Plamen Terziev, iOS Developer in Sofia, Bulgaria
Plamen Terziev

iOS Developer in Sofia, Bulgaria

Member since August 20, 2014
Plamen is a software engineer and developer who specializes in front-end and back-end solutions. He has experience with iOS mobile native applications, C/C++ applications, and 2D/3D graphics and games. He is eager to learn and loves to work on challenging projects.
Plamen is now available for hire




Sofia, Bulgaria



Preferred Environment

Subversion (SVN), Git, Visual Studio, Xcode

The most amazing...

...thing I've built is a 3D desktop application demonstrating different algorithms for surface subdivision.


  • CEO, Co-founder, and iOS Developer

    2016 - PRESENT
    Bitsfleet, Ltd.
    • Implemented WasHere app - Share and discover the secret marks around you.
    • Supported previous iOS projects in Swift and Objective-C.
    Technologies: Realm, Unity3D, OpenGL, Cocoa, iOS, Objective-C, Swift
  • Senior iOS Developer

    2014 - 2016
    Droxic, Ltd.
    • Implemented CalConvert Free: Metric, Currency and Unit Converter app.
    • Implemented Timer Free: Multiple Countdown + Reminder app.
    • Supported - Broadway Tickets, Videos, and News app.
    • Implemented a 2D game built using Unity.
    Technologies: Unity3D, Cocoa Touch, Objective-C, Swift
  • iOS Developer

    2015 - 2015
    Tombooks (via Toptal)
    • Ported an existing iPad app to Mac using OpenGL, Cocoa Touch, and web views.
    • Created scalable widgets to play with.
    Technologies: OpenGL, Cocoa, Objective-C
  • Senior iOS Developer

    2011 - 2014
    • Created a social iOS native application for managing and sharing recommendations with friends.
    • Supported and extended the iPhone and iPad versions of news reading applications.
    • Updated the iPad news reading application to support Retina display.
    • Integrated the iOS application with Newsstand.
    • Created an iOS video player component with ad support.
    Technologies: Core Data, RestKit, Core Animation, UIKit, iOS
  • Senior iOS Game Developer

    2011 - 2011
    Nexgen Development Group
    • Created 2D iPhone game for managing Pet Park.
    • Implemented game state persistence and server communication.
    Technologies: PlayHaven, Tapjoy, SQLite, UIKit, Cocos2d, C++, iOS
  • C++ Game Developer

    2010 - 2011
    Masthead Studios
    • Participated in development of a 3D MMORPG game in C++.
    • Worked on 3D game client and game engine using C++ and DirectX and game servers using C++.
    • Implemented asynchronous DirectX shaders compilation.
    • Profiled and optimized different aspects of the game client.
    • Implemented fast offline terrain light map generator.
    • Researched physics simulation synchronization over the network.
    Technologies: SQLite, PhysX, DirectX, Boost, C++
  • C++ Developer

    2010 - 2010
    Scopic Software
    • Participated in CAD desktop application for woodworkers using C++ and OGRE.
    • Worked on the core geometry engine used in the application.
    Technologies: Qt, OGRE, OpenGL, C++
  • C++ Developer

    2007 - 2009
    Scopic Software
    • Participated in a 3D application that is used by the dentists to mark margins on the teeth.
    • Supported and enhanced testing tool that determined if a child can swallow a toy. It included physic and collision simulations that used the Bullet Physics library.
    • Implemented drawing application prototype using a diffusion curves algorithm.
    Technologies: Bullet, OpenGL, C++
  • Java ME Developer

    2007 - 2007
    • Supported mobile games on new devices.
    • Integrated an ads platform in mobile games.
    Technologies: Java ME
  • C/C++ Developer

    2006 - 2007
    Opencode Systems
    • Participated in the core library used by all projects.
    • Created convenient C++ interfaces for some of the Linux C primitives.
    • Implemented unit tests for paths of existing classes.
    Technologies: Linux, Boost, C++, C


  • WasHere - Share and Discover the Secret Marks Around You

    Was Here is anonymous local sharing in a radius of 500 meters around you:
    • See what neighbors and people around you are up to
    • Share photos and videos or just text
    • Put your graffiti art into the cloud
    • Play scavenger hunt games
    • Discover exciting new things
    • Become a modern Kilroy

  • LoveThis

    LoveThis is an iOS native application for managing and sharing recommendations with friends. I've implemented almost the entire application with the following technologies: iOS, UIKit, Foundation, Core Data, Core Animation, and RestKit.

  • The Times of London for iPhone

    This is a news reading native application for iPhone, in which I implemented news downloading and offline mode support. I participated in all new features requested from the client.

  • Pet Park

    Pet Park is an iPhone 2D game for managing a park of pets using Cocos2D. I implemented many parts of the game engine, game play logic, and server communication.

  • Earthrise

    Earthrise is a 3D MMORPG game written in C++. I participated in various features for the client. I worked on the game servers and some of the tools such as the Model Editor and the World Editor.

  • SketchList 3D

    SketchList 3D is a 3D cabinet design software for both hobby and professional users. I participated in improving the core geometry engine and implementing different client features.

  • 3M™ Margin Marking Software

    This application was designed for ditching, die cutting, and model trimming of teeth and was integrated as part of the 3M™ True Definition Scanner. I implemented an algorithm for smoothing a 3D mesh while keeping the feature edges and an algorithm for finding feature edges on a 3D mesh.

  • Vouch

    Vouch runs a series of simulations using the top Toy Industry Standard Tests and toy 3D model to verify that toy is safe for use. I implemented various tests and participated in Bullet Physics integration.


  • Languages

    Swift, Objective-C, C, C++, HLSL, GLSL
  • Other

    Web Development, Game Development
  • Frameworks

    ZURB Foundation, Boost, Qt, Cocos2d, RestKit, UIKit, Core Data, PhysX, OGRE, Bullet, Cocoa, Cocoa Touch, Unity3D
  • Libraries/APIs

    OpenGL, Standard Template Library (STL), Core Animation, PlayHaven, DirectX
  • Tools

    Subversion (SVN), Git, Microsoft Visual Studio, Xcode, Visual Studio
  • Paradigms

    Agile Software Development, Object-oriented Design (OOD), Class-based OOP, Scrum, Design Patterns
  • Platforms

    MacOS, iOS, Windows, Linux, Tapjoy, Java ME
  • Storage

    Realm, SQLite


  • Master's Degree in Computer Graphics
    2009 - 2011
    Sofia University "St. Kliment Ohridski" - Sofia, Bulgaria
  • Bachelor's Degree in Computer Science
    2005 - 2009
    Sofia University "St. Kliment Ohridski" - Sofia, Bulgaria

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