Thodsaphon Sonthiphin

Senior full-stack engineer with 7+ years of experience delivering enterprise web applications across C#/.NET, React/TypeScript, SQL Server, Azure, and Microsoft Dataverse. Leads AI-augmented engineering workflows with Claude Code and builds reusable agent skills, validation scripts, review gates, and MCP/LLM-integrated product capabilities. Owns the full SDLC from business requirements and architecture through implementation, automated testing, CI/CD, deployment, production debugging, and user support.

Consultant / Full-stack Engineer at Cartagena Thailand (2025-01 – Present)

Own enterprise features from requirement discussions through architecture, implementation, testing, release, production debugging, and user support across shipping/logistics and grant-management products.

• Build a B2B shipping portal with React 19, TypeScript, Redux Toolkit, MUI, ASP.NET Core (.NET 10), REST APIs, and Microsoft Dataverse as the system of record.
• Implemented end-to-end RBAC across Dataverse role and permission entities, API authorization attributes, and React route/component guards.
• Integrated Microsoft identity using MSAL and Microsoft.Identity.Web; built Azure Functions for identity and Dataverse synchronization.
• Deliver rich data-grid workflows, validation rules, unit conversion, and complex business processes for global shipping operations using React, MUI X, OData/FetchXML, and Dataverse.
• Maintain automated tests and CI/CD pipelines for Azure-hosted frontend and backend services; troubleshoot releases and production issues across application and Dataverse boundaries.
• Apply Claude Code in planning, implementation, refactoring, and review while retaining human ownership of technical decisions and validating changes with tests and repository checks.

Full Stack Developer at Krungsri Asset Management (2024-05 – 2024-12)

Designed solutions, selected frameworks, estimated delivery, led weekly requirement discussions, and delivered customer profile, search, and permission features using.NET and Entity Framework Core.

• Introduced Git and GitFlow practices and trained developers; configured IIS and Windows Server for deployment..NET Developer at Kasikorn Business-Technology Group (KBTG) (2023-03 – 2024-04)

Built React and ASP.NET MVC features for internal systems, integrated Microsoft 365 sign-in, and coordinated Microsoft Graph work between internal teams and vendors..NET Developer at Expertise Co., Ltd. (2020-11 – 2023-02)

Maintained VB.NET Web Forms and ASP.NET MVC applications, implemented an IdentityServer4 OIDC/OAuth 2.0 service, and built React/TypeScript interfaces.

Programmer at Evolix Co., Ltd. (2018-11 – 2020-10)

Customized Dynamics 365 and SharePoint solutions, developed SSRS/C# reports and ASP.NET Web Forms applications, and supported Windows and SQL Server infrastructure.

Bachelor of Science in Computer Science – Ramkhamhaeng University

Diploma in Computer Graphics – Trat Polytechnic College