Briefly, let me provide a little background information about myself. I'm a freelance developer who holds a M.S. in Software Engineering from Mercer University and have spent the last 15+ years developing software and working with a variety of technologies and programming languages. As a software engineer I have developed code for several operating systems (Windows, Linux/embedded Linux, Mac, iOS and Android) and I am comfortable writing desktop, mobile, or web code.     I have worked on a variety of different iOS/Android apps over the years and am quite versed in developing iOS/Androids apps with both swift and obj-c as well using both Java and Kotlin to create apps. Over the years I've worked on many apps ranging from large to small as well as both enterprise and apps released to iTunes/play store. As such, I’m up to date with the latest iOS/Android coding standards and already have the tools in place to do development and could hit the ground running.

Leronzo Tatum

Briefly, let me provide a little background information about myself. I'm a freelance developer who holds a M.S. in Software Engineering from Mercer University and have spent the last 15+ years developing software and working with a variety of technologies and programming languages. As a software engineer I have developed code for several operating systems (Windows, Linux/embedded Linux, Mac, iOS and Android) and I am comfortable writing desktop, mobile, or web code.     I have worked on a variety of different iOS/Android apps over the years and am quite versed in developing iOS/Androids apps with both swift and obj-c as well using both Java and Kotlin to create apps. Over the years I've worked on many apps ranging from large to small as well as both enterprise and apps released to iTunes/play store. As such, I’m up to date with the latest iOS/Android coding standards and already have the tools in place to do development and could hit the ground running.

Available to hire

Briefly, let me provide a little background information about myself. I’m a freelance developer who holds a M.S. in Software Engineering from Mercer University and have spent the last 15+ years developing software and working with a variety of technologies and programming languages. As a software engineer I have developed code for several operating systems (Windows, Linux/embedded Linux, Mac, iOS and Android) and I am comfortable writing desktop, mobile, or web code.
    I have worked on a variety of different iOS/Android apps over the years and am quite versed in developing iOS/Androids apps with both swift and obj-c as well using both Java and Kotlin to create apps. Over the years I’ve worked on many apps ranging from large to small as well as both enterprise and apps released to iTunes/play store. As such, I’m up to date with the latest iOS/Android coding standards and already have the tools in place to do development and could hit the ground running.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Work Experience

Freelance Software Developer at Freelance Contractor
December 1, 2011 - Present
Independent software developer delivering iOS/Android apps, backend services, and client projects across multiple industries.
iOS/Java Developer at Reemarkble Solutions
November 1, 2015 - Present
iOS app development; fix bugs/add enhancements to in-house Enterprise iPad app; fix bugs in Java/SQL backend code; set up Git; track bugs with unfuddle; manage licenses for the team.
Android Developer at 98Point6
October 1, 2024 - March 1, 2025
Create SSO SDK integration into Android app; update SDK tester to use SSO SDK.
iOS Developer at Design86
December 1, 2023 - August 1, 2024
Use ARKit to create 3D modeling app; incorporate various 3D files; QA/debug app.
Instructor at Ford/Npursuit
July 1, 2023 - October 1, 2023
Lead classes/teach Embedded C++/Kotlin; assist students with assignments; create curriculum.
Android Developer at Google - YouTube Music
October 1, 2022 - January 1, 2023
Work on YouTube Music app; add sliding Mini Player across songs; replace next button with custom sliding animation.
Python Developer at HostedHR
July 1, 2022 - September 1, 2022
Create custom scripts to pull HR data; use Merge API to pull data; maintain scripts and weekly data pulls.
iOS/Android Developer at Novo/Dexcom
March 1, 2021 - November 1, 2021
Dexcom g6 iOS/Android apps; fix bugs/enhance apps; add features; manage code reviews; daily scrum; Jira task tracking.
iOS/Android Developer at Community Teen Coalition, Inc
November 1, 2020 - January 1, 2021
Community Teen Coalition iOS/Android apps; create backend database using Firebase; set up/manage Google/Apple/Firebase accounts.
iOS/Android Developer at STEAMsport, Inc
February 1, 2020 - Present
Wellness Wise iOS/Android apps; set up/manage Google/Apple/Firebase accounts.
iOS/Firebase Developer at SiteCrafting, Inc
April 1, 2019 - December 1, 2019
Kios Healthy Mouth project: convert wireframes/UX to iOS code; fix bugs; integrate Firebase; RxSwift to update UI; integrate 3rd party libraries; participate in code reviews; collaborate with UI/UX.
iOS/Android Developer at Nucleus Medical Media
August 1, 2016 - August 1, 2018
iOS/Android development; bring older code up to current iOS standards; add new medical information animation screens; fix bugs; manage licenses; Embotrap Demo for Johnson & Johnson.
Web Developer at Hewlett-Packard
November 1, 2015 - Present
Fix problems from IE9 to IE11; use JQuery to add fade animations; clean up lobby panel web code.
Web/AWS/C# Developer at Hewlett-Packard
May 1, 2016 - October 1, 2017
Automate EC Panel Display; use JQuery for panel data animations; create REST-like API and connect to real-time data; desktop app for updating panel info; integrate with REST API; server-side/client-side fixes.
Web/AWS/C# Developer at Hewlett-Packard
July 1, 2018 - December 1, 2018
Update EBC/Lobby Panel front-end to use Salesforce API; update frontend UI for panels; real-time data updates.
iOS/Android/PHP Developer at Brooklyn Design
October 1, 2015 - October 1, 2015
TravelBook App: add login, account creation, auto-suggest fields; backend Yii PHP integration; data handling.
iOS/Android/PHP Developer at Brooklyn Design
December 1, 2015 - December 1, 2015
TravelBook App; add login and account creation; add group chat functionality; fix message draft/storage issues.
Excel VBA Developer at Eden Hospital
February 1, 2015 - Present
Create Excel form using VBA to store, sort, and retrieve patient data.
iOS/Android Developer at WeAreHathway
March 1, 2013 - February 1, 2014
Mind Body Express App; redesign/update POS screen; develop MindBody Express iOS/Android apps; convert wireframes to interfaces; participate in daily scrums.
iOS/Android Developer at WeAreHathway
June 1, 2014 - October 1, 2014
Mind Body Express App; ongoing feature updates; collaboration with UI/UX; bug fixes.
ASP.NET/C#/SQL Developer at Telcom Cost Control, Inc.
January 1, 2013 - March 1, 2013
Make enhancements to Wireless Essentials web app; create new databases/queries; document/test web app.
C#.NET Developer at Center for Disease Control
November 1, 2012 - January 1, 2013
Fix bugs/add functionality to Epi Info 7; update WPF GUI; SQL queries to interact with patient database; code clean-up.
JAVA Developer at Private Trader
October 1, 2012 - November 1, 2012
Update/Debug JAVA Forex auto-trade web program; update Selenium WebDriver API; localize website data; add PIP-based trading functionality.
C++ Developer at Brainlike Inc.
May 1, 2012 - September 1, 2012
Convert auto-adaptive neural learning algorithms to C/C++; enhance Windows MFC GUI; debugging.
C++/Qt Developer at ATR Technologies
December 1, 2011 - April 1, 2012
Upgrade Keyboard Teacher typing tutor from QT C++ v2.4 to QT 4.7; debugging and enhancements.
C/C++/Mobile Developer at Brainlike Inc.
March 1, 2007 - October 1, 2011
Convert auto-adaptive neural algorithms to mobile code; multi-platform development for Windows/Linux/OS X/iOS/Android; GPU/CUDA; MFC/Qt.

Education

M.S. Software Engineering at Mercer University
August 1, 2004 - May 1, 2006
B.S. Computer Science at Morris Brown College
August 1, 1999 - May 1, 2003

Qualifications

Java Software Development Certification
May 1, 2005 - February 3, 2026
Advanced Object Orientated Design Certification
May 1, 2006 - February 3, 2026

Industry Experience

Software & Internet