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git blame: it was me. it was always me.
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PantelisTsagkas/README.md

PANTELIS contribution grid

Hi there 👋

  • 👂 My name is Pantelis Tsagkas
  • 🏳️ Pronouns: he/him
  • 🔭 I'm currently working on AWS cloud projects and Terraform
  • 🌱 I'm currently learning Terraform in depth, Kubernetes, and Distributed Systems
  • 🤝 I'm looking to collaborate on ETL pipelines, data engineering, and IaC
  • 💬 Ask me about Starship & Super Heavy Booster
  • 📫 How to reach me: LinkedIn · Portfolio
  • ❤️ I love shipping real projects and documenting what I learn (like my Cloud Quest walkthrough)
  • ⚡ Fun fact: In Git we trust. Everyone else must push.

Connect with Me

Portfolio LinkedIn GitHub


About Me

I'm a Data & Platform Engineer with a strong interest in distributed systems, cloud infrastructure, observability, and AI engineering. I enjoy understanding how complex systems work beneath the surface, from Kubernetes control planes and consensus algorithms to machine learning pipelines and production infrastructure.

Most of what I build starts with infrastructure as code. I enjoy creating reproducible systems, instrumenting them with proper observability, and documenting everything I learn along the way.

Currently I'm focused on:

  • Building cloud infrastructure with AWS and Terraform
  • Exploring Kubernetes internals, distributed systems, and platform engineering
  • Developing AI-powered applications using modern LLMs
  • Sharing detailed technical write-ups and hands-on projects

I prefer building real systems over tutorial projects. The pinned repos are systems I've designed, deployed, broken, fixed, and documented.


Tools and Cool Stuff

Languages & frameworks

Python TypeScript React Next JS

Data & cloud

Postgres AWS Terraform Amazon SageMaker Vercel Git

AI daily drivers

Claude Claude Code Cursor Ollama Hermes Open Source Models

Quality & AI

Playwright Pytest Guardrails AI

Workflow

GitHub Actions


Featured Projects

  • golden-fork-pipeline — Serverless CSV → DynamoDB ingestion with validation, quarantine alerts, full Terraform IaC
  • image-resizer-terraform — Presigned uploads, S3-triggered Lambda, three resized variants — zero console clicks
  • observability-simulator — Local observability sandbox: trigger simulated failures, latency, and CPU load, then watch the full telemetry pipeline react in real time
  • AskBetterLive prompt enhancement product. Site
  • modal-taxi-pipeline — End-to-end MLOps on Modal: XGBoost, W&B experiment tracking, champion/challenger model gate, scale-to-zero inference
  • termref — AI-powered terminal cheat sheet generator

Certifications

Exam-based credentials (paid certification exams).

AWS Certified AI Practitioner AWS Certified AI Practitioner — June 2025
Foundational AI, ML, and AWS AI services.

Courses & Training

Hands-on Cloud Quest roles, learning paths, and completed courses.

AWS Cloud Quest

AWS Cloud Quest Cloud Practitioner AWS Cloud Quest: Cloud Practitioner — June 2026
Fundamental AWS Cloud concepts with hands-on experience across compute, networking, database, and security services.
AWS Cloud Quest Solutions Architect AWS Cloud Quest: Solutions Architect — June 2026
Solution building with a broad set of AWS services — secure, fault-tolerant, and highly available architectures.
AWS Cloud Quest Machine Learning AWS Cloud Quest: Machine Learning — June 2026
Hands-on solution building with AWS ML/AI services, including SageMaker model build, test, and deploy.

Completed courses

Udemy AI Engineer Core Track: LLM Engineering, RAG, QLoRA, Agents · Ed Donner
View certificate
CS50 CS50x — Introduction to Computer Science · Harvard University
View certificate
IBM SkillsBuild Artificial Intelligence Fundamentals · IBM SkillsBuild
AI concepts, ethics, Watson Studio, and applications across NLP, CV, and ML.
Anthropic AI Fluency: Framework & Foundations · Anthropic Academy — April 2026
Verify certificate

Turning rough ideas into reproducible cloud stacks — and models that actually deploy.

Pinned Loading

  1. fastapi-ecs-demo fastapi-ecs-demo Public

    Reference demo: FastAPI app in Docker, deployed to AWS ECS Fargate behind an ALB, with Terraform and GitHub Actions (OIDC).

    HCL

  2. golden-fork-pipeline golden-fork-pipeline Public

    Serverless CSV-to-DynamoDB ingestion pipeline with validation, quarantine alerting, and full Terraform IaC. Built with AWS Lambda, S3, DynamoDB, and SNS.

    Python

  3. image-resizer-terraform image-resizer-terraform Public

    Production-style AWS image resizer: presigned uploads, S3-triggered Lambda, three resized variants. Built with Terraform, zero console clicks.

    HTML

  4. modal-taxi-pipeline modal-taxi-pipeline Public

    End-to-end MLOps on Modal: NYC taxi trip duration prediction with parallel feature engineering, XGBoost, W&B experiment tracking, champion/challenger model gate, and scale-to-zero HTTPS inference. …

    Python

  5. observability-simulator observability-simulator Public

    A production-style local observability sandbox built for DevOps portfolio demonstrations. Trigger simulated system behaviours (success, errors, latency, CPU load) and observe the full telemetry pip…

    Python

  6. termref termref Public

    >_ Terminal cheat sheet generator — pick a technology, hit generate, get a clean reference card.

    TypeScript