Ahmed Al-Amir - Freelance C++ Developer for Hire

Senior Software Engineer

Outware Mobile

2016 - PRESENT

Provided technical analysis for business requirements.
Wrote and reviewed code that closely maintains banking regulations and security practices.
Provided assistance for solving difficult/illusive bugs.
Organized and presented technical talks.
Mentored developers and provided technical guidance.

Technologies: Android, Java, Git

Freelance Android Developer

Kasra.co (via Toptal)

2015 - 2016

Designed and implemented the app from the ground up, making sure to make ends meet between the existing back-end and the desired UI.
Worked closely with the UX team to meet design specifications and ensure comparability with a wide range of Android device sizes.
Added background loading and caching to enable users to consume content offline.
Implemented syncing for user settings (favorites, bookmarks, etc.) between different user devices.
Integrated the app with several social media services, e.g., branch.io for deep linking and Facebook/Twitter for logging in and content sharing.

Technologies: Android, REST, Deep Linking

Freelance Android Developer

Fatsack Outdoors (via Toptal)

2015 - 2015

Ported an iOS app to Android.
Created Android UI from provided Photoshop templates.
Employed a mix of local and in-the-cloud strategy for data storage and caching.

Technologies: Android, Parse SDK, JSON

Freelance Android Developer

Rolltech, Inc. (via Toptal)

2014 - 2015

Developed the Android version of a Rolltech bowling score tracking app.
Converted iOS app screens to Android ones.
Implemented the app to consume a real-time API and maintained a responsive user-friendly UI.

Technologies: Android, Retrofit, JSON

Freelance Developer

Terminal.com (via Toptal)

2014 - 2014

Created reusable Linux-based snapshots. Each snapshot contained popular open source software installed, configured, and ready to use.

Technologies: Linux

Development Lead

Inmobly

2014 - 2014

Led a team of six developers, making design decisions and enforcing code quality practices.
Used adaptive algorithms in the software to predict user future content consumption based on previous behavior.
Achieved goals of lowering network congestion and decreasing internet bills.

Technologies: Android, Python

System Designer

CGI

2012 - 2013

Redesigned SQL queries, significantly cutting execution time from 5 hours to 15 minutes.
Redesigned C-based administration software for power plants into a server/client architecture.
Ensured full backward compatibility for the new design.

Technologies: JavaScript, C#, SQL

Team Leader

CartoLogic

2012 - 2012

Created a unified user management system encapsulating services running on different platforms.
Developed a paging system allowing users to consume large amounts of data from GIS services not offering paging.

Technologies: ASP.NET, Python

Senior Developer

CIT MobiDiv

2011 - 2011

Wrote a lossless algorithm to compress images in as few SMS packets as possible.
Integrated the application with the messaging system on various mobile platforms.
Used Facebook/Twitter API to publish images from the application.

Technologies: Windows Mobile, Android, J2ME

Developer

Harf IT

2007 - 2011

Designed and implemented algorithms for indexing both plain text and XML, with the ability to execute XPath queries on indexed data.
Kept search and retrieval performance under 300ms for 16GB of data on a single mainstream PC, with index storage overhead of 15%.
Wrote COM wrappers to provide search functionality to other platforms.
Wrote a plugin to provide advanced Arabic support for SQL Server full text search.

Technologies: C++, Win32 API

Artiweet (Development)

http://www.artiweet.com/

Artiweet is a social app enabling Twitter lovers to tweet to their hearts' content with no limit. It is suitable for those with many followers and even more to say.

Yalahwy (Development)

Yalahwy is an Android app for personal safety and kidnap prevention.

Meant as a community service for a community in need, it keeps an eye on those making dangerous trips; it alerts their friends via social networks when they are in danger, along with a map showing their latest whereabouts.

Rolltech Bowling - Android (Development)

https://www.rolltechbowling.com/

Rolltech is a bowling score tracker.

Users can automatically track scores and statistics in real-time, share bowling experiences with friends, and compete globally without ever leaving their favorite bowling center.

Fatsack Outdoors - Android (Development)

http://fatsackoutdoors.com/

Fatsack is an app for enthusiastic fishers. It keeps track of the items they have in their tackle boxes, the fish they catch as well as weather and location information for their catches.

Kasra: News & More (Development)

https://play.google.com/store/apps/details?id=com.kasra.reader

Kasra delivers buzzing social articles about celebrities, lifehacks, recipes, and quizzes to the Arab youth.

Kasra enables readers to follow their favorite writers, bookmark the articles they like, share them over social networks and sync all of that across all their devices.

Android Customization: How to Build a UI Component That Does What You Want (Publication)

https://www.toptal.com/android/android-customization-how-to-build-a-ui-component-that-does-what-you-want

It is not uncommon for developers to find themselves in need of a UI component that is either not provided by the platform they are targeting or is, indeed, provided, but lacks a certain property or behavior. The answer to both scenarios is a custom UI component. The Android UI model is inherently customizable, offering the means to create custom UI components in various ways.

Needle in a Haystack: A Nifty Large-Scale Text Search Algorithm Tutorial (Publication)

https://www.toptal.com/algorithms/needle-in-a-haystack-a-nifty-large-scale-text-search-algorithm

When coming across the term "text search", one usually thinks of a large body of text, which is indexed in a way that makes it possible to quickly look up one or more search terms when they are entered by a user. This is a classic problem in computer science, to which many solutions exist. But how about a reverse scenario? What if what's available for indexing beforehand is a group of search phrases, and only at runtime is a large body of text presented for searching?

Languages

C++, C, Java, Python

Frameworks

Android SDK, Dagger 2, Mockito, Espresso Testing Framework, Django

Libraries/APIs

Google Maps, Butterknife, Google Gson, Retrofit 2, GSON

Tools

Visual Studio, SourceTree, Android Studio

Paradigms

Object-oriented Programming (OOP), Test-driven Development (TDD), Agile Software Development

Platforms

Windows, Mac OS, Android, Linux

Storage

SQLite, MySQL

Other

GitFlow, OkHttp

Bachelor's degree in Computer Engineering

Cairo University - Egypt

2001 - 2006