Hire the Best
Asterisk Consultants
W Peter H.
Florissant, United States
A Top-Rated, Expert-Vetted VoIP/Software engineer with over 20 years of experience.
My experience ranges from Asterisk/FreePBX phone systems, SMS messaging, Linux operating systems, to network administration. I believe you deserve a more professional, reliable, and personalized business experience, and I bring that mindset to every project.
Whether I’m developing top-secret code for Lockheed Martin, or AI telephone agents for Nomo, or creating privacy-first communications for Mecca Hosting, Inc, or designing secure, high availability Asterisk systems for TeleConnx Inc., or handling difficult troubleshooting tasks, I always commit myself to the same standard: creative, client-first solutions and efficient, high-quality work, completed in a fraction of the time.
I have a passion for transforming mundane phone interactions into exciting customer experiences, and I lean on decades of experience to create solutions that others would find impossible. In short, I can make your telephone system do pretty much anything, including turning on your coffee maker in the morning.
I look forward to working with you!
- Asterisk
- Business with 10-99 Employees
- VoIP
- Linux
- Session Initiation Protocol
- LAMP Administration
- VoIP Software
- C
- API Development
- VoIP Administration
- Amazon Web Services
- Linux System Administration
- Kamailio
- MySQL
- FreePBX
Oleksandr M.
Flower Mound, United States
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.
- Asterisk
- Python
- Virtualization
- FreePBX
- OpenSIPS
- VoIP Administration
- A2Billing
- Elastix
- SQL
- Linux System Administration
- Amazon EC2
- MySQL
- Kamailio
- PHP
- C++
- Session Initiation Protocol
Malay P.
Ahmedabad, India
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."
- Asterisk
- VoIP
- VoIP Administration
- Database Administration
- Linux System Administration
- Session Initiation Protocol
- MariaDB
- VoIP Software
- API
- Yii2
- Kamailio
- PHP
- Yii
- FreeSWITCH
- OpenSIPS
- MySQL
Aleksandr K.
Novi Sad, Serbia
Linux server installation and configuration.
Virtualization systems: VMware, Proxmox.
Cloud providers: AWS, GCloud, DigitalOcean.
IaC (Terraform, Pulumi)
Web server, web proxy configuration (Apache, Nginx, Traefik, Caddy, HAproxy).
Monitoring servers, apps and network devices with Zabbix and Prometheus.
Logging with Promtail+Loki, tracing with Tempo
Grafana
Containers: building and deploying Docker containers and services via docker compose.
Container orchestration: Kubernetes. Writing Helm charts. GitOps with ArgoCD.
CI/CD: GitlabCI, Jenkins, Ansible.
Python and Go scripting
- Asterisk
- Google Cloud Platform
- Grafana
- Linux System Administration
- Windows Administration
- Zabbix
- DevOps
- Kubernetes
- Git
- Prometheus
- CI/CD
- Mac OS X Administration
Anar A.
Tbilisi, Georgia
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.
- Asterisk
- FreeSWITCH
- Linux System Administration
- 3CX
- FreePBX
- Network Engineering
- Database Optimization
- SMS Gateway
- Session Initiation Protocol
- MySQL Programming
- Twilio API
- VoIP Administration
- VoIP
John P.
Downpatrick, United Kingdom
I like troubleshooting issues and solving those issues to a successful conclusion
I have worked for many large Global and National ISPs in Network/Systems administration, I am a 30+ year seasoned IT veteran who is well versed in almost all aspects of Network and Systems administration.
DNS and Email management are specialties.
I'm currently based in the U.K., but am available in most time zones and when needed
I have lived and worked in the U.K., Ireland, Canada and the US
Fluent English Speaker
- Asterisk
- IPv6
- Google Cloud Platform
- DNS
- Linux
- Scripting
- Postfix SMTP Server
- PHP Script
- Sendmail
- SMTP
- OpenVPN
- PfSense
- Email Deliverability
- cPanel
- Email Security
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