Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I'm Jason R. Lumapas, a Senior Mobile Software Engineer specializing in iOS (Swift, Objective-C) and Flutter. I have a track record of optimizing performance, modernizing legacy code, and shipping production-grade apps at scale across consumer-facing products. I also bring full-stack experience with ASP.NET Core, C#, REST APIs, and Azure, and I enjoy collaborating with cross-functional teams in Agile environments to translate requirements into robust features while improving stability and automation.…Hi, I'm Jason R. Lumapas, a Senior Mobile Software Engineer specializing in iOS (Swift, Objective-C) and Flutter. I have a track record of optimizing performance, modernizing legacy code, and shipping production-grade apps at scale across consumer-facing products. I also bring full-stack experience with ASP.NET Core, C#, REST APIs, and Azure, and I enjoy collaborating with cross-functional teams in Agile environments to translate requirements into robust features while improving stability and automation.

Jason R. Lumapas

Full Stack Developer, Web Developer, App Developer, +2





Hi, I'm Jason R. Lumapas, a Senior Mobile Software Engineer specializing in iOS (Swift, Objective-C) and Flutter. I have a track record of optimizing performance, modernizing legacy code, and shipping production-grade apps at scale across consumer-facing products. I also bring full-stack experience with ASP.NET Core, C#, REST APIs, and Azure, and I enjoy collaborating with cross-functional teams in Agile environments to translate requirements into robust features while improving stability and automation.…Hi, I'm Jason R. Lumapas, a Senior Mobile Software Engineer specializing in iOS (Swift, Objective-C) and Flutter. I have a track record of optimizing performance, modernizing legacy code, and shipping production-grade apps at scale across consumer-facing products. I also bring full-stack experience with ASP.NET Core, C#, REST APIs, and Azure, and I enjoy collaborating with cross-functional teams in Agile environments to translate requirements into robust features while improving stability and automation.

Available to hire

Hi, I’m Jason R. Lumapas, a Senior Mobile Software Engineer specializing in iOS (Swift, Objective-C) and Flutter. I have a track record of optimizing performance, modernizing legacy code, and shipping production-grade apps at scale across consumer-facing products.

I also bring full-stack experience with ASP.NET Core, C#, REST APIs, and Azure, and I enjoy collaborating with cross-functional teams in Agile environments to translate requirements into robust features while improving stability and automation.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Work Experience

Senior iOS Software Developer at Foodics

July 1, 2022 - April 1, 2026

Optimized performance of white-label iOS applications in Swift, improving responsiveness, animation smoothness, and overall user experience across consumer-facing products. Diagnosed and resolved critical production bugs, directly improving app stability and reducing support escalations. Built an automation tool to streamline Swift Package Manager (SPM) integration across multiple Xcode targets, significantly reducing build configuration overhead. Contributed to migration of legacy iOS apps to Flutter, advancing cross-platform modernization and reducing platform-specific maintenance burden.

Senior iOS Software Developer at SOLO Technology Services LLC

March 1, 2020 - July 1, 2022

Developed and maintained enterprise mobile applications in Swift, following SOLID principles and clean architecture patterns. Collaborated with stakeholders to define requirements and translate them into performant, maintainable iOS features. Authored automated test scripts that improved QA efficiency and reduced regression defects in production releases. Investigated and resolved production bugs, maintaining high stability benchmarks for client-facing applications.

Full Stack Web Developer at Mundomo.com Inc.

November 1, 2018 - March 1, 2020

Designed scalable database schemas for e-learning platforms and developed RESTful APIs using ASP.NET Core and Entity Framework Core. Built responsive frontend interfaces with ASP.NET MVC, Bootstrap, and jQuery, integrating AJAX-based async data loading for improved UX. Managed Azure infrastructure including virtual machines and SQL databases.

iOS Software Developer at Idearobin

June 1, 2018 - October 1, 2018

Maintained and enhanced Objective-C iOS applications for language learning, improving API reliability and reducing request failure rates. Implemented device identification for analytics and developed automated tests to ensure data integrity.

iOS Software Developer at Nano Equipment Pte Ltd

March 1, 2012 - May 1, 2018

Led development of multiple iOS apps — including enterprise and App Store titles — using Swift and Objective-C. Built mapping and real-time location tracking features using Core Location and MapKit frameworks. Integrated backend APIs for data retrieval and submission; published apps supporting large-scale user deployments.

Senior Software Engineer /Team Lead at Accenture Inc.

February 1, 2011 - March 1, 2012

Led PeopleSoft application development, testing, and QA initiatives; designed and implemented data consolidation systems.

Senior Software Developer at Gemango Software Services Inc.

August 1, 2009 - December 1, 2010

Developed C++ DLL wrappers for hardware-software communication and created process monitoring tools in C#. Built 3D games using the 3DGS engine and prototyped an AI-driven racing game in Unity3D.

iOS Software Developer at IT Consultant /Freelance

July 1, 2008 - August 1, 2009

Developed business process automation systems for real estate clients and built web-based data collection platforms.

Software Engineer at Oerlikon Assembly Equipment Pte. Ltd.

January 1, 2008 - July 1, 2008

Implemented new C++ software architecture for industrial machines and integrated legacy modules into updated system design.

Senior Software Engineer at NCR Cebu Development Center Inc.

February 1, 2004 - December 1, 2007

Developed ASP.NET systems for machine performance monitoring; designed database schemas and created SQL Server–based reporting tools.

Senior Software Engineer at Bigfoot Global Solutions Inc.

January 1, 2002 - December 1, 2003

Enhanced web-based mailing systems on IIS and developed C++ backend components for email processing; administered IMAP servers.

Senior Software Engineer at NEC Telecom Software Philippines, Inc.

April 1, 1996 - January 1, 2002

Designed and developed telecom network software in C++ and Java; participated in architecture design, code reviews, and system integration testing. Contributed to major system redesign and modernization efforts over a 6-year tenure.