Alex Polischuk

Senior Software Engineer at Mavenir

Israel

About

• Experienced Developer with a demonstrated history of working in the telecommunications industry • Quick learning skills and implementation capabilities • Extensive open source modification experience • Experience working with SCRUM methodologies • Worked on both services and packaged software • Deep understanding of VoIP protocols

Experience

  • Senior Software Engineer at Mavenir
    Jan 2018 - Present · 8 yrs 6 mos

    • Design & developing WebRTC Gateway for CPaaS platform, manage WebRTC clients with voice, video, and messages capabilities. • Platform is developed in NodeJS, Typescript. Based on microservice architecture and deployed on AWS, using AWS API Gateway, DynamoDB, Lambda. • Design & development Media gateway for management MCU Media Server in Audio/Video Conference, deployed on K8S

  • Dev Area Owner at Telefónica
    Feb 2012 - Dec 2017 · 5 yrs 11 mos

    • Responsible for design & development of Call Control Server based on FreeSwitch • Writing REST APIs • Custom handling of SIP signaling to support supplemented services, routing options, transcoding and conferencing • Integrated with native OS WiFi Calling service (over IMS SIP) of Apple and Samsung. • Design & development of WebRTC GW and Client SDK for Tu Go Web Application. • Worked in agile / scrum methodologies in C, C++, JS and PHP • Monitored and maintained the service as part of my on-call duty

  • Senior Software Developer at Enghouse Interactive
    Jul 2010 - Feb 2012 · 1 yr 8 mos

    Design, development and maintenance of VOIP Call Center

  • Team leader at Vocaltec
    Apr 1998 - Jul 2010 · 12 yrs 4 mos

    Design and development of a convergence layer for inter-working communication between SIP and H.323 and MEGACO/H248 protocols based on several stack implementations (RadVision, Trillium, etc.). The solution included the integration of Java and C++ layers through JNI interface. Implementation features for Authentications, DNS, NAT, T38, support multiple IPs, Licensing mechanism, Class5 services, SS7/ISUP to SIP and H.323 mapping, Firewall and RTP relay mechanism founded on Linux Kernel iptables API, participation in SIPit Interoperability’s tests sessions. Resolving integration problems for different networks customers.

  • Programmer at Radlinx Ltd.
    1994 - 1997 · 3 yrs

    Design and development of SMTP, POP3 stack modules for a Store and Forward Fax (T37) product.