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Check out Freeswitch specialists with the skills you need for your next job.
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  4. (Current) Freeswitch Specialists
  • $95 hourly

    • 5.0/5
    • (6 jobs)
    16 years of building/maintaining/upgrading/securing/configuring computers 16 years of RedHat/CentOS/Debian Linux programming/administration 16 years of Microsoft Windows XP/NT/2k/2k3 workstation/server experience 16 years of TCP/IP Routing/NAT/Firewall using Cisco/Checkpoint/Linux/BSD 16 years of VoIP H.323/SIP/IAX with Asterisk/Kamailio/Freeswitch/Cisco 16 years of HTML/JS/CSS/PHP/PERL/BASH web-application development 9 Years of VMWare/ESXi/LXC/iSCSI/SAS virtualization/storage management 6 years of Audio/Video streaming using Flash/VideoLAN/Red5/Quicktime/HTML5 4 years of Docker/Kubernetes/Ansible/Terraform application development/deployment 4 years of Apple iOS/Android/Unity/Blender3D game/application development 3 years of HTML5/Full Stack Javascript/WebRTC testing/development
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Amazon ECS
    Amazon EC2
    VoIP Software
    Session Initiation Protocol
    AWS CloudFront
    Docker
    Kamailio
    AngularJS
    JavaScript
    NGINX
    FreeSWITCH
    Asterisk
  • $65 hourly

    • 4.8/5
    • (330 jobs)
    For the past few years, I have been employed as a VoIP engineer and have aided numerous businesses with their customer acquisition, customer support, and overall communication through my services, including system design, setup, customisation, and maintenance. Communication is an essential element in any business, and my expertise can assist in constructing a dependable communication tool for your company. My primary areas of expertise are: - FreeSWITCH - Kamailio, OpenSIPS - Programming languages such as Python, Lua, PHP - Database management using PostgreSQL and MySQL - Server administration, Docker, and AWS. Thank you, Mohammad Kamruzzaman
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Fax
    Node.js
    OpenSIPS
    VoIP Software
    VoIP PBX
    Flutter
    VoIP
    VoIP Administration
    FreeSWITCH
    Django
    Business with 1-9 Employees
    MySQL
    Laravel
    MongoDB
    Python
  • $45 hourly

    • 4.9/5
    • (274 jobs)
    Hello everyone, I am Martin. I will do my best satisfy my clients to the fullest. I have worked as professional software developer for about 20 years and have good experience in: -Asterisk, FreePBX -FreeSwitch, FusionPBX -Kamailio, OpenSIPs -WebRTC -PHP, MySQL -c/c++ -JavaScript, Node.js, HTML5/CSS -Linux System Administration, Networking -git, SVN 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.
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    VoIP
    Kamailio
    Session Initiation Protocol
    Vue.js
    PHP
    TypeScript
    JavaScript
    FreeSWITCH
    Node.js
    MySQL Programming
    Asterisk
    FreePBX
  • $70 hourly

    • 5.0/5
    • (170 jobs)
    I am consistent "Top Rated Plus" VoIP Developer on Upwork with numerous 5 star reviews including excessively positive feedback. 12+ 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."
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    MySQL
    OpenSIPS
    FreeSWITCH
    Yii
    PHP
    Kamailio
    Yii2
    API
    VoIP Software
    Asterisk
    MariaDB
    Session Initiation Protocol
    Linux System Administration
    Database Administration
    VoIP Administration
    VoIP
  • $35 hourly

    • 5.0/5
    • (37 jobs)
    1) Free PBX Expert (Installation, Development, Configuration, Technical Support). 2) Fusion PBX Expert (Installation, Development, Configuration, Technical Support) 3) Asterisk Expert (Installation, Development, Configuration, Technical Support). 4) Vicidial Expert (Installation, Development, Configuration, Technical Support). 5) Go Auto Dial Expert (Installation, Development, Configuration, Technical Support). 6) Fop2 Expert (Installation, Development, Configuration, Technical Support). 7) VOIP Expert. 8) IVRS (Design, Development, Configuration, Technical Support). 9) Linux, Mysql Database Expert. 10) Lua Expert. 11) PHP, Mysql, Perl expertise. 12) Rabbit MQ, Redis, Ha proxy Expertise. 13) Freeswitch (Development, Support, Installation) 14) AI / Voice Bot Expert using unimrcp. Projects Handel: 1) IPPBX. 2) Contact Center Solution. 3) SoftSwitch. 4) Autodialer/ Voice Broad Casting System/ Call Back System/Calling Card System. 5) IVRS/Voice Mail /Conference Solution. 6) Voice & SMS Broadcasting System. 7) VOIP Billing Solution. 8) PRI / ISDN/ GSM gateway Integration expert. 10) Solution Design Expert. 11) Architecture Expert. 12) Cloud / On-premises PBX/ contact center / Soft switch Deployment expert.
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Linux System Administration
    MySQL
    VICIDIAL
    PHP
    OpenSIPS
    Session Initiation Protocol
    FreePBX
    VoIP Administration
    FreeSWITCH
    Asterisk
  • $60 hourly

    • 4.9/5
    • (40 jobs)
    Having 10 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)
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    C
    Tableau
    React Native
    React
    Flutter
    WebRTC
    Session Initiation Protocol
    FreeSWITCH
    Asterisk
    Swift
    Android
    C#
    C++
    Microsoft Windows
    Desktop Application
  • $70 hourly

    • 5.0/5
    • (23 jobs)
    I am highly skilled telecom engineer and expert, who not only see the big picture, but can design and implement it, with excellent analytical and problem-solving skills, solid experience in service development, design of distributed systems, high availability database designs, data conversion, migration and integration of databases. Expertise knowledge in data mining, ingestion, consumption, disaster recovery and core analytics solutions. Extensive hands-on experience in Big Data migration projects, Data Analytics, Data Modeling and ETL. I have a huge experience(over 15 years) in running technical teams from software developers, system and network administrators, and can be able to quickly evaluate project needs and provide appropriate solutions in a timely manner. My expertise: Operating Systems Linux, Unix (*BSD, Solaris, HP-UNIX), Windows, Cisco IOS, Mac OS, Android Telecom Cisco, Asterisk, Kamailio, SIP, VoIP, Biiling, IVR, Conferences Virtualization and Containers VmWare, KVM, Vbox, Docker, LXC Protocols VoIP (H323, SIP,MGCP, RTMPx), PSTN(ISDN, SS7, ITP, MAP), SNMP, SSH, DNS, POP3, IMAP, SMTP, FTP, HTTP, NFS, SSL, DHCP, BGP, OSPF, RIP Programing Languages JAVA (SE, EE, JDBC, JPA, JPQL, JSF, JSP, Servlets, Spring), PHP(3, 5, 7), JavaScript (jQuery, Vue), SQL(PLSQL, PGSQL), C / C++, Html, SSML, VXML, TCL-IVR, CSS CI/CD Ansible, JenkinsX Architectures REST, SOAP, WSDL, RPC, Microservices, Pub/Sub, Data transformation DB and MB PostgreSQL, MySQL, Oracle, Mongo, InfluxDB, Redis, RabbitMQ, Kafka ETL Apache NiFi Application Servers Apache, Sun GlassFish, Jetty Version control GIT, SVN, CVS Development environments Eclipse, IntelliJ IDEA, Android Studio, Atom The most intrested projects: Cloud Call Center Software for SaaS Data transformation system (ETL) Cloud PBX, IVR, Queue Software for SaaS Cloud invoice and billing system for SaaS Webrtc2SIP gateway for SaaS Similar service like Viber and Skype A.I. Dialer (pre-dictive, power, agentless, preview) Call routing and billing system Network and service monitoring system Telenor Bulgaria fix network VoLTE Conferencing system Realtime call transcription MCU Conferencing system
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Session Initiation Protocol
    Amazon Web Services
    SMS Gateway
    WebRTC
    VoIP
    OpenSIPS
    FreeSWITCH
    Software Design
    Telecommunications Engineering
    JavaScript
    PHP
    VoIP Administration
    Asterisk
    Kamailio
    Java
  • $30 hourly

    • 4.4/5
    • (103 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, Apache 
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Video Stream
    Streaming Platform
    Asterisk
    FreeSWITCH
    Kamailio
    VoIP Software
    Web Development
    React
    Android App Development
    iOS Development
    Flutter
    Android
    React Native
    PHP
    Node.js
    WebRTC
  • $75 hourly

    • 4.8/5
    • (75 jobs)
    I have been working with PHP, Node js, MySQL, Mongo db and cloud telephony technologies like Asterisk, PBX, Freeswitch, Kamailio, Twilio and Plivo for the past few years and have great experience with them. I also have experience in Web and mobile Development, expert in Angular js and React js. I am ready to be hired and start working on your projects today.
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Database Administration
    Kamailio
    Asterisk
    Twilio API
    VoIP
    JavaScript
    FreePBX
    Session Initiation Protocol
    TypeScript
    Node.js
    API
    VoIP Administration
    FreeSWITCH
    VoIP Software
    WebRTC
  • $30 hourly

    • 5.0/5
    • (9 jobs)
    Web Developer, PHP, JS, Erlang, Postgresql, Linux, Voip, Windows, Server Administratio, Network administration , Freeswitch, Asterisk, SIP, Postgres, Database.
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Database Administration
    PostgreSQL
    Computer Network
    VoIP Administration
    Laravel
    Linux System Administration
    Erlang
    FreeSWITCH
    PHP
    Python
    JavaScript
    VoIP
    Linux
    Bash
  • $70 hourly

    • 5.0/5
    • (9 jobs)
    23+ years experience in Planning, Designing, Development, Deployment & Management of Carrier grade, fault tolerant converged Media Solutions. Successfully completed UC Voice/Video conferencing solutions development for multiple companies. On hands with Open-Source & Proprietary VoIP switches and billings (Including but not limited to Voice-Master, MVTS, iTel, AVP, GnuGK, Asterisk, FreeSWITCH, OpenSIPS, Kamalio, Call-Weaver and YATE etc.) and also developed custom solutions from scratch.
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Web Development
    VoIP Administration
    Linux System Administration
    Kamailio
    FreeSWITCH
    Asterisk
    Mobile App Development
    Call Center Management
    CallTools Call Center Software
    VoIP Software
  • $45 hourly

    • 5.0/5
    • (11 jobs)
    I am professional freelancer having more than 8 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.
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    OpenSIPS
    Linux System Administration
    Kamailio
    Asterisk
    Elastix
    FreeSWITCH
    VICIDIAL
    VoIP Administration
    WebRTC
    FreePBX
    Microsoft Teams
  • $30 hourly

    • 4.9/5
    • (20 jobs)
    I have extensive experience in custom VoIP applications developments with the help of Opensource Technologies such as Asterisk, Freeswitch, Vicidial, Kamailio, OpenSIPS, WebRTC, FreePBX, FusionPBX, and PHP (Front End). I have worked on several VoIP projects that includes Conferencing Solution, PBX Solution, Softswitch, Vicidial & Goautodial installations and set up. My core focus is to always understand the customers' requirements in detail and advise them out to provide out of box solutions which helps them to save much valuable Time and Money. VoIP Solutions : Conference Solution Contact Centre Solution IP PBX/Hosted PBX Single & Multi-Tenant IVR Class 4 & Class 5 Softswitch Appointment System Broadcasting – Call & Message WebPhone- Click2Call Phone Verification System FoIP – Fax Over IP DID Routing SBC VoIP Services: Asterisk Freeswitch WebRTC OpenSIPS Kamailio FreePBX FusionPBX Elastix ViciDial/Goautodial A2Billing ASTPP PHP I am very flexible with timings and available to work round the clock based on customers' need.
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    FreePBX
    OpenSIPS
    VICIDIAL
    VoIP
    Asterisk
    Kamailio
    Lua
    VoIP Software
    Web Development
    FreeSWITCH
    VoIP Administration
    WebRTC
    Mobile App Development
    PHP
    JavaScript
  • $35 hourly

    • 5.0/5
    • (46 jobs)
    Over the last 5 years, I have developed a wide range of VOIP projects. Just a brief introduction of things I have worked on. [Opensips/Kamailio] 1. Developed local and International VoIP network (Termination/Origination) with, along redis as cache database and FreeRadius as AAA Sever. 2. Registrar in Type 5 switch with freeswitch as media server. 3. Opensips-CP/SIREMIS. 4. Symmetric Nat solutions with rtpengine/rtpproxy. [Freeswitch] 1. AutoDialer Supporting more that 5000 CC calls using Multiple freeswitch with Golang as ESL. 2. Voip network setup using mod_enum,mod_lcr,mod_nibblebill. 3. Freeswitch realtime implementation using lua/mod_xml_curl [FreeRadius] 1. AAA server and Proxy for other freeradius servers. [Asterisk] 1. Asterisk realtime implementation. 2. AGI/AMI scripts.. 3. Autodialer using pycall. 5. Cisco phones configuration and troubleshooting. [Free-Dialers] 1. Newfies Dialer 2. IctDialer 3. ViciDialer [Zabbix / Monit] 1. Monitorig of different Servers 2. Setting triggers for different services 3. Generating e-mail notifications on triggers 4. Taking required actions to tackle the triggers [Languages] 1. Lua 2. Golang 3. Python
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Android
    iOS Development
    WebRTC
    Session Initiation Protocol
    System Administration
    Golang
    Asterisk
    OpenSIPS
    Kamailio
    FreeSWITCH
  • $100 hourly

    • 4.5/5
    • (23 jobs)
    Full-Time Googler Part-time Freelancer I am a telephony guru, but also have a strong focus in Network Engineering, Software Integrations, Backend Development, Network Security, Linux Administration, as well as a minor focus in Software Development and Scripting (Bash, Shell, Python, C, Go, JavaScript) I love tinkering and I use Upwork as a means of continued growth and I love the new challenges it presents, and I enjoy working with my clients to ensure they can get the best service on the market at a price point that can ensure long and beneficial relationships for both them and I. I look forward to hearing from you!
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    VoIP PBX
    FreeSWITCH
    Linux System Administration
    FreePBX
    VoIP Software
    Asterisk
    Provisioning
    Session Initiation Protocol
    VoIP
    VoIP Administration
    VPN
    Ubiquiti
    Linux
    Network Access Control
    Network Administration
  • $150 hourly

    • 4.9/5
    • (50 jobs)
    Feedback: 💭 "Roman has a vast knowledge of what he is doing and really good at what should be done" 💭 "He has good social skills; is patient and a good communicator. His skills are very much in demand" 💭 "If some solution does not work or is not possible Roman will find another way to get the task done" 💭 "His research is solid, resulting in a good overview of possibilities to (re-)direct the project" Expertise: Streaming & Multimedia: 📺 Media applications (ffmpeg, gstreamer, opencv) 🎛 Media services (kurento, mediasoup, janus, wowza) 📹 Streaming protocols (webrtc, hls, dash, rtmp, rtsp) 🧩 Codecs and Muxers (h.264/avc, h.265/hevc, av1, vp9) 📐️ GPU programming (opengl, opencl, cuda, vulkan, hip) 📠 IP Telephony (asterisk, freeswitch, sip, voip) DevOps & Cloud & IoT: ☁️ Cloud Infrastructure (aws, ansible, terraform, kubernetes) ⛓ Build and test automation (jenkins, gitlab, ci/cd pipelines) 🔗 Tunneling protocols (openvpn, wireguard, gre, ipsec) 🧶 Bulk networking (dpdk, bpf/ebpf, xdp) 📦 Virtualization (kvm, qemu, crosvm, virtio) 🔋️ IoT / Embedded (raspberry pi, jetson, nordic, ble) 💻️ Linux deployment (containers, docker, yocto) Software development: 🐍️ Python (flask, asyncio, fastapi, websockets) 🍀️ C/C++ (qt, cmake, meson, kernel, ndk, maths) ⚙ Rust (cargo, actix, tokio, rayon, solana) 🛠 Reverse engineering (disassembling, protocols)
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    WebRTC
    Kernel
    FFmpeg
    Docker
    CUDA
    Video Processing
    Internet of Things
    GStreamer
    Rust
    Amazon Web Services
    DevOps
    Python
    C++
    Embedded Linux
    C
  • $25 hourly

    • 4.8/5
    • (95 jobs)
    - I have 8 years experience in system admin, deploy server, maintenance system base on: asterisk, voip, avaya, freeswitch, kamailio, opensip..... - Developed many VOIP solutions, system for customer over the world as: voicemail system, conference systems, IVR systems, calling card system. - Django developer: Develop e-commercial sites, CMS sites, API systems and more - AngularJS developer, one page applications. - etc.
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    SQL Programming
    SQL
    SOAP
    Python
    PostgreSQL Programming
    Perl
    phpBB
    PHP
    Node.js
    NoSQL Database
    MySQL Programming
    Linux System Administration
    JSON
    HTML5
    HTML
  • $40 hourly

    • 5.0/5
    • (20 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 detection
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    FreePBX
    Automatic Speech Recognition
    Kamailio
    Linux System Administration
    WebRTC
    Project Management
    Bash
    VoIP Administration
    Asterisk
    Perl
    PHP
    Python
    MySQL
  • $50 hourly

    • 5.0/5
    • (17 jobs)
    I have more than 14 years of experience in open sources telephony projects such as asterisk PBX and FreeSWITCH also I am part of a team developed following open-source communications projects. - ICTCore - ICTFax - ICTBroadcast - ICTContact - ICTCRM I provide you Asterisk, Freeswitch, Linux, Telephone Integration, Call-Center Software, Auto & Predictive dialer, and web-based WebRTC services. GIVE ME ONE CHANCE TO AMAZE YOU WITH the QUALITY. I provide high-quality designs with revisions, which guarantees your satisfaction to 100% Best Regards Kashif Majeed
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Web Development
    Kamailio
    VoIP Software
    FreeSWITCH
    MySQL
    Payment Gateway Integration
    Linux System Administration
    PHP
    Plivo
    WordPress
    Asterisk
    VoIP
    Software Development
    IVR Software
    API Integration
    Vtiger
  • $30 hourly

    • 3.6/5
    • (6 jobs)
    📌 📌 AWS Solutions Architect | Automation Enthusiastic | Kubernetes | Asterisk | Freeswitch | Freepbx| 3CX | FusionPBX | VOIP| Security Riajul is a Cloud Infrastructure Architect, Cloud Engineering Consultant with in-depth expertise in architecting, implementing, and integrating a wide range of Cloud and DevOps technologies including AWS, GCP, and Kubernetes with a proven ability to lead and motivate project teams in client-facing roles. He is an Cloud enthusiast, bringing with him 8 years hands-on experience in supporting, automating and Optimizing critical depl oyment in AWS Cloud Leveraging configuration management, CI/CD and DevOps Processes. A technologist, focused in strategic thought leadership concentrated around Cloud, DevOps, Automation, Hybrid Cloud and Cloud migration. He has provided expert consultation in cloud strategy, solution design and DevOps. A critical thinker, a life-long learner and surprisingly fast at picking up new concepts. Riajul possess a solid understanding of the technologies required from development to deployment. He is an avid learner and a voracious reader as well. 📌CORE COMPETENCIES System Design | System Support | Solution Design | Infrastructure Automation | DevOps | Cloud Migration | Incident Management - Design, Deployment & Manage Micro-services Based applications deployed on Kubernetes Clusters and Cloud Kubernetes Services. - Automate the delivery process. Implement Kubernetes for orchestration. Deploy Cloud Infra automated using Terraform with the integration of Cloud DevOps Pipelines. - Significant effort in Linux administration as well as code compilation, Implement CI/CD pipelines to aging, building, debugging, automating, managing, adjusting, and deploying across many environments. - Has keen interest in improving software delivery processes to make them work for developers with a solid hands-on experience in Cloud DevOps. Also has extensive experience in building and provisioning Cloud infrastructure as code using Cloud Platform Templates, Terraform, Cloud API. - Implement various health dashboards and workbooks in cloud for proactive monitoring of deployed services and infrastructure 📌TECHNICAL SKILLS- - Operating Systems: Linux( Debian, CentOS, Ubuntu,RHEL, Fedora, Kali, others ) - Cloud Services: Amazon, Azure, GCP, Digital Ocean, Linode - Monitoring System: Prometheus, Nagios, Zabbix, Monit, Cacti. - AWS: Amazon Web Services (AWS), AWS Lambda · AWS CloudFormation, Amazon EKS, - Kubernetes: Cluster Architecture, Docker, Containers, Helm Chart, Configuration, Security - Orchestration tool: Kubernetes, Docker Swarm - High availability solutions: Load balancing, Auto Scaling, Clustering, MySQL Replication. - Web server : Apache, Nginx. LightHTTPD - Security : IPTABLES, UFW, CSF/LFD, APF, CXS , Mod Security, rkhunter, Windows Firewall - Mail server : Sendmail, Exim, Postfix - XMPP/MQTT Server: OpenFire, eJabberd, Prosody - Database servers : MySQL , Parcona MySQL, MariaDB, PostgreSQL, SQLite3 - Web hosting Control panels: WHM/cPanel, Webmin/Virtualmin, VestaCP, Ajenti, ISPconfig, DirectAdmin - Virtualization: Proxmox, KVM, VmWare - Monitoring : Nagios, Grafana, Zabbix, Prometheus - Volume Management : RAID, LVM - VPN : OpenVPN, IPsec - Storage: RAID, ZFS, LVM, GlusterFS, EFS, Object, NFS, CIFS, ISCSI LUN - CI/CD tooling: GitHub Actions, Jenkins, GitLab - Languages: Python, C#
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Website Migration
    Plesk
    VoIP
    FreeSWITCH
    WordPress
    Amazon EC2
    DevOps
    System Monitoring
    Ubuntu
    System Maintenance
    System Administration
    Linux
    Google Cloud Platform
  • $20 hourly

    • 4.7/5
    • (19 jobs)
    Hi Guest, First of all, thanks for visiting our profile. I am doing freelancing since 2010 and my expertise on complete VoIP solution including Freeswitch, Asterisk, PJSip, Opensips and Kamailio. I just recently launched a company which is not offering only VoIP solution but Zeus in Web Development(PHP, WordPress etc), Mobile App Development(Android & iOS). We are a team of members having extensive knowledge of all the services we are offering. We have successfully completed many projects delivered competent results with 100% accuracy with lifetime free support. To keep in mind 100% availability, Our dedicated manager is always online to make sure our client will face no more difficult to ask any query at any time. Let me mentioned the technologies which are our core strength listed below: Core PHP (All Frameworks) CMS(Wordpress, Joomla, Magento) VoIP(Opensource Billing software, Asterisk, Freeswitch, Kamailio, Opensips) Mobile App Development(Android, iOS specially Mobile Sip Dialer) Graphics Design Digital Marketing(SEO, SMM, SMO and PPC) Our price is very reasonable which allows us to work with us. Please share your requirement today only with us to check our capabilities to take your experience on the next level. To name a few tools & technologies that I have worked on: • High-level languages: C++, Objective C, Java, Python, PHP • IDEs: Xcode, Android Studio, Eclipse • Version Control & CI: SVN, Git, Perforce, Bitbucket, Jenkins • DBMS: MS SQL, MySQL, Oracle, PostgreSQL, MongoDB • Frameworks: Django, Zend, Magento, Django REST • Management tools: VersionOne, Jira, Trac, MS Project, MS Visio, XMind, Bugzilla, Balsamiq • Amazon Web Services (AWS) - EC2, S3, SQS, SNS, RDS, CloudTrail, Cloudfront
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    WebRTC
    iOS
    Android App Development
    AWS OpsWorks
    VoIP Software
    iOS Development
    FreePBX
    AMP Framework
    VoIP
    Session Initiation Protocol
    Asterisk
    VoIP Administration
    FreeSWITCH
    WordPress
    PHP
  • $40 hourly

    • 5.0/5
    • (22 jobs)
    🚀 Boost Your Projects with a Top-Rated AWS Engineer and ✨ Achieve 100% Success and Unleash the Full Potential of AWS for Your Project! Are you searching for an experienced AWS Cloud Engineer who can help you set up, design, develop, integrate, and manage cloud-based solutions that not only meet but exceed your expectations? Look no further, your journey to cloud excellence starts here! I have worked on numerous projects, both small and enterprise-level, ranging from AWS infrastructure setup to comprehensive development and seamless integration. My development skills encompass the creation of highly scalable software applications using cutting-edge tools and technologies. One of my key strengths lies in creating robust CI/CD pipelines using Amazon CodePipeline, Bitbucket, and GitHub. These pipelines facilitate the deployment of applications on various AWS services, including Amazon Elastic Container Service (ECS), Elastic Kubernetes Service (EKS), Fargate, and EC2. MY CORE COMPETENCIES ---------------------------------- ✅ AWS SERVICES -- Amazon Connect, Lambda, Kinesis Stream, S3, Lex, DynamoDb, AWS PostgreSQL, Athena, API Gateway, IAM, EFS, ElastiCache, Elastic Beanstalk, Rekognition, AWS Environment. ✅ DEVELOPMENT -- Angular, Nodejs, Python, Java, Springboot, TypeScript, JavaScript, PHP, PrimeNG, Material, REST API, Front End, Back End, Databases. ✅ DevOps -- AWS ECS, AWS EC2, AWS CloudFormation, AWS CodePipeline, CI/CD, Terraform, GitHub, Bitbucket, Thank you, I look forward to working with you. Your Success Is My Goal
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Salesforce App Development
    MEAN Stack
    Amazon EC2
    AWS CloudFormation
    Angular
    VICIDIAL
    RESTful API
    Amazon DynamoDB
    AWS Lambda
    AWS Application
    Amazon Lex
    FreeSWITCH
    Amazon Web Services
    Node.js
    CI/CD
  • $50 hourly

    • 4.8/5
    • (15 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 :)
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Bot Development
    C++
    React Native
    OpenSIPS
    Node.js
    FreeSWITCH
    Swift
    Kotlin
    Video Stream
    Kamailio
    WebRTC
    Dialogflow
    Session Initiation Protocol
    VoIP
    Artificial Intelligence
  • $85 hourly

    • 4.5/5
    • (34 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, PostgreSQL
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    VoIP PBX
    Linux
    PBX
    Debian
    VoIP Administration
    API
    Asterisk
    FreeSWITCH
    Session Initiation Protocol
    OpenSIPS
    Laravel
    Amazon EC2
    VoIP Software
    Kamailio
    WebRTC
  • $79 hourly

    • 4.3/5
    • (316 jobs)
    Hello, Everyone. Diligent Information Technology Specialist with thorough hands-on experience in conceptualising, overseeing, and executing revenue-generating projects of different complexity and intensity. Determined to bring high standards, transparency in client engagement and full commitment to each assignment and I am excited to collaborate with the brightest minds in the industry. More than 2500 of hours @Upwork Over 10 years proven track record of success in cross-continental project management Skills: * Systems administration: Linux (RedHat, Debian, Ubuntu), FreeBSD, Windows * Network administration: VLAN, VPN, Wireless networks, Network equipment management (HP, Cisco, Huawei, Juniper), Deep understanding of network architecture * Wireless: Aruba (WLC, Clearpass) , Fortinet, Aerohive, Cisco (WLC) and Meraki * Routing technologies: BGP, OSPF, EIGRP, IS-IS, RIP, Static routing * High availability: active-passive clusters (HSRP, VRRP, JRRP), load-balancing techniques * Security: firewalling (ASA, FWSM, Fortigate, Juniper including SSG, SonicWall,pfSense), antivirus techniques, antispam techniques, PKI, IDS/IPS, RADIUS (Windows / FreeRadius based) * Voice and Videoconference: Polycom, Skype, Cisco (VCS, CCM, CUCM, Unity, IMP), Nortel, Asterix type (TrixBox, Elastix, etc.) * Network Management Systems: CIsco Prime, Cacti, PRTG, Zabbix, NAGIOS
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Security Assessment & Testing
    Microsoft Office
    Cisco
    AWS Systems Manager
    Database Administration
    Firewall
    Azure
    Cloud Architecture
    VoIP
    Network Administration
    Network Penetration Testing
    Fortinet
    Network Security
    Network Design
    Cisco Certified Network Professional
  • $40 hourly

    • 4.9/5
    • (130 jobs)
    With more than 14 years of experience, I specialize in creating new and improving existing applications using the latest technologies. I am an active contributor for multiple open source projects ranging from Operating systems, Applications, and security. I have been a leader in the IT industry in diversified applications, services, and technologies spread across the spectrum on varied platforms. During my experience, I have built many mobile apps and web solutions and successfully published them to the app store or play store and are highly ranked also. I’m a professional, detail-oriented, and result-driven developer with a proven track record of high-quality work and services dedicated to my client. I provide 24/7 services with my deep and rich knowledge and experience in software engineering, high-quality stacks, and strong leadership skills. I’m seeking to well-versed in structuring, developing, and implementing interactive mobile and web solutions, assisting clients in all troubleshooting endeavors. My prompt response, clear communication, fast delivery, and High-quality work always guarantee 100% client satisfaction and Job success. Key Skills:- * End-to-End encryption/XMPP/Erlang / Ejabberd / MongooseIM * WebRTC based secure call integration * Specialised in Node JS based web applications * Resourced on React JS based front end * Experienced in Objective-C/Swift for iOS app * Experienced in Java/Kotlin for Android App * Experienced in Dart for Cross-Platform(Flutter) * Bug fixing, optimize the app * Admin Panel & APIs Development * I have Ejabberd and MongooseIM core modules modified to make it more stable for Android clients (using Smack) and iOS clients (using XMPP Framework) My creations & methodology: - I provide secure applications for banking, social with End-to-End encryption or anything which need good encryption Chat applications like WhatsApp, Google pay, Line, Kakao, Telegram, etc. Taxi applications like Uber, Ola, etc E-commerce applications like Amazon, Flipkart, etc Good at responding to unstable network connections Custom modules created in Erlang for Ejabberd and MongooseIM server for defined XEPS can scale up to millions of users. Chat modules created on the website for social, online gaming, and many more I provide the next step taken for the apps, which looks complete I have the potential to deliver a solution from beginning to end. I have worked on Video conferencing/Audio-Video-calling/Chat and messaging/Live Streaming
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Material Design
    XMPP
    Erlang
    Flutter
    Mobile App Development
    iOS Development
    Firebase
    WebRTC
    Android
    Android App Development
  • $130 hourly

    • 5.0/5
    • (212 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.
    vsuc_fltilesrefresh_TrophyIcon Freeswitch
    Session Initiation Protocol
    C++
    PHP
    Kamailio
    Asterisk
    MySQL
    Amazon EC2
    Linux System Administration
    SQL
    Elastix
    A2Billing
    VoIP Administration
    OpenSIPS
    FreePBX
    Virtualization
    Python
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At A Glance: FreeSWITCH
 
Communication is a vital part of the business world. The Internet has provided a wide and varied toolkit for communication through the development of various multimedia technologies, such as voice over Internet protocols, online chatting, and video chatting. These technologies can be combined with traditional telephony to create fully functional communication systems to fit the needs of any size of company. FreeSWITCH is open-source software designed to allow the interconnection of various communication protocols, providing a scalable, multi-platform communication solution for any communication needs. A FreeSWITCH specialist can help you optimize the FreeSWITCH software for your business or project.


A FreeSWITCH specialist is a communications professional with experience in a variety of telephone protocols, voice messaging services, text, and other media formats. A FreeSWITCH specialist can be leveraged as a consultant, helping you identify the needs of your business, developing suggestions and communication solutions, or being relied on to manage and optimize your communication network independently. FreeSWITCH specialists can also embed FreeSWITCH features into websites or webpages, as well as have the software operate as a standalone application. Working with a specialist is an effective way to manage and organize all the different communication components of your business, and since FreeSWITCH is open source, a skilled expert can collaborate with you to implement a highly customized solution for you or your business. Hiring a freelance specialist on Upwork reduces and simplifies the way you and your business communicate.


 
 
 
     
 
 
 
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