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hgunduzoglu/README.md

Hi, I'm Hüsamettin Gündüzoğlu 👋

Full Stack Software Engineer · Industrial Engineer
📍 Ankara, Türkiye — open to collaboration worldwide

I build web and mobile products, backend systems, SaaS platforms, and data-driven applications.

👨‍💻 About Me

I am a full stack software engineer with a degree in Industrial Engineering — a background that shapes how I approach software: with a focus on systems, processes, optimization, and measurable outcomes.

I enjoy working across the full product lifecycle: designing architecture, building APIs, developing interfaces, modeling data, deploying systems, and improving products based on real usage. My engineering background draws me toward problems where software meets decision-making — forecasting, optimization, capacity planning, and data-driven operations.

I am especially interested in backend architecture, SaaS products, distributed systems, applied AI, and privacy-aware software design. I also enjoy exploring cryptography-related concepts and understanding how systems work under the hood.

What I Work On

  • Full-stack web and mobile application development
  • Backend architecture, API design, and multi-tenant SaaS platforms
  • PostgreSQL data modeling, Redis, caching, queues, and backend performance
  • Authentication, authorization, RBAC, and audit logging
  • Forecasting, optimization, and decision support systems — where Industrial Engineering meets software
  • Privacy-aware product design and verification protocols

2026 GitHub Contribution Challenge

I am taking on a 365/365 GitHub contribution challenge in 2026.

The goal is to stay consistent throughout the year by building, improving, refactoring, documenting, and experimenting with different software projects every single day — focusing on quality of work, not commit count.

⚡ Tech Stack

Languages

TypeScript, JavaScript, Python, Dart, Java, PHP, Rust, C, C++, Go

Frontend & Mobile

React, Next.js, HTML, CSS, Tailwind CSS, Flutter

Backend & APIs

Node.js, NestJS, Express, Laravel, Spring, Flask, Prisma, Postman

Swagger Socket.io JSON Web Tokens

Databases & Messaging

PostgreSQL, MySQL, MongoDB, Redis, Apache Kafka

Cloud, DevOps & Observability

AWS, Vercel, Cloudflare, Docker, Kubernetes, Nginx, GitHub Actions, Linux, Bash, Grafana

Data, AI & Machine Learning

scikit-learn, PyTorch, TensorFlow

Pandas NumPy XGBoost LightGBM Pyomo

Blockchain & Web3

Solidity

Noir Aztec Chainlink

Tools & Design

Git, GitHub, VS Code, Figma

Architecture & Concepts

REST API OpenAPI Microservices Mixed-Integer Linear Programming Zero-Knowledge Proofs

🚀 Selected Work

Kalis / Clinix

A SaaS platform for psychology clinics, designed around multi-tenant architecture, appointment management, customer management, staff roles, payment workflows, audit logging, and AI-assisted operations. Deployed in production and used by real customers.

Focus: SaaS architecture, multi-tenancy, RBAC, PostgreSQL, secure clinical workflows


Consensus

A survey-based social platform focused on anonymous participation, demographic insights, regional heatmaps, voting integrity, and social interaction around public questions.

Focus: Anonymous participation, social product design, device-level integrity, backend architecture


Warehouse Process Improvement Decision Support System

A data-driven decision support system for e-commerce warehouse operations, covering demand forecasting, ABC classification, replenishment planning, and operational optimization. Built directly at the intersection of Industrial Engineering and software.

Focus: Forecasting, operations research, inventory control, warehouse process improvement


Privacy-Preserving Social Verification

Experiments around privacy-preserving social account verification, where users can prove ownership or attributes without exposing unnecessary private data.

Focus: Privacy, verification protocols, cryptography-related concepts, decentralized identity

Most of my recent work lives in private repositories. I'm happy to walk through architecture decisions, trade-offs, and code in conversation.

🌱 Community & Open Contributions

A tool I built from scratch that lets METU students browse all Non-Technical Elective (NTE) courses in one place, instead of digging through scattered department pages. NTEs are a specific course category at METU, and discovering options used to be a recurring pain — this site centralizes them and makes selection straightforward.

Role: Creator and maintainer


A schedule-building tool that helps METU students plan their course selection before registration. I joined as a maintainer, contributing improvements, fixes, and new features to make the planning experience smoother for thousands of students each semester.

Role: Maintainer and contributor


METU Istanbul Alumni Association (ODTÜMİST)

The association's official website was outdated and constrained by WordPress, with no off-the-shelf theme matching the look they wanted. I adapted a JavaScript reference theme into a custom WordPress theme, restructuring content for events, announcements, and alumni information.

Role: Theme adaptation, WordPress customization, content structure redesign

📊 GitHub Overview

Building secure, scalable, and product-oriented software — with an engineer's mindset for systems and outcomes.

Pinned Loading

  1. instagram-social-verify instagram-social-verify Public

    TypeScript

  2. whatsapp_bot whatsapp_bot Public

    A WhatsApp bot developed to simplify the business processes of my mother, who is a shopkeeper.

    TypeScript

  3. oguzutku1745/zkPoke oguzutku1745/zkPoke Public

    TypeScript

  4. erenerisken/robotdegilim.xyz erenerisken/robotdegilim.xyz Public

    Python 3 6