VoIP, otherwise known as Voice over Internet Protocol, is a digital solution for telecommunication that utilizes the transmission of voice through the use of data over the internet. This technology is typically adopted for both commercial and privately used applications. VoIP developers specialize in programming telecommunication systems using data transmission to provide efficient services for audio and video functions.

VoIP developers are highly sought after professionals as they can create a versatile and advanced system for both desktop and mobile devices. This can include creating a more interactive experience for customers with multi-way calls, conference calls, video conferencing and voicemail systems. VoIP developers can set up your business’s phone system such as forwarding calls remotely to other devices with extensions or even communicating with customers utilizing software like Callcentric, Flowroute or Voxbone.

Here's some projects that our expert VoIP Developer made real:

  • Secured and configured private networks by implementing security measures like IP SLA, NAT and ACLs
  • Integrating SIP trunks between billing platforms, PBXs and VoIP applications
  • Setting up Postfix mail server on Linux systems with TLS authentication and encryption
  • Installing and configuring sip telephony software like ASTPP into businesses
  • Developing web applications that can send and receive SMS messages utilizing VoIP APIs

Our expert VoIP Developer have created numerous projects to help business owners manage their telecommunications in a professional bet. Our developer have an array of experience in creating a secure and reliable system customized to each client demands. If you're looking to improve or create your business’ communication system, then post your project today on Freelancer.com to hire one of our skilled professional VoIP Developers today!

From 29,343 reviews, clients rate our VoIP Developers 4.87 out of 5 stars.
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    17 jobs found, pricing in USD

    As a Part-Time Vicidial Developer, you will be integral to the continuous improvement and maintenance of our Vicidial system, ensuring optimal performance to meet our organization's unique requirements. This role is perfect for a committed developer with a passion for telephony solutions and a solid background in Vicidial development, particularly in GoHighLevel integration. Responsibilities: Customization and Configuration: Tailor, configure, and uphold the Vicidial system to align seamlessly with organizational needs. Collaboration: Work collaboratively with cross-functional teams to comprehend business requirements and implement Vicidial solutions accordingly. Troubleshooting: Identify and resolve issues related to Vicidial system performance or functionality, including integra...

    $145 (Avg Bid)
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    20 bids

    Edit Description In need of an experienced Freeswitch developer who can immediately tackle two key areas: configuration and deployment, as well as customization and integration. Job tasks include: - Configuration and deployment of Freeswitch - Customization according to our specific needs - Integration of Freeswitch into our existing system We missed out on specifying desired features during configuration and deployment but I welcome any suggestions from potential freelancers regarding high-availability, scalability, and security for my project. Due to the urgency of our needs, we seek freelancers who can start ASAP and have a proven track record working with Freeswitch. Mastery in system integration and customization is necessary. Ability to work quickly without compromising quality is...

    $17 / hr (Avg Bid)
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    4 bids

    We're seeking for an experienced VoIP software developer to perform various specific tasks on a time-sensitive project. perform a market research about the top three communication mobile apps (like telegram). We would like to know their main features, and information about each one, and what technology the app was developed in. - Develop a custom software solution tailored to our specific needs. Maintenance, debugging of the existing software as well as optimization and improvement of software performance are key. - Expertise in VoIP market research is required. You'll be responsible in gathering intel on market trends and growth, conducting a competitive analysis of VoIP providers, and studying customer preferences and needs. The ideal candidate will have a strong understa...

    $563 (Avg Bid)
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    13 bids

    I'm seeking an experienced developer to integrate VoIP to WhatsApp on both Android and iOS. The main functionality that I'm interested in is voice calling. Moreover, it's critical to have the ability to call PSTN (Public Switched Telephone Network) to WhatsApp. The ideal freelancer should: - Have previous experience in cross-platform app development, specifically with VoIP integrations. - Familiarity with APIs and how to integrate them into both iOS and Android platforms. - Familiarity with WhatsApp API would be advantageous. - Understanding of the requirements and constraints of the PSTN. - Necessary skills in developing voice calling functionality. This project's success will hinge on your ability to create a seamless experience for users to engage in voice callin...

    $80 (Avg Bid)
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    I’m in need of an expert in Twilio. I'm looking for someone to revamp my current system to allow for the reception of texts directly to my email in plain text format. Skillful handling of API keys, specifically for Twilio and Sendgrid, is necessary. The system should not incorporate any high-security encryption, standard security measures will suffice. Another key feature of this project is the immediate notification via email for each incoming SMS. Effective implementation of real-time alert technology is crucial. Please only make a bid if you are conversant with the following requirements: - Twilio SMS and Sendgrid API setup - Instant email alert for every incoming SMS - Plain text email formatting Be prepared to demonstrate relevant experience. Let's connec...

    $57 (Avg Bid)
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    I am seeking a company that is skilled in handling both inbound and outbound calls. The services required include: - Customer service: Resolving product or service issues, answering queries, facilitating returns and exchanges. - Technical Support: Assisting in troubleshooting, setting up products or services, and solving technical problems. - Sales calls: Making proactive sales calls to potential customers and closing deals over the phone. The expected call volume will be of medium amount. The company should have prior experience in managing customer service, technical support, and sales calls. Knowledge in maintaining industry-grade customer service standards, technical issue troubleshooting, and successful telephone sales techniques will be greatly beneficial for this job. Only compa...

    $180 (Avg Bid)
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    I am in need of an advanced VoIP developer with specific experience in VitalPBX+Odoo integration. The main problem I am facing is with incoming calls; the webrtc phone from Odoo is not properly receiving them. Thankfully, outgoing calls from this system are working without any issues. But, since the incoming call problem persists, immediate attention to this matter is essential to me. I haven't noticed any other connectivity issue including internal call transfers or conference calls. Ideal freelancers for this project should possess: - Proven experience in VoIP development - Specific knowledge in VitalPBX and Odoo integration - Ability to diagnose and fix the issue with incoming calls - Excellent problem-solving and communication skills I am looking forward to having my system run...

    $60 (Avg Bid)
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    3 bids
    VoIP System Setup Expert -- 2 3 days left
    VERIFIED

    I need a highly skilled VoIP specialist to set up a VoIP system for less than 10 users. This setup must include features such as voice mail, call forwarding, a business phone, and ability to handle both inbound and outbound calls. Experience with will be a major plus point. The ideal candidate should have a proven track record in troubleshooting and optimizing VoIP performance. Your technical know-how will guide this project to a smooth and successful implementation. We are located in Boca Raton, Florida and are looking for someone to help set up VoIP for our company with I need our number to be ported from Microsoft. I need calls on just this one number to reach my mobile phone and one colleague’s mobile phone, and for us both to be able to make outbound phone calls from that nu...

    $203 (Avg Bid)
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    8 bids

    I'm looking for an expert in telecommunication and VoIP technology, specifically someone with experience in Asterisk and SIP integrations. Key Project Aspects: - Asterisk Setup: Your task will be to set up Asterisk with multiple features including monitor calls + transfer + hang up calls, an IVR system, and call recording. I require a high level of accuracy and efficiency in the configuration of these features. - SIP Service Connection: Additionally, I need to connect Asterisk to a SIP service. We have an AI that speaks and give response to your recorded message. So the idea is to connect this AI to the Asterisk that is connected to the SIP so it can speak with people on the phone. Ideal Skills: - Experience setting up and configuring Asterisk, IVR systems, and call recording -...

    $222 (Avg Bid)
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    As someone seeking a professional to assist in acquiring and setting up a Dinstar PBX system, this project specifically focuses on creating a small office setup - up to 20 users. The primary function required is Call Recording. Skills & Experience: - Proficiency in Dinstar PBX System setup - Technical knowledge on incorporating Call Recording - Experience with small office networks - Excellent problem solving and communication skills Your primary role will involve: - Advising on the best Dinstar PBX system suited for my needs - Performing a hallmark setup of the Dinstar PBX system - Enabling Call Recording - Ensuring seamless functionality for up to 20 users Your task will be deemed successful upon the seamless operation of a Call Recording-enabled Dinstar PBX system setup for a ...

    $194 (Avg Bid)
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    11 bids

    I am in need of a professional with in-depth expertise in Telynx system configuration to assist with the setup of my existing telephony structure. Key areas of focus include: - Configuring the Telynx system: I require help with the overall setup of the Telynx system, making it functional and efficient for my business. - Voice and messaging feature setup: The setup should incorporate voice and messaging features. However, specifics of these features are not yet defined and suggestions are welcome. Ideal Skills: - Abundant experience in Telynx system setup. - Have a strong understanding of telephony infrastructures. - Knowledge in configuring voice and messaging (SMS/MMS) feature on the Telynx system. - Excellent communication skills to convey information and advise on the best options f...

    $93 (Avg Bid)
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    I am looking for a skilled Asterisk developer to customize and integrate my existing AI systems into Asterisk. Specific tasks include: - Integrating Asterisk with intelligent speech recognition and natural language processing systems. - Incorporating chatbot functionality for automated customer support. - Implementing AI-powered call routing and prioritization. The ideal candidate should have prior experience in Asterisk customization, AI integration, and development. Knowledge of speech recognition, natural language processing, chatbot technology, and AI-based routing is crucial for this project.

    $55 / hr (Avg Bid)
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    Seeking a skilled IMS Specialist to enhance our VoIP systems. The project involves system configuration and troubleshooting, with a focus on integrating new functionalities. Ideal candidates will have experience with: - Expertise in VoIP technologies and systems. - Proficient in system configuration tailored to business needs. - Strong analytical skills for effective troubleshooting. - Experience in integrating VoIP functionalities such as call routing, voicemail, and call recording. Your role will be pivotal in ensuring our VoIP systems are configured for optimal performance, integrating key functionalities to enhance our communication capabilities. This includes troubleshooting any issues that arise during the integration process. Your knowledge and experience will contribute significa...

    $29 / hr (Avg Bid)
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    7 bids

    We are seeking a highly skilled and experienced AWS Lex / IVR (Interactive Voice Response) Expert for a short-term engagement. As an AWS Lex / IVR Expert, you will be responsible for designing, developing, and implementing voice-based applications using Amazon Lex and IVR technologies

    $383 (Avg Bid)
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    In the search for an experienced developer, I require a web2call application based on Asterisk. This web2call should focus on enabling international call capabilities. Specifically, the created application should run adeptly on Linux platform systems. Additionally, the application needs to support one-on-one call functionality for its users. Hence, any freelancer bidding on this project should preferably have: - Proficiency in Asterisk software - Experience with building web2call applications - Knowledge of Linux platform compatibility issues - A background in creating systems for making international calls Your understanding of one-on-one call functionality support will be highly valued in this project. This project will be a significant contribution to connecting people across the glo...

    $321 (Avg Bid)
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    I am venturing into setting up a VoIP Service Provider Platform (Teleman) with my own server and domain. This platform will be targeted to provide both international and local call services. Here's what I'm looking for: Key Features Desired: • International and local Call functionality • International phone number support • Call forwarding The ideal freelancer for this project should have experience setting up VoIP platforms (Teleman) with the above-mentioned features before and be knowledgeable in international call support systems.

    $535 (Avg Bid)
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    21 bids

    NECESITO ACTIVAR ,MI CERTIFICADO SSL IN MI SERVIDOR Y REDIRECCIONAR EL HTTPS

    $26 (Avg Bid)
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