cv.html

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layout: default
title: CV - Kadir Ergün
permalink: /cv.html
description: "CV and experience details for Kadir Ergün."
---
<div class="cv-print-btn">
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<div class="cv-page container" id="cv-sheet">
  <header class="cv-header">
    <div class="cv-heading">
      <h1>Kadir Ergün</h1>
      <p class="cv-title">Solution Architect | Enterprise & Cloud Architecture</p>
      <div class="cv-contact">
        <a href="tel:+905071037277">+90 507 103 7277</a>
        <a href="mailto:kadirergun@yandex.com">kadirergun@yandex.com</a>
        <a href="https://linkedin.com/in/kadir-ergun" target="_blank" rel="noopener noreferrer">linkedin.com/in/kadir-ergun</a>
        <span class="cv-location">Istanbul, Turkey</span>
      </div>
    </div>
    <img src="/assets/img/kadir_ergun_profile.jpg" alt="Kadir Ergun" width="150" height="209" class="cv-photo profile-picture">
  </header>

  <section class="cv-section cv-summary">
    <h2>Summary</h2>
    <p>
Solution Architect with 10+ years of hands-on experience designing and modernizing scalable enterprise systems across global and public-sector environments. Specialized in microservices architecture, API-first design, enterprise integrations, DevOps automation, and Kubernetes-based cloud-native deployments.

Experienced in translating business requirements into resilient technical solutions, ensuring high availability, security compliance, and operational excellence across multi-environment production systems.
</p>
  </section>

  <section class="cv-section cv-technical-skills">
  <h2>Technical Skills & Architecture Expertise</h2>
  <ul class="cv-list">
    <li><strong>Enterprise Architecture:</strong> Target-State Architecture Design, Current-State Assessment, Gap Analysis, Architecture Governance aligned with TOGAF ADM, Microservices Architecture, API-First Design, Event-Driven Systems (Kafka), High Availability, Disaster Recovery, Legacy Modernization, Cloud Migration</li>
    <li><strong>Cloud & DevOps:</strong> Kubernetes (Production Workloads), Docker, CI/CD (Azure DevOps, Jenkins), Infrastructure as Code, Monitoring & Observability</li>
    <li><strong>Backend Development:</strong> Java (Spring Boot), C# (.NET Core / ASP.NET Core), RESTful APIs, Secure Authentication (LDAP, SSO), Performance Optimization</li>
   <li><strong>Databases & Search:</strong> MSSQL, MySQL, PostgreSQL, MongoDB, Redis, Elasticsearch</li>
    <li><strong>Mobile & Edge Systems:</strong> Android (Java, Kotlin), Secure API Integration, Real-time Data Synchronization</li>
    <li><strong>Additional:</strong> System Integration, Payment Gateway Integration, Multi-Environment Deployment, Technical Leadership</li>
  </ul>
</section>

  <section class="cv-section cv-experience">
    <h2>Experience</h2>

    <article class="cv-item">
      <div class="cv-item-header">
        <div>
          <div class="cv-item-title">Independent Contractor / Freelance Consultant</div>
          <div class="cv-item-company">International Remote Projects</div>
        </div>
        <div class="cv-item-meta">
          <div class="cv-item-dates">08/2025 - Present</div>
        </div>
      </div>
      <p class="cv-item-lead">Providing architecture consulting and technical implementation support for international clients.</p>
      <ul>
        <li>Designed microservices-based backend architectures for international clients</li>
        <li>Implemented containerized CI/CD pipelines and automated deployments</li>
        <li>Conducted architectural reviews and performance optimization initiatives</li>
      </ul>
    </article>


    <article class="cv-item">
      <div class="cv-item-header">
        <div>
          <div class="cv-item-title">Business Solutions Chief</div>
          <div class="cv-item-company"><a href="https://isper.istanbul" target="_blank" rel="noopener noreferrer">ISPER A.S. (Istanbul Metropolitan Municipality Subsidiary)</a></div>
        </div>
        <div class="cv-item-meta">
          <div class="cv-item-dates">01/2025 - 08/2025</div>
        </div>
      </div>
      <p class="cv-item-lead">Directed municipal digital transformation with DevOps, applications, and KPI-driven governance.</p>
      <ul>
        <li>Implemented CI/CD, IaC and Kubernetes microservices via Azure DevOps, reducing deployment time by 40% and improving release reliability to 99%+.</li>
        <li>Delivered .NET Core APIs with MSSQL/LDAP integrations adopted by 10+ internal systems, improving authentication and workflow automation.</li>
        <li>Developed 15+ Power BI KPI dashboards, reducing manual reporting effort by 60% and enabling real-time operational insights.</li>
        <li>Managed 5+ vendor contracts and service agreements, reducing external delivery delays by 25%.</li>
      </ul>
    </article>

    <article class="cv-item">
      <div class="cv-item-header">
        <div>
          <div class="cv-item-title">Engineering Manager / Architecture Owner</div>
          <div class="cv-item-company"><a href="https://www.huawei.com" target="_blank" rel="noopener noreferrer">Huawei</a></div>
        </div>
        <div class="cv-item-meta">
          <div class="cv-item-dates">07/2022 - 01/2025</div>
        </div>
      </div>
      <p class="cv-item-lead">Led development of large-scale SaaS and digital platforms including WeFocus, Petal Maps, and e.huawei.com, serving tens of millions of users globally, improving platform scalability and performance.</p>
      <ul>
        <li>Led 4 cross-functional engineering teams (backend, frontend, DevOps, QA) delivering large-scale SaaS and digital platforms across multiple regions.</li>
<li>Owned end-to-end solution architecture for multilingual distributed systems with focus on scalability, resilience, and performance optimization.</li>
<li>Designed and evolved microservices-based architecture using API-first principles and event-driven patterns (Kafka).</li>
<li>Led enterprise API strategy including versioning, gateway management, authentication, and high-throughput optimization.</li>
<li>Architected high-availability multi-region deployments, improving web and mobile uptime from 97% to 99.7%.</li>
<li>Drove DevOps transformation across 4 product teams, increasing deployment frequency by 3x and reducing production incidents by 30%.</li>
<li>Applied application security best practices including secure authentication, RBAC, and production hardening.</li>
<li>Enhanced digital customer experience through architectural modernization and system reliability improvements.</li>
<li class="cv-stack">Stack: Huawei Cloud, Spring Boot, Kafka, Kubernetes, Elasticsearch, Jenkins.</li>
      </ul>
    </article>

    <article class="cv-item">
      <div class="cv-item-header">
        <div>
          <div class="cv-item-title">DevOps & Technical Project Lead</div>
          <div class="cv-item-company"><a href="https://globalbilgi.turkcell.com.tr" target="_blank" rel="noopener noreferrer">Turkcell Global Bilgi</a></div>
        </div>
        <div class="cv-item-meta">
          <div class="cv-item-dates">01/2022 - 07/2022</div>
        </div>
      </div>
      <p class="cv-item-lead">Led DevOps operations for applications serving 2M+ customers, reducing delivery cycle time by 20%.</p>
      <ul>
        <li>Led enterprise chatbot and RPA-based automation project in banking domain, coordinating client stakeholders and internal engineering teams.</li>
<li>Designed chatbot-to-RPA workflow integrations enabling secure automation across internal banking systems.</li>
<li>Transitioned to centralized DevOps team supporting all enterprise applications.</li>
<li>Built and maintained Jenkins CI/CD pipelines and provided L3 application support across multiple projects.</li>
<li>Diagnosed and resolved build failures, dependency issues, and pipeline misconfigurations in collaboration with development teams.</li>
<li>Managed large-scale artifact repositories (Artifactory with 9M+ objects) and ensured build stability and version integrity.</li>
<li>Supported dynamic RedHat-based VM provisioning environments optimized for build workloads.</li>
<li class="cv-stack">Stack: Jenkins, Artifactory, RedHat, Java, Jira, RPA (UI Path), CI/CD.</li>
      </ul>
    </article>

    <article class="cv-item">
      <div class="cv-item-header">
        <div>
          <div class="cv-item-title">Technical Lead</div>
          <div class="cv-item-company"><a href="https://portalgrup.com" target="_blank" rel="noopener noreferrer">PortalGrup</a></div>
        </div>
        <div class="cv-item-meta">
          <div class="cv-item-dates">08/2018 - 01/2022</div>
        </div>
      </div>
      <p class="cv-item-lead">Led 40+ engineers on high-traffic e-commerce, mobile, and CMS platforms processing 10M+ monthly visits.</p>
      <ul>
        <li>Migrated enterprise platforms to Azure DevOps and implemented 40+ CI/CD pipelines across multi-environment deployments.</li>
    <li>Architected high-traffic e-commerce platforms handling 10M+ monthly visits with scalable and resilient backend design.</li>
<li>Designed secure payment gateway integrations and marketplace connectivity solutions for large-scale commerce systems.</li>
<li>Implemented API-driven integrations with ERP, CRM, and third-party enterprise services.</li>
<li>Delivered scalable digital B2B and B2C commerce architectures with performance-focused system design.</li>
<li>Improved application performance and checkout reliability under peak traffic conditions.</li>
<li class="cv-stack">Stack: Azure DevOps, Kentico, MSSQL, Java, ASP.NET MVC, CMS.</li>
      </ul>
    </article>

    <article class="cv-item">
      <div class="cv-item-header">
        <div>
          <div class="cv-item-title">Senior Android Developer</div>
          <div class="cv-item-company"><a href="https://portalgrup.com" target="_blank" rel="noopener noreferrer">PortalGrup</a></div>
        </div>
        <div class="cv-item-meta">
          <div class="cv-item-dates">03/2016 - 08/2018</div>
        </div>
      </div>
      <p class="cv-item-lead">Developed Android apps for enterprise clients; event-based and gamified experiences.</p>
      <ul>
        <li>Shipped 10+ native apps with Java/Kotlin, integrating APIs and analytics.</li>
        <li>Collaborated on design, development, and releases for production.</li>
      </ul>
    </article>

    <article class="cv-item">
      <div class="cv-item-header">
        <div>
          <div class="cv-item-title">Software Developer</div>
          <div class="cv-item-company">Meryüz Bilisim</div>
        </div>
        <div class="cv-item-meta">
          <div class="cv-item-dates">12/2014 - 02/2016</div>
        </div>
      </div>
      <p class="cv-item-lead">Built full automation for textile manufacturing plus Android terminal and server.</p>
      <ul>
        <li>Designed Android + backend for real-time tracking and digitization for 500+ device across production lines.</li>
        <li>Contributed to <strong>CepCard</strong>, a secure mobile payment/wallet system.</li>
      </ul>
    </article>

    <article class="cv-item">
      <div class="cv-item-header">
        <div>
          <div class="cv-item-title">Freelance Software Developer</div>
          <div class="cv-item-company">Independent</div>
        </div>
        <div class="cv-item-meta">
          <div class="cv-item-dates">2009 - 2014</div>
        </div>
      </div>
    </article>

  <section class="cv-section cv-education">
    <h2>Education</h2>
    <p><strong>Isik University</strong> — Associate of Arts and Sciences (A.A.S.), Management Information Systems (2008-2013)</p>
  </section>

  

  <section class="cv-section cv-languages">
    <h2>Languages</h2>
    <ul class="cv-list">
      <li>English — Upper Intermediate</li>
      <li>German — Basic</li>
      <li>Turkish — Native</li>
    </ul>
  </section>

  <section class="cv-section cv-certificates">
    <h2>Certificates</h2>
    <ul class="cv-list">
      <li><strong>Atlassian Agile Project Management Professional Certificate</strong> — Atlassian, 2024</li>
      <li><strong>AI for Managers</strong> — Microsoft & LinkedIn, 2024</li>
      <li><strong>Become an AI-Powered Manager</strong> — LinkedIn, 2024</li>
      <li><strong>Scrum: The Basics</strong> — LinkedIn, 2024</li>
      <li><strong>Kentico Certified Developer (Kentico 12)</strong> — Kentico, 2019</li>
    </ul>
  </section>


  <section class="cv-section cv-awards">
    <h2>Awards</h2>
    <p>Huawei Sparkling Star Award — Dec 2023</p>
  </section>


  <section class="cv-section cv-projects">
    <h2>Projects</h2>
    <ul class="cv-list">
      <li>WeFocus SaaS — Enterprise engagement platform used by 20K+ employees; architected with Java microservices, Kubernetes and VueJS.</li>
      <li>KoçAilem Loyalty — 200K+ users; C#, Kentico, SSO, DevOps pipelines.</li>
      <li>Fenerium / Avis / Budget — High-traffic e-commerce platforms with payment integrations and personalized recommendation systems.</li>
      <li>More projects: <a class="inline-link" href="https://kadirergun.com/projects.html" rel="noopener noreferrer">kadirergun.com/projects.html</a></li>
    </ul>
  </section>
</div>