Sarawut Saepang

Senior Software Engineer with 7+ years of experience across backend, full-stack development, database architecture, cloud infrastructure, deployment, and production support. Experienced in building enterprise web applications, RESTful APIs, microservices, authentication systems, real-time communication platforms, and cloud-native services using C#, .NET, Node.js, PostgreSQL, SQL Server, GCP, and AWS. Strong background in database design, query optimization, performance tuning, troubleshooting, production incident investigation, and technical decision-making.

SENIOR DEVELOPER BACKEND (CONTRACT) - Abbon Corporation co., ltd.

(2025-01 - 2026-12)

• Design and develop backend services using AdonisJS, NestJS, PostgreSQL, and GCP.
• Design database schemas, indexes, foreign key relationships, and transaction workflows.
• Built authentication and authorization systems using Firebase Authentication and JWT.
• Developed queue-based processing using Pub/Sub and Cloud Run workers.
• Implemented WebSocket communication for real-time live streaming and chat features.
• Designed and maintained BigQuery integrations, scheduled data pipelines, and automated synchronization.
• Investigated production incidents, analyzed logs, identified root causes, and improved reliability/performance.
• Participated in architecture discussions, code reviews, and technical decision-making.

SENIOR SOFTWARE ENGINEER (FULL STACK) - Applicad Public Company Limited.

(2018-01 - 2025-12)

• Designed and developed enterprise web applications using C#, ASP.NET MVC, .NET Core, Node.js, React, and Next.js.
• Designed database schemas and developed SQL Server Stored Procedures, indexes, and performance optimization solutions.
• Built and maintained RESTful APIs, ERP integrations, and payment gateway integrations.
• Developed responsive web applications using Bootstrap, Tailwind CSS, JavaScript, and jQuery.
• Led full project development from database design through deployment and production support.
• Managed application deployment and maintenance on IIS and Windows Server.
• Performed database migration, backup, recovery, and large-scale data correction processes.
• Worked with AWS, Firebase, PostgreSQL, SQL Server, and cloud-based services in production environments.

Bachelor of Information Technology - Information Technology - Nakhon Pathom Rajabhat University (2014-01 - 2017-12)