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Seasoned .NET and distributed-systems engineer with 20+ years of experience delivering C#, .NET Framework, .NET Core, C++17, and Rust solutions across medical imaging, audio rendering, and industrial domains.
Specialized in architecting ASP.NET Web API and TCP services alongside high-performance WPF (MVVM + async) and Qt/QML applications, embedding microservices patterns and secure data workflows.
Lead cross-functional teams to modernize legacy platforms onto .NET Core, harden CI/CD pipelines, and deliver measurable performance gains in regulated environments.

• Backend & Distributed Systems: C++17, C#, Rust, Go; multithreaded TCP socket design; RabbitMQ; RESTful microservices; PostgreSQL/Redis performance tuning.
• .NET & UI Engineering: C#/.NET Framework, .NET Core, ASP.NET Web API, WPF (MVVM, async-await), Qt/QML; IIS-hosted services; reusable SDK/API delivery for clinical devices.
• Cloud & DevOps: AWS, Docker, GitHub Actions; automated CI/CD for containerized workloads; observability, incident response, and infrastructure-as-code adoption.
• Leadership & Delivery: Project planning, roadmap ownership, mentoring; rapid technology adoption and structured knowledge sharing.

• Directed end-to-end architecture for an audio rendering SaaS, orchestrating C++/Rust control services with Go schedulers, Python data pipelines, and Dockerized workers on AWS.
• Established an AWS-hosted CI/CD pipeline with GitHub Actions and infrastructure templates, enabling daily release cadence and zero-downtime rollouts.
• Designed REST integration layers and runtime observability to sustain sub-second orchestration latency while coordinating cross-team incident drills for SLA compliance.

• Engineered C#/.NET Framework and C++ TCP services plus ASP.NET Web API endpoints hosted on IIS to unify PACS workflows, third-party integrations, and viewer connectivity.
• Led the migration from a monolith to hybrid .NET Core + C++ microservices with containerized deployments, doubling effective imaging throughput via lossless compression (7→15 MB/s @ 100 Mbps; 70→150 MB/s @ 1 Gbps) and cutting server-to-viewer latency by 50% (50→25 ms), while keeping CPU overhead ≤30%.
• Introduced WPF MVVM with async-await/TPL patterns and reusable component libraries to streamline radiology UI operations and improve technician productivity.

• POSTECH — Lead Programmer (Mar 2022 – Oct 2022): Built Docker-based TCP data acquisition system using C++/Python to optimize resource usage in distributed research instrumentation.
• Tilon — Senior Researcher (Jul 2009 – Dec 2009): Delivered C++03 VNC modules for LG monitor control, visualizing network health in real time.
• VATECH — Software Engineer (Oct 2004 – Jul 2009): Developed C++/C# UI and reporting tools for dental imaging, integrating visualization, database back-end, and document workflows.

• Network Architecture: TCP/IP, WebSocket, REST API, Distributed Systems
• Medical Imaging: PACS, DICOM (ISO 13485 compliant)
• UI Frameworks: WPF, Qt/QML, Shader Programming
• DevOps: Docker, GitHub Actions, Git, Linux, CI/CD Pipelines
• Testing: GTest, xUnit, PyTest

Bachelor of Science in Electronic Engineering
Inje University | 1997 - 2005

English: Conversational (OPIC IM2, IELTS 6.0)

• 🌟 Lead onboarding and code reviews around .NET/C++ best practices to elevate team capabilities.
• 🤝 Foster flexible development culture responsive to technological changes and stakeholder needs.
• 📊 Strengthen team expertise through living technical documentation and structured review processes.
• 🎯 Enhance project success rates via collaborative problem-solving and data-driven milestone tracking.

• 📧 Email: kcenon@gmail.com
• 💼 LinkedIn: linkedin.com/in/raphaelshin

"Committed to continuous innovation and growth through multi-platform expertise, robust network architecture design, intuitive UI development, and systematic quality management."