John Rizal Javier

Senior Software Engineer / Full Stack .NET Developer

Delivered production SaaS, marketplace, payroll and line-of-business applications for clients across ASP.NET Core, Angular, React, Flutter, SQL Server, MySQL and Azure. Designed and built a hot-loadable plugin architecture for an enterprise payroll platform and a .NET 8 marketplace API with Firebase push notifications and Twilio OTP.

C#ASP.NET CoreAngularReactFlutterSQL ServerMySQLAzureEntity Framework CoreJWTHangfireSwaggerFirebaseTwilioSendgridGoogle PlayStripeDapperHtmlAgilityPackEntra IDGitHub ActionsAstroTypeScriptWinForms

Co-Founder & Lead Software Engineer

Co-founded and led engineering for a multi-tenant Microsoft 365 monitoring and automation SaaS, owning architecture, infrastructure, CI/CD, releases and production support. Built the Angular 16 SPA and .NET 8 Azure Functions backend with Durable Functions orchestrations and Stripe billing.

Angular.NET 8+Azure FunctionsDurable FunctionsMicrosoft GraphSharePointAzure Cosmos DBSQL ServerPostgreSQLEF CoreKey VaultsSendgridPollyStripePdfSharpEntra IDAzure Pipelines

Software Engineering Team Lead

Accenture

Led enterprise application delivery and production support for a certification and audit-management platform, coordinating offshore and onshore stakeholders. Resolved a long-standing system timeout by designing and implementing a microservice-based processing engine in .NET.

.NETMicroservicesHangfireDbUpSimple InjectorAutoMapperOpenXMLSalesforcePower BIAzure Event HubEntity FrameworkMentorship

Full Stack .NET Developer

Built core modules of a multi-tenant platform for Microsoft Cloud partners, including policy templates, compliance monitoring, and tenant onboarding. Modeled the MongoDB data layer and built Azure Key Vault, App Configuration, and Blob/Queue/Table Storage wrappers.

C#ASP.NET MVCTypeScriptMongoDBAzure Key VaultAzure App ConfigurationAzure Blob StorageAzure Queue StorageAzure TableAzure Web JobsAzure FunctionsAzure PipelinesSonarCloudWHMCSDocker

Full Stack .NET Developer

Built the test-floor management platform for a semiconductor customer's test operation, including ASP.NET MVC 5 and Web API portal with Excel import/export. Developed about 20 unattended Windows services for lot tracking, wafer-map download, and test-program auto-release.

ASP.NET MVCWeb APIs.NET 4.5Entity FrameworkjQueryBootstrapEPPlusExcelDataReaderWindows ServicesSQL ServerASP.NET CoreSwagger

Full Stack .NET Developer

Nexperia

Built a SECS/GEM equipment-to-host interface in C# and WinForms for starting/stopping equipment processing and collecting measurement data. Developed a recipe management system and a machine performance dashboard with ASP.NET Web Forms and Oracle.

C#WinFormsSECS GEM ProtocolsASP.NET Web FormsOracleMultithreading

Software Engineer

Samsung Electronics

Built a test-program loader in VB6 that deploys test programs from a central server to production test machines. Developed a networked backup and recovery tool in C# and WinForms with SQL Server for distributed file copying and restoration.

VB6C#WinFormsSQL Server