I'm a self-taught DevOps and cloud engineer. I also build AI agents — backend systems that use LLMs (like Google Gemini) to handle real tasks such as answering customer questions, qualifying leads, and booking appointments.

I like to learn by building real projects, deploying them, and writing down what actually happened — including the errors I hit and how I fixed them.

• Cloud & Infrastructure: AWS (EKS, ECR, CloudShell, IAM), Terraform, eksctl, Kubernetes, Docker, Ansible
• CI/CD: GitHub Actions, Jenkins, GitLab CI
• AI Agents & Backend: Python, FastAPI, Google Gemini API, PostgreSQL, SQLite, Node.js
• Other: Basic security/detection engineering, Linux troubleshooting

A fintech API deployed to AWS using Kubernetes. Built two ways — with eksctl and with Terraform — with autoscaling, health checks, CI/CD, and notes on cost and security.

api-service/   → Flask app, Dockerfile, k8s manifests
infra/         → Terraform (EKS cluster)
.github/       → CI/CD workflows

Future plans: add Prometheus/Grafana monitoring, container vulnerability scanning (Trivy), and Network Policies. 🔗 https://github.com/rey26341-sudo/FINTECH-CLOUD-EKS

A full DevOps pipeline: Terraform builds the infrastructure, Ansible configures the server, and Jenkins handles build-and-deploy automatically on every push.

terraform/     → infrastructure provisioning
ansible/       → server configuration
jenkins/       → CI/CD pipeline config

Future plans: add automated rollback on failed deploys and a staging environment. 🔗 https://github.com/rey26341-sudo/devops-stack

An AI agent that acts as a receptionist for multiple businesses from one backend — answers questions and books appointments using Google Gemini.

app/           → FastAPI backend + Gemini agent logic
db/            → PostgreSQL models
Dockerfile

Future plans: add WhatsApp integration and a business owner dashboard. 🔗 https://github.com/rey26341-sudo/yellamma-bot

An AI agent that reads travel enquiries in Chinese or English, extracts key details (dates, budget, group size), and flags incomplete ones for human review.

app/           → FastAPI backend + Gemini agent logic
models/        → Pydantic schemas
db.sqlite

Future plans: add a human-review web dashboard and CRM export. 🔗 https://github.com/rey26341-sudo/bilingual-tour-ops-agent

A small security project that detects repeated failed login attempts and generates alerts, similar to what a SOC analyst would monitor.

detectors/     → detection logic (brute-force login)
alerts/        → JSON alert output

Future plans: add more detection rules and a simple alert dashboard. 🔗 https://github.com/rey26341-sudo/SOC-Evaluation-Lab

A script that checks whether a system is ready for deployment — server access, repo structure, pipeline status, and logs — built and tested on real AWS CloudShell.

scripts/       → validation checks
.github/       → CI workflow

Future plans: turn checks into a reusable CI/CD pre-deploy gate. 🔗 https://github.com/rey26341-sudo/ENVIRONMENT-ACCESS-VALIDATION

A write-up of a real problem I debugged: a dual-boot laptop with a frozen screen and dead touchpad. The cause turned out to be a hardware key, not the software I'd spent hours checking.

README.md      → full case study write-up

Future plans: turn this into a general troubleshooting checklist for dual-boot systems. 🔗 https://github.com/rey26341-sudo/SYSTEM-TROUBLESHOOTING-CASE-STUDY

• I write down real errors and how I fixed them, not just the finished result.
• I test things end-to-end and keep proof (screenshots, logs, output) instead of just describing what should work.
• I'm comfortable working across infrastructure (Terraform, Kubernetes, CI/CD) and AI-driven backend systems (FastAPI + agents).

Open an issue on any of my repos, or find me at github.com/rey26341-sudo.