Hi, I'm Alan Rubio. A Senior Software Engineer building scalable applications, thoughtful user experiences, and dependable APIs.
14+ years turning complex business needs into software that works — from legacy modernization to modern full-stack products.
I'm a software engineer who enjoys solving hard problems with simple, reliable solutions. My career has taken me through enterprise platforms, financial integrations, construction technology, and complex application modernizations.
I work comfortably across backend and frontend systems, and I care about maintainability, performance, and delivering value to the people using the product.
Download full résumé ↓Building and maintaining software across the stack.
APIs, full-stack delivery, integrations, and modernization.
Understanding the problem before writing the solution.
A few examples of the engineering challenges I've helped solve. Some details are intentionally high-level to respect client confidentiality.
Replacing manual data entry with an efficient workflow
Built an Excel import experience across a Ruby backend and React frontend to streamline large-volume records.
Contributed to a streamlined spreadsheet import workflow, connecting a React interface to Ruby-powered business logic.
OutcomeImported approximately 10,000 records in about 20 seconds, replacing a time-consuming manual process.
Moving a complex product from legacy AngularJS to Angular
Contributed to the incremental migration of profile and settings workflows from AngularJS to Angular 12+.
Worked on components, services, and workflows within a hybrid AngularJS/Angular application, collaborating with engineering and QA.
OutcomeHelped modernize key application functionality while preserving compatibility during the transition.
Reliable backend services for sensitive verification processes
Designed and implemented services for verification workflows integrating external credit and public-data checks.
Developed a REST API with authentication, documented endpoints, and automated tests for third-party integrations.
OutcomeEstablished a reusable and testable backend integration layer for multiple verification sources.
Orchestrating a software delivery workflow end to end
Created a .NET 8 API coordinating AI services, background jobs, file creation, and deployment workflows.
Designed layered services and a workflow state machine. Integrated third-party AI tools and local agents, with asynchronous processing through Hangfire.
OutcomeAutomated the flow from an initial proposal through generating project files and preparing application deployment.
Modernizing critical administrative workflows
Helped build a digital case management platform for civil, commercial, and family court workflows.
Contributed as a developer and technical lead on features supporting digital case management, coordinating application layers and integrations.
OutcomeSupported modernization of complex judicial processes in an enterprise-grade application.
Building digital signing experiences
Contributed to an electronic and digital signature solution with a modern web experience and supporting backend services.
Developed application functionality and integrations across Rails, Angular, and relational/document databases as part of the product team.
OutcomeHelped deliver workflows used to support electronic signing processes.
Technology is a means to an end. I choose tools that fit the problem, the team, and the product.
APIs, services & business logic
Thoughtful, maintainable interfaces
From database to deployment
Building software with collaborative teams, making legacy systems better, and bringing ideas into production.
Worked with international product teams on Rails modernization, construction software workflows, and AngularJS-to-Angular migration.
Ruby on Rails · React · Angular · TypeScriptDeveloped enterprise APIs, digital signature software, and judicial case management systems, including technical leadership on a court platform.
.NET Core · ASP.NET MVC · Ruby on Rails · SQL ServerBuilt ERP modules spanning electronic accounting, consolidation, purchasing, sales, inventory, and business reporting.
ASP.NET MVC · Knockout.js · SQL ServerDeveloped and supported emergency response applications and business ERP functionality, including releases and production support.
ASP.NET · Web API · ADO.NET · Knockout.jsDeveloped responsive portal updates and WCF services for Johnson Controls, a bus ticket sales application for Red Efectiva, and an Android field work-order tracking application for Grupo Pol.
ASP.NET MVC · Oracle · .NET · Xamarin · WCFMaintained AutoNet insurance workflows for policy quotations, issuance, endorsements, and printing.
C# · .NET Framework · SQL Server · JavaScript · jQueryCoordinated incident resolution, maintenance, change control, software implementations, technical support, and server availability. Served as project lead using CMMI practices.
C# · .NET Framework · SQL Server · Visual Basic 6 · TelerikI'm open to senior software engineering roles, remote collaborations, and selected freelance opportunities. Let's talk about what you're building.