Martin Doychev, Developer in Sofia, Bulgaria
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Martin Doychev

Verified Expert  in Engineering

Mobile Developer

Sofia, Bulgaria
Toptal Member Since
May 13, 2019

Martin has been developing software for over half a decade, mostly as a mobile developer. His most recent projects are mostly targeted towards React Native, with Android as his main background. He is also currently teaching informatics in a local school.



Preferred Environment

Windows, GitKraken, Atom, Android Studio

The most amazing...

...Game Jam app I've created was trained with a gesture-based app trained with a neural network using Android and a .NET back end.

Work Experience

Freelance Mobile Developer

2019 - PRESENT
  • Delivered multiple mobile projects from start to finish, usually as a solo mobile developer.
  • Planned and participated in the design process for projects, including software, UX and UI designs.
  • Oversaw all phases of mobile development, including delivery to the App Store and Play Store.
Technologies: iOS, Android, React Native

Senior Mobile Developer

2017 - 2019
Sircle Advertising, Inc.
  • Reviewed code and suggested improvements in coding standards.
  • Contributed to the community with various improvements on popular libraries.
  • Added logging for mobile applications in order to improve the stability and reliability of the apps over time.
  • Designed the UI and UX of mobile applications according to Apple's and Google's visual style guides.
Technologies: React Native, Android

Senior Android Developer

2018 - 2018
  • Developed security features.
Technologies: Android

Android Developer

2015 - 2017
Melon, Inc.
  • Developed mobile projects for various clients.
  • Owned version control, application design, and automated deployment.
  • Worked according to Scrum standards.
  • Reviewed code and improved coding practices.
Technologies: Android

Java Developer

2012 - 2015
Methodia, Inc.
  • Led the team and monitored for a junior colleague.
  • Developed for insurance systems.
  • Engaged with the software development lifecycle in real projects.
  • Applied best practices in software development.
Technologies: PostgreSQL, Java EE

SMD Studio
A collection of applications and games that I developed.

Ritulette (Development)
Took part in the 2016 Game Jam creating a gesture-based Android app trained with a neural network using Android with a .NET back end.

Global Game Jam Participations

All the games I participated in creating in the GGJ over the years.


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Jupiter Savings

An app for the South Africa market: Jupiter is a savings account app. The main features from the developer's perspective include animations, safe network communication, solid UX design, and good application flow architecture.
2017 - 2019

Master's Degree in Embedded Systems

Sofia University - Sofia, Bulgaria

2017 - 2018

Master's Degree in Embedded Systems

Polytechnic of Zagreb - Zagreb, Croatia

2015 - 2015

Bachelor's Degree in Computer Science

Università degli Studi dell'Aquila - L'Aquila, Italy

2011 - 2015

Bachelor's Degree in Computer Science

Sofia University - Sofia, Bulgaria


Git, Visual Studio App Center, Fastlane, Android Studio, Atom


React Native, Unity3D, Unity


Java, C#, JavaScript, GraphQL


Mobile, Android, Firebase, Windows, Java EE, iOS


Mobile Development, Agile, Scrum, Design Patterns, Adaptive


Firebase Realtime Database, PostgreSQL


Project Planning, Communication, Planning, User Experience (UX), Mobile UX, App UX, Technical Leadership, Photoshop CC 2019, Algorithms, OOP Designs, User Interface (UI), Mobile UI, GitKraken, Command Prompt (CMD)

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