TRAKANSAK JUNGTRAKARN
C# .NET Developer
Bangkok
Summary
Experienced with developing and maintaining complex.NET Applications. Utilizes in-depth knowledge of C# and ASP.NET to create efficient, scalable solutions. Strong understanding of software development lifecycle and best practices, ensuring high-quality deliverables and continuous system improvements.
Results-driven software developer with deep understanding of.NET framework and application development. Known for delivering clean, efficient code and enhancing system performance through effective debugging and troubleshooting. Strong team player with focus on achieving project goals and adapting to evolving requirements, ensuring seamless project execution and delivery.
Overview
2026
2026
years of professional experience
4
4
Languages
Work History
Intermediate .NET Developer
PTT Public Company
2025 - Current
- Enhanced application performance by optimizing .NET code and implementing best practices.
- Mentored junior developers by sharing knowledge and providing guidance on best practices in .NET development.
- Demonstrated adaptability by quickly learning new technologies as required for specific projects, resulting in seamless integration into the development team.
- Increased system efficiency by identifying bottlenecks and deploying appropriate bug fixes in a timely manner.
- Integrated APIs into existing applications for seamless communication between different systems, resulting in enhanced functionality.
- Implemented secure authentication and SSO with Azure AD and Azure AD B2C using OpenID Connect/OAuth 2.0 and MSAL, enforcing MFA and role-based access control.
- Configured Azure AD B2C user flows/custom policies (sign‑in/sign‑up, password reset, profile edit) and integrated social identities as needed.
- Delivered an Work Permit system covering inspection checklists, work permit requests, training records, and multi-step approvals with audit trails.
- Orchestrated end‑to‑end workflows with validations, notifications/escalations, and reporting, integrating with existing APIs and SQL Server for data integrity.
- Reduced maintenance costs with thorough documentation of code, processes, and systems architecture.
- Assisted in designing database schema and writing stored procedures for efficient data manipulation using SQL Server.
- Tested and deployed scalable and highly available software products.
- Performed vulnerability patching and investigated and mitigated system weaknesses.
- Improved application security by implementing secure coding techniques and following OWASP guidelines during development phases.
Full Stack Developer
Epic Consulting Co., Ltd.
2023 - 2025
- AIS FBB: Developed and maintained various management systems for technicians, including training management systems, personal record systems, and budget tracking tools. These systems allowed AIS to efficiently manage technician data and improve the overall management process.
- AIS OVMS (Outsource Vendor Management System): Built and enhanced features for managing outsourced employees and vendors. The system tracks employee budgets, work status, access logs, and PO/PI tracking, significantly improving the accuracy and efficiency of managing outsourced operations.
- AIS Fibre: Led the integration of AIS Fibre systems with 3BB, allowing customers to utilize AIS's infrastructure and services. This integration enhanced customer options and improved the user experience by leveraging existing systems and resources.
- Ministry of Transport: Developed a disaster management website to track and display real-time updates on national disasters, improving government response time and information dissemination to the public.
- NBTC: Contributed to the development of the NBTC Automatic Frequency Monitoring System, automating the monitoring of radio frequencies to ensure compliance with national regulations and improving the accuracy and efficiency of frequency tracking.
- Reviewed code, debugged problems, and corrected issues.
- Developed functional databases, applications and servers to support websites on back-end.
C#.NET Programming
Rainbow Solution
01.2019 - 01.2023
- Developed and maintained Smile Dining, a web application for managing Thai restaurants in the U.S., using ASP.NET Core, C#, and SQL Server, enhancing user experience and operational efficiency for restaurant owners.
- Led the development of Smile POS, a Windows-based Point of Sale (POS) system, streamlining transaction processes for restaurant staff, improving order management and payment systems using C# and WPF.
- Integrated online ordering and delivery management features into the Smile Dining platform, increasing customer convenience and boosting client revenue by 20%.
- Integrated with third-party delivery services such as Grubhub and DoorDash, enabling seamless order syncing between the Smile Dining platform and external delivery systems, reducing manual entry and improving order accuracy.
Education
Bachelor of Science - Computer Engineering
King Mongkut's University of Technology North Bang
01.2019
Skills
C# Net Core, C# Net Framework
Web API development
Entity framework
JavaScript and jQuery
LINQ queries
Databases: Oracle, SQL Server
undefinedTimeline
C#.NET Programming
Rainbow Solution
01.2019 - 01.2023
Intermediate .NET Developer
PTT Public Company
2025 - Current
Full Stack Developer
Epic Consulting Co., Ltd.
2023 - 2025
Bachelor of Science - Computer Engineering
King Mongkut's University of Technology North Bang
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