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Kaung Sett Hein

@kaungsetthein

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Experienced backend developer specializing in scalable C# and .NET Core systems.

Netherlands

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What I'm looking for

I seek backend or full-stack roles focused on scalable systems, CI/CD-driven teams, microservices, and opportunities to mentor while working in collaborative, agile environments.

I am an experienced backend developer with 5+ years building scalable, high-performance applications using C#/.NET Core and Java (Quarkus/Spring Boot). I deliver reliable distributed systems, RESTful APIs, and microservices, emphasizing PostgreSQL optimization, Docker containerization, and CI/CD automation.

I consistently apply TDD and automated pipelines to improve quality and release stability, and I collaborate effectively in agile, cross-functional teams. My work has improved user engagement, reduced recurring data issues, and strengthened backend infrastructure across international remote and hybrid environments.

Experience

Work history, roles, and key accomplishments

Backend Developer

Phinion

Nov 2024 - Oct 2025 (11 months)

Developed and maintained backend services using Quarkus and Hibernate, optimized PostgreSQL queries with CTEs, and implemented email and messaging integrations (Microsoft Graph, Twilio) while enforcing TDD to improve reliability and release stability.

Quarkus Hibernate PostgreSQL Mockito Docker SMTP Twilio

Full Stack Developer

Technopro Engineering

Jun 2023 - May 2024 (11 months)

Reviewed and tested a .NET/MySQL application with a React frontend, debugging SQL and backend logic to reduce recurring data issues by ~15% and backend defects by ~10%.

C++.NET MySQL React Backend Testing Data Processing

Full Stack Developer

Fusion Solution Co., Ltd

Jul 2020 - Aug 2022 (2 years 1 month)

Led UI/UX and frontend development with Vue.js across three web apps, increased user engagement by 25%, and improved data retrieval and backend infrastructure using C#, ASP.NET Core, and EF Core.

Vue.Js C++ASP.NET Core RESTful APIs JWT OAuth Frontend Performance Optimization

Software Engineering Intern

Thorium Co., Ltd

Aug 2019 - Jun 2020 (10 months)

Assisted in application design and relational database modeling, developed internal apps using C#, ASP.NET MVC/.NET Core, and built responsive UIs improving the company's web portfolio.