Halil Bozdogan

Senior Software / DevOps Engineer
Ankara, Turkey | halilbozdogan@gmail.com | halilbozdogan.com
GitHub | LinkedIn

Summary

Senior DevOps Engineer with over 15 years of experience transitioning from .NET software architecture to cloud-native infrastructure. Expert in modernizing legacy systems, managing high-traffic Kubernetes clusters (handling 70k RPS), and automating complex CI/CD pipelines. Proven track record of bridging the gap between development and operations to improve system reliability, performance, and developer velocity.

Technical Skills

Development & Core Cloud
C# / .NET
Kubernetes
Docker
Azure
KEDA KEDA
NGINX
CI/CD & Orchestration
Octopus Deploy Octopus
TeamCity TeamCity
GitLab CI
Azure DevOps
Data & Observability
RabbitMQ
Couchbase
SonarQube
SQL Server
Redis
New Relic New Relic
Sentry Sentry
Prometheus
ELK Stack

Certifications

Certified Kubernetes Administrator (CKA) Cloud Native Computing Foundation (CNCF) — Issued Nov 2024

Experience

Senior DevOps Engineer — Nesine
May 2023 – Present
Turkey's Leading Legal Online Betting & Gaming Platform
Key Challenge: Mission-Critical Scale I orchestrated the 24/7 zero-downtime infrastructure for Turkey's largest betting platform, ensuring 99.99% availability and real-time data consistency with minimal latency during high-traffic live sports events.
  • Advanced Autoscaling: Implemented KEDA for event-driven autoscaling, configuring dynamic pod scaling based on RabbitMQ queue depth and custom ASP.NET Core metrics.
  • Kubernetes Migration: Led the full migration from VM-based deployments to Kubernetes using Docker Buildx (Bake), Octopus Deploy, and TeamCity.
  • High-Scale Operations: Managed resilient infrastructure ensuring uninterrupted service for millions of transactions during high-concurrency windows.
  • CI/CD Architecture: Implemented Octopus Kubernetes Agents and GitLab Kubernetes Runners for isolated build execution.
  • Observability: Developed New Relic dashboards for real-time system visibility and deployed self-hosted Sentry for frontend monitoring.
  • Tooling: Built a Blazor-based internal application to monitor Octopus/TeamCity pipelines and deployed custom NGINX reverse-proxies for centralized logging and caching.
  • Code Quality: Deployed and managed SonarQube instances, integrating them into CI/CD pipelines to enforce quality gates and static analysis automatically.

Senior Software Engineer — Enocta
Jul 2022 – Apr 2023
Turkey's Sector Leader in LMS & Digital Learning Solutions
  • Identified and resolved performance bottlenecks in core Web API services.
  • Designed multi-timezone operational features for international users.
  • Migrated source control from TFS to Git and implemented Azure DevOps pipelines.

Senior Software Engineer — Tiga Bilgi Teknolojileri
Dec 2015 – Jul 2022
Global HealthTech Provider Specializing in National-Scale Digital Health Solutions
Key Project: National Health System (e-Nabiz) Architected the backend for Turkey's Personal Health Record System, serving 6 million+ patients. Managed Couchbase clusters (>20TB data) and handled 1M+ daily requests.
  • Modernization: Led containerization of legacy Windows Service applications to Kubernetes (MetalLB, NGINX-Ingress, Harbor).
  • Code Quality Assurance: Deployed and maintained SonarQube servers to perform continuous inspection of code quality and security vulnerabilities across public sector projects.
  • System Integration: Designed fault-tolerant integrations for diagnostic imaging and external systems.
  • Software Evolution: Modernized .NET Core apps from 2.x to LTS versions and refactoring complex codebases.
  • DevOps Implementation: Established CI/CD workflows using TFS and on-premises Kubernetes clusters.

Senior Software Engineer — CLF IT Consulting
Apr 2014 – Oct 2015
Defense & Security Technology Consultancy
  • Developed a high-performance non-blocking web server for custom messaging integrations.
  • Collaborated on resilient systems for classified military projects (Security Clearance obtained).

Software Engineer — Anadolu Agency
Dec 2013 – Feb 2014
Turkey's Global News Agency & Information Network
  • Designed Windows/Web services to integrate third-party systems into national news infrastructure.

Application Development Consultant — Innova
Sep 2008 – Dec 2013
Leading Systems Integrator & Software Solutions Provider (Türk Telekom Subsidiary)
  • Conducted requirements analysis and system design for enterprise applications.
  • Developed shared frameworks to optimize legacy libraries and performance.
  • Mentored interns and junior developers on coding standards and best practices.

System Support Chief — Demir Export A.S.
Oct 2007 – Aug 2008
Major Mining & Industrial Company (Koç Holding)
  • Administered Windows Server and Active Directory infrastructure.
  • Deployed and customized SharePoint-based collaboration environments.

Selected Projects

Education

Hacettepe University — Computer Education and Instructional Technologies
Dec 2001 – Dec 2005 | GPA: 3.13 / 4.0