VoIP Developers For Hire
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Hire engkarimismail
engkarimismail engkarimismail
$50 USD / hour
✅Senior Network & System Engineer | Security|VOIP✅Malaysia✅ About Me I am an experienced IT professional with expertise in server administration, networking, virtualization, and security. My skill set spans managing server operating systems, configuring directory services, implementing DNS/DHCP solutions, and deploying virtualization platforms. I have a strong background in...✅ About Me I am an experienced IT professional with expertise in server administration, networking, virtualization, and security. My skill set spans managing server operating systems, configuring directory services, implementing DNS/DHCP solutions, and deploying virtualization platforms. I have a strong background in firewalls, scripting, containerization, and database management. Additionally, I specialize in mail servers, backup systems, and cloud technologies. With advanced networking skills, including Cisco routing, VLAN management, VoIP/IP telephony, and penetration testing, I am well-equipped to handle complex IT infrastructures. I am dedicated to delivering reliable solutions, ensuring data integrity, and enhancing system performance. ✅Send me now 24/7 Availability Unlimited Revisions Fast Response ✅ Server Operating Systems Windows Server (2003 to 2024) | Ubuntu | CentOS | Debian | RHEL ✅ Directory Services Active Directory | OpenLDAP ✅ DNS and DHCP Windows Server DNS | DHCP | Linux DNS | DHCP ✅ Virtualization Microsoft Hyper-V | VMware ESXi | vCenter | Proxmox VE ✅ File Servers IIS FTP | proftpd | FileZilla | FTP Server | Samba ✅ Web Servers Apache | NGINX | Microsoft IIS ✅ Scripting and Automation PowerShell scripting | Bash scripting ✅ Containers Docker | Windows Subsystem for Linux (WSL) ✅ Backup Systems Veeam Backup | Iperius Backup | UrBackup ✅ Mail Servers Mailcow | Microsoft Exchange (2000–2019) | MailWizz | Postfix | EXIM ✅ Database Servers MySQL | PostgreSQL | MariaDB ✅ Firewalls and Security MikroTik | PFSense | Cisco Firewalls ✅ Networking Skills Cisco Routing and Switching | VLANS | OSPF | VoIP and IP Telephony | Network Penetration Testing Access Control Lists (ACLs) Security (MITM Attack Mitigation) ✅ Recovery Services Password recovery for accounts and routers | Disaster recovery planning ✅ VOIP Service Freepbx | freeswitch | CME | IP TELEPHONY | 3CX SYSTEMS ✅ Cloud Service AWS, DigitalOcean, Hetzner, Azure, Google Cloud Platform, IBM Cloud, Oracle Cloud, Alibaba Cloud, Contabo, Seva less -
Hire hashonecreatives
hashonecreatives hashonecreatives
$40 USD / hour
600+ Clients | Top 1% AI & Software AgencyPakistan🚀 Top 1% AI & Full-Stack Software Engineering Agency We help venture-backed startups and global enterprises replace manual workflows with custom AI agents, scalable web platforms, and native mobile apps. With 200+ engineers across the US, UAE, and Pakistan, we combine enterprise-grade compliance with rapid...🚀 Top 1% AI & Full-Stack Software Engineering Agency We help venture-backed startups and global enterprises replace manual workflows with custom AI agents, scalable web platforms, and native mobile apps. With 200+ engineers across the US, UAE, and Pakistan, we combine enterprise-grade compliance with rapid development cycles. ⚡ CORE SOLUTIONS WE BUILD 1. Custom AI & Automation Systems • Custom AI Agents & RAG-based Knowledge Bases (OpenAI, Claude, Llama 3) • Multi-modal Media Workflows (Voice cloning, automated video generation, custom avatars) • Biometric KYC & Security (Automated OCR, facial recognition, liveness checks) 2. Enterprise Web & Mobile Products • Modern Web Platforms: React.js, Next.js, Node.js, Python, Django, Laravel • Cross-Platform Mobile Apps: Flutter, React Native (iOS & Android) • Cloud & Backend Architecture: AWS, Azure, Docker, Kubernetes, Microservices 💼 WHY ENTERPRISES PARTNER WITH US ✓ 24/7 Multi-Time-Zone Execution (US, Europe, Middle East, Asia) ✓ Production-Grade Security & Clean Architecture ✓ Full Product Lifecycle (Architecture ➔ Build ➔ Deployment ➔ Scale) Ready to build? Click "Invite to Bid" or message us with your project specs for an immediate scope review. less -
Hire abusayed2004
abusayed2004 abusayed2004
$50 USD / hour
Ai Voice Agent, Asterisk PBX, SIP, Linux, SecurityBangladeshI am currently seeking long-term remote and on-site job opportunities. With 15 years of experience, I have worked extensively with VoIP, Asterisk, cloud technologies such as AWS and OpenStack, Server security, Vtiger CRM, Open VPN, CentOS, Ubuntu, Redhat, VoIPSwitch, Oracle DB, RHEVM, MySQL, and Linux customisation. I...I am currently seeking long-term remote and on-site job opportunities. With 15 years of experience, I have worked extensively with VoIP, Asterisk, cloud technologies such as AWS and OpenStack, Server security, Vtiger CRM, Open VPN, CentOS, Ubuntu, Redhat, VoIPSwitch, Oracle DB, RHEVM, MySQL, and Linux customisation. I am also proficient in Python and PHP scriptwriting for IVR and AGI implementation on Asterisk. I have a team for support and further development. My expertise includes: - Ai Voice Agent build and operations multi tenant platform. - Linux - Hosting Systems Administration & Monitoring - Kubernaties, IoT tech stack - Design and implementation of High-Performance SIP SBC - DevOps CI/CD - Service Optimisation - Security Hardening - VoIP, Asterisk, SMS, Dongle, and FreePBX installation, configuration, and maintenance - WebRTC SIP Phone - Infrastructure Planning - Disaster Recovery - Shell Scripting - Capacity planning, application delivery planning - Network Troubleshoot, Spanning Tree, PVST, RSTP, HSRP, RIP, BGP, EGRP, IGRP, MPLS - SAN Troubleshoot - GlusterFS, CEPH - NFS, SMB, ISCSI, SMTP - Linux performance tuning - MySQL, Oracle DB performance tuning - Laravel web application development - Web Security, Web benchmark, best practice - IPTV, Live streaming, VOD, FFmpeg - Raspberry Pi Please let me know if you have any questions or require further information. less -
Hire maxscender
maxscender maxscender
$100 USD / hour
🟣 SOFTWARE ENGINEERING 🟢 MACHINE LEARNING 🟠AITunisiaI’m a Software Engineer with a Ph.D. in Computer Science, specializing in system architecture, machine learning/AI, advanced web scraping, and algorithmic trading. With expertise ranging from high-level web services (Python) to low-level system programming (C/C++), I help clients collect complex data, build reliable...I’m a Software Engineer with a Ph.D. in Computer Science, specializing in system architecture, machine learning/AI, advanced web scraping, and algorithmic trading. With expertise ranging from high-level web services (Python) to low-level system programming (C/C++), I help clients collect complex data, build reliable backend systems, and develop intelligent models that deliver measurable results. What I Can Do: 🟣 SOFTWARE ENGINEERING & ARCHITECTURE * Python, C, C++, C#, Java, PHP, Javascript, Rust, Go. * Desktop Applications Development. * Raspberry Pi programming, hardware-software integration, and edge-device deployment. * Backend Development: REST/GraphQL APIs, authentication/authorization, role-based access. 🔴 REVERSE ENGINEERING & LOW-LEVEL SYSTEMS * Reverse engineering: binary analysis, disassembly, decompilation, protocol reverse engineering * Static & dynamic analysis: IDA Pro, Ghidra, x64dbg, OllyDbg * Malware analysis, unpacking, and code inspection * Memory forensics and runtime debugging 🟠ALGORITHMIC TRADING & QUANTITATIVE DEV * Development of custom MetaTrader (MT5) Expert Advisors (EAs), custom indicators, and automated trading bots (MQL5). * Bridging Python-based ML/DL forecasting models with MT5 via APIs/sockets. 🟢 MACHINE LEARNING / DEEP LEARNING / AI * End-to-End ML Pipelines: Data collection → preprocessing → training → evaluation → deployment. * Ecosystems & Tools: PyTorch, TensorFlow, scikit-learn, and MATLAB for academic/engineering simulations. * Deep Learning & NLP: CNNs, RNNs/LSTMs, Transformers, text cleaning, embeddings, RAG with vector databases. * Time Series & Forecasting: Feature engineering, backtesting, and model comparison (highly applicable to financial data). 🟡 WEB SCRAPING & DATA EXTRACTION * Frameworks: Python with Scrapy, Selenium, Playwright, Seleniumbase, Pydoll, requests, curl_cff. * Anti-Bot & CAPTCHA: Bypassing complex modern web protections. 🔵 DATA ANALYSIS, ENGINEERING & VISUALIZATION * Data Engineering: ETL/ELT pipelines, batch/stream workflows, data modeling (star schema), warehousing basics. * Data Analysis: Exploratory analysis (EDA), KPI definition, insights, trend/segment analysis. * Data Cleaning & Preprocessing: Missing values, outliers, normalization, deduplication, validation rules. * Database Design: PostgreSQL/MySQL/SQLite, MongoDB; indexing, migrations, and optimization. less -
Hire rafaelfozzy
I create AV projects, program AV systems (crestron, qsc, extron, biamp...). Local and remote support for AV installationsI create AV projects, program AV systems (crestron, qsc, extron, biamp...). Local and remote support for AV installations less -
Hire itazedo
I am a network administrator with a degree in Information Security, bringing nearly 20 years of experience in computer networks, virtualized environments, and Linux systems. My expertise spans a wide range of technologies, from VPN and security configurations to network virtualization, cloud infrastructure, and IT...I am a network administrator with a degree in Information Security, bringing nearly 20 years of experience in computer networks, virtualized environments, and Linux systems. My expertise spans a wide range of technologies, from VPN and security configurations to network virtualization, cloud infrastructure, and IT service operations. My Specialties: Designing and implementing medium and large-scale enterprise networks to ensure scalability, security, and optimal performance. Expertise in pfSense and OPNsense for firewall, VPN, L2TP, IPSec, DHCP, DNS, NAT, and other network services. Proficient in WireGuard VPN for secure, high-performance connections in diverse environments. In-depth knowledge of XCP-NG and Proxmox VE for virtualization, container management, and cloud infrastructure. Extensive experience with Oracle Linux, ensuring stable and secure enterprise Linux environments. Skilled in FreePBX (VOIP) and IVR (Interactive Voice Response) solutions for scalable voice services. Advanced understanding of switching technologies, including VLANs, TRUNK, LACP, and other essential network protocols. Integration and management of Kimai time tracking system for accurate activity billing and productivity monitoring. Implementation and customization of Zammad helpdesk system for streamlined support and ticketing workflows. Configuration and deployment of Ubiquiti equipment (UniFi, EdgeRouter, airMAX, UISP) for reliable wireless backhauls, point-to-point links, and enterprise-grade Wi-Fi solutions. Skills and Hands-on Experience: Proficient in working with Cisco routers and switches, ensuring high availability and network optimization. Experience with Synology NAS for network storage solutions. Expertise in AWS Lightsail, including cost optimization for EC2, Route53, RDS, VPC, Gateway, Load Balancer, and VPN setup. Oracle Cloud Infrastructure (OCI): Deployment and management of compute instances, VCNs, subnets, Internet Gateways, routing, security lists, and firewall policies, enabling secure, high-performance cloud-based infrastructures. Strong capabilities in network documentation to provide detailed, accurate infrastructure layouts for management and troubleshooting. less -
Hire jkaranm
I specialize in outsourcing and digital marketing and I am committed to improving your business's efficiency and effectiveness. While I cannot please everyone, I have built a strong reputation in the industry over the years. I speak fluent English and Filipino (Cebuano and Tagalog). As an experienced BPO professional...I specialize in outsourcing and digital marketing and I am committed to improving your business's efficiency and effectiveness. While I cannot please everyone, I have built a strong reputation in the industry over the years. I speak fluent English and Filipino (Cebuano and Tagalog). As an experienced BPO professional and a Bachelor's degree of Business Administration, I—along with my small, close team—have worked with numerous companies worldwide. A trusted Preferred Freelancer for 10+ years, I offer a diverse service suite including (but not limited): Administration & Finance: Virtual Assistance, Bookkeeping, Basic Accounting, Data Entry/Processing and more. Growth & Strategy: Lead Mining, Data Enrichment, Data Management, Telemarketing, and more. Creative & Content: Article Writing, Proofreading/Editing, Graphic & Logo Design, and Branding. Technical & Support: Customer Service/Support, Technical Support, Research and more. I was featured on Freelancer a few years ago and have maintained my Preferred Freelancer status for over a decade while remaining grounded and low-profile. If our qualifications match your needs, please consider our small company for your next project. less -
Hire ahsan8601
Hi, I'm Ahsan, a VoIP and Unified Communications expert based in Pakistan. I lead a team of 4 specialists, and for the past 7 years we've been providing backend support to multiple VOIP provider businesses—handling everything from setup and security to ongoing maintenance. I specialize in Avaya solutions, working...Hi, I'm Ahsan, a VoIP and Unified Communications expert based in Pakistan. I lead a team of 4 specialists, and for the past 7 years we've been providing backend support to multiple VOIP provider businesses—handling everything from setup and security to ongoing maintenance. I specialize in Avaya solutions, working directly with Avaya business partners globally offering comprehensive support for: ✅ Avaya Communication Manager (CM) ✅ System Manager (SM) ✅ Session Border Controller for Enterprise (SBCE) ✅ Orchestration Designer (Avaya OD) ✅ SIP trunking ( Telnyx, Twilio, Voxtelesys and Voip.ms) ✅ System integration and remote troubleshooting Beyond Avaya, I also have deep expertise in open-source VoIP technologies, including: ✅ Asterisk / FreePBX, 3CX & Vital PBX installation and customization ✅ SIP debugging, call routing, and diagnostics ✅ AI Voice Assistant for your Business Telephony ✅ AI Chat Assistant for your Business Telephony My skillset includes robust networking knowledge: ✅ VPNs (IPSec, WireGuard, OpenVPN and site-to-site tunnels) ✅ Firewall Configurations ( Fortinet, pfSense, OPNsense & OpenWRT) Whether you're building a new VoIP system, need ongoing support, or are facing complex SIP/NAT or SBC issues, I can help you build and maintain a secure, scalable, and stable communication platform. Let me be your remote VoIP partner — reliable, efficient, and available when you need it most. less -
Hire AwaisChaudhry
ZAWN Tech is a full-service IT & Engineering company founded in 2014, delivering complete digital and hardware solutions for startups and enterprises worldwide. We operate with an in-house team of specialized developers, designers, marketers, and engineers across multiple domains, allowing us to handle both software...ZAWN Tech is a full-service IT & Engineering company founded in 2014, delivering complete digital and hardware solutions for startups and enterprises worldwide. We operate with an in-house team of specialized developers, designers, marketers, and engineers across multiple domains, allowing us to handle both software and embedded engineering projects with proven real-world experience. Our certified team combines deep technical knowledge with hands-on delivery to build fast, secure, scalable, and user-friendly solutions. Core Expertise Web & SaaS Development: Full-stack development using PHP, WordPress, Python, React, Node.js, Angular.js, Electron.js, Laravel, Django, and Next.js. Integration with Odoo, Bubble.io, Zoho, Webflow, and custom business platforms. Website Design & UI/UX: Website Design, Web Design, Web Development, Graphic Design, Logo Design, User Interface (UI) Design, User Experience (UX) Design, Wireframing, Prototyping, Responsive Design, HTML/CSS, Squarespace, Landing Pages, and conversion-focused business websites. eCommerce: Shopify, WooCommerce, Magento, Amazon, and custom marketplace platforms with payment, shipping, ERP, and inventory integrations. Blockchain: Metaverse, Web3, NFTs, NFT Games, Smart Contracts, Arbitrage & Sniper Bots, DEX / DApp Development (Ethereum, BSC, Polygon, Solana, WAX). Mobile Apps: Native and cross-platform development (Flutter, React Native, Android, iOS). AI & Computer Vision: Machine Learning, Chatbots, GPT integrations, TensorFlow, OpenCV, OCR systems, automation, and intelligent business solutions. Game Development: Unity 3D, Unreal Engine, WebGL, multiplayer games, blockchain gaming, and AR/VR experiences. Hardware & IoT (In-house Team): Electronics, Microcontrollers, PLC & SCADA, Electrical Engineering, Embedded Systems, Automation, Arduino, Raspberry Pi, ESP32, MATLAB, robotics, and control systems. Trading EA, Bots & Automation: MQL, MT4/MT5, TradingView, Binance, IBKR, algorithmic trading systems, indicators, EAs, and trading bots. Enterprise & Business Solutions: CRM systems, ERP platforms, Odoo customization, Salesforce, Microsoft Dynamics 365, SharePoint, Power BI, Power Apps, workflow automation, business process optimization, reporting dashboards, inventory management, data processing, business intelligence, and enterprise software integrations. Digital Marketing & SEO: Search Engine Optimization (SEO), Technical SEO, Keyword Research, Content Strategy, Social Media Marketing, Email Marketing, Website Optimization, Analytics, Brand Management, Content Creation, and digital growth strategies. Customer Support : Customer Support, Customer Service, Virtual Assistant Services, Call Center Operations, Telemarketing, VoIP Solutions, Asterisk, PBX , SIP With 300+ recommendations and over a decade of experience, we turn complex ideas into reliable, production-ready solutions delivered with clear communication, transparent processes, and long-term support. less -
Hire anandinfraveo
I build and fix things for a living, web apps, e-commerce stores, servers, and the automation that ties it together. Recent work spans WordPress and Shopify builds and fixes, PHP/Laravel apps, server hardening and migrations (Plesk, pfSense, ISPConfig), and AI-powered workflow automation (n8n, Claude/OpenAI APIs). If...I build and fix things for a living, web apps, e-commerce stores, servers, and the automation that ties it together. Recent work spans WordPress and Shopify builds and fixes, PHP/Laravel apps, server hardening and migrations (Plesk, pfSense, ISPConfig), and AI-powered workflow automation (n8n, Claude/OpenAI APIs). If it runs on a server or lives on the web, I can probably help. 4.9 stars across 38 reviews, 98% job completion, 6+ years on this platform. Message me with what you need built or fixed. less
