KELBIN
Fullstack Developer
Fullstack Developer with 10+ years of experience building and modernizing enterprise systems. Strong expertise in .NET ecosystems paired with Vue.js and JavaScript for frontend development. Proven ability to deliver measurable improvements from drastically optimizing SQL query performance to implementing SSO frameworks with OpenIdDict(Oauth2/OpenID). Skilled in cloud development (Google Cloud and Azure) and establishing CI/CD pipelines that improve deployment reliability. Combines hands-on technical depth with the ability to translate business requirements into scalable, secure solutions.
10+
Years Experience
31
Level
Skills & Technologies
Backend
.NET
C#
VB.NET
JavaScript
SQL
Dapper
EF Core
REST API
SOAP API
Hangfire
Frontend
Vue.js
Blazor
ASP.NET MVC
Razor Pages
WinForms
PWA
Database
MS SQL Server
PostgreSQL
Performance Tuning & Indexing
Cloud & DevOps
Google Cloud
Azure
CI/CD
Docker & Containerization
Attlasian Bitbucket
Attlasian Bamboo
Git
GitHub Actions
Security & Identity
OAuth2
OpenID
SSO
OpenIdDict
JWT
2FA
TOTP
Work Experience
Fullstack Developer
SHIMANO • Singapore
Oct 2022 - Present
- Develop and optimize MES and Logistics systems utilizing a hybrid stack of .NET 8/Core, legacy .NET Framework, and Vue.js, building scalable and performant systems
- Developed a centralized Single Sign-On (SSO) framework using OpenIddict (OAuth2 and OpenID), integrated with 2FA and TOTP for enhanced multi-factor authentication, reducing support overhead for login related issues by 30%
- Achieved a 99.9% uptime for critical manufacturing processes by migrating legacy workflows to Google Cloud (GCP), leveraging Cloud Run Functions and Application Integration
- Revamped the SDLC by implementing a Feature Branching strategy and CI/CD pipelines, reducing code conflicts by 80% and enhancing deployment reliability across SEA and China
- Refactored Reporting T-SQL queries, achieving a 99% execution speed improvement (hours to seconds) by analyzing execution plan and applying proper indexing
- Developed automated data integration solutions synchronizing SharePoint and Caspio platforms data to SQL Server using .NET 8 and RESTful APIs, enabling audit trail capabilities
Full Stack Developer
ANACLE • Singapore
Dec 2021 - Oct 2022
- Managed and modernized the ANACLE Simplicity system, supporting the Enterprise Asset Management (EAM) module across ASP.NET Web Forms, Web API, and Xamarin Forms
- Transitioned infrastructure to H-Cloud environment, ensuring seamless data exchange and application functionality across restricted internet and intranet zones
- Integrated 2FA and Google Maps services within high-security environments by managing whitelist requests and implementing local library referencing for blocked JavaScript assets
Full Stack Developer
Business Connectivity • Singapore
Dec 2019 - Dec 2021
- Engineered enterprise-scale web applications using ASP.NET Core, C#, and JavaScript, delivering high-performance backend logic and responsive UI components
- Migrated legacy systems to AWS EC2, optimizing instance configurations to improve scalability and maintain a 99.9% system uptime
- Developed a geolocation verification module in Flutter using Google Maps API, achieving 99% location accuracy and eliminating fraudulent field check-ins
- Automated delivery scheduling by integrating Google Workspace APIs with the ERP system, triggering real-time Google Calendar updates upon invoice finalization
Software Engineer
Celindo Pratama • Batam, Indonesia
Aug 2014 - Dec 2019
- Modernized application architecture by leading the transition from ASP.NET Web Forms to ASP.NET MVC, improving maintainability and alignment with industry standards
- Designed and implemented manufacturing systems tailored to client business needs using C# WinForms and ASP.NET Web Forms
- Engaged directly with customers to translate complex business requirements into functional software specifications and system designs
Featured Projects
View All on GitHub →Education
Bachelor of Information Technology
University of Putera Batam
Batam, Indonesia
Currently Based in
Singapore
Singapore