Senior AI/LLM Engineer

The role

This person will build and deploy AI-powered features, LLMs, and RAG pipelines on the Censys Platform. They will work with the SOC/TH team to transform internet scan data into actionable insights.

What you will do

• Rapidly prototype and deploy AI-powered features to enhance search, improve recommendations, and automate workflows
• Apply machine learning to streamline workflows, personalize experiences, and surface critical insights
• Develop and fine-tune LLMs and RAG pipelines to reason over Internet-scale data, summarize findings, and deliver context-aware insights
• Build, scale and maintain AI-driven analytics and automation systems
• Collaborate with frontend, product, and data engineering teams to integrate AI-native experiences
• Continuously evaluate and improve model performance through RAGAS, LangSmith, and automated regression testing frameworks

Required qualifications

• 5+ years of software engineering experience
• 2+ years building and scaling AI-powered user-facing features
• Strong proficiency in Python for backend and API services development
• Familiarity with RAG evaluation frameworks (e.g., RAGAS, LangSmith)
• Designing regression testing for LLM pipelines
• Ability to rapidly prototype, validate and refine AI features in a fast-paced, experiment-driven environment
• Prior knowledge in prompt engineering improving LLM accuracy, reasoning and consistency
• Understanding secure and responsible AI practices, implementing guardrails and safety checks
• Hands-on experience with CI/CD pipelines, test automation, and deployment best practices for AI applications
• Strong cross-team collaboration

Nice to have

• Leveraging AI tools as a force multiplier to code smarter, iterate faster boosting productivity and improving product capabilities
• Advanced knowledge of AI/ML architectures, model evaluation, and applied deep learning
• Experience with retrieval-augmented generation (RAG), vector search, and LLM fine-tuning
• Understanding of embedding models and AI-driven analytics
• Proven ability to optimize AI models for low-latency, real-time interactions in browser or frontend environments
• Experience deploying secure AI systems in cybersecurity or other sensitive data domains

Benefits

• 401k match
• health
• vision
• dental

Before you apply

• All candidates who receive an offer of employment will be asked to complete an identity verification through CLEAR

About the company

Censys provides internet visibility and intelligence to the global security community. Their platform helps security teams uncover hidden threats and manage Internet exposure.