Hire the best Kamailio specialists
Check out Kamailio specialists with the skills you need for your next job.
- $150 hourly
- 5.0/5
- (250 jobs)
A Top-Rated, Expert-Vetted VoIP/Software engineer with over 20 years of experience. My experience ranges from Asterisk/FreePBX phone systems, SMS messaging, Linux operating systems, to network administration. I believe you deserve a more professional, reliable, and personalized business experience, and I bring that mindset to every project. Whether I’m developing top-secret code for Lockheed Martin, or AI telephone agents for Nomo, or creating privacy-first communications for Mecca Hosting, Inc, or designing secure, high availability Asterisk systems for TeleConnx Inc., or handling difficult troubleshooting tasks, I always commit myself to the same standard: creative, client-first solutions and efficient, high-quality work, completed in a fraction of the time. I have a passion for transforming mundane phone interactions into exciting customer experiences, and I lean on decades of experience to create solutions that others would find impossible. In short, I can make your telephone system do pretty much anything, including turning on your coffee maker in the morning. I look forward to working with you!Kamailio
FreePBXMySQLLinux System AdministrationAmazon Web ServicesVoIP AdministrationAsteriskAPI DevelopmentCVoIP SoftwareLAMP AdministrationSession Initiation ProtocolLinuxVoIPBusiness with 10-99 Employees - $200 hourly
- 5.0/5
- (227 jobs)
With over two decades of extensive experience in the world of programming, I've honed a knack for efficiency and innovation. I believe in optimizing time and delivering solutions that matter, constantly pushing the boundaries of what’s possible. From the age of 10, programming hasn't just been a job—it's been a calling. Whether you're looking for new project development or leveraging existing solutions, I’m your go-to expert. Experience: Twenty-two years of diverse commercial programming experience and 31+ years overall programming —from Linux administration and virtualization to end-user web development and complex billing systems for VoIP. Expert work with Asterisk since its inception and substantial experience with FreePBX, Trixbox, and a2billing. Proudly, I'm one of the contributing minds behind a2billing.org's trunk. My depth of expertise encompasses database administration and architecture, especially with MySQL and Postgres. Education: Master of Science in Computer Science (confirmed by WES) Technical Skills & Specializations: Languages: Python/Django, Javascript/jQuery, SQL, PHP, C/C++, Perl, Prolog/Lisp, and Forth. Platforms & Tools: Asterisk, Opensips, Kamailio, Callweaver (faxing). Noteworthy Contributions: Developed modules for FreePBX, Elastix, Trixbox, and a2billing. Philosophy: I stand for originality and meaningful impact. If a task doesn’t need to be done, I won’t push for it. Instead, I'll direct my energy towards novel and intriguing challenges, ensuring that you get the best of both worlds—innovation and efficiency.Kamailio
Session Initiation ProtocolC++PHPAsteriskMySQLAmazon EC2Linux System AdministrationSQLElastixA2BillingVoIP AdministrationOpenSIPSFreePBXVirtualizationPython - $40 hourly
- 4.8/5
- (25 jobs)
1. Expert in IP solutions (RCS-GSMA) with open source experiences. 2. Having experience in IMS (IP Multimedia Subsystem) solutions. 3. Having 10 years of experience towards kamailio and opensip projects. 4. Expertise in SIP,SDP,RTP,MSRP,HTTP,DIAMETER,SMPP protocols 5. I can develop custom modules in kamailio,opensip projects 6. Moderate in freeswitch, fusion PBX and asterisk 7. Mainly solution architect in VOIP 8. Well experienced with TCP,UDP and SCTP transport stacks. 9. Well experienced with wireshark and Homer utilitiesKamailio
Session Initiation ProtocolIP Multimedia SubsystemOpenSIPSVoIP AdministrationVoIP SoftwareRich Media - $50 hourly
- 5.0/5
- (172 jobs)
I am consistent "Top Rated Plus" VoIP Developer on Upwork with numerous 5 star reviews including excessively positive feedback. 13+ years of experience in Custom VoIP Software Development. I have provided a wide range of IT solutions, including VoIP Development, Websites & Mobile Apps development for international businesses and start-up companies as well as for large enterprises. 🏆 Following are my area of experiences: ✓ VoIP / SIP / RTP ✓ OpenSIPs / Kamailio / OpenSER ✓ FreeSWITCH, FusionPBX, ASTPP, Lua Scripts ✓ Asterisk, FreePBX, A2billing ✓ RTPengine / MediaProxy / RTPproxy ✓ Twilio ✓ Linux & OpenSource Consulting ✓ MariaDB, MySQL, PostgreSQL (Database design & complex SQL query expert) ✓ PHP, Yii/Yii2, Apache, Nginx ✓ Android 🏆 I provide the following solutions: ✓ High scalable Least Cost Routing(LCR) with Fail-Over ✓ Session Border Controller(SBC) ✓ Click to call ✓ Class4 & Class5 Soft Switches ✓ SIP Proxy Server, SIP Load Balance & Fail-Over ✓ SIP Messaging Server, SIP Redirect Server ✓ IVR Application ✓ Fax over IP (FoIP), T38 Supported FAX Server, FAX to Email ✓ Shoutcast Server ✓ WebRTC SIP client ✓ PHP RESTfull API, Web Services for Mobile Application ✓ Web Applications ✓ Mobile Applications. My core competency lies in complete end-to-end IT solutions for VoIP, Web, and Mobile technologies. 👤 Reviews & feedback given by clients for successfully completion of largest projects ⭐⭐⭐⭐⭐ "Malay is an excellent VoIP expert and was able to do any task we could throw at him. Will be using his services again shortly as our go-to VoIP expert." ⭐⭐⭐⭐⭐ "Excellent at meeting deadlines. Outstanding at changing work hours to conform to my requirements. First-rate productivity levels. Extremely good communication and ability to explain and brainstorm in a group environment. Admirable at working with other random developers I brought into the project throughout the years. Malay and his team at Prayantech were able to tackle any task I through at them from Asterisks, FreeSwitch, Python PHP HTML JS Debian RHEL IP Tables working inside of multiple different cloud hosting environments his understanding of VPN and firewall security are excellent. I can’t say enough good things about this group I am certain we will be working together as a team for many years to come." ⭐⭐⭐⭐⭐ "Malay and his team were great to work with. Once we got in a flow, we were able to bring something to life I could not have done without him and his team. He was extremely aware of timelines and making time for our project during our "open hours" and working around the time change. Thank you Malay! Keep up the great work and I look forward to working with you soon!" ⭐⭐⭐⭐⭐ "It was a pleasure working with Malay. Very professional and to the point. they don't waste time and they want to finish your project as much as you want to."Kamailio
MySQLOpenSIPSFreeSWITCHYiiPHPYii2APIVoIP SoftwareAsteriskMariaDBSession Initiation ProtocolLinux System AdministrationDatabase AdministrationVoIP AdministrationVoIP - $45 hourly
- 4.9/5
- (291 jobs)
Hello everyone, I have worked as professional software developer for more than 20 years and have good experiences in: -Asterisk, FreePBX, Vicidial -FreeSwitch, FusionPBX -Kamailio, OpenSIPs -JavaScript, React, Vue, Node.js and HTML/CSS, -WebRTC -PHP/Laravel, MySQL -Linux System Administration -c/c++, rust I'm always working in a friendly environment so that we can make long term business relationship. I feel honored to have a continuously growing list of happy clients with positive feedback on my work.Kamailio
Call Center SoftwareLinux System AdministrationPHPReactNode.jsVue.jsJavaScriptTypeScriptMySQL ProgrammingOpenSIPSFreePBXFreeSWITCHAsteriskVoIP PBX - $100 hourly
- 5.0/5
- (90 jobs)
Greetings! I am a proficient VoIP developer with a focus on Asterisk, Kamailio, and PHP Laravel, backed by substantial experience in backend development. Beyond this, I possess a strong AI background, enabling me to create cutting-edge VoIP solutions enriched with artificial intelligence capabilities. My Expertise Includes: VoIP: Asterisk, Kamailio, RtpEngine, SIP, RTP, SRTP, Call Center Solutions: Twilio, Sip trunk, Numbers Automation & Autopilot: Enhancing efficiency through smart processes Web Development: PHP Laravel, API development, Laravel Nova, Frontend Technologies: Vuejs, Tailwindcss, TailwindUI Database: Mysql, Redis, JSON for data storage and retrieval Version Control: Git, Github, Gitlab, Bitbucket, Gitflow Agile Project Management: Jira, Scrum, Trello for streamlined collaboration Server & Infrastructure: Linux, Centos, Ubuntu, Firewall, Fail2ban, Virtualization DevOps: Docker, Kubernetes, ensuring smooth and scalable deployments AWS: EKS (Elastic Kubernetes Service), ECS (Elastic Container Service), and comprehensive knowledge of other AWS services for a robust cloud infrastructure. AI Integration: Utilizing AI in VoIP solutions, including Text-to-Speech and Speech Recognition, to deliver personalized and interactive experiences over the phone. Chatbot Implementation: Creating intelligent chatbots for seamless communication and enhanced customer support in VoIP applications. I am enthusiastic about leveraging AI technologies to revolutionize VoIP solutions, providing exceptional user experiences and increased efficiency for your projects. Let's collaborate on long-term ventures and harness the potential of AI to transform your VoIP systems. Please feel free to reach out, and let's explore the possibilities together!Kamailio
VoIP AdministrationTelecommunicationsVoIPApplication IntegrationAsteriskTelecommunications EngineeringVoIP SoftwareLinux System AdministrationAPI DevelopmentLaravelAPI IntegrationPHP - $40 hourly
- 4.9/5
- (22 jobs)
- Core VoIP development (embedded platforms) - VoIP systems & Appliances customization (Asterisk & FreePBX / Elastix / ViciDial, Freeswitch & FusionPBX) - SIP routing, hands on experience - over 10k calls per day (or 50+ concurrent calls) - vast knowledge of backend programming languages (C++, Perl, Python, Bash, Lua, PHP, MySQL stored proc) - Linux Security & Intrusion detectionKamailio
FreePBXAutomatic Speech RecognitionLinux System AdministrationWebRTCProject ManagementBashVoIP AdministrationAsteriskPerlPHPPythonMySQL - $45 hourly
- 5.0/5
- (23 jobs)
My experience in the VOIP domain has been for 15 years. My customer satisfaction is my goal. I have extensive experience with Asterisk/Kamailio systems, as well as Linux and network administration. I have the ability to do advanced troubleshooting . My expertise on this: * Asterisk, Kamailio, OpenSips, FreePBX, A2billing, SIP, H323, IAX, Webrtc, hylafax, Asterisk-Pannel, iaxmodem, rtpproxy, MediaProxy, WebRTC, SipML5, SMS API, IVR (Interactive Voice Record),Wireshark * IP routing, router configuration (cisco, iptables routing), switch, Vlan, VPN (Ipsec linux, cisco vpn, fortigate, OpenFire). * Fail2ban, Iptables, OpenSwan, Squid, Cisco FirePower, Vmware, Proxmox * Php, Mysql, Postgresql, sqlite, Mongodb, Bash , LUA , Java, AGI, AMI * Roundcube, Zimbra, Zabbix, Smokeping, munin, Nagios, Cisco NetFlow, Voipmonitor * Git, Ansible, bitbuket, atlassian My time is my value. So when you choosing me you can expect that job will be done in short terms and perfect. I don't like to do something that not need be done. @linkedin linkedincom/in/alaeddine-hertelli/ SKYP:alasupcom1Kamailio
OpenSIPSFreePBXPostgreSQLWiresharkAsteriskSession Initiation ProtocolVtigerIptablesMySQLBash ProgrammingPHPNetwork EngineeringLinuxVoIP - $50 hourly
- 5.0/5
- (20 jobs)
- Technologies: Kamailio, RTPEngine, Freeswitch, WebRTC, Flexisip, Asterisk - Protocols: SIP, SDP, RTP, websocket - Test Tools: sipp, sipsak, twinkle-console - Debug Tools: sngrep, ngrep, tcpdump, wiresharkKamailio
VoIP SoftwareVoIPAnsibleC++BashVoIP AdministrationCNetwork EngineeringSoftware DebuggingPython - $50 hourly
- 4.8/5
- (17 jobs)
I'm a senior C, C++ developer with a passion for working on complex high-performance, and low latency systems for telecommunications like own Media Server to Media and Signaling servers like Freeswitch, Kamailio, OpenSIPS, JANUS, Kuranto, and JITSI. Furthermore, I started working on AI in the last six years and worked on ChatBots and VoiceBots. - Have a perfect experience on NLP/NLU open source and cloud platforms like Google dialog flow and Microsoft Luis. - Create custom Modules of Freesiwtch and JANUS for Google, Amazon, IBM Speech To Text, and Text to Speech for real-time transcribers. - Create Conversational IVR and Voice Translator with the help of Google And Amazon. - Real-Time text-to-speech and speech-to-text with NLP/NLU. - Real-Time translator using Google. - good experience in Server Side audio processing and sending audio to any channel. - Excellent experience on Kaldi, Rasa(NLP, NLU), and Python Wavenet library to train models. ✅ Technical Skills : - Development: C/C++, Python - Opensource: TensorFlow, Rasa, WebRTC, reSIProcate - Technology: SIP, Audio/Video, NLP, NLU, Kaldi, deep speech(Mozilla). - Tools (Master): Wireshark, SIPp - Having enough experience with VoIP library for iOS, Android & Windows in C, and C++. - Having experience in VoIP clients and server development. ✅ Develop for all the platforms you need. We cover: - Web - iOS and Android phones and tablets Develop web apps that work on mobile browsers, e.g., video chats, audio and video calling, and audio-video SDK. We help to plan your product and develop it so that users love it. Work with companies and startups to create new products and improve existing ones. ✅ Have the right processes you know in advance. Ours: 1 - Sales managers are 1st level, software analysts. They clarify your needs. You get 3 results: what users can do - user stories, recommended technologies, and estimate based on previous projects. 2 - Analysts clarify details and draw wireframes. They are mockups of all the pages with clickable buttons. So you can play with your app before it’s developed and make changes for cheap. Based on wireframes, we calculate project time and price estimation. 3 - Designers draw clickable graphic design prototypes. 4 - A team of developers, test engineers, and a project manager develops the product. 5 - The team installs it on your server and helps with app store submission. We do maintenance - part-time work on minor improvements after launch. Write to discuss and estimate your project. We give user stories and recommend technologies for free after a call. Without a call, we can’t do it well, unfortunately. All the right questions in writing would have taken days and still much missed. Answer the same workday. On weekends we rest, but if you have a chance - respond too. So please write to us now :)Kamailio
React NativeSession Initiation ProtocolLLM Prompt EngineeringLLM PromptBot DevelopmentVoIPWebRTCOpenSIPSFreeSWITCHVideo StreamSwiftDialogflowArtificial IntelligenceNode.jsKotlinC++ - $35 hourly
- 4.4/5
- (111 jobs)
Over 14+ Yrs experience in VoIP (Asterisk, Freeswitch) & WebRTC Softwares (Jitsi, Janus, Kurento, Wowza) Development, Media Streaming, Server Architectures, Web & Smartphones Applications WebRTC Application Development - Audio & Video Conferencing - WebRTC, Jitsi, Twillio, OpenTok, Kurento - Screen Sharing, Recording - Online Tutoring and E Learning - Telemedicine and Health Applications - Video Broadcasting and Live Streaming - SFU, STUN & Multiple Server architectures VoIP Service: - Asterisk/Freeswitch/OpenSIP/Kamilio setup & Configurations - PBX System & Software Development - Unified Communication Software - CallCenter Softwares - DID Management - Auto/Predictive Dialer - Mobile or Sip or VoIP Dialers - Real Time billing software - Distributed Server Architecture - Load Balancing and failover setup - Server Administration, Maintenance & 24*7 Support IOS/Android Apps Development: - Location Based Applications - GPS Based Application Development - Social Networking - SMS, IM Chat Implementation - Travelling, Navigation, and Weather forecasting Apps - VoIP/SIP Dialer - Restaurant, Marketplace, Ecommerce Applications Website and Web Application Development - Static/dynamic Site design & Development - PHP, Laravel, Yii2 - Ecommerce Sites - Content Management System - Full Stack Development (Node.js, React, Angular, ReactNative, Vue.js) Technology, Platforms and languages expertise: Frontend Web: Angular, React.js, Vue.js, PHP Backend: Java, PHP, Laravel, Node.js, Python Mobile: Swift, native, react native, Kotlin, Electron Others: Websocket, Github, Gitlab, Bitbucket, Jira, auth0, Firebase, Ejabbered Cloud Solution: AWS, Google cloud, Azure, Digital Ocean, Hetzner CI/CD: Gitlab CI, Bamboo CI, Bitbucket CI, Jenkins WebRTC: Native, Kurento, Tokbox, Jitsi, janus, OpenVidu VoIP: Freeswitch, Asterisk, Twillio, Kamilio, FusionPBX, FreePBX, SIPJs Web Server: Nginx, ApacheKamailio
Video StreamStreaming PlatformWeb DevelopmentReactAndroid App DevelopmentiOS DevelopmentFlutterAndroidReact NativeNode.jsVoIP SoftwareAsteriskFreeSWITCHWebRTC - $50 hourly
- 5.0/5
- (18 jobs)
I am a VoIP professional with over 12 years of experience. I am an expert in Asterisk, Freeswitch, SIP Trunking and provide consultations on these to my clients. Throughout my experience I have designed and developed a number of VoIP, Telecom Solutions like IVR Systems, Autodialers, Conferencing Solutions and Voice Mail solutions from scratch. I develop solutions over multiple programming languages like Javascript (NodeJS), PHP, Java using Asterisk (ARI, AMI and AGI) and Freeswitch (ESL). I also provide support for installation, configuration and maintenance of Asterisk, Freeswitch and other VoIP Switches.Kamailio
WebRTCFreeSWITCHSession Initiation ProtocolVoIP SoftwareAsteriskLinux System AdministrationJavaScriptNode.jsVoIP AdministrationTwilio APIPHPWeb Service - $30 hourly
- 3.7/5
- (28 jobs)
I am working In VoIP , Android and iOS since last 10+ year. I have provided wide range of Technical solutions in VoIP, WebRTC, Website and Mobile Application development areas to startups , mid level and enterprise companies. I have expertise with VoIP mobile development, Android/iOS application development, Flutter Development, ReactNative Development and Web application developments with specialty in developing Asterisk, FreeSWITCH, OpenSIPs, Kamailio, OpenSER, VoIP/SIP, ASTPP, WebRTS and Mobile VoIP based solutions. I have worked on 25+ Linphone, PJSip and WebRTC Based Mobile VoIP Diallers with 100% Client satisfaction. I can also provide customized Class-4 and Class-5 Softswitch for your VoIP business. Please refer below services I can provide. - Linphone Mobile VoIP Dialler development - PJSIP Mobile VoIP Dialler development - Asterisk Server Installation, development , customization and maintenance. - FreeSwitch Server Installation, development , customization and maintenance. - Kamailio and OpenSips Server Installation, development , customization and maintenance. - Android Application development - iOS Application development - Web Application Development - RectJS and ReactNative Web and Mobile Application development. - Testing and bug fixing in existing applications. - Consulting for ongoing projects. - Can provide consulting for projects related to Android, iOS, ReactJS, Asterisk , FreeSwitch , Opensips, Kamailio, ASTPP, RTPengine, MediaProxy, RTPproxy, FreePBX and A2Billing. - Expert in developing Flutter WebRTC Applications. - Expert in developing ReactNative WebRTC Applications. ✅ Mobile Softphone development - Linphone, PJSIP, WebRTC, Any Proprietor SIP SDK integration, Agora Integration, LiveKit Integration, Custom WebRTC Development ✅ VoIP - Freeswitch, Asterisk, FreePBX, FusionPBX, Kamailio, Opensips, ASTPP ✅ React - ReactJS, NextJS, ReactNative, Mobex, Axios, MaterialUI, React-Bootstrap, TailWindCss ✅ NodeJS - NodeJS, NestJS, Middleware, Typescript, Javascript, AWS Deployment, CI/CD Deployment ✅ Mobile Application - Flutter, ReactNative, Android Kotlin, Android, Swift, Objective-C, SwiftUI ✅ HTML, JS, CSS, Bootstrap, Vanila Script, Jquery You can message to discuss your requirements in detail.Kamailio
FreeSWITCHVoIP SoftwareAsteriskXMPPVoIPReact NativeiOSAndroid App DevelopmentiOS DevelopmentMobile App DevelopmentReactWebRTCNode.jsSwift - $50 hourly
- 4.9/5
- (60 jobs)
Telecom Software and Network Engineer more than 11th years in companies - communication providers. Main skills is design and deploying a complete infrastructure of voip provider, using OpenSource telephony technologies such as Freeswitch, Kamailio \ OpenSIPS, asterisk, etc. Mostly I'm dealing with emerging startups or with accomplished voip companies which want to improve\reorganize their infrastructure; create something new or fix some issue on their network. So it is main area but sure I can help with other projects that correspond to my list of skills.Kamailio
VoIP SoftwareVoIP PBXVoIP AdministrationErlangApache CouchDBRabbitMQLuaPostgreSQLMySQLOpenSIPSFreeSWITCHVoIP - $45 hourly
- 5.0/5
- (12 jobs)
I am professional freelancer having more than 10 years of experience in the VoIP industry. I am having wide knowledge of VoIP systems installation,configuration and troubleshooting. I am specialize in asterisk, vicidial, goautodial, freeswitch,elastix,Fusionpbx, Kazoo and freepbx based open sourece telephony platforms. I can configure the most advance solutions ranging from web integration of pbx to the enterprise level of VoIP systems deployment. I can also experienced in Linux based servers including opensuse,Centos and Red hat servers. I can install VPS and troubleshoot the day to day issues in the OpenVZ virtualization environment. My way of doing work is the best indication of customer satisfaction. I have done lot of projects in VoIP based systems.Kamailio
OpenSIPSLinux System AdministrationAsteriskElastixFreeSWITCHVICIDIALVoIP AdministrationWebRTCFreePBXMicrosoft Teams - $80 hourly
- 5.0/5
- (64 jobs)
Experienced Senior Software Developer and Senior System / Database / VoIP Administrator with 10+ years experience in various HighLoad projects (Web, VoIP, WebRTC, Ecommerce, Databases). Experienced Senior Database Administrator, Senior Database Developer with over 10+ years of experience in PostgreSQL. Strong knowledge in designing, coding, testing and profiling PostgreSQL database in the highly loaded environment. Experienced with sharding and High-Availability (HA) techniques based on PL/Proxy, PgBouncer, Pgpool-II, repmgr, Patroni. Strong knowledge on PostgreSQL contribs (hstore, ltree, intarray, dblink, pg_trgm, pgcrypto, etc) and on internals of PostgreSQL itself. Experienced in PostgreSQL profiling tools like pg_stat_statements, pg_stat_kcache, amcheck, amcheck_next, pg_metricus, pg_badger and others. Good experience in PL/pgSQL and ETL scripting and query optimization. For web projects use MEAN stack e.g. Angular and Angular Material as front-end, Golang (mostly go-kit) or Node.js for backend, PostgreSQL or MongoDB as database. For VoIP/WebRTC projects use as Backend Kamailio, OpenSIPS, rtpengine (RTP Proxy, RTP transcoding, SRTP WEBRTC maintaining), RTPProxy (RTP Proxy), FreeSWITCH (Class-5 features), Yate (Class-5 features, SIP-T, SIP-I, ISUP), CGRateS (OCS; AAA; LCR; Fraud Protection; ASR, ACD, ACC, TCC, TCD, PDD Statistics; Billing) and PJSIP, JsSIP, SIP.js, sipML5 library as Client. For administration use Kubernetes, Docker, Nginx, Ansible, Red Hat Enterprise Linux, Oracle Linux, CentOS, Atomic Linux, CoreOS. For Databases use PostgreSQL, Citus, Greenplum, MongoDB. Technology stack: · VOIP SOFTWARE: SIP, H.323, Kamailio, OpenSIPS, OpenSER, rtpengine, RTPProxy, SEMS, FreeSWITCH, Asterisk, Yate, GnuGK, PJSIP, CGRateS, CDRTool, A2Billling, ASTPP, Fastwire OpenCA, Vicidial, Kazoo · VOIP HARDWARE: AudioCodes Mediant 2000, AudioCodes Mediant 3000, Eltex SMG-1016M, Eltex SMG-2016, Cisco AS5350, Cisco AS5350XM · DATABASES: PostgreSQL (Skytools, londiste, pglogical, pgq, streaming replication, logical replication, pg_basebackup, barman, pgbadger, powa, repmgr, PostgreSQL Automatic Failover (PAF), Patroni, Pgpool-II, pgbench, pg_stat_kcache, amcheck, pg_metricus, pg_repack), MongoDB, MySQL, Redis · PROGRAMMING LANGUAGES: Rust, Golang (Go), TypeScript, JavaScript, Python, C/C++, PL/pgSQL, PL/SQL, PL/C, PL/Proxy · FRAMEWORKS: actix, ntex, go-kit, Angular, Angular Material · DEVOPS: Kubernetes (k8s), Docker, Grafana, Prometheus, Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, Linux Operating System (RHEL, CentOS, Oracle Linux), NGINX, HAProxyKamailio
VoIPSession Initiation ProtocolAsteriskDatabase ProgrammingAngular 6CGRateSPostgreSQL ProgrammingVoIP AdministrationFreeSWITCHOpenSIPSVoIP SoftwareGolangPostgreSQL - $60 hourly
- 4.9/5
- (46 jobs)
Having 12 years’ experience in Asterisk/OpenSips/Kamailio based application development. With over 6 plus years’ experience in WebRTC development along with 4 years’ experience in Windows development. Below are highlights of the projects and applications worked on: 1. Worked on all the Asterisk configuration changes, which even includes PJSIP. 2. Asterisk Event module (Which handles the request from NodeJS server and handles the events like play greeting, play MOH, Take input field, record greeting, making call, etc. it covers all the features and functionalities of asterisk) 3. Projects which deal with SIP WebRTC Client both Audio & Video. 4. JSON VOIP Client (Audio & Video). This was developed to overcome the loading of heavy SIP stack in browser or mobile. as a result we develop a simple JSON framework to make calls, with a server in the middle that converts to SIP and pushes calls to the asterisk server. 5. Applications for Video conferencing on WebRTC, which supports Peer to Peer in browsers, Android & iOS systems. 6. Applications for Video on WebRTC with SFU (Janus GateWay) in browser, Android & iOS systems. 7. Windows and Mac-based Video Conference applications. In short, we developed an application that is similar to Zoom Meetings. 8. Technologies used for applications like OpenSips/Kamailio only for Proxy, Registrar, and Load Balancing. 9. Worked on C# wpf WebRTC video conferencing service. 10. Worked on C# wpf PJSIP softphone application along with 11. Worked on electron.js with PJSIP softphone application. 12. Microsoft Teams SBC (Call To Teams) 13. SIP to Whatsapp gateway with freeswitch and lineageos on ubuntu with multiple Virtual machinesKamailio
TableauSession Initiation ProtocolFreeSWITCHAsteriskDesktop ApplicationReact NativeC++AndroidCMicrosoft WindowsSwiftReactFlutterWebRTCC# - $70 hourly
- 4.7/5
- (6 jobs)
NetworkLab, is experts in Linux based Open Source Projects includes firewalls UTM and many others. Fortinet Mikrotik Cisco PFsense EndianUTM Libreswan Strongswan Asterisk (FreePBX, MirtaPBX) Freeswitch (FusionPBX) XMPP (Ejabberd, Prosody) Opensips Kamailio Theforeman Katello Nagios Check-mk Linux VPN infrastructure ( Libreswan, Strongswan) Ovirt Libvirt Archipel We are proven source of professionals in technology industry. Our full-service help build the tools you need for a successful product.Kamailio
FreeSWITCHOpenSIPSVoIP SoftwareRed Hat Enterprise LinuxLinux System AdministrationNetwork AdministrationSystem AdministrationVPNVoIPNetwork EngineeringNetwork Design - $30 hourly
- 4.9/5
- (20 jobs)
Hello, my friends! These are what i have done in this 2019-2021 year. 2021: ☑ Ansible for install opensips + DB + opensips_cli + opensips control panel in one click (centos7\debian10) ☑ Softswitch 4 class based on opensips 3.2 (LCR, Transcoding, Cluster mode) ☑ Opensips - MS TEAMS integration ☑ Bootstrap 4 web interface for opensips projects, ☑ Whole Media Sending system. The system that can send Millions of Faxes\Audio with reports, 2020: ☑ Ansible script for deploy drachtio and simple JS app ☑ Email2Fax gateway ☑ Webrtc client with web frontend based on SIPJS. ☑ Customize ASterisk for License checking. Written on C inside source files. ☑ Blacklisting Kamailio with Front-end. ☑ Webrtc2sip server with Encrypted RTP ☑ Callback + AMD based on FreePBX ☑ Click2call php script for Asterisk based PBXs ☑ Deploy opensips server (with web panel) with 200cps\6000 concurrent calls ☑ Deploy zabbix monitoring system for voip servers ☑ Increase disk space on VM without power off ☑ Moving VMs between ESXI hosts ☑ Colored fax on Hylafax+ ☑ Raspberry Bluetooth Asterisk voip-gsm gateway, ☑ Voip Push Notification iOS, Android ☑ Bluetooth-Asterisk-GSM Gateway, ☑ SIP Load-Balancers Between, ☑ TLS SIP Implementation, ☑ Freepbx Survey module, ☑ Whitelist Kamailio sip server for millions numbers in db, ☑ AGI PAMI scripts convert to make server more faster for wholesale. I am VOIP developer who loves his job. Be free to ask me any questions.Kamailio
WholesaleVoIPVoIP SoftwareAsteriskOpenSIPSVoIP Administration - $60 hourly
- 4.7/5
- (11 jobs)
Are you looking for VoIP Engineer ? You have a voip project using opensource tools , like asterisk , kamailio/OpenSIPS and freeswitch ?You have an SMS project ? You are in the right place . I can help you create you voip and sms system and maintain it , Some of what i can do is : * Setting Your SBC using Kamailio/Opensips . * Registration and multi domain . * Security And suspecious IP BAN * Redundancy * Nat config * Freeswitch config * Freeswitch Database integration * Asterisk siptrunks config ,complex dialpan creation and debugging * Asterisk , agi ,ari * IVR and database interactions using scripts :python , lua ... * Voicemail config * SMS solution using open source tools like : kannel , SIP simple and xmpp/smpp * Backend creation using Python , Flask * Iptables Rules and config and servers hardening And More ....... Please drop a message and let discuss more ThanksKamailio
SMPPVoIP SoftwareVoIP PBXLinuxSMS GatewaySMSFreeSWITCHOpenSIPSLinux System AdministrationVoIPAsteriskPythonC++C - $35 hourly
- 4.5/5
- (100 jobs)
Over 10 years hands-on experience. I have a great knowledge on VoIP Hardware and Applications from open source Asterisk, Freepbx, Thirdlane, A2Billing, Elastix, Trixbox, etc . I have at least 300 IP-PBX server deployments currently and also do provide VoIP termination services. I work as a part-time consultant for a number of VoIP companies in the Russia and R. Moldova. I have a broad knowledge about networking and wireless. this includes routers, firewalls, access points(cisco, mikrotik, ZTE... I am confident that i can deliver any work satisfaction guaranteed through Quality and Effectiveness.Kamailio
VICIDIALTelecommunications EngineeringVoIP SoftwareAsteriskLinux System AdministrationFreePBXVoIP AdministrationElastixNetwork AdministrationMySQL - $85 hourly
- 4.5/5
- (35 jobs)
Hi, my name is Anis BEDHIAFI. I am a Senior VoIP Engineer. I am SSCA® certified My expertise covers most parts of VoIP networks including SIP devices and endpoints to IPBX systems, Call Centers, SBCs and more. I work on Cisco, Broadsoft and Oracle products. - Cisco/BraodSoft - Acme Packet/ Oracle Enterprise Session Border Controller - Oracle Session Delivery Manager SDM In the open source world, I work on: - Kamailio - OpenSIPS - Freeswitch - FusionPBX - ASTPP - Homer - Linux (Debian, Ubuntu & CentOS) - Webrtc My Skills: VoIP, SIP, FreeSWITCH, FusionPBX, ASTPP, Kamailio, Asterisk, FreePBX, PyFreeBilling, Elastix, WebRTC, SIP trunking, fail2ban, IPBX, Debian, Ubuntu, CentOS, Amazon AWS EC2, Windows Azure, Python, PHP, Lua, MySQL, PostgreSQLKamailio
VoIP PBXLinuxPBXDebianVoIP AdministrationAPIAsteriskFreeSWITCHSession Initiation ProtocolOpenSIPSAmazon EC2VoIP SoftwareLaravelWebRTC - $60 hourly
- 4.6/5
- (18 jobs)
I have a 20 years of experience in IT and Telecommunications. I have heavy experience in open source software exploitation: - Unix-way (shell scripting, vim, sed, find and daemons...) - OSI model (TCP/IP, Ethernet and others) - telecom hadware - VoIP - many other... ...and development: - C - perl - Lua - JS - Golang - C++ - Python ...and more and more and more Some very special (but interesting) skills: - IMS core - GRPS Tunneling Protocol (GTP) - SIP, DIAMETER, etc. I'm not interesting in work with fixed price less than $200, sorryKamailio
VoIP AdministrationSession Initiation ProtocolVoIP SoftwareFreeSWITCHTelecommunications EngineeringLuaLinux System AdministrationVoIPGolangCPythonC++ - $55 hourly
- 4.1/5
- (58 jobs)
I have 18+ years expereince in VoIP/SMS setups using IVRs, asterisk , Freeswitch, MS Teams and Opensips/Kamailio and VoIP | Freeswitch | Opensips | Contact Centers| Conversational AI| Amazon Connect|MS TeamsKamailio
Session Initiation ProtocolCentOSLinuxFreeSWITCHCustomer Relationship ManagementA2BillingAsteriskMySQLWebRTCAndroid - $50 hourly
- 4.8/5
- (135 jobs)
## BIO Over 25 years of experience in IT. Over 20 years experience as Systems/Network Administrator for Internet Service Providers. Designed and implemented networks, including WANs, LANs utilizing wired and wireless technologies. Provided server administration for production SaaS website and eCommerce sites, including PCI DSS security compliance. ## Area of Expertise Operating Systems: Linux, FreeBSD, OpenBSD, RedHat, CentOS, Debian, Ubuntu, OpenSuSE, Windows Server (2000-2008). Routers: Mikrotik, Linux, low-end Cisco, SoHo routers. Networking: wireless, wired, LAN, WAN, switches, cabling. Server Software: Apache, Sendmail, postfix, DNS, bind, dovecot, courier, email, mail server, pop3, IMAP, WordPress, Joomla, bash, shell scripting.Kamailio
CloudflareMySQLPostfix SMTP ServerSMTPLinux System AdministrationApache AdministrationFreeBSDOpenBSDComputer NetworkDNSNetwork MonitoringNetwork Design - $25 hourly
- 4.6/5
- (144 jobs)
🥇 Rewarded as 🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 𝗣𝗟𝗨𝗦 🏆 by Upwork (𝗧𝗼𝗽 𝟯%) 🕐 4700+ hours and still counting ✅ 200+ jobs completed successfully ✅ 100% Job Success (Client Satisfaction Ratio) ✅ 90% of Clients Recommended to work with me ✅ 86% Long-term Repeat Clients ✅ 15+ Years Of Experience ✅ High-Quality Work ✅ Cost-Effective ✅ Fluent English Verified Digital Transformation Solutions & Enterprise Software Development Professional (Web app & Mobile Apps, IoT, Cloud, DevOps, DataOps, Robotic Process Automation, and Enterprise Mobility) With more than 2 decades of experience in the technology domain, I have been able to help companies by consulting and developing the right solutions that have proved to be a game-changer for them in highly competitive markets. I have nurtured many enterprises and introduced newer avenues for them through innovative digital transformation solutions. As the CEO of Solution Analysts - An ISO 9001:2015 certified company, I have been instrumental in: ✦ Developing 1100+ custom digital transformation solutions like apps, websites, software, tech solutions, etc. ✦ Catered to more than 700+ global clientele like CISCO, TOTAL CARE, INTEL, ITU, etc ✦ Personally mentored and trained more than 400+ IT professionals that are galvanized to deliver high-quality results ✦ 98% client retention ratio, 98% client satisfaction ✦ 35+ technologies that I can work on ✦ 20+ years of experience in building tech solutions ✦ 1M+ total billed hours till date ✦ Strictly following an agile process methodology ✦ Strict Standards of code quality ✦✦Technical Skills✦✦ ✦Mobile App Development✦ iOS, Android, Windows Cross Platform: Flutter, React Native AR/VR, Agora Chat, Bluetooth Low Energy (BLE), iBeacon, NFC, credit card reader ✦Web App Development✦ NodeJS, Angular, React, VueJS, GoLang, PHP 7, MIDI - Chat, and Messaging Engine: XMPP, Jabber, OpenFire, OpenTok WebRTC, Ejabberd ✦IoT: MQTT✦ CoAp, HTTP, WebSocket, Wifi, Bluetooth, AWS Greengrass, Raspberry Pi, Arduino, ErLang Device, Driver Development, Peripheral Driver Development, Micro-controller programming, Embedded Ai, Python, C++ ✦Infrastructure✦ AWS Cloud, Hybrid Cloud, CI/CD, DevOps, Security, DevSecOps, Network Testing, Web Application Security Testing, Cloud Managed Services, Data Migrations, Infrastructure Migration, DR implementation, Docker, Kubernetes, Service Mesh, AWS EKS, ECS, Fargate ✦Application Architecture✦ Microservices, Event-Driven, MVC ✦Data Analytics✦ ETL Tools, Python, Data warehouse, Data ake, DataOps, Apache Airflow, AWS EMR, Hadoop, Time Series databases, Power BI, Tableau, Presto, Apache Spark, Pandas, Pytorch, PyETL, Apache Nifi, Kafka, Fink, TICK Stack, AWS Kinesis Streams, Data Governance, Data Mesh ✦Data Science✦ Machine Learning (ML), Artificial intelligence (Ai), Deep Learning, NLP, Image Detection, Object Detection, OCR, Data Analysis, Python, Pandas, Video Analytics, AiOps, and MLOps ✦Databases✦ PostgreSQL, MySQL, MongoDB, Hbase, InfluxDB, AWS Redshift, AWS DynamoDB, and ELK Stack ✦Source Code Repositories✦ GitLab, GitHub, Bitbucket, SVN ✦API development✦ XML, JASON, REST/SOAP, GraphQL ✦Other Tools✦ Firebase, Twilio, Plivo ✦Video/audio/image processing✦ OpenCV, Tensor Flow, GPU Image, CoreAudio, EZAudio, Pitch Control, Bass, AVFoundation – VOIP. ✦Cloud Communication✦ Alexa, Google Assistant, Twillio, Heroku, Tokbox, Speech recognition, text-to-speech, Siri, OpenEar ✦Project Management Tools✦ JIRA, Asana, Zoho Sprints, BaseCamp, Huddle, Sprint.ly If you are looking for a partner to help you achieve your business goals, then look nowhere else. I am confident that I can help you by working as an extension of your team and delivering on results.Kamailio
.NET FrameworkASP.NET MVCASP.NET CoreSaaS DevelopmentERP SoftwareCRM SoftwareJavaScriptReactTypeScriptNode.jsKotlinSwiftDartFlutterReact Native - $60 hourly
- 4.8/5
- (32 jobs)
With over a decade of experience behind me, I am a seasoned software backend developer - including having been part of the Arcadia Group and Payfluent. I architect and build applications mostly on the back-end: web stacks, data pipelines, and microservices. I have experience in PHP, Python, Django, and Node. Recently, I picked up strong languages and frameworks such as C# and .NET in combination with C++. My expertise also includes automation, migrations, architecture, and deployments. I'm detail-oriented with excellent communication skills, focused on meeting the client's requirements and delivering clean and efficient software solutions both as an individual developer and as a member of a team. I am passionate about building out ideas, especially when they empower others to improve their quality of life.Kamailio
DjangoNode.jsPythonGolangErlangC# Want to browse more freelancers?
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