Vector Database Engineer

Location: San Jose, CA

Department: AI Research

As a Vector Database Engineer at Kai, you will design and maintain the semantic search infrastructure that powers our AI systems and RAG platforms.

You Will:

• Design and manage vector database infrastructure for large-scale embedding storage.
• Implement high-performance similarity search pipelines.
• Optimize indexing strategies for large embedding dataset.
• Integrate vector search with LLM-based systems.

You Have:

• 4+ years experience in backend engineering or data infrastructure.
• Experience with vector databases such as Milvus, Pinecone, or Weaviate.
• Strong programming skills and experience with distributed systems.
• Experience working with embeddings and semantic search systems.
• Experience with Kubernetes or cloud infrastructure.

Work Location

This is a 5-days a week in-office role based in North San Jose, CA.

About the Company

Kai is the AI company rebuilding cybersecurity for the machine-speed era. Founded by second time founders and trusted by Fortune 500 enterprises, Kai is building a future where security has no categories, no silos, and no human speed bottlenecks. The Kai Agentic Platform replaces fragmented, human-limited workflows with agentic AI systems that continuously contextualize, assess, reason, and execute security work at the speed of thought - making human defenders, superhuman. 

Why Kai?

• $125M in Funding: We are well-funded and have the resources to innovate and scale rapidly.

• Proven Early Success with Fortune 500 Customers: We have started partnering with Fortune 500 companies, marking early success and growing trust in our innovative solutions. This highlights the immense potential and reliability of our AI-powered cybersecurity offerings.

• Experienced Leadership: Our founding team consists of second and third-time entrepreneurs, each with over 25 years of experience in the cybersecurity industry. Their proven expertise and vision drive our ambitious goals, positioning us to lead in AI-powered cybersecurity.

• World-Class Leadership Team: Our Heads of AI, Engineering, and Product bring extensive experience from some of the world’s most influential companies, ensuring top-tier mentorship, direction, and vision.

• Cutting-Edge AI Solutions: Our team leverages the most advanced AI technologies, including Large Language Models (LLMs) and Generative AI.

• Generous Compensation: We offer highly competitive salaries, equity options, and a supportive work environment. Your contributions will be valued and rewarded as we grow together.

• Cybersecurity Knowledge Preferred but Not Required: While experience in cybersecurity is a plus, we are primarily seeking top-tier talent in microservices architecture, software development, and/or DevOps who are passionate about solving complex problems.