Open to opportunities

Jonathan Gonzalez

@jonathangonzalez3

Senior iOS Engineer with 15+ years of iOS experience, specializing in Swift, UIKit, SwiftUI, Objective-C, architecture, and production apps.

Philippines

Message

What I'm looking for

I'm looking to build and modernize reliable mobile products, especially iOS applications with complex integrations, offline capabilities, and high production-quality standards. I value hands-on engineering, collaborative distributed teams, mentoring, and meaningful technical ownership.

I've built and modernized production mobile applications for ING Philippines, TrackIt Limited, CloudSherpas, and Buckham & Duffy Consultants. My work spans digital banking, logistics and fleet tracking, enterprise SaaS, BLE hardware integrations, and consumer products.

At ING Philippines, I delivered lending, biometric authentication, security, and customer-facing banking features for a digital banking application used by millions. At TrackIt, I architected offline-first persistence and caching, resolved concurrency-related database crashes, and maintained location, mapping, navigation, BLE, messaging, and field-workflow features.

I bring 15+ years of native iOS development experience in Swift, SwiftUI, UIKit, and Objective-C, along with hands-on Android and backend experience. I enjoy modernizing legacy code, improving production stability, mentoring developers, conducting code reviews, and shipping reliable releases with distributed teams.

Experience

Work history, roles, and key accomplishments

Senior iOS Engineer

TrackIt Limited

May 2023 - Nov 2025 (2 years 6 months)

Led development and maintenance of native iOS (Swift/Objective-C) and Android (Java) apps for logistics and equipment tracking. Resolved production, concurrency and database issues; built offline-first, GPS/mapping and BLE features; modernized legacy code; coordinated with product/QA; managed App Store/Play Store releases; and mentored developers.

Senior Engineer - Mobile

ING Philippines

Oct 2018 - May 2023 (4 years 7 months)

Senior iOS Developer for ING Philippines’ digital banking app using Swift and Objective-C. Delivered secure banking and lending features, Face ID authentication, REST integrations, and Cordova OTA updates. Contributed to architecture, testing, CI/CD and production support while collaborating with global product, QA, backend and DevOps teams.

Senior iOS Developer

Buckham and Duffy Consultants

Oct 2014 - Oct 2018 (4 years)

Developed and maintained native iOS apps using Swift and Objective-C across multiple client projects. Worked from requirements and prototyping through implementation and production support. Integrated REST APIs, built offline data capabilities, resolved performance and stability issues, developed supporting PHP services, and collaborated directly with clients and teams.

Senior iOS Developer

CloudSherpas

Jan 2012 - Sep 2014 (2 years 8 months)

Led iOS projects for onshore and offshore clients, covering requirements gathering, estimation, architecture, delivery, and client consulting. Coordinated developers, QA, and business analysts; delegated and monitored project work; mentored and interviewed developers; established mobile code-quality standards; and designed solutions for enterprise mobility requirements.

Symbian \ iOS Developer

Excitor

Feb 2011 - Dec 2011 (10 months)

Developed, maintained, and supported Excitor’s secure DME enterprise mobile application across iOS and Symbian. Implemented new features, resolved defects, and improved the existing codebase while helping ensure reliable, consistent functionality across platforms for a security-focused mobile and remote access solution.

C++ Developer

Microsourcing

Mar 2009 - Jan 2011 (1 year 10 months)

Developed and maintained desktop utilities using C/C++ for NCH Software. Enhanced existing production applications, resolved defects, and improved functionality while maintaining stability and compatibility. Key projects included Doxillion Document Converter and Lightning PDF, delivering production-ready improvements within established codebases.

Software Architect Team Lead

Colibria

Oct 2005 - Nov 2008 (3 years 1 month)

Pioneered Colibria’s Symbian development and led the architecture and delivery of its Nokia S60 instant messaging client through v3.5. Managed cross-functional development and QA, provided technical leadership and code reviews, trained engineers in Symbian C++, and established mobile development practices for carrier-grade messaging solutions.

Symbian Developer

Boogs

Feb 2004 - Oct 2005 (1 year 8 months)

Developed commercial Nokia S60 applications using Symbian C++, owning the full lifecycle from design and implementation to testing, deployment, and maintenance. Key products included Bulldog, a mobile security app; Fetch, a backup and recovery utility; and a multiplayer Pusoy Dos card game for early Symbian smartphones.