Ivan Shmakov
Senior VoIP Software Developer at OpenSource
Moscow, Moscow, Russia
Summary
👤
Senior🎓
Top SchoolIvan Shmakov is a Senior VoIP Software Developer with over a decade of experience building high-load, distributed voice and video conferencing systems and gateways. He architects and implements real-time media pipelines (WebRTC, RTP/SRTP, SIP, IMS) and scalable server platforms handling tens of millions of calls monthly, with deep expertise in codecs (H.264/VP8/VP9), NAT traversal, and media encryption. Comfortable across C/C++/Java/Python and cross-platform ARM/x86 environments, he blends low-level protocol work with cloud-native tooling like Docker and message buses (RabbitMQ/AMQP/QUIC). Ivan contributes to prominent open-source XMPP work (Openfire) and has applied his research background in applied mathematics and PhD-level training to practical problems like lip-syncing, 3D talking characters and computer vision in real-time systems. He also brings telecom-grade experience integrating legacy stacks (RTMP/Flash, MMS) with modern WebRTC services and operationalizing large B2BUA/SBC platforms. Colleagues rely on him for tight technical documentation, client consultations, and solving performance bottlenecks in production VoIP clouds.
10 years of coding experience
13 years of employment as a software developer
Applied Mathematic, Applied Mathematic, Applied Mathematic, Applied Mathematic at Национальный Исследовательский Ядерный Университет «МИФИ» (бывший Московский Инженерно-Физический Институт)Ph.D, Mathematic, Ph.D, Mathematic at National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
English, Russian
Github Skills (10)
javas10
xserver10
xmpp10
backend10
back-end-development10
openfire10
java10
database-schema9
database-design9
sql8
Programming languages (4)
Github contributions (5)
igniterealtime/Openfire
Jul 2015 - Dec 2015
An XMPP server licensed under the Open Source Apache License.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 6 PRs, 4 comments in 5 months
Contributions summary:Ivan primarily contributed to the Openfire XMPP server backend, with a focus on the monitoring plugin and archive functionality. Their work includes fixing bugs related to message collection counts, implementing last page requests, and addressing issues with the "max" tag in list requests. They also made changes to the routing table and MUCEventDelegate, indicating a deep understanding of the server's core mechanics.
openfirexmpp-serverxmpplicensedapache-license
ishmakov/Openfire
Dec 2015 - Dec 2015
Contributions:3 pushes in 1 day
licensedxmpp-serverxmppapache-licenseapache
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