Experience

Tempesta Technologies Inc.

• United States
• Software Development
• 1 - 100 Employee

• CEO, Founder

  • 2014 - Present

  Leadership of Tempesta FW, an open-source high performance hybrid of a web accelerator and firewall efficiently blocking web attacks and L7 DDoS, development and high-performance and secure custom solutions in the CDN and web hosting areas. Leadership of Tempesta FW, an open-source high performance hybrid of a web accelerator and firewall efficiently blocking web attacks and L7 DDoS, development and high-performance and secure custom solutions in the CDN and web hosting areas.



NatSys Lab.

• United States
• Computer Networking Products
• 1 - 100 Employee

• CEO, Founder

  • Apr 2008 - Mar 2018

  NatSys Lab. is founded in 2008 by software engineers with several years of experience in high performance computing in Linux/x86-64 environment. Our mission is to explore and develop algorithms which can exploit full power of modern multi-core x86-64 hardware and Linux operating system. We provide consultancy and custom software development in the area of high performance, distributed and fault tolerant computing. Custom software development & consultancy in: * Multi-core scalability on modern x86-64 environments and parallel data processing * Analyzing, filtering, shaping and complex transformations of multi-gigabit network traffic at all levels * Transactional distributed databases with specific cache-sensitive indexes * Information security (DDoS mitigation, intrusion detection and prevention, authentication, access control, traffic filtering, VPN) * Deep modifications of large Open Source projects (e.g. Linux kernel, MySQL/InnoDB/Galera, Apache or Nginx HTTP servers)



Schooner Information Technology

• United States
• IT Services and IT Consulting
• 1 - 100 Employee

• Consultant

  • Nov 2010 - Dec 2012

  Worked on SchoonerSQL (highly scalable commercial databased based on MySQL/InnoDB and Galera) replication and functional enhancements. Worked on SchoonerSQL (highly scalable commercial databased based on MySQL/InnoDB and Galera) replication and functional enhancements.



IBM

• IT Services and IT Consulting
• 1 - 100 Employee

• Software Engineer

  • Jul 2006 - Nov 2008

  Consulted teams in Security and UNIX/Linux areas. Developed and managed system-dependent components of resource management system for SAP ERP for xLinux and AIX. Developed regular expressions for XEDIT and IProute in z/VM REXX. Consulted teams in Security and UNIX/Linux areas. Developed and managed system-dependent components of resource management system for SAP ERP for xLinux and AIX. Developed regular expressions for XEDIT and IProute in z/VM REXX.



Yandex

• Russian Federation
• Technology, Information and Internet
• 700 & Above Employee

• Consultant

  • Apr 2006 - Feb 2007

  Performance Optimization and Security Code Analyzing of Web Search server-side applications for Linux, FreeBSD and Solaris. Developed and implemented route distribution of requests between sub-networks in search cluster. Implemented Keep-Alive connections between servers in search cluster. Redesigned algorithm of indexing engine (storing and processing of index). Profiling (using oprofile and gprof) and optimization of memory allocations and network I/O (including analyzing and modifications of g++ STL functions). Optimized fast memory allocator for x86. Analyzed the code for security holes and fixed several FS race conditions, resource exhausting vulnerabilities etc.



Parallels

• United Kingdom
• Musicians
• 1 - 100 Employee

• Linux Kernel Developer

  • Feb 2005 - Feb 2006

  Worked on Virtuozzo Linux kernel modules: FS quotas, virtual FS (VZFS), security fixes and bug fixes ASAP in filesystems, networking, process management and bootstrapping subsystems. Worked on Virtuozzo Linux kernel modules: FS quotas, virtual FS (VZFS), security fixes and bug fixes ASAP in filesystems, networking, process management and bootstrapping subsystems.



Synatra Systems

• United States
• Wholesale
• 1 - 100 Employee

• Network Security Systems Developer

  • Jul 2004 - Feb 2005

  Designed and developed authentication and filtering high performance Proxy Server for Telnet, FTP, HTTP, SMTP and Socks 4/5 protocols (the project was written in C++ for Solaris/SPARC and Linux/x86 platforms). Ported VPN agent's network capturer from Solaris to Linux kernel. Designed and developed authentication and filtering high performance Proxy Server for Telnet, FTP, HTTP, SMTP and Socks 4/5 protocols (the project was written in C++ for Solaris/SPARC and Linux/x86 platforms). Ported VPN agent's network capturer from Solaris to Linux kernel.



Jet Infosystems

• Russian Federation
• IT Services and IT Consulting
• 700 & Above Employee

• Network Security Systems Developer

  • Dec 2002 - Jun 2004

  Developed cryptographic plug-in for a VPN agent based on OpenSSL API (keys material generation, generation and checking of X.509v3 certificates, ciphering of data flows). Implemented IKE module for a VPN agent. Developed, reasoned and implemented protocol for an authentication and keying material generation. Developed cryptographic plug-in for a VPN agent based on OpenSSL API (keys material generation, generation and checking of X.509v3 certificates, ciphering of data flows). Implemented IKE module for a VPN agent. Developed, reasoned and implemented protocol for an authentication and keying material generation.