Asterisk PBX Developers para contratar
Mostrando 38 resultados
Freelancers patrocinados
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Contratar abusayed2004
abusayed2004 abusayed2004
$50 USD / hora
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. menos -
Contratar maxscender
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...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. menos -
Contratar nolk
Administración de redes, Linux, Amazon Web Services, Administración de sistemas, Arquitectura de softwareFreelance engineer specializing in VoIP solutions, DevOps, networking, and virtualization. Experienced with Asterisk, FreeSwitch, OpenSIPS, Linux/Unix/BSD systems, and modern infrastructure. CCNP, VCP, and CKA certified, with strong skills in C/C++, Python, and shell scripting. Known for excellent troubleshooting,...Freelance engineer specializing in VoIP solutions, DevOps, networking, and virtualization. Experienced with Asterisk, FreeSwitch, OpenSIPS, Linux/Unix/BSD systems, and modern infrastructure. CCNP, VCP, and CKA certified, with strong skills in C/C++, Python, and shell scripting. Known for excellent troubleshooting, reliability, and clear communication. menos -
Contratar 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. menos -
Contratar SmartCodeDev
SmartCodeDev SmartCodeDev
$30 USD / hora
AI Automation/Agent/MCP | SEO/GEO/AEO | Full-StackTanzania, United Republic ofSmart Solution is a software engineering and AI automation company building production-ready applications, intelligent AI agents, workflow automation systems, and AI-powered business solutions. We combine modern AI technologies with strong full-stack engineering to help businesses automate operations, connect systems,...Smart Solution is a software engineering and AI automation company building production-ready applications, intelligent AI agents, workflow automation systems, and AI-powered business solutions. We combine modern AI technologies with strong full-stack engineering to help businesses automate operations, connect systems, and move from traditional software workflows toward intelligent, AI-enabled processes. What We Build 1. AI Agents & Agentic Systems - Autonomous and semi-autonomous AI agents - Tool-calling and multi-step agent workflows - Agent orchestration and task management - Human-in-the-loop systems - AI agents connected to APIs, databases, SaaS, and business systems - Monitoring, logging, verification, and error recovery 2. MCP & AI Tool Integration - MCP servers and integrations - Custom AI tools and tool-calling systems - CRM, ERP, database, email, and SaaS integrations - Secure permissions and approval workflows - AI-accessible business operations 3. AI Automation - End-to-end business workflow automation - AI-powered data processing and document processing - Automated research, reporting, and customer operations - API and browser-based automation - Background workers, queues, schedulers, and scalable automation infrastructure 4. Browser Automation & Intelligent Bots - Playwright-based automation - Browser agents and complex web workflows - Automated data collection and processing - Concurrent automation systems - Task queues, worker architectures, sessions, and account management - Execution monitoring and optimization 5. LLM Applications - OpenAI and other LLM integrations - RAG applications and knowledge bases - Semantic search, embeddings, and vector databases - Structured AI outputs - AI evaluation and validation - AI-powered SaaS platforms 6. GEO & AEO - Generative Engine Optimization - Answer Engine Optimization - AI-search visibility and brand/entity visibility - AI-focused content and knowledge architecture - AI visibility monitoring and reporting 7. Full-Stack Development - React / Next.js - Node.js / TypeScript - Python / FastAPI - REST / GraphQL APIs - PostgreSQL and other databases - Docker, cloud infrastructure, and deployment - SaaS platforms, admin dashboards, and business applications Our Approach We build systems for real production environments—not just prototypes. Architecture → Integration → Automation → Testing → Monitoring → Optimization Our solutions are designed to scale from proof of concept to production workloads while maintaining reliability, security, performance, and maintainability. Why Smart Solution The future of software is the combination of Software Engineering + AI + Automation + Agents + Business Integration. Smart Solution helps businesses turn complex ideas into practical, scalable systems—from AI agents and MCP integrations to intelligent automation platforms, browser automation, AI-powered SaaS, and complete full-stack applications. menos -
Contratar udayarpandey2022
udayarpandey2022 udayarpandey2022
$75 USD / hora
DevOps Engineer | K8s, Docker, Terraform, CI/CDNepalDevOps Engineer specializing in cloud infrastructure automation, container orchestration, and CI/CD pipeline design across AWS and Azure. Core DevOps stack: Kubernetes, Docker, Terraform, Ansible, Jenkins, GitHub Actions, AWS (EC2, EKS, S3, IAM), Azure (AKS, VMs, DevOps Pipelines), Prometheus, Grafana, CEPH storage,...DevOps Engineer specializing in cloud infrastructure automation, container orchestration, and CI/CD pipeline design across AWS and Azure. Core DevOps stack: Kubernetes, Docker, Terraform, Ansible, Jenkins, GitHub Actions, AWS (EC2, EKS, S3, IAM), Azure (AKS, VMs, DevOps Pipelines), Prometheus, Grafana, CEPH storage, Linux, Bash/Python scripting (expert level). Beyond core DevOps, I bring deep infrastructure and security experience: • Virtualization: VMware, Proxmox, KVM • VoIP/Telephony: Asterisk (PBX design, deployment, troubleshooting) • DNS & DNS Security: architecture, hardening, DNSSEC, threat mitigation • Security: penetration testing, website/application security audits • WordPress: expert-level development, hardening, performance • End-to-end infrastructure design, monitoring, and 24/7 reliability engineering I design systems that are automated, secure, and built to scale, from provisioning through production monitoring. Ganesh D. menos -
Contratar santoshliku21
::Welcome To My Profile. :: Having 3 Objective. 1. excellent client satisfaction 2. Professional work with Quality 3. On time work deliver, NO False commitment Knowledge about: 1. configuration on Asterisk, VICIDIAL(open source), Elastix, FreePBX, Goautodial and other telephony IP-PBX servers. 2. Installation...::Welcome To My Profile. :: Having 3 Objective. 1. excellent client satisfaction 2. Professional work with Quality 3. On time work deliver, NO False commitment Knowledge about: 1. configuration on Asterisk, VICIDIAL(open source), Elastix, FreePBX, Goautodial and other telephony IP-PBX servers. 2. Installation LAMP server on Unix & Windows 3. PHP,MYSQL, SQL, RabbitMQ,codignator Multiple Asterisk Server & Cloud Solution for In Virtualization like AWS, OpenVz, Vmware, VitualBox, KVM. in asterisk Dial plan, click to call solution, voice mail, voice broadcasting, 3-way call transfer, Real-time DB integration, IVR set-up, a2billing Configuration. 6. SMTP server configuration 7. Vtiger CRM open source installation & integration with telephony opensource system. and cost-effective phone management system planning & designing & installation for Call center setup using open source. Thank You menos -
Contratar techplusintl
techplusintl techplusintl
$25 USD / hora
Full-Stack Developer | Apps, APIs, AI & AutomationPakistanI am a software developer with 490+ completed projects on Freelancer, helping businesses build, improve, and integrate software that solves real business problems. My work focuses on custom web applications, API integrations, automation, business systems, and existing application enhancements. Whether it's connecting...I am a software developer with 490+ completed projects on Freelancer, helping businesses build, improve, and integrate software that solves real business problems. My work focuses on custom web applications, API integrations, automation, business systems, and existing application enhancements. Whether it's connecting third-party services, automating repetitive workflows, fixing complex issues, or adding new features to an existing system, I focus on delivering practical, reliable solutions. What I Can Help With • API integrations and third-party services • Business automation and workflow development • CRM integrations and custom business tools • Web applications and admin dashboards • AI integrations and automation solutions • Payment gateway integrations • Data processing, reporting, and import/export tools • Bug fixing, maintenance, and feature development Technologies PHP, Classic ASP, ASP.NET, C#, Python, JavaScript, MySQL, SQL Server, WordPress, Shopify, REST APIs, Google APIs, OpenAI, Stripe, PayPal, Twilio, Make.com, n8n, Google Sheets, and other business integrations. I enjoy working on projects that involve solving technical challenges, integrating different systems, and improving existing software. I believe in clear communication, realistic timelines, and writing maintainable code that clients can continue to build upon. If you're looking for someone who can understand your requirements, troubleshoot complex issues, and deliver reliable solutions, I'd be happy to discuss your project. menos -
Contratar 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. menos -
Contratar 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. menos
