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Rating is 4.8 out of 5.
4.8/5
based on 332 client reviews
  • $40 hourly
    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 utilities
    Featured Skill VOIP Administration
    Kamailio
    Session Initiation Protocol
    IP Multimedia Subsystem
    OpenSIPS
    VoIP Administration
    VoIP Software
    Rich Media
  • $50 hourly
    With over 20 years of experience in planning, installing, configuring, and debugging VoIP systems, I am confident that I can contribute significantly to your project. I have a proven track record in setting up and maintaining VoIP systems, including Kamailio, Asterisk, FreeSWITCH, FreePBX, VOS3000, A2Billing, ASTPP, 3CX, and Kazoo. Additionally, I have extensive experience working with SMS systems like PlaySMS, Jasmin, and Kannel. I am also 3CX certified, which further assures my capability to meet your VoIP needs with efficiency and precision. Whether it's troubleshooting, configuring systems, or managing complex installations, I bring a meticulous approach to ensure the project is delivered successfully and on time. If you choose to work with me, I guarantee 100% satisfaction and a solution tailored to your specific requirements.
    Featured Skill VOIP Administration
    VoIP
    Asterisk
    VoIP Administration
    Twilio API
    MySQL Programming
    Session Initiation Protocol
    SMS Gateway
    Database Optimization
    Network Engineering
    FreePBX
    3CX
    Linux System Administration
    FreeSWITCH
  • $79 hourly
    I'm here to make your communication experience extraordinary. As the driving force behind RingCentral Expert and SME, I bring a wealth of knowledge in VoIP implementation and support, specializing in platforms like RingCentral, Zoom Phone/CC, Avaya, Goto Connect, Vonage. I've always believed that expertise should come with a human touch. Here's what you can expect when working with me: Deep Roots in VoIP: I'm not just certified; I'm passionate about what I do. With certifications in RingCentral, Avaya, Zoom and Vonage, I'm well-versed in the intricacies of these platforms. Your Time Matters: I understand that every second counts in your business. That's why you can rely on me for prompt responses and effective solutions. Who I Serve: From small startups to large enterprises, I've had the privilege of assisting businesses of all sizes. My expertise spans various industries, including law firms, universities, fitness, and finance, to name a few. Here is a list of the most common tasks I perform within a VoIP platform: Call queues / Auto Attendant - IVR Call Forwarding / Call Routing Voicemail Setup / Custom Answering Rules Porting / User setup / Limited extensions SMS Automation** (New upgrade) Shared lines Multi Site Hot Desking Templates / Role setup Wide billing knowledge Call logging expert / Audit trail Announcement / Audio greetings - Voice over Call Recording / Holiday Config Desk Phone Provisioning Analog line integration with RingCentral VoIP - ATA config. Integration support. Let's Connect: I'm here, ready to be your partner in enhancing your communication systems. Reach out to me right here on Upwork, and let's start a conversation. Looking forward to understanding your unique needs and finding the perfect solution for you!
    Featured Skill VOIP Administration
    PBX
    Technical Support
    VoIP Administration
    VoIP Software
    Avaya
    RingCentral Glip
    Telephone System
    IVR Software
    Telecommunications Engineering
    VoIP
    System Configuration
    System Administration
    VoIP PBX
    Phone Support
    Business with 100-999 Employees
    Call Center Management
  • $50 hourly
    Asterisk | Kamailio | FreePBX | Big data | AWS |Azure |GCP | Linux | Unix | Ubuntu | Debian | Puppy | VoIP Expert | IBM Watson | Google API | A2Billing | WebRTC | PHP | JSP | MYSQL | Oracle|Ansible|Docker Thanks for looking at my profile! I'm an IT Engineer offering more than 15 years of professional-level experience. I have deployed many Enterprise and Mid-Size Cloud, Network, and VoIP solutions worldwide. I am a professional Freelancer under a single roof with excellent communication skills, a fast learner, computer literate, can handle multitasking work and a very reliable contractor. Particularly interested in client/server and relational network design & develop using C/C++,Java,Php and C#. Always been interested in migration projects, as well as close interaction with the VoIP platform. I am always eager to provide quality work to my honorable clients. Hourly or fixed-price contract rates are negotiable depending on the work. I’m always working in a friendly environment so that we can make long-term business relationships, and feel honored to have a continuously growing list of happy clients with positive feedback on my work. I will do my best to satisfy my clients to the fullest. Do not hesitate to ask any questions you may have or discuss any ideas I may help you with. I am very easy to talk with.
    Featured Skill VOIP Administration
    VoIP Software
    Natural Language Processing
    MySQL
    Linux System Administration
    Telecommunications Engineering
    IBM Watson
    VoIP Administration
    Asterisk
    FreePBX
    Session Initiation Protocol
    Red Hat Enterprise Linux
    VICIDIAL
    Google APIs
    Amazon Web Services
  • $25 hourly
    I am a Network Engineer with experience of more than 8 years. I have good skills in both system administration/integration and software engineering. I have had a good experience with Linux system administration, VoIP and SS7/SIGTRAN solutions and some cloud computing using docker. I have a very good experience with C/C++, JAVA, C#, node.js, socket.io, php programming languages.
    Featured Skill VOIP Administration
    SMS Gateway
    SMS
    API
    Linux System Administration
    VoIP Administration
    HTML
    Kannel
    PHP
    Asterisk
    SMPP
    JavaScript
    Linux
    Docker
    C++
    C
  • $65 hourly
    Hi, I'm an experienced and certified (MS700-MS720-MS721) Microsoft Teams Phone & Rooms engineer. I'm implementing, configuring and troubleshooting Microsoft Teams Phone & Rooms ecosystems for multinationals,SME's, nonprofit and government organizations. * Microsoft Teams Calling setup (Auto-attendants & Call Queues) * Microsoft Teams Direct Routing with Audiocodes SBC * Microsoft Teams Direct Routing with Hosted Audiocodes SBC * Microsoft Teams Calling Plans & Operator connect * Luware Nimbus routing and contact center solutions on Microsoft Teams * Roger365 contact center solutions on Microsoft Teams * Skype For Business on-premise to Microsoft Teams migrations * Teams devices and Teams Rooms systems
    Featured Skill VOIP Administration
    Session Initiation Protocol
    Phone Communication
    VoIP Administration
    Microsoft Power Automate
    Mitel
    VoIP
    VoIP Software
    Skype For Business
    Microsoft Teams
    PBX
    Skype
    Call Center Management
    Office 365
  • $25 hourly
    With over 17 years of experience in supporting Netsapiens Voip platforms, I bring a deep understanding of troubleshooting Voip SIP call flows and Netsapiens dial plan issues. I am skilled in creating and adding new Dial Translations as required. My expertise extends to the migration of different Voip platforms such as FreePbx, 3cx etc to Netsapiens Voip Solutions and Carrier integrations and testing with Netsapiens. I am proficient in configuring overrides for Yealink and Grandstream phones and adept at troubleshooting end-user devices from these brands. I am capable of handling MACD (Moves, Adds, Changes, Deletes) processes for onboarding and possess expertise in VoipMonitor QOS, WireShark and TcpDump. Core Skills: VoIP Technologies: Netsapiens, FreeSWITCH, Kamailio, OpenSIPS, FusionPBX, Asterisk, 3CX, FreePBX, Elastix, Yealink,Grandstream Protocols: SIP, RTP, SDP, WebRTC Database Management:Mariadb,PostgreSQL, MySQL Cloud Platforms:Azure,AWS, GCP, DigitalOcean System Administration: Linux (CentOS, Ubuntu), Docker, VMware, Hyper-V Tools: Wireshark, tcpdump, sipp,Zabbix Technical Excellence: Deep understanding of VoIP protocols and systems ensures top-notch performance and reliability. Proven Results: Successfully delivered projects for diverse clients, enhancing their communication infrastructures. Client-Centric: Dedicated to providing tailored solutions that meet unique client needs, ensuring satisfaction and long-term collaboration Looking for a VoIP expert to elevate your communication systems? Let's discuss how I can help you achieve your goals. Contact me today!
    Featured Skill VOIP Administration
    Microsoft Teams
    VoIP Administration
    Linux
  • $45 hourly
    IT Professional with experience as Administrator/Consultant in Servers, Virtualization, Networking, VoIP PBX, Azure and AWS Cloud System implementations. I work very hard, always giving my best and constantly improving my skills to learn new things to deliver the best project results to my clients. Having Top Notch skills in: -Designing and Implementing Linux Systems(Red Hat, Centos, Debian, Ubuntu, Suse, Fedora). -Windows System Administration (AD, DNS, DHCP, PKI, LDAP). Azure Administrator certified. -Administration of VMware ESXi and AWS (EC2, HFS, S3, RDS, Lambda) -Scripting languages: Python, PowerShell, Bash. -Administering Atlassian application stack: Jira, Confluence, BitBucket. -Enterprise Tools for Identity and AD management. -LDAP, GSuite, and SSO authentication systems management. -Terraform and Ansible. -AD, LDAP, Vulnerability Management, Networking, and Monitoring system -Administrator of Citrix and Citrix ADC implementations for applications delivery controlling -Cisco Systems ( Router, Switches, ASAs, Servers). -Asterisk PBX Systems(FreePBX, Elastix, FusionPX, ViciDial, goAutoDial, Kamailio, Call Centers Solutions, and integrations with CRMs). -Clustering Platforms (Web Servers, Mysql DataBase, Asterisk, FreePBX). -Exchange/Postfix/Zimbra Mail Servers. I can work by myself with minimum to no supervision. I'm also an outstanding team player, always willing to cooperate and give my input in needed situations. I'm very flexible with hours, and I maintain good communication.
    Featured Skill VOIP Administration
    Linux System Administration
    Cisco ASA
    Asterisk
    DevOps
    Cisco Certified Network Associate
    Cisco CallManager
    Deployment Automation
    VoIP Administration
    Kubernetes
    VICIDIAL
    Microsoft Exchange Server
    Microsoft Azure
    System Administration
  • $45 hourly
    I can take care of your IT Needs, or I can cover for someone not being able to live chat.
    Featured Skill VOIP Administration
    Helpdesk
    Online Chat Support
    VoIP Administration
    Information Technology Operations
    Network Planning
    Computer Maintenance
    OKTA
    OneLogin
    Mobile Device Management
    Computer Network
    Tech & IT
    Desktop Support
    Ticketing System
    Office 365
    System Administration
  • $100 hourly
    Is your hair on fire? I specialize in relationships with my customers. I understand the issue quickly and work to resolve your computer problem in short order. Contact me for your remote computer servicing, systems administration, conferencing setups, security audits, virus prevention, podcast setup, audio upgrades and more. Experienced Computer Support Specialist that has been in the business for numerous years. Comptia A+, Server+, Network+, Security+, Cisco CCNA, CCNA/Voice, CCNA/Wireless, Microsoft MCP, MCDST, MCTS, MCITP, and MCSA Certified in Microsoft Windows 7, 8, 10, Server 2008, Server 2012, and Server 2016. I have built custom desktops and I have serviced various desktops, laptops, and smartphones that have been released. Well-versed in the technological sector. Very knowledgeable and always give clear verbal answers to all questions. Reliable service and support. Customer satisfaction always key.
    Featured Skill VOIP Administration
    IT Infrastructure
    Helpdesk
    VoIP Administration
    End User Technical Support
    Windows Administration
    LAN Administration
    Hardware Troubleshooting
    Incident Management
    IT Service Management
    WordPress
    Domain Migration
    Technical Support
    Google Workspace
    Security Management
    System Administration
  • $44 hourly
    I am an IT professional with level III technical support experience on the following technologies and platform: - Windows servers - Exchange servers - Active Directory servers - Office365, Amazon EC2 and Windows Azure - VMWare and Hyper-V - Labtech (Connectwise Automate), Kaseya and various other RMM tools - Connectwise Manage and Autotask PSA - Veeam and Shadowprotect - Firewall (Sonicwall, Watchguard etc.) - Network operations center (NOC) - Patch management and desktop/server maintenance - AV and security solutions (Webroot, Sentinelone, Trend Micro etc.) - Qualys scan for penetration testing - Powershell scripting I have been supporting various MSP (Managed services providers) businesses since 2007 and have been among the top rated contractors available for the outsourcing support for the MSP businesses. I am quick in responding back, attentive and a good team player. I am currently heading a ISO 9001:2008 and CMMI certified IT company that focuses on providing remote support to the MSP businesses.
    Featured Skill VOIP Administration
    Social Networking Development
    Computer Network
    Windows Administration
  • $20 hourly
    I have been working with Asterisk-based and other PBX systems, including Vicidial, FreePBX, Elastix, and Issabel
    Featured Skill VOIP Administration
    VoIP
    FreePBX
    VoIP Software
    Linux System Administration
    Asterisk
    VICIDIAL
    Web Services Development
    Nagios Core
    VoIP Administration
    Iptables
    Elastix
    Linux
  • $15 hourly
    I work in IT business for a 18 years now, and I am specialist for access control systems and Recording of working hours software. For last 8 years I work as VoIP administrator in my company and I help to our client in creating, starting and managing VoIP systems in their companies. I have good experience in MS Access and MS SQL databases and know how to create various queries as needed. Also i have some experience in creating and administering wireless systems both non professional and professional environment. I worked in Service dept in my company so I have experience in PC hardware and software and windows operating systems. I am speaking English fluently, and can do general and technical translation from English to Serbian (or Croatian and Bosnian) and vice versa. Have major experience in converting pdf files to MS word and excel. I am also good typist and could do good transcription from video or audio. I believe I am good in web research because I have done couple of this researches for my company especially in getting peoples contacts and e-mails from the web for purposes of organizing events for our clients. I already have some jobs completed here on Upwork with focus on data research and data mining on internet. (jobs shown in my portfolio) Also I have some minor experience in PACS and work on some PACS servers and connecting PACS machines with various databases.
    Featured Skill VOIP Administration
    Grandstream
    FreePBX
    3CX
    VoIP
    Session Initiation Protocol
    Asterisk
    PDF Conversion
    VoIP Administration
    VoIP Software
    Wireless Network Implementation
    Network Planning
    Windows 7 Administration
    Network Design
    Serbian
    Microsoft Word
    Microsoft Excel
  • $50 hourly
    I have more then 7 years experience in networking (routing,VPN, link reservation(failover), trafic priority etc. ), and more then 15 years of design and develop ERP systems for milk, beer, agro and other production industry. 2017-04-01 MikroTik MTCNA 1704NA7632 2017-04-14 MikroTik MTCWE 1704WE8685 2017-04-28 MikroTik MTCRE 1704RE10039 I love my job and hope you need my skills. I would be happy to communicate with interesting people.
    Featured Skill VOIP Administration
    Routing
    Wireless Network Implementation
    VoIP Administration
    Scripting
    FTP
    Microsoft Visual Studio
    OpenWrt
    LAN Implementation
    MikroTik RouterOS
    Mikrotik RouterBOARD
    Network Engineering
    Network Design
    VPN
    MikroTik
  • $15 hourly
    I am an experienced VoIP Engineer and Implementation Specialist with expertise in a diverse range of phone systems, including RingCentral, Vonage, Aasani, Nextiva, Call Rail, Call Metric, Intermedia, GoTo, Verizon One Talk, 3CX, UCM Grandstream, and more. Leveraging my extensive knowledge and problem-solving skills, I excel at assisting users and customers in resolving technical issues effectively. My capabilities include troubleshooting software problems, guiding users through device setup and configuration, and providing clear explanations and instructions. I am proficient in implementing, configuring, and troubleshooting complex issues such as call routing, auto-attendants, call recording, and phone provisioning. I excel at identifying and resolving technical challenges, training end-users, and collaborating with cross-functional teams. My commitment is to ensure optimal system performance and user satisfaction, delivering high-quality service and technical support. With excellent communication skills across phone, chat, and email, I am detail-oriented, a strong problem solver, a team player, and capable of working under pressure with minimal supervision. My skills are : Technical Support • Resolve network issues • Assist end users on connecting devices to their network • Resolve software and hardware issue • Software and email setup and configuration • User Account Management • Remote Support Phone System Admin • Troubleshoot and Configure RingCentral, Vonage, Aasani, Nextiva, Call Rail, Call Metric, Intermedia, GoTo, Verizon One Talk, 3CX, UCM Grandstream, and more. • Call Routing and Auto-Attendant Configuration • Voicemail Management and Call Recording • End-User Training and Documentation. • RingCentral Analytics Dashboard • Provisioning Desk phones Email Management: • Excellent in proof reading email for grammar and spelling. • Outstanding in organizing email and regular monitoring to have zero inbox. • Very good in providing email template. • Ensure prompt and accurate communication via email. Scheduling and Calendar Management • Excellent ins using RingCentral and Zoom on scheduling meetings. • Outstanding in managing and creating schedules for a meeting. • Adept in using Google calendar and Outlook calendar Data Entry and Web Research • Creating and generating reports through powerBI • Very proficient in typing and transcription. • Knowledgeable in using Microsoft office 365 and Google Suites. • Excellent in research and administrative tasks.
    Featured Skill VOIP Administration
    End User Technical Support
    Analytics Dashboard
    Microsoft Office
    VoIP
    Email Communication
    VoIP Administration
    CRM Software
    Customer Service
    Zoom Video Conferencing
    Technical Support
    RingCentral Glip
    Microsoft Dynamics 365
    Phone Support
    Email Support
    Online Chat Support
  • $70 hourly
    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.
    Featured Skill VOIP Administration
    FreeSWITCH
    OpenSIPS
    VoIP Software
    Red Hat Enterprise Linux
    Linux System Administration
    Network Administration
    System Administration
    VPN
    VoIP
    Network Engineering
    Network Design
  • $50 hourly
    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."
    Featured Skill VOIP Administration
    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
    Bertrand Ndakena has a M.A. in Telecoms. He is a Udacity certified cloud developer and self-taught cloud administrator. Passionate about cloud developments/operations. Also interested in AI/ML and Data Science. Has extensive experience setting up cloud solutions(both open source and proprietary) and VOIP(including SIP-based) solutions.
    Featured Skill VOIP Administration
    Session Initiation Protocol
    A2Billing
    VICIDIAL
    WebRTC
    Service Cloud Administration
    VoIP Software
    Asterisk
    FreePBX
    VoIP Administration
    FreeSWITCH
    3CX
    Elastix
  • $40 hourly
    BE in Electronics and Telecommunication with 20 years of experience in Firewall, Networks. VOIP, Wireless. Datacenter, Servers etc Security: Cisco ISE, Cisco Firepower, Cisco ASA 5500, Cisco Meraki, PaloAlto, Checkpoint, Sophos, Fortigate, Dell Sonicwall, Juniper, PFSense, Rapid7, Watchguard, Barracuda SEIM: Solarwinds, Wazuh, Splunk Network: - Cisco, HP, Brocade, Juniper, Zylex, Microtik, GPON/EPON, Ubiquiti VoIP: Cisco, Avaya, Asterisk, FreePBX, 3CX, Microsoft Teams, Grandstream Wireless: Cisco, Ubiquiti, Mojo (AirTight), Aruba, Video: Cisco Telepresence MX200/300/SX20, Telepresence Server, Telepresence Conductor Server, Avaya Scopia XT Data Center: VMware vSphere 7.x, Cisco UCS, Microsoft Hyper V, Citrix Xenserver, Oracle Virtual Box Applications: Microsoft SCCM, MS SQL Server, WSUS, Radius Server, Squid Proxy Server, Keypass, Wordpress Cloud: Amazon Web Services (AWS), Google Cloud platform, Microsoft Azure Cloud Storage: NetApp, Western Digital Routing Protocol: OSPF, EIRGP, BGP, RIP. Network Tools: Wireshark, Solarwinds, Netflow, PRTG, Cacti, Scrutinizer, Logzilla, Wazuh Operating System: Windows 2012/2016/2019, CentOS, Ubuntu
    Featured Skill VOIP Administration
    VoIP Administration
    Asterisk
    Cisco CallManager
    Cisco ASA
    Cisco UCS
    Microsoft Active Directory
    Cisco Router
    Sophos Sophos UTM
    Fortinet
    Juniper
    Cisco WLC
    VPN
  • $30 hourly
    A technical professional with a background in DevOps/Site Reliabiltiy Engineering and security, with a strong focus on creating engaging content which also increases clients visibilty and overall SEO. Translating complex technical jargon into appealing articles is something that I take great pride in. I worked with multiple companies over the past 4 years from cybersecurity vendors to SaaS developers to create how to guides, product pages, FAQs and blog posts. Please see some of this feedback below: SD WAN, SASE Security and Cloud content creation – “Connor has produced some excellent content for us, we intend to continue leveraging his capabilities in the future.“ - CEO/Founder Network Consultancy Services that I offer: - SEO optimised blog posts - User guides (How to, SaaS, FAQs) - Case studies and Whitepapers. - Technical documentation, mainly for API endpoints and SaaS - Proofreading and document editing SEO is something that I am very knowledgeable about. I like to identify your audience by doing keyword research and suggesting ideas that'll benefit yourself. Before I submit an article to the client I run it through an SEO article checker (Yoast and Semrush) to ensure the highest quality and optimization.
    Featured Skill VOIP Administration
    Network Planning
    Cisco Certified Network Associate
    Solution Architecture
    LAN Administration
    Cisco Router
    SNMP
    Network Administration
    Cisco Meraki
    Network Security
    Juniper
    VoIP
    Network Monitoring
    Network Design
    Network Engineering
    Network Equipment
  • $30 hourly
    Hey, Are you looking for an AI/ML expert developer to make your idea feasible? Then I believe I am here to assist you in every possible way to achieve your idea. As an experienced AI/ML developer for more than 7+ years, I have worked on multiple modern technologies that have helped to shape the world. Let me share my areas of expertise that I possess: - ✅ Have worked on Multiple projects based on transformer models like BERT, GPT, and T5 and have built multiple AI Chatbots leveraging Chat GPT. ✅ I am highly skilled in Python, R, TensorFlow, Keras, PyTorch, Scikit-learn, and other relevant libraries and frameworks. I have extensive experience working with cloud platforms such as AWS (SageMaker, EC2, and S3), GCP (AI Platform and Dataflow), and Azure (ML Studio and Databricks) for deploying AI/ML models at scale. ✅ I am well versed in Advanced Machine Learning Algorithms that include SVM, Decision Trees, Random Forests, Gradient Boosting, K-Means, DBSCAN, PCA, ICA, and Q-Learning. ✅ Proficient with Natural Language Processing (NLP) including Tokenization, POS Tagging, Dependency Parsing, Named Entity Recognition, Sentiment Analysis, and Seq2Seq models ✅ Worked on Deep Learning Architectures such as CNNs, RNNs, LSTMs, GRUs, GANs, Autoencoders, and Attention Mechanisms ✅ I have worked on multiple Computer Vision projects where I have used Object Detection, Image Segmentation, OCR, Facial Recognition, and Style Transfer ✅ Well-versed in Time Series Analysis technology such as ARIMA, SARIMA, GARCH, and Prophet ✅ I have trained models based on datasets using Supervised Learning, Unsupervised Learning, Semi-Supervised Learning, Reinforcement Learning, Transfer Learning, and Active Learning ✅ Apart from that I am also proficient with: - -Big Data Analytics: Hadoop, Spark, and Dask for distributed and parallel computing -Feature Engineering: Selection, Extraction, and Transformation techniques -Model Optimization: Hyperparameter Tuning, Regularization, and Pruning -Data Visualization: Matplotlib, Seaborn, Plotly, and D3.js My analytical and problem-solving abilities, combined with effective communication skills, enable me to collaborate seamlessly with interdisciplinary teams and clients. I continually update my knowledge by exploring the latest developments and research in AI/ML, ensuring my clients receive state-of-the-art solutions. If you seek an AI/ML expert who can translate complex concepts into innovative, data-driven applications, I would be eager to discuss how my technical proficiency and experience can benefit your project. Let's connect and build exceptional solutions together!
    Featured Skill VOIP Administration
    Machine Learning
    Chatbot
    OpenCV
    ChatGPT
    Computer Vision
    Artificial Intelligence
    Native App Development
    Xamarin
    Flutter
    Laravel
    Mobile App Design
    Web Design
  • $15 hourly
    With over 8 years of experience in different fields, I am a Top Rated Freelancer who always looks to provide the best satisfaction level on any project or job. My skillsets are definitely in a wide area, I have much experience in different fields but let me list my most valuable skills. 1. VoIP Specialist: I have worked with a lot of vendors implementing and supporting their VoIP Solution or Sip Trunk Solution. Zoom Phone, Vonage, Goto, Intermedia, NEC, 3CX, Vodia PBX, DialPad, and NetSapiens are some of the vendors I have a lot of experience with. FlowRoute, VoxTelesys, DID Logic, and SteadyConnections are some of the Sip Trunk Providers I have worked with. Cloud PBX and On-Premise PBX experience have been a great area for me. 2. Technology Savvy: I have worked for Microsoft as an SME, as a Tier 2 for NEC, and Specialist for Intermedia. this created a wide technology expertise. I'm very familiar with AI and almost any new tech product out there. This also includes my ability to get familiar with software in no time, I have worked with different PSAs like Freshdesk, ServiceTitan, HindSight, Keap, Connectwise, and MS ASD, probing I can adapt to any environment. 3. Customer Service Professional: I've been working in the BPO and Freelancer industry for over 5 years, I have excellent QA and Customer service skills, I'm also at a C2 English level and Native Spanish Level, being able to provide support to any kinds of product and situation. 4. Proactive Learner and Fast Learner: You can see my job experience in my Upwork Profile and I always excel in any position with any product. I am an outstanding learner and I am passionate about creating the best processes with less effort. Thank you very much for visiting my profile and I hope we can work together! Happy day.
    Featured Skill VOIP Administration
    3CX
    Freshdesk
    Castilian Spanish
    English
    Computer Skills
    Product Knowledge
    VoIP Software
    Microsoft Windows
    VoIP PBX
    Tech & IT
  • $55 hourly
    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 Teams
    Featured Skill VOIP Administration
    Session Initiation Protocol
    CentOS
    Linux
    FreeSWITCH
    Customer Relationship Management
    A2Billing
    Asterisk
    MySQL
    WebRTC
    Android
  • $99 hourly
    I have strong skills in MySQL, SQL Server, MongoDB, PHP, Laravel, VueJS, ViciDial, PostGress, NodeJS, Linux, and others. With more than 20 years of experience leading the design, development, and delivery of complex projects and high-performance solutions.
    Featured Skill VOIP Administration
    Microsoft Visual Studio
    Trixbox
    FreePBX
    Vue.js
    MongoDB
    Laravel
    Java
    SQL
    Asterisk
    VICIDIAL
    Unix Shell
    MySQL
    Microsoft VBScript
    Node.js
    Perl
    PHP
  • $50 hourly
    Good Day I'm Daniel Krahenbuhl. Originally from Switzerland and living in Gdańsk Poland for the last couple of years. I can communicate in English, german and french (if needed :-)). I do enjoy working as a freelance software engineer and sometimes project manager (if the project is interesting). It would be awesome to connect with you and hear what cool projects you have in mind. Let's do it and happy days always. My general work experience: I design and write Software over the last 30 years Node.JS backend development Build API’s / Integrate third party API’s Experience in MySQL/MariaDB, MongoDB Voice/Video/Asterisk: I work with Asterisk since its; s beginnings (25 years ago)
Especially if you build large, scalable services. 
| designed some of the largest and most complex Asterisk system globally. During the years i also gained a lot of in-dept knowledge of Twilio, Pipedrive and Hubspot. Third party API Integrations I have a lot experience in integrating and using following API's Hubspot, Pipedrive, Insightly, Sendgrid, MailChimp, and many more Monday.com Over 7 years of expertise in transforming businesses through cutting-edge process optimization and seamless integrations. With 30 years of programming experience and a background in business consulting, I possess a unique set of skills to elevate your organization to new heights. At the core of my services lies Monday.com, a powerful platform that has revolutionized how businesses manage their workflows and projects. As a seasoned Monday.com specialist, I am adept at tailoring this robust tool to suit your specific needs, streamlining your processes, and enhancing collaboration across your entire team.
    Featured Skill VOIP Administration
    VoIP
    Twilio API
    RESTful API
    Node.js
    API Development
    Asterisk
    Pipedrive
    API Integration
    WebRTC
    FreePBX
    HubSpot
    Stripe API
    Nagios Core
    API
    PHP
  • $200 hourly
    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.
    Featured Skill VOIP Administration
    Session Initiation Protocol
    C++
    PHP
    Kamailio
    Asterisk
    MySQL
    Amazon EC2
    Linux System Administration
    SQL
    Elastix
    A2Billing
    VoIP Administration
    OpenSIPS
    FreePBX
    Virtualization
    Python
  • $110 hourly
    Technology leader whose qualifications include a certification in Helpdesk Management and Operations Management; and detailed knowledge of networking technologies and best practices. Over 24 years of experience in the creation and deployment of solutions protecting networks, systems and information assets for the Education sector as well as for diverse companies and organizations. Proficient in the following Systems/Technologies: Linux Based Systems (Ubuntu, Debian and CentOS); Windows Desktop (all), Asterisk VOIP Systems, Windows Server Operating Systems (2000-2022), Active Directory Administrator, VMWare Esxi 5.5-7, HyperV. Proxmox, Google Workspace Admin and Office 365 Admin, Sharepoint Admin. Experience with Blockchain technologies. In the Managed IT Services sector I have experience with Nable, NinjaOne and Connectwise. LANs, WANs, VPNs, Routers, Firewalls, TCP/IP, Aruba WiFi and Switches, Ubiquiti Unify, Sophos In my current role I work as a Sr. Systems Engineer, Incident Manager and IT Consultant. I look forward to discussing your specific technology project with you.
    Featured Skill VOIP Administration
    Blockchain
    Telecommunications Engineering
    FreePBX
    Microsoft SharePoint Administration
    Data Center Operations
    Mobile QA
    VMware ESX Server
    VMware Administration
    Network Administration
    Linux System Administration
    Windows Administration
    TCP/IP
    Asterisk
    Windows Server
    Microsoft Exchange Server
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