Martin Kunev, Developer in Paris, France
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Martin Kunev

Verified Expert  in Engineering

Algorithms Developer

Paris, France
Toptal Member Since
December 19, 2016

Martin is always ready to learn new things. He considers himself a back-end developer, but he also has experience with the front-end. He loves getting into the details of how things work under the hood. Martin is also a co-founder of a web-hosting company called WebConnect.


Media Digital
Java, C++, C, Android NDK
Docker, ExtremeDB, MySQL, UDP, Python, C, C++
NumPy, OpenCV, C++, Python




Preferred Environment

Shell, Git, Vim Text Editor, Unix, Linux

The most amazing...

...project I've worked on is developing the back-end of a scalable, distributed, web-based platform for accessing, transferring, and sharing data.

Work Experience


2018 - 2018
Media Digital
  • Adapted a cryptocurrency-mining application to work as a library.
  • Designed and implemented a native library interface for Android.
  • Implemented an Android application that interfaces a native library.
  • Created patches and build scripts to automate building tasks on multiple platforms.
Technologies: Java, C++, C, Android NDK


2017 - 2017
  • Implemented a service for processing financial data feeds from NYSE and NASDAQ as part of a service-based application.
  • Optimized memory management with shared memory and pools.
  • Integrated the embeddable database eXtremeDB in different operation modes.
  • Designed a deployment system with Docker.
  • Implemented a dynamic configuration that is updated using Cronos.
  • Wrote Python scripts for OATS report generation and administration.
Technologies: Docker, ExtremeDB, MySQL, UDP, Python, C, C++

Senior Software Developer

2016 - 2017
  • Developed a functionality that detected the foreground in an image, based on information about the location of the object in the image.
  • Worked on a project involving segmenting an image of a human silhouette into body parts and using the segmented silhouette to detect body features.
Technologies: NumPy, OpenCV, C++, Python

Co-founder | Full-stack Developer | Director

2009 - 2017
  • Developed an AJAX web-based panel for Xen virtualization and software that manages virtual servers.
  • Created a server that collects and processes virtual server load statistics, stores them in a database and exports SVG graphics.
  • Built a VNC proxy server, operating with WebSockets over HTTP and HTTPS.
  • Integrated payment systems. Developed control panels and other components of the site:
  • Administered to production servers with Apache, Lighttpd, PHP, MySQL, and Django; migrated clients.
  • Determined the virtual machine and hosting plans.
  • Initiated online advertisement campaigns and provided client support.
Technologies: Cairo, Xen, MySQL, WebSockets, PHP, JavaScript, C

Senior Back-end Developer

2014 - 2016
  • Improved the NetFlow reporting performance by an order of magnitude and reducing NetFlow storage space requirements several times.
  • Developed a scalable distributed threshold-based alerting system for NetFlow.
  • Used profiling tools to detect bottlenecks, improve speed, and minimize memory usage.
  • Wrote unit and integration tests.
Technologies: Lightning Memory-Mapped Database (LMDB), Google Mock (GMock), MySQL, Protobuf, Boost, C++, C

Back-end Developer

2014 - 2014
  • Developed the back-end of an accounting web application using NoSQL database and the REST interface.
  • Implemented an automatic generator of financial statements.
Technologies: Mustache, Redis, MongoDB, Node.js, JavaScript

Back-end Developer

2012 - 2014
  • Designed and implemented a scalable distributed system which provides unified access to data stored on different types of devices and cloud services.
  • Ensured the privacy of users by developing a multi-threaded HTTP server from scratch for multiple platforms (Linux, Mac OS X, Android, routers, and more). Dealt with portability concerns while porting the server.
  • Provided high-speed secure connections by developing a transparent, event-based, and concurrent HTTP proxy server.
  • Constructed an event-based, concurrent server that: provides information about connectivity to clients and manages other servers; provides automated version upgrades to end-user servers; delivers events to subscribers via HTTP.
  • Deployed and administered with automated tools written in Python, Perl, and Bash.
  • Created installation packages in Apple Disk Image, Tar, Debian, RPM and APK formats.
Technologies: SHA-2, JSON, POSIX, Memcached, SQLite, MySQL, AES, Transport Layer Security (TLS), HTTP, Python, C

Full-stack Web Developer

2009 - 2013
Freelance Work
  • Designed and developed websites.
  • Optimized sites for search engines.
Technologies: JavaScript, PHP

Teaching Assistant

2011 - 2012
Sofia University
  • Taught two courses called "Introduction to Programming" and "Functional Programming."
Technologies: Scheme, C++

Full-stack Web Developer

2008 - 2009
  • Developed websites for clients.
Technologies: MySQL, JavaScript, PHP


Co-founded and built a website providing web hosting services, domain registration, and virtual machines.


Built a web application, providing a uniform interface for accessing user devices: computers, phones, routers, FTP servers, and cloud services.

Jogging Web Application

Developed an AJAX-based application with REST, and implemented multiple user roles with different permissions.

Technologies used: Python, JavaScript, Flask, AngularJS, cURL, PostgreSQL.
2008 - 2012

Bachelor's Degree in Computer Science

Sofia University - Sofia, Bulgaria


Mustache, AES, POSIX, OpenCV, NumPy, Protobuf, Node.js


Git, GNU Debugger (GDB), Vim Text Editor, Shell, SHA-2, Android NDK, Subversion (SVN), Valgrind


C, Python, C++, JavaScript, Perl, Scheme, PHP, Java


Debian Linux, Linux, Unix, Xen, FreeBSD, Linux RHEL/CentOS, Docker


REST, Test-driven Development (TDD), Agile Software Development


MySQL, PostgreSQL, Redis, Memcached, JSON, MongoDB, SQLite, ExtremeDB


Boost, Google Mock (GMock), Flask, AngularJS,

Industry Expertise



Algorithms, Data Structures, Ajax, Networks, System Programming, Gentoo, GNU, Unix Shell Scripting, HTTP, Lightning Memory-Mapped Database (LMDB), Transport Layer Security (TLS), Cairo, UDP, Porting, Open Source, WebSockets

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