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mason5052/README.md

Mason Kim

DevOps / DevSecOps / Cloud Platform Engineer | Kubernetes, Terraform, CI/CD, AWS, security automation, observability, and incident response

LinkedIn Portfolio


What I Build

I build production-oriented cloud platforms and policy-bounded AI security systems: Kubernetes platforms, CI/CD automation, observability, security guardrails, and secure model delegation.

  • Production platform engineering: built and improved cloud and Kubernetes platform capabilities, CI/CD pipelines, observability, and security automation for production workloads. See Production DevOps Portfolio: Cloud Platform and DevSecOps Engineering.
  • AI security research: Secure Model Delegation -- policy-bounded local-to-cloud LLM fallback with target-specific disclosure policy, sanitization, routing, response verification, and audit logging
  • Contributing to: PentAGI -- contributor, not owner. Selected merged PRs across OAuth hardening, runtime reliability, Docker Compose health checks, and broad test coverage for core packages
  • Contributing to: Strix (21.1K+ stars) -- AI pentesting agents, reconnaissance skill docs and bug triage

Featured Projects

Project Description Stack
Production DevOps Portfolio: Cloud Platform and DevSecOps Engineering Production DevOps portfolio covering AWS infrastructure, Terraform, Kubernetes platform operations, CI/CD, GitOps delivery, observability, IAM hardening, WAF/security controls, incident response, and cost optimization. AWS, Kubernetes, Terraform, GitHub Actions, ArgoCD, Docker, Prometheus, Grafana
Secure Model Delegation Policy-bounded controller for local/private-to-cloud LLM fallback using synthetic enterprise requests. Applies hard disclosure policy before delegation, sanitizes denied spans, captures delegated payloads, and evaluates leakage, routing accuracy, and utility. Python, FastAPI, YAML policy, synthetic benchmarks

Research Focus

Secure Model Delegation is my current AI security research focus: how a trusted local or private AI system can safely delegate selected text requests to a less-trusted cloud LLM while enforcing target-specific confidentiality policy.

The work centers on threat modeling, disclosure-policy design, request sanitization, routing controls, response verification, audit logging, and leakage/utility evaluation with synthetic enterprise scenarios.


Open Source Contributions

Active contributor to security-focused open-source projects. Listed as a contributor in PentAGI v1.2.0 release.

Project Stars Contributions Stack
PentAGI 15K+ Contributor, not owner. Selected merged PRs include OAuth hardening (#120, #125, #127), runtime and reliability fixes (#150, #151, #152, #178, #179), CA private key cleanup (#168), Docker Compose health checks (#243), and test coverage across search tools, config, terminal, providers, graph/server context, schema validation, Langfuse, and Graphiti (#153, #170-#172, #189, #199-#202, #213-#214, #230-#244). Go, TypeScript, GraphQL
Strix 21.1K+ Reconnaissance skill docs, Discord badge fix, Windows compatibility, bug triage Python, Docker, LLM

Certifications

Certification Issuer Valid
Certified Ethical Hacker (CEH) EC-Council 2025-2028
Terraform Associate (004) HashiCorp Current
CASE Java (Application Security) EC-Council 2024-2027

Education

Degree Institution Status
MS Cybersecurity Georgia Institute of Technology Expected December 2026

Tech Stack

Python Go Terraform Kubernetes AWS AWS WAF Docker Bash Trivy Prometheus Grafana

Pinned Loading

  1. mason-kim mason-kim Public

    Security Engineer portfolio -- security research, platform defense, and cloud infrastructure projects

    HTML

  2. production-kubernetes-devops-platform production-kubernetes-devops-platform Public

    Hands-on DevOps portfolio for cloud platform and DevSecOps engineering across AWS, Kubernetes, Terraform, CI/CD, observability, incident response, and security automation

    Python

  3. vxcontrol/pentagi vxcontrol/pentagi Public

    Fully autonomous AI Agents system capable of performing complex penetration testing tasks

    Go 17.7k 2.4k