo Alto, California
19 Employees
Year Founded: 2023

What We Do

Release the Cracken. Defend what matters.

Cracken is the first Red-AI Copilot built for real offense, not an ordinary CNAPP or endpoint security. We arm defenders with nation-state grade attack logic at machine speed, under full human command. Not black boxes. No fluff.

Born on the hardest frontlines of cyber conflict -- Ukraine, US, EU -- Cracken is built by operators who know what it means to face adversaries that don't play fair. We are turning that battlefield DNA into the only agentic AI platform that simulates live, adaptative attacks across cloud, endpoint, and hybrid environments.

Why it matters:

⚡Human-in-the-Loop control: every action is transparent, auditable, and reversible. CISOs don't trust black-box AI. We give them speed and oversight.

⚡Accuracy over noise: no posture fluff, no false positives. Only validated, exploitable risk that matters.

⚡100% faster coverage than manual red teams.

⚡Undetected vulnerabilities caught before exploitation (proven in North America and Ukraine's critical infrastructure).

⚡Zero black-box risk with audit trails, rollbacks, and operator trust at the core.

⚡Regulatory ready for CISA, EU AI Act, and global oversight.

⚡Quantifiable adoption with seamless integration into CI/CD multi-cloud and hybrid environments.

Cracken is not another CNAPP, CIEM or compliance dashboard. Those show posture. We show truth. Attackers don't wait, neither should you.

👉Investors, customers, and security leaders: join us in weaponizing defense. Let's release the Cracken!

www.cracken.ai

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