Oleg Brychev Email & Phone Number

Germany

Creating a real-time, low-latency, distributed scalable platform for modern telecommunications & services. Manage backend dev team, develop new features, develop software architecture, documentations, control and estimate current tasks, hire new employees.Work in international team.Team stack: Node.js, C++, Python, MongoDB, PostgreSQL, ReactJS, WebRTC, Websockets, Debian/Ubuntu Linux, Git, AWS.

Creating a real-time, low-latency, distributed scalable platform for modern telecommunications.Designing system architecture and writing documentations, implementation in source code. Work in international team.Main technologies: Node.js, JavaScript ES 5/6/7/next, ReactJS, HMR, Redux, PostCSS, Webpack, Babel, Chai, Mocha, Eslint, Stylelint, WebRTC, Websockets, MongoDB, PostgreSQL, Debian/Ubuntu Linux. Creating proprietary protocols, frameforks, libs.

Russia, Nizhny Novgorod

Brief information about a company: Switchray offers next solutions for telecommunication companies:• Flexible cost-effective Class 4 / 5 softswitches with carrier-grade VoIP• System solution approach tested for interoperability; SBC included• Software based, configurable with flexible deployment options• Full set of value-added services & bundles with your own OTT solution and branded mobility offerings• Anti-fraud (PBX) --- available on or off-switch• Web Portal for simple configurable branded PBX managementResponsibilities:• "SR-P7000" product development:- User Interface (programming, make-up, design, testing)- Creating web API with Node.js (HTTP REST, ORM, etc).- PostgreSQL Database development and optimizations.- Working with huge amount of data, displaying it in the UI with some special filtering, ordering and etc.- Development of data analysis and reporting system- Stress testing of the product- Helping with a product documentation- Task planning and reporting.- Worked on performance improvement for project• Development of a new product SR-P7500: project architecture of the UI side, web API, design of user interface, choice of software components and technologies.• Configuration and administration of Debian Linux servers , PostgreSQLMain used technologies: Node.js, JavaScript ES5/6, Angular.js, Websockets, HTTP REST, SIP, PostgreSQL (PL/pgSQL, stored procedures), Debian Linux.

Нижегородская Область, Россия

In the first I joined to project "Lintelus Meeting"​ (ex. NiceMeeting) for solving problems with fault-tolerant, scalable service architecture in the main product of company. Some information about project: Lintelus Meeting.Slogan: "Engage Your Audience With Our Interactive Multi-Screen Solution"​.Responsibilities:• Application server development:- server-side JavaScript executed by Node.JS runtime environment;- server may be built as a single executable file, using Google V8 engine and JavaScript code;• Added improvements in NiceMeeting (now Lintelus) proprietary fast object oriented database engine.• Designer of NiceMeeting (now Lintelus) real time messaging protocol with replication support over Socket.IO / SockJS / TCPIP• Designer of master-master replication, databases synchronisation and cluster support. • Worked on perfomance improvement for project.• Created reporting event-based system with Postgresql. Reporting system allows analyse users expirience and activity for whole, get results in different forms: html, excel, pdf and etc.Achievements:• Adding fault-tolerant scalable service architecture and perfomance improvements as result allowed for product to be used on events with 5000+ users ("Cisco Live!"​ Milan 2014), and even 10k+ users at Boston's Architecture Event. * Reporting system was able to work in a real-time and get results very fast event at high loaded events/meetings.Next, Lintelus created team (3 guys) for creating a new product Linteuls Link. I was in this team from the begining of development. Lintelus Link is a scalable cloud based product which allows users to create own presentation and present it to others. As server side (backend) developer of Lintelus Link I designed architecture, created messaging protocol, wrote main parts of the system.

Worked for MySQL high perfomance with huge databases (50+GB) and high inserts/selects/updates per second rate. Worked with Amazone cloud instances, administrate and configure Ubuntu servers for Balakam's systems.Designed system and database architecture for a new project Findstream. Wrote a lot code on SQL (MySQL), C++, shell, php, html.Main idea of the project is gathering information from internet live stream sources that are placed widely accross the world. There were more then 40k links on sources in the database. We created system that can check every source every 5 minutes and writes actual information on the stream in the database. There were a huge amount of information every day. Then this information was analyzed with some special algorithms for getting statistic, metrics, information about quality, frequency, similarity, rank and so on.

Worked for MySQL high perfomance with huge databases (50+GB) and high inserts/selects/updates per second rate. Learn Sphinx's codebase and created own ranker for better phrase searching purpose. Worked with Amazone cloud instances, administrate and configure Ubuntu servers for Balakam's systems.

Joined to project with the working title "Live stream search". There were two developers in this project. We wrote system that can crowl Internet sites, analyse links, frames and objects in the html code of internet pages. Then we created web-site with support full-text search on huge DB of texts and links of real-time streams. This site allowed to user find any live stream by a search phrase. As result we created working prototype, which was shown for investors and next Balakam LLC was found.In this project I worked from the begining and got great expirience in different tasks: development of databases, development of full text search system with Sphinx, development of text processing engines, configuration and administration of servers MySQL, Ubuntu Linuх, Apache; administration of some systems: Cacti monitoring, Redmine bugtracker.

Development and writing of software for working with databases (C ++, MSSQL), the development of systems for reporting, work with the database server MSSQL, support the bank's website, support and counseling users.

LAN Administration, Win2003, Active Directory, 20 workstations, user support and consultation, development and maintenance of databases (MySQL), writing software to work with database(html,php,c++), administration web server Apache, organization of data backup