Comcast Cybersecurity: Cyber Security Engineer – AI & Agentic Platforms

Comcast is a Fortune 30 global media and technology company seeking a Cyber Security Engineer for their Cybersecurity AI & Data Platforms team. The role involves developing and maintaining the Premonition platform, optimizing data layers, and collaborating with security teams to enhance cybersecurity operations.

Responsibilities:

• Design, build, and maintain the Premonition platform for managing, deploying, and monitoring agentic pipelines
• Develop composable building blocks—agents, tools, pipelines, evaluators, and configuration—to enable rapid workflow assembly and iteration
• Implement robust APIs, orchestration, and infrastructure integrations on AWS and EKS for reliable LLM and agent driven workloads
• Engineer and optimize the high performance data layer, including Iceberg/Delta/Hudi, compression, indexing, latency, and largescale query performance
• Work with embedded engines such as DuckDB and LanceDB to enable interactive, low latency analytics
• Collaborate with cybersecurity stakeholders (SOC, IR, threat hunters, engineers) to translate workflows into secure, automated, observable pipelines
• Experiment with and productionize LLM and agent patterns (RAG, tool use, multistep agentic workflows), including evaluation, safety, and guardrails
• Own the full lifecycle of Premonition services: design, implementation, testing, deployment, observability, performance tuning, and continuous improvement
• Contribute to and enforce standards and best practices for LLM/agent usage, data management, security, and governance
• Participate in design/code reviews and foster a supportive, caring, competitive, high ownership, deeply technical culture

Requirements:

• Strong production experience with Python
• Solid SQL skills and experience working with large datasets
• Experience designing, building, and operating production APIs or microservices, including testing, observability, CI/CD
• Experience running workloads on AWS and Kubernetes/EKS
• Experience with high performance data engineering, including: Iceberg, Delta, or Hudi; or optimizing storage, compression, latency, and analytical query performance
• Ability to work in a deeply technical, high ownership environment and collaborate effectively across functions
• Strong communication skills with the ability to work closely with security stakeholders and translate workflows into technical designs
• Demonstrated experience building LLM based applications or agentic workflows (not just prompt tinkering)
• Hands on experience with agentic workflows: agents, tools, orchestration, multistep pipelines
• Experience with LLM platforms: Ollama, Amazon Bedrock, SageMaker
• Familiarity with orchestration frameworks: LangChain, LlamaIndex, or equivalent internal tooling
• Production experience with Iceberg, Delta Lake, or Hudi
• Experience with DuckDB or LanceDB
• Experience with Rust and/or JavaScript/TypeScript
• Experience with workflow/orchestration tools: Airflow, Temporal, Argo
• Prior exposure to cybersecurity domains (SOC, IR, threat hunting, security engineering)
• Experience in largescale enterprise or telecom environments with high security/reliability/compliance requirements