Kadir Ergun

Work Experience

• Business Solutions Chief | İSPER A.Ş. (Istanbul Metropolitan Municipality Subsidiary) | Istanbul, Turkey | Jan 2025 – Present

  Leading digital transformation and enterprise solution strategies across municipal services. Managing ERP operations, DevOps practices, internal software development, KPI frameworks, and vendor coordination in alignment with strategic objectives.

  • Developed and fine-tuned an organization-specific Large Language Model (LLM) called ISPER-LLM tailored for internal use cases such as email summarization, policy interpretation, and knowledge retrieval from structured and unstructured corporate data.
  • Designed and deployed AI-powered assistants using Retrieval-Augmented Generation (RAG) architecture to extract contextual insights from Outlook-based correspondence and internal documentation.
  • Enabled automated suggestion and summarization systems integrated with institutional knowledge bases, increasing employee efficiency and response accuracy.
  • Built training pipelines and prompt engineering workflows to align the model’s outputs with domain-specific language and regulations.
  • Implemented a comprehensive DevOps strategy, including CI/CD pipelines, infrastructure as code (IaC), and container orchestration using Kubernetes, enhancing deployment efficiency and system reliability.
  • Led the end-to-end implementation and customization of Logo ERP, including J-HR and J-Platform modules, integrating with municipal operations.
  • Oversaw internal development teams in delivering .NET Core–based applications integrated with MSSQL and LDAP authentication mechanisms.
  • Planned and deployed Kubernetes-based microservices for internal APIs, enhancing scalability and resilience across systems.
  • Managed CI/CD pipelines and DevOps environments using Azure DevOps, facilitating automatic deployments across staging and production environments.
  • Designed and implemented Power BI dashboards for operational and financial reporting, enabling real-time decision-making across departments.
  • Developed and maintained 3rd party integrations, including national utility APIs, e-signature systems, and authentication providers.
  • Drafted, reviewed, and negotiated software-related contracts and technical specifications (şartnameler), ensuring legal and operational alignment.
  • Established KPI tracking systems for software team performance, service request fulfillment, and system reliability metrics.
  • Directed procurement procedures, vendor assessments, and contract management in accordance with public sector requirements.
  • Coordinated cross-departmental collaboration between business units, IT support, and software developers to ensure efficient solution delivery.
  • Promoted Agile methodologies, conducted sprint reviews, and managed backlogs through Jira and SharePoint–based workflows.
  • Technologies Used: .NET Core, MSSQL, LDAP, Kubernetes, Helm, Argo CD, Bitnami Charts, NGINX Ingress, Docker, GitLab CI/CD, GitHub Actions, Git, Swagger, RESTful API, Keycloak, Kafka, Redis, Power BI, Qlik Sense, SonarQube, IIS, Azure DevOps (IaaS & Pipelines), Jenkins, Linux, Windows Server, PDFSharp, Bixolon, CPCL, Node.js, Outlook API, SMTP, Steganography, AES-256, ExcelJS, JavaScript, C#, Python, HTML/CSS, WhatsApp Cloud API, QR Code Libraries, OpenAI API, Azure OpenAI, Hugging Face Transformers, LangChain, Pinecone, FAISS, FastAPI, Streamlit

• Engineering Manager | Huawei | Istanbul, Turkey | Jul 2022 – Jan 2025

  Leading the development of large-scale projects, including employee engagement platforms and navigation services.

  • WeFocus SaaS Application: Developed a microservices-based employee engagement platform using Java, VueJS, MongoDB, PostgreSQL, Kubernetes, and Istio. Improved platform performance by 30%.
  • Petal Maps: Led the development of Petal Maps, a navigation app for HarmonyOS, Android, and iOS, using Spring Boot, MyBatis, Kafka, Hibernate, and Redis.
  • EBG (e.huawei.com) E-commerce B2B Multilingual Website Project: Led custom CMS development for Huawei’s B2B e-commerce platform, handling multilingual capabilities.
  • Additional Contributions:
    • Custom CMS development tailored for Huawei’s needs.
    • System engineering, requirement transfer, and problem-solving, including vendor management.
    • Created High-Level Design (HLD) documents to capture and document specific project requirements.
  • Technologies Used: Spring Boot, Microservices, ElasticSearch, NLP, Restful, Kafka, Kubernetes, MySQL, MongoDB, Jenkins.

• Senior Product Manager | Turkcell Global Bilgi | Istanbul, Turkey | Jan 2022 – Jul 2022

  Managed DevOps operations for critical applications and led chatbot development using robotic process automation (RPA).

  • Garanti BBA Banking Chatbot: Project management support, focusing on RPA coding and UI Path automation.
  • Technologies Used: Jenkins, Java, RedHat, MacOS, Jira, RPA (UI Path), Agile Methodologies.

• Technical Lead | PortalGrup | Istanbul, Turkey | Aug 2018 – Jan 2022

  Led a team of 40+ members, including Frontend, Backend, and Mobile teams, working on high-traffic e-commerce platforms, mobile applications, and CMS development. Managed complex system integrations, payment systems, and marketplace connections while maintaining high code quality and adhering to SOLID principles.

  • KoçAilem: Loyalty application for Koç Holding employees and families, with 200K+ users.
  • Fenerium E-Commerce Website: Developed an e-commerce platform for Fenerbahçe fans, focusing on personalized recommendations and payment integration.
  • Fenerbahçe Sports Club (fenerbahce.org): Led the development of the official website for Fenerbahçe Sports Club, providing live updates, membership information, and ticketing integration.
  • Ford Turkey (ford.com.tr): Managed the development of the official website for Ford Turkey, focusing on seamless navigation, car model display, and dealer locator functionality.
  • Divan Group E-Commerce Website: Created the e-commerce platform for Divan Hotels and Divan Pastaneleri.
  • E-DNA Android App: Developed E-DNA Android app for Eczacıbaşı, delivering educational content to healthcare professionals.
  • Implemented infrastructure and application installations on Azure DevOps IaaS (Infrastructure as a Service), managing server configurations and deployments across environments.
  • Migrated the entire system to Azure DevOps and built CI/CD pipelines for all environments (development, staging, production), ensuring automated deployments and continuous integration.
  • Technologies Used: Azure DevOps, IaaS, Pipelines, Kentico, Azure DevOps, MSSQL, Java, ASP.NET MVC, CMS, Agile Methodologies.

• Senior Android Developer | PortalGrup | Mar 2016 – Aug 2018

  Developed Android applications for major clients like Bayer, focusing on event-based applications and gamification.

  • Zubizu QR Event App: Created a QR-based event application for seamless user experiences.
  • Bayer Cropscience App: Developed Android solutions for agriculture and environmental management.
  • E-DNA Android App: Delivered a comprehensive mobile platform for Eczacıbaşı, used in healthcare education.
  • Technologies Used: Android Development, Java, Kotlin, Mobile App Development.