Sergei Litvin

PROJECT 1. * Developed software to control gamma/neutron detectors, multichannel analyzer, GPS receivers, expose device metrics, store them in databases. * Developed device simulators using USBIP. * Wrote Wireshark dissector for command protocol. * Sent patches with fixes to OpenTelemetry team. PROJECT 2. * Wrote C and C# client and server libraries implementing VdS 2465/SecurIP (Transmission protocol for alarm signals/messages). * Сollaborated directly with the authors of the VdS 2465 standard.

PROJECT: IP PBX ROLE * Analyze existing codebase using pseudocode, state, call flow diagrams. * Fixing transcoding and signal processing issues in Linux kernel drivers. * Fixing issues with integration with IMS implementations from various telcos. * Fixing distributed signaling-media gateway’s interworking procedures. * Studying the ITU, 3GPP, IETF, W3C standards. ENVIRONMENT ISDN, SS7, NGN, IMS, SIP C/C++, Linux Kernel, SOFIASIP, RESIPROCATE, WEBRTC

PROJECT TeamSpirit® Voice&Video Engine ROLE * Development SIP and XMPP signaling, RTP transport, VNC desktop sharing, intermediate relays. * Implement video streaming integration with WebRTC browsers, VVoIP phones and video conferencing systems (Polycom, Radvision…). * Helped telcos clients with consultancy support, resolving issues. ENIRONMENT C/C++, STL, Boost, Win32, POSIX, Java, JavaScript, Perl, Python, MATHLAB, SIP, XMPP, H.323, HTTP, XML, ICE, STUN, TURN, TLS, RTP/RTCP, BFCP, VNC, RFB, H.264, VP8

PROJECT Network Video Recorder (NVR) compliant with PSIA (psialliance.org) standards. ROLE * Lead video storage team. * Implemented video streaming and recording using RTSP and live555 framework, video storage using MKV format, media tracks settings using SQLite, HTTP and REST. * Reported about bugs to live555 team. ENVIRONMENT C/C++, STL, Boost, Win32, POSIX PSIA, ONVIF, RTSP, HTTP, XML, UPNP, RTP/RTCP, H.264, MPEG-4, MPEG-2, MJPEG, MPEGA, G.711, FFMpeg, SQLite (B-TREE, PAGER, VDBM)

PROJECT "Petrol Plus" is a loyalty and non-cash payment system based on smart cards and used on Petrol stations. ROLE * Designed and implemented payment system prototype, based on new Ingenico iWP200 terminal, in close collaboration with marketing department, successfully shown at the exhibition in Paris, France. * Implemented external card reader support for Ingenico EFT930 series. ENVIRONMENT Windows CE, Ingenico Telium OS, ARM 7 C/C++, Win32, MFC, GSM modems, printers, card-readers, USB, RS232

PROJECT "eSignal Desktop" is a trading platform providing real-time market data streaming, news and analytics. ROLE * Developed technical analysis indicators. * Developed embedded scripting language. * Successfully adopted Agile engineering and planning practices. ENVIRONMENT Windows XP/Vista, CITRIX CC++, STL, Boost, JavaScript, Win32, MFC, ATL, QT, BCG, Rougue Wave

PROJECT "Mediateket DIAT"​ is a solution for TV and media production, compatible with Sony XDCAM. ROLE * Implemented MXF DirectShow plugins to import media from XDCAM systems. * Developed GUI using MFC, GDI. PROJECT "FoxBurner" is a cross-platform DVD and Blu-ray recording SDK. ROLE * Ported from Windows to Mac OS X. * Implemented Mac OS X driver to control DVD driver using SCSI interface. * Implemented Windows file system driver to read encrypted and compressed disks.

PROJECT "Garant system" is a legal information database on all branches of the federal legislation, updated daily, providing for quick searches and analysis of a legal situation. ROLE * Developed tools to reveal cross-references in legal documents. * Helped to improve legal database quality and push it into a new price category. ENVIRONMENT Perl, JavaScript

* Developed tools used to generate monthly and quarterly statistical reports to Ministry of Labor using FoxPro, SQL