Open to opportunities

gamer daniel

@gamerdaniel

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Senior iOS and Flutter developer specializing in bug-fixing and maintenance.

South Korea

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What I'm looking for

I seek remote contract roles focused on bug-fixing, maintenance, technical debt reduction, app stability, and performance improvements within collaborative teams.

I am a detail-oriented senior iOS and Flutter developer with over 10 years of experience focused on diagnosing, troubleshooting, and resolving complex issues in existing codebases. I specialize in improving application stability, optimizing performance, reducing technical debt, and maintaining legacy systems for production apps across industries like sports platforms, fintech, and smart fitness.

I communicate clearly through code, comprehensive comments, and project management tools, and I excel at leading debugging efforts, refactoring for maintainability, and ensuring smooth version updates and routine maintenance. I am currently based in South Korea, available for remote contracts, and committed to delivering high-quality, reliable solutions for stability- and maintenance-focused projects.

Experience

Work history, roles, and key accomplishments

Current

Senior iOS & Flutter Developer

Current

Maxwealth Infinity

Mar 2024 - Present (1 year 10 months)

Maintain and iterate on a complex sports event Flutter application, improving stability and performance by diagnosing and resolving bugs reported by QA and users and refactoring code to improve maintainability.

Flutter Dart IOS SDK Debugging Performance Tuning Crash Analysis Git Firebase

iOS Technical Expert / Team Lead

Maxwealth Infinity

May 2022 - Dec 2023 (1 year 7 months)

Provided senior technical oversight for a sports platform, improving reliability by resolving critical bugs, managing version updates, and performing routine maintenance to ensure smooth user experience.

Swift Objective C IOS SDK Crash Analysis Memory Leak Fixes Code Review CI CD

iOS Technical Expert / Tech Lead

DreamCapital

Apr 2019 - May 2022 (3 years 1 month)

Independently maintained and enhanced a large-scale sports platform, troubleshooting livestreaming and real-time messaging features and ensuring continuous operation through targeted bug fixes.

Swift Objective C Debugging Livestreaming Troubleshooting Performance Optimization

Project Director

Hangzhou Gangyu Technology

Aug 2016 - Mar 2019 (2 years 7 months)

Oversaw technical development of a smart fitness platform, acted as primary troubleshooter for app-to-hardware integration, and resolved complex issues related to app distribution, signing, and compliance.

IOS SDK Code Signing & Compliance Troubleshooting Swift Objective C

Senior iOS Developer

Sunyard System Engineering

May 2015 - Aug 2016 (1 year 3 months)

Maintained and enhanced a mobile credit imaging system for iPhone/iPad, identifying and fixing dozens of complex bugs related to image processing, data synchronization, and permissions.

Objective C Swift Image Processing Permissions Troubleshooting Git

iOS Developer

Hangzhou Lemang Technology

Apr 2013 - Apr 2015 (2 years)

Contributed to core development and maintenance of multiple iOS apps, developed and debugged an audio processing module resolving multi-channel playback, reverb, and equalizer issues.

Objective C Swift Audio Processing Multi Channel Playback Debugging Cocoapods