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sunzid02/README.md

Sarker Sunzid Mahmud banner


🌐 Portfolio


👨‍💻 About Me

Master’s student in Data Science at TU Dortmund, working as a Software Engineer at Atflow GmbH, with over 5 years of full-stack development experience across Europe & Asia.

I specialize in:

  • Scalable backend architecture (Laravel, Node.js, DTO-driven design)
  • Modern frontend development (React, Vue)
  • DevOps & Cloud systems (Docker, Kubernetes, CI/CD)
  • Data engineering & ML workflows
  • Building developer-friendly tools and automating workflows

I enjoy connecting software engineering with data-driven solutions that create real impact.


🛠 Technical Skills


🏢 Experience

Software Engineer – Atflow GmbH (Hamburg, Germany)

Tech: Laravel, React, NativePHP, PostgreSQL

  • Enhanced the TaskTracker system, recovering 38% more billable hours
  • Improved time-tracking logic, analytics accuracy, and UI/UX performance
  • Contributed to agile delivery, code reviews, and automated workflows

Web Developer – Konnektivität GmbH (Lünen, Germany)

Tech: Angular, PHP Slim, MySQL

  • Built and maintained internal SalesSupport dashboard
  • Standardized REST APIs, reduced integration time, and optimized queries
  • Improved real-time dealer & margin analytics

Software Engineer – Echologyx (Dhaka, Bangladesh)

Tech: JS, HTML/CSS, Optimizely, VWO

  • Delivered A/B tests improving conversions by up to 25%
  • Optimized frontend performance (15% faster page loads)

Software Engineer – REPTO (50,000+ users)

Tech: Laravel, MySQL, AWS

  • Sole developer for a high-traffic e-learning platform
  • Built job marketplace, exam engine, membership system
  • Managed deployments, payment integration, dashboards

🌟 Highlight Projects

🔹 News Aggregator

Full-stack Laravel 12 + React dashboard using multi-API ingestion
🔗 https://github.com/sunzid02/news-aggregator


🔹 Dev Connector

Developer social network using React, Redux, Node.js & MongoDB
🔗 https://github.com/sunzid02/SocialSite


🔹 Daylight Exposure Analysis – DGUV Internship

ML project using Logistic Regression, ROC Analysis, Pandas, NumPy
🔗 Data processing, time-series forecasting, & ML threshold modeling


🎓 Education

M.Sc. Data Science — TU Dortmund
B.Sc. Computer Science & Engineering — AIUB


💎 Premium GitHub Analytics

🧠 Developer Profile Summary

📊 Activity Dashboard

🧩 Languages & Technologies

🔥 Streak

🏆 Achievements

⚡ Contribution Graph


🎯 Currently Learning

  • Advanced Kubernetes
  • Kafka & Event-Driven Systems
  • Machine Learning Engineering
  • Distributed Backend Architecture

✨ Quote

“There is always something to learn — every project teaches you something new.”


🐍 Contribution Snake


Pinned Loading

  1. news-aggregator news-aggregator Public

    share world recent news...

    PHP

  2. SocialSite SocialSite Public

    JavaScript

  3. Front-End-Web-Development-with-React Front-End-Web-Development-with-React Public

    Assignment code of (ReactJs) Coursera

    JavaScript 36 71

  4. Task-Tracker Task-Tracker Public

    A platform where you can create a tasklist (Practicing Angular :) :) )

    TypeScript

  5. Front-End-Web-UI-Frameworks-and-Tools-Bootstrap-4 Front-End-Web-UI-Frameworks-and-Tools-Bootstrap-4 Public

    HTML 1

  6. Sun_chat Sun_chat Public

    PHP 1