Architecture Manifesto // v2.0

UĞURHAN GÜL
ARCHITECTING
AT SCALE

Experience
12+
Years
Led Up To
13
Developers

Senior Full Stack .NET Developer and Technical Lead with 12+ years of experience designing and delivering AI-enabled, large scale enterprise systems. Strong hands-on expertise in Clean Architecture, Microservices, .NET 10, and Event-Driven Architecture, contributing to large scale platforms for Turkcell, Hepsiburada, Vodafone, Ziraat Bank, TOFAŞ/FIAT, Hyundai, Arçelik, and AssisTT. Specialized in AI systems integration (LLM/VLM, MCP servers, self-hosted AI inference, Deep Reinforcement Learning), high performance backend platforms, and aerospace compliance tooling (AS9100, EN 10204). Led frontend and backend engineering teams of up to 13 developers. Managed technical delivery across 98 enterprise projects in 13 industries.

ugurhangul@gmail.com github.com/ugurhangul
12+
Data Migrated
150M+
Rows, Zero Data Loss
Migration Time
~70%
Less (Projected)
Scale
25+
Banking Sites, 10+ Countries
Team Size
Up to 13
Developers Led

Core Competencies // Stack

TECHNICAL
ARSENAL

.NET 10 Distributed Systems AI & LLM Integration Event-Driven Architecture Docker & CI/CD Microservices

Professional Timeline // Engineering

BATTLE-TESTED
EXPERIENCE

Independent Software Engineer / Consultant

Self-Employed

Jan 2026 — Present
Kocaeli, Türkiye · Remote

Key Outcomes

  • Enterprise Aerospace Compliance Platform: 13-project .NET 10 modular monolith extracting 22 document types, with deterministic NRules validation across 47 rule classes and 2,600+ tests.

  • DropXML: Multi-tenant SaaS on 9 event-driven .NET services, 1,047 commits across 13 repositories. Extended into Pax Mercatus, an SEO analysis backend with seven analyzers behind a multi-provider AI layer.

  • YouTrack MCP Server: Open source Model Context Protocol server for JetBrains YouTrack.

Senior Full Stack .NET Developer

Kafein Technology Solutions

Sep 2024 — Dec 2025
İstanbul, Türkiye · Hybrid

Key Outcomes

  • Turkcell Data Migration: Architected a .NET 9 migration engine processing 150M+ rows with zero data loss, reducing projected migration time by approximately 70%.

  • Hepsiburada & Vodafone: Go + .NET multi-tenant content services on Kafka and MongoDB; cut new widget onboarding from days to hours.

  • AssisTT Workforce: Workforce planning module (.NET, Erlang, AngularJS) automating KPIs and eliminating 20+ hours/week of manual reporting and planning work.

Senior Software Developer / Team Lead

Clockwork Agency

Oct 2019 — Sep 2024
Kocaeli / İstanbul, Türkiye · Remote

Key Outcomes

  • Technical Leadership: Led frontend and backend engineering teams of up to 13 developers; managed technical delivery across 98 enterprise projects in 13 industries; architected the Umbraco/.NET framework for 100+ client websites (five upgrades, v8 to v13), reducing setup time from 2 weeks to 2 days.

  • Security Hardening: Led security remediation across banking and government projects, fixing 30+ critical vulnerabilities (CSP, encryption, server-side CAPTCHA) in ISO 27001 scoped environments.

  • TOFAŞ / FIAT Online Sales: .NET 6 to .NET 8 backend shared by FIAT, Alfa Romeo and Jeep APIs, Iyzico payments, 12-state order lifecycle.

  • Global Scale: Ziraat Bank core architecture running 25+ banking websites across 10+ countries.

Full Stack .NET Developer

Bank Software Solutions

Dec 2015 — Jul 2019
Kocaeli, Türkiye

  • Maritime Automation: Digitized port operations with a 7-project solution, automating 30+ official maritime templates.

  • Custom proforma formula engine, real-time vessel tracking and Bosphorus Strait monitoring with SignalR, WCF and REST integrations.

.NET MVC Developer

Pavlike Web Applications and Solutions

Apr 2015 — Nov 2015
Kocaeli, Türkiye

Developed and maintained ASP.NET MVC web applications; took part in requirements analysis and resolved compatibility and integration issues.

.NET Web Developer

Piyasa Group

Aug 2014 — Oct 2014
Kocaeli, Türkiye

Developed backend web application components and database structures; reviewed and debugged existing code; resolved application defects and technical issues.

Web Developer

LuckyEye

May 2014 — Jun 2014
Kocaeli, Türkiye

Developed and maintained corporate websites with HTML, CSS, JavaScript and jQuery; resolved scripting and frontend issues.

Junior Web Developer

Revo Bilişim

Dec 2012 — Jun 2013
Kocaeli, Türkiye

Supported web application operations; monitored and investigated database and application performance issues.

Software Development Intern

Türkiye İş Bankası

Sep 2011 — Jun 2012
İstanbul, Türkiye

Software development internship in an enterprise technology environment; supported software and technology operational processes.

Industry Experience

Sectors I've delivered for across 98 projects in 13 industries

Verified Evidence // GitHub

CONTINUOUS
DELIVERY

Case Studies // Projects

ENGINEERING
SOLUTIONS

Credentials // Foundation

ACADEMIC &
PROFESSIONAL

LinkedIn Learning
Software Architecture: From Developer to Architect
Certificate // 2026
LinkedIn Learning
Advanced Design Patterns: Design Principles
Certificate // 2026
Anadolu University
Management Information Systems
Undergraduate coursework // 2020 — 2024
Kocaeli University
Computer Software Technology
Associate Degree // 2012 — 2015 · GPA 3.27 / 4.00
Kartepe Industrial Vocational High School
Computer Science
2008 — 2012

Compliance & Security

ISO 27001 (Information Security), 37001 (Anti-Bribery), 22301 (Business Continuity) — Kafein Technology Solutions, 2024

Mastership Certificate

Mastership Certificate — Computer Programming

Languages

Turkish: Native · English: Professional Working Proficiency (C1)