{"id":420,"date":"2026-03-11T06:22:33","date_gmt":"2026-03-11T05:22:33","guid":{"rendered":"https:\/\/www.kamailioworld.com\/k2026\/?page_id=420"},"modified":"2026-04-24T12:24:13","modified_gmt":"2026-04-24T11:24:13","slug":"speakers","status":"publish","type":"page","link":"https:\/\/www.kamailioworld.com\/k2026\/speakers\/","title":{"rendered":"Speakers"},"content":{"rendered":"\n
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Alexandr Dubovikov<\/h3>\n\n\n\n
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He is CTO for QXIP B.V. Alexandr holds a diploma in physics of Odessa State University. He has 25 years of experience in telecommunication techniques and has contributed to many OpenSource projects like FeeeSwitch, SER, Kamailio, SEMS, Asterisk, SIPP, Wireshark. Alexandr is the founder and main developer of Homer SIP Capture project.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Andreas Granig<\/h3>\n\n\n\n
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He is the founder and CTO of Sipfront, Austria, working in telecoms since 2000 and has since designed, developed and deployed a hundred kamailio\/rtpengine based VoIP systems. Back at Sipwise, he has founded and steered the rtpengine project and is now working on Test Automation at Sipfront. At Kamailio World, Andreas will share his challenges and approaches with 25 years of Do\u2019s and Don\u2019ts in Telecom QA.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Andreas Tarp<\/h3>\n\n\n\n
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He is VoIP and telecom engineer at Sipgate, Germany, working for many years with Kamailio and other open source real time communications projects. Previously, Andreas worked as solution architect at Ericsson and he has a master of science from University of Dusseldorf.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Daniel-Constantin Mierla<\/h3>\n\n\n\n
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He co-founded Kamailio<\/a> in June 2005, aiming to build a solid SIP server project where openness to community and contributions has an important role, previously being core developer of SIP Express Router (SER) from its early beginning in 2002. He has a Master degree in Computer Science and Engineering from the Polytechnics University of Bucharest. His experience was accumulated working as consultant for Orange Romania, branch of French Orange mobile operator, and researcher in network communications at Fraunhofer Fokus Institute, Berlin, Germany.<\/p>\n\n\n\n

His activity is done at Asipto,<\/a> a company targeting to offer and build reliable services and solutions that benefit at maximum from Kamailio\u2019s flexibility and features, sharing knowledge and expertise via professional trainings and consultancy. Daniel is leading the development of the Kamailio project and he is member of its management board.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Dan Bogos<\/h3>\n\n\n\n
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He is the founder of ITsysCOM, experienced communications architect and VoIP specialist. Dan is a double graduate of Politehnica University, Timisoara, with post-graduate specialisation in Communication Protocols and Software Development. A frequent and well-known contributor to the Open Source community, most noticeably being the co-founder of CGRateS Project, Dan is a firm believer in merging the very best production-ready software to create high-quality, scalable and cost-effective communications solutions.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Dan Jenkins<\/h3>\n\n\n\n
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He is the founder of Everycast Labs and Nimble Ape, a consultancy specialising in real-time communications, VoIP, and voice AI. With deep expertise in SIP, WebRTC, and telecommunications infrastructure, Dan works with businesses to build and integrate voice solutions; from carrier-grade SIP platforms to AI-powered voice agents. He has contributed to and created multiple open source projects. He has extensive experience with projects like Pipecat, Kamailio, Asterisk, and FreeSWITCH. Dan is an editor of the WHEP specification at the IETF and is building vcon.store, a hosted VCon conserver service.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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David Duffett<\/h3>\n\n\n\n
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He is the former Worldwide Community Director of the Asterisk open source project when it was in the hands of Digium, and has enjoyed many years of participation in the open source communications world \u2013 having run AstriCon from 2012 to 2018 and spoken at many telecoms and community events all over the world.<\/p>\n\n\n\n

David now works with Simwood to support the open source community, in addition to running \u2018Let the Geek Speak\u2019, his business devoted to helping Engineers and Tech Pros enhance their careers by being better communicators and presenters.<\/p>\n\n\n\n

Simwood is a long-time supporter of the Kamailio open source project, with Simon Woodhead (our founder) having been to a number of Kamailio World events, and Charles Chance (our CTO) being a Kamailio developer with write access since 2013.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Dragos Vingarzan, Dr.<\/h3>\n\n\n\n
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He is a founder of Neat Path Networks, a company focusing on real time communication solutions for mobile networks. Previously, he was a founder of Core Network Dynamics and the Chief of Engineering, a company acquired by Twilio. Dragos is the software architect and developer behind the OpenEPC project as well as the founder of the initial Open Source IMS Core project (now integrated in Kamailio), when he worked as a researcher at Fraunhofer FOKUS Institute<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Dorgham Sisalem, Dr.<\/h3>\n\n\n\n
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He is the CEO of FRAFOS, a company specializing in Session Border Control and VoIP monitoring solutions. With over 30 years of experience in the VoIP industry, he has contributed both to foundational research and large-scale commercial deployments. As a researcher at Fraunhofer FOKUS, he was heavily involved in advancing the theoretical and technical foundations of VoIP. Later, at Oracle, he was managed the rollout of major commercial VoIP services.<\/p>\n\n\n\n

Before founding FRAFOS, Dorgham successfully established and grew two VoIP startups: iptel.org (acquired by Tekelec) and iptego (acquired by Acme Packet). During his time at Fraunhofer, he led the MOBIS department, a team of researchers and developers that initiated the SIP Express Router (SER) project in 2001.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Elena Darriba<\/h3>\n\n\n\n
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She is a Senior Voice Engineer at CloudTalk specializing in distributed SIP architectures and scalable real-time communication platforms. Her background includes early experience at Quobis, where she built a strong foundation in SIP and Kamailio-based systems, followed by work on large-scale and mission-critical projects at Ericsson. With over 10 years of experience in VoIP services, she has extensive hands-on expertise with distributed SIP systems, production-grade signaling infrastructures, and cloud-based deployments in AWS. She focuses on designing resilient, high-availability RTC infrastructures and solving complex signaling challenges in distributed environments.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Elena-Ramona Modroiu<\/h3>\n\n\n\n
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She is a co-founder of Kamailio project, being also member of its management board. Her involvement in VoIP started by joining SER (SIP Express Router) in the spring of 2003, just after several months since the project was publicly released. She became one of the most active contributors, with key modules like avpops, diameter support, pdt, speeddial, uac, xlog. Elana-Ramona has a Master degree in Computer Science and Engineering from the Polytechnics University of Bucharest, Romania, completing the studies at Politechnics University of Valencia, Spain, and Fraunhofer Fokus Institute, Berlin, Germany.<\/p>\n\n\n\n

Nowadays she is a senior researcher at TU Berlin and COO of Asipto. Part of her activity involves researching on future 5\/6G technologies. Long time ago, she started Siremis<\/a> Project \u2013 an open source web admin application for Kamailio \u2013 and has authored many tutorials about the Kamailio project, including Devel Guide, Pseudo-Variables Cookbook or Radius Integration.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Fred Posner<\/h3>\n\n\n\n
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He is one of the most active Kamailio community members in USA, promoting the project at many conferences in North America, being also member of the management group. Fred developed and offers the APIBan.org as a free service to help preventing the unwanted SIP traffic from bad actors. He provides VoIP consulting services through The Palner Group and LOD Communications.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Giacomo Vacca<\/h3>\n\n\n\n
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He has been developing RTC solutions since 2001. A long-time user, promoter, and occasional contributor to open-source projects in this space, he has worked at Truphone, Linphone, Nexmo, and Subspace among others. Giacomo now leads the API Developer Experience team at SignalWire.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Henning Westerholt<\/h3>\n\n\n\n
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He is an open source developer and senior IT operations and software development manager. Throughout his career, he has been responsible for various products at IT service providers and for the internal IT departments of several large manufacturing companies in Germany. He offers consulting services for Kamailio and VoIP services in the areas of performance, reliability and security. Henning has been one of the core developers of the Kamailio open source project since 2007 and is a member of the Kamailio management team.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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James Body<\/h3>\n\n\n\n
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He is a veteran of the communications industry, having started his career in the days of thermionic valves and rotary dial telephones. James has used SIP Express Router, OpenSER and Kamailio in a variety of roles over the years and is an energetic advocate for Open Source Software. Today he is CEO of Telet Research<\/a>, a Northern Ireland based company who build mobile network infrastructure to facilitate Multi Operator Neutral Host (MONeH) operation for anyone who wishes to run their own mobile Radio Access Network. James is also one of the founders of the CH4LKE Mobile network \u2013 a Community Interest Company located in the beautiful Chalke Valley in South West England.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Jan Janak, Dr.<\/h3>\n\n\n\n
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He obtained his Ph.D. from Columbia University and his research interests include internet services and protocols, cyber-physical systems (internet of things), distributed computing, operating systems, and mission-critical communications systems and protocols. Jan received a Master degree in Computer Science from the Czech Technical University in Prague and worked at the Fraunhofer Institute for Open Communication Systems (FOKUS) in Berlin, Germany. He is one of the members of the initial development team of SIP Express Router (SER) project.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Jiri Kuthan<\/h3>\n\n\n\n
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He was founder and CTO of IptelOrg, the company that provided commercial services for SIP Express Router (SER). IptelOrg was acquired by Tekelec in 2015. Historically, he had been with FhG Fokus Institute, part of the initial team working to build SER, graduated from the University of Salzburg back in 1998. More recently, Jiri was CTO of Intuitive Labs, focusing on VoIP security, monitoring and cloud infrastructure.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Jonathan Kandel<\/h3>\n\n\n\n
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He is blockchain and backend engineer with hands-on expertise in Python, Solidity, Circom, and full-stack TypeScript and Node.js ecosystems. I design and build secure, privacy-focused decentralized systems, leveraging strong cryptography, scalable architectures, and cross-platform development (Java and Swift). With experience developing two Kamailio’s modules for cryptographic operations and authentication.<\/p>\n\n\n\n

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Julien Chavanton<\/h3>\n\n\n\n
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He is a Senior Software Engineer and founder of Raven Technologies Inc., specializing in VoIP and real-time communications systems with over 20 years of industry experience.
He is a significant contributor to major open-source projects including FreeSWITCH, Kamailio, and voip-patrol with expertise in low-level systems programming using C\/C++, Go, and eBPF\/XDP.<\/p>\n\n\n\n

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Iurii Gorlichenko<\/h3>\n\n\n\n
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He is a VoIP and RTC expert and consultant, with focus on scalable and resilient architectures for RTC systems. With over 15 years of experience in WebRTC, VoIP, IMS, Web technologies, and networking, Iurii contributed as RTC systems expert to various communication service providers and real-time communications platforms, including MessageBird (now Bird) and Dolby.<\/p>\n\n\n\n

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Lorenzo Miniero<\/h3>\n\n\n\n
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He is getting older but, unlike whisky, he’s not getting any better. Besides working on the open source Janus WebRTC Server, the imquic library and other projects, he recently had a middle age crisis and got back to old passions, like writing and publishing music using open source software, and trying to write a point and click adventure game engine.<\/p>\n\n\n\n

He’s the chairman and co-founder of Meetecho, a company providing both consultancy services and communication platforms. He got is degree and Ph.D at the Computer Science Department at the University of Napoli Federico II, where he started working on multimedia conferencing and met the colleagues with whom he co-founded Meetecho as an academic spin-off. He is an active contributor to the Internet Engineering Task Force (IETF) standardization activities, especially in the framework of real-time multimedia applications. He is most known as the author of Janus, a general purpose and open source WebRTC server.<\/p>\n\n\n\n

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Mack Hendricks<\/h3>\n\n\n\n
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He obtained a Bachelor and Masters of Science in Computer Science from Oakland Univ. Mack has worked for large Silicon Valley-based companies for most of his 20-year career, including 5 years at Sun Microsystems and 10 years at Oracle Corporation. In parallel, he has built companies in the restaurant and technology sector. <\/p>\n\n\n\n

One primary principle driving Mack is setting up a framework that allows generational wealth to grow and be passed down to his kids, grandkids, great grandkids and so on.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Markus Monka<\/h3>\n\n\n\n
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He is the head of IT and VoIP infrastructure at sipgate.de, the company that offers a cloud-based phone system with extensive business features. Since 2003 sipgate have been using SER, OpenSER and Kamailio, along with other open source projects. Beside landline networks, sipgate operate their own mobile core as MVNO, being connected directly with many carriers. With about 280 people that work in D\u00fcsseldorf in a lean and agile way, sipgate has supported Kamailio project to organize many of its community events, such as 10 Years SER, Kamailio Development Workshops and Kamailio World Conference.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Roman Onic<\/h3>\n\n\n\n
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With more than 20 years of experience in telecommunications R&D, he started his career with 2G\/3G voice core development and moved to GPRS\/UMTS packet core development. Currently Romani is working in R&D for mission critical systems based on IMS architecture at Kontron Transportation GmbH based in Vienna, Austria, using different access types (e.g. LTE or non 3GPP). Apart of that, he is interested in DevOps and responsible for a so-called Platform team. They deploying their in-house solutions on several different platforms which includes public clouds and on premise deployments using Red Hat OpenShift or OpenStack depending on customer needs.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Sandro Gauci<\/h3>\n\n\n\n
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He leads the operations and research at Enable Security. With a long history and extensive experience in cybersecurity dating back to 2000, Sandro has been at the forefront of hacking software and phone systems from a young age. He is the original developer of SIPVicious OSS, the SIP security testing toolset. His approach combines deep technical expertise with innovative offensive security strategies, focusing on the vision of the company, designing cutting-edge security tools, and conducting thorough security research and testing. This has earned him the title of Chief Mischief Officer (and also CEO) at Enable Security.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Tim Panton<\/h3>\n\n\n\n
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He is the CTO at pi.pe GmBH \u2013 who license a cleanroom webRTC stack to connected camera makers (e.g. baby monitors, race cars etc). He has been doing webRTC since before it was a thing, writing code, fixing bugs, listening to people and contributing to open standards (IETF + W3c) and open source protocols (SNMP, SRTP,ICE, SCTP etc).<\/p>\n\n\n\n

His earlier projects range from management code for ESA\u2019s Infrared space telescope, an internet vulnerability scanner and an app providing video-calling for pets.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Varun Singh<\/h3>\n\n\n\n
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He has a PhD in Congestion control, was CEO of callstats.io, an observability platform. He has coauthored 12 IETF RFCs and W3C Specs on RTP\/RTCP. He is now CTO of Daily.co, which is the most popular vendor-agnostic open-source voice orchestration framework.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Victor Seva<\/h3>\n\n\n\n
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He is a senior VoIP developer based in Spain. Victor has been a very active contributor to Kamailio for more than a decade, with many enhancements to the Lua interpreter, debugger, cfgt and other modules, he has build the continuous integration ecosystem for Kamailio development with Docker, Travis-CI and Jenkins. Victor is member of Kamailio management team and a registered Debian developer, maintaining also the packages for Kamailio in the official Debian distribution.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Viktor Litvinov<\/h3>\n\n\n\n
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He has been working in VoIP for over eight years, currently at Net2Phone, a subsidiary of IDT Corporation. Viktor graduated from the Kyiv Polytechnic Institute with a degree in Electronic Engineering, his main area of interest is building and testing scalable and secure RTC platforms.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Wolfgang Kampichler, Dr.<\/h3>\n\n\n\n
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He is initiator and co-developer of DEC112, a private initiative to provide accessibility to Austrian emergency services. As principal scientist at Frequentis AG, Wolfgang actively contributes to innovation and technical expertise for future public-safety communications technologies in Europe and abroad. He is an engineer who started his career as a research assistant at the Department of Computer Science at Vienna University of Technology and attained a doctorate degree in technical sciences in 2002. Wolfgang supports standardization working groups in public safety (ETSI SC EMTEL) and air traffic management (EUROCAE) and is co-chair of the European Emergency Number Association (EENA) Technical and Operational Committee.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Alexandr Dubovikov He is CTO for QXIP B.V. Alexandr holds a diploma in physics of Odessa State University. He has 25 years of experience in…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-420","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.kamailioworld.com\/k2026\/wp-json\/wp\/v2\/pages\/420","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kamailioworld.com\/k2026\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.kamailioworld.com\/k2026\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.kamailioworld.com\/k2026\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kamailioworld.com\/k2026\/wp-json\/wp\/v2\/comments?post=420"}],"version-history":[{"count":49,"href":"https:\/\/www.kamailioworld.com\/k2026\/wp-json\/wp\/v2\/pages\/420\/revisions"}],"predecessor-version":[{"id":670,"href":"https:\/\/www.kamailioworld.com\/k2026\/wp-json\/wp\/v2\/pages\/420\/revisions\/670"}],"wp:attachment":[{"href":"https:\/\/www.kamailioworld.com\/k2026\/wp-json\/wp\/v2\/media?parent=420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}