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I help companies build latency-sensitive audio systems and performance-critical native applications for embedded, desktop, and mobile platforms. My core expertise is turning complex low-level requirements into reliable and scalable architectures and implementations. Project Highlights: 1. Roc Streaming — co-founded and maintain an open-source real-time audio streaming ecosystem. 2. ViveSound audio engine — co-founded ViveSound and implemented commercial engine for OS-level audio processing injection. 3. Internet audio streaming — built a streaming daemon for embedded Linux with guaranteed 40 ms Internet latency, forward error correction and packet loss concealment. 4. Airborne audio synchronization — built acoustic-signature-based synchronization, aligning network playback to over-the-air audio within 1-2 ms. 5. Distributed playback sync — built multi-receiver network playback synchronization with sub-millisecond precision over high-jitter Internet connection.

Telecommunications and Network Engineer with over 10 years of practical experience in ISP operations, FTTH networks, GPON systems, MikroTik RouterOS, Linux servers, DNS, hosting, and email infrastructure. My background comes from working in real ISP environments where network stability, customer connectivity, and service availability are part of daily operations. I currently work with an FTTH network serving more than 500 active subscribers and manage the systems required to keep services running reliably. I am currently involved in the operation and development of the UFibers platform, supporting ISP infrastructure, customer provisioning systems, billing integrations, network operations, DNS services, hosting environments, and customer support systems. In addition to network operations, I actively manage production hosting and email environments for UFibers, including domain management, DNS administration, Microsoft 365, email routing, cPanel hosting, SSL certificates, WordPress hosting, email accounts, aliases, forwarding rules, SPF, DKIM, DMARC, MX records, and troubleshooting email delivery issues. This hands-on experience comes from operating live business systems and customer-facing services rather than lab environments. Recently received a 5-star Upwork review for DNS, Email Infrastructure, and Technical Operations support, with client feedback highlighting quality, problem-solving, and technical expertise. My daily work includes customer provisioning, PPPoE service management, network troubleshooting, outage investigation, OLT administration, DNS management, email infrastructure support, hosting administration, and maintaining operational systems used by both customers and support teams. I have hands-on experience with ZTE C620 and ZTE C650 GPON OLT platforms, MikroTik routing environments, SmartOLT automation, Blesta billing systems, Linux servers, and customer service provisioning workflows. Technical Experience • MikroTik RouterOS Administration • ZTE C620 and ZTE C650 GPON OLT Management • ONU Provisioning and Troubleshooting • SmartOLT Deployment and Administration • Blesta Billing and Service Automation • PPPoE Services and Subscriber Management • VLAN Configuration, Routing, and Switching • VPN Deployment and WAN Failover Solutions • ISP Operations and Customer Provisioning • Network Monitoring and Troubleshooting • Linux Server Administration (Ubuntu) • VPS and Hosting Management • cPanel and WHM Administration • DNS Configuration and Troubleshooting • Cloudflare Administration • SSL Certificate Installation and Renewal • Google Workspace Administration • Microsoft 365 Administration • Email Infrastructure Support • SPF, DKIM, DMARC, MX, and DNS Records • WordPress Migration and Troubleshooting • Website and Email Migrations • API Integrations and Service Automation Recent Work • Managing and maintaining an FTTH ISP network serving more than 500 subscribers. • Operating ZTE GPON infrastructure using C620 and C650 OLT systems. • Managing MikroTik routing environments, subscriber authentication, and service delivery. • Integrating SmartOLT with Blesta to automate provisioning and service management processes. • Supporting the UFibers ISP platform, including customer systems, billing integrations, hosting infrastructure, and network operations. • Troubleshooting DNS, SPF, DKIM, DMARC, MX, and email delivery issues for hosted domains. • Managing Linux servers, VPS infrastructure, hosting environments, and customer-facing services. • Performing website, hosting, DNS, and email migrations while minimizing service interruption. I enjoy troubleshooting technical problems and finding the root cause rather than applying temporary fixes. My focus is on building solutions that are stable, practical, and suitable for real production environments. Available for MikroTik, GPON, SmartOLT, Blesta, Linux administration, DNS management, email infrastructure, hosting support, WordPress migrations, ISP operations, and network troubleshooting projects.

Is your digital infrastructure secure against today's sophisticated threats? I specialize in identifying and mitigating security vulnerabilities before they can be exploited. With a focus on real-world penetration testing and comprehensive malware cleanup, I ensure your systems are robust and resilient. 🛠️ Services I Provide: Web & API Penetration Testing: Combining manual and automated techniques to uncover vulnerabilities. WordPress Security & Malware Removal: Protecting your site from threats and ensuring smooth operation. Network & Server Vulnerability Scanning: Utilizing tools like OpenVAS and Wireshark for thorough assessments. Compliance-Oriented Security Assessments: Ensuring adherence to standards such as PCI-DSS and ISO 27001. Email Setup & Security Hardening: Securing communications with platforms like Gmail, Hostinger, and SendGrid. 📈 Highlights: 4+ Years Experience | CEH Certified 20+ Projects Delivered with 5-Star Ratings Expertise in OWASP Top 10, CVSS, and MITRE ATT&CK Post-audit Guidance and Remediation Support 100% Confidentiality | NDA-Friendly I am committed to delivering high-quality security solutions tailored to your needs. Let's work together to fortify your digital presence.

I'm a proficient Linux Server Administrator and PHP/Python programmer with over 15 years of experience. My expertise extends to web hosting, cloud, cluster, DevOps and blockchain technologies. Throughout my career, I have worked with numerous hosting providers and have gained extensive experience in addressing vulnerabilities, viruses, spam detection, server optimization, and server software optimization. As a DevOps professional, I collaborate with various companies with developer teams ranging from 1 to 50. I have extensive experience in automating infrastructure, implementing CI/CD pipelines, managing cloud environments (AWS, Azure, GCP), and ensuring system reliability and scalability. Below are my general skills: * Blockchain platforms: Bitcoin, Tron (TRX, USDT), Ethereum (ETH, USDT, USDC), XRP (full node & API) * DevOps: GitLab, GitHub, Azure DevOps. Project support, CI/CD * Optimization of Google Pagespeed, Magento, WordPress, ODOO, Mautic, Drupal, Joomla, Bitrix, Bitrix24, and other CMS * Operating Systems: Debian, Ubuntu, CentOS, Rocky Linux, AlmaLinux, RedHat, CloudLinux, Gentoo, FreeBSD (administration, configuration, audit, optimization) * Software Configuration Management: Salt, Ansible * Web servers: Nginx, Apache, LiteSpeed (installation, configuration, optimization) * Database servers: MySQL, PostgreSQL, MariaDB, Percona, MongoDB (installation, configuration, optimization, profiling, cluster creation) * Mail servers: Exim, Postfix, Sendmail, Zimbra, Qmail, Dovecot + Spamassassin, ClamAV * Webhosting Administration Panels: cPanel / WHM, Plesk, aaPanel, Proxmox, CyberPanel, VestaCP, HestiaCP, ISPManager, Billmanager, ISPConfig, DirectAdmin, Webmin * Monitoring: Zabbix, Wazuh, Munin, Nagios, Icinga * Amazon: AWS setup or Amazon tools * Virtualization: Proxmox, OpenVZ, XEN, KVM, VMWare, VirtualBox, Docker * Load balancing via: HAproxy, Nginx, Pingora, ProxySQL, PowerDNS, BIND, Route53, Alibaba Cloud DNS * System Backup and Restore automation * Removal of viruses and malicious software * Network services: DNS (Bind, PowerDNS), VPN (MPD, PPTPD, OpenVPN), firewalls (iptables, ipfw), file server (samba3/4), proxies (Squid, 3proxy, Privoxy, Nginx), DRBD, Ceph, GlusterFS, lsyncd * FTP: Vsftp, Pureftp, Proftpd Thank you for viewing!

☘ TOP RATED · 100% Job Success Senior System / DevOps Engineer with 13+ years of experience, specializing in the hosting industry, cloud infrastructure, and automation on AWS, GCP, and Azure. AWS Certified Solutions Architect – Associate. Core expertise: • Cloud & Infrastructure — AWS (EC2, VPC, RDS, Lambda, CloudFront, Route53, ELB, S3, ECS/ECR), GCP, Azure • Infrastructure as Code — CloudFormation, Terraform, Ansible • CI/CD & Automation — Jenkins, GitHub Actions, Bash, Python • Containers — Docker, Docker Compose, Kubernetes • Hosting & Web Stack — WordPress, Node.js, Ruby on Rails, .NET Framework / .NET Core Top projects: ☘ AWS Migration & Modernization — Migrated a production workload from AWS Lightsail to a multi-region AWS architecture (VPC, EC2 Auto Scaling, RDS Serverless v2, Route53, CloudFront, ELB, S3, Lambda). Fully managed as code with CloudFormation and automated via GitHub Actions and Python. ☘ Jitsi Video Platform — Provisioned, installed, and configured a production Jitsi deployment using Terraform and Ansible. ☘ Multi-Stack Web Hosting on OVH Cloud — Built, deployed, and managed JavaScript, Node.js, WordPress, and Ruby on Rails sites using Jenkins and Docker Compose. ☘ .NET on AWS — Dockerized and deployed .NET Framework and .NET Core APIs to AWS ECS/ECR with Jenkins and GitHub pipelines. I'm responsive throughout the day and happy to provide ongoing support after a project wraps up. Feel free to reach out any time — I'd be glad to help.

𝗔𝗿𝗲 𝘆𝗼𝘂 𝗹𝗼𝗼𝗸𝗶𝗻𝗴 𝗳𝗼𝗿 𝗮 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗵𝗼 𝗰𝗮𝗻 𝘁𝘂𝗿𝗻 𝘆𝗼𝘂𝗿 𝗶𝗱𝗲𝗮 𝗶𝗻𝘁𝗼 𝗮 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲, 𝗵𝗶𝗴𝗵-𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝘄𝗲𝗯 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻? 👉 Schedule a free 40-minute consultation, and let’s plan the best technical approach I help startups and businesses build high-performance web applications using modern technologies like 𝗠𝗘𝗥𝗡, 𝗟𝗮𝗿𝗮𝘃𝗲𝗹, 𝗪𝗼𝗿𝗱𝗣𝗿𝗲𝘀𝘀, 𝗮𝗻𝗱 𝗣𝗛𝗣, from MVP development to full-scale SaaS platforms. I specialize in 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗳𝗼𝗿 𝗦𝗮𝗮𝗦, 𝘀𝘁𝗮𝗿𝘁𝘂𝗽𝘀, 𝗮𝗻𝗱 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝘄𝗲𝗯 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀. From 𝗽𝗿𝗼𝘁𝗼𝘁𝘆𝗽𝗶𝗻𝗴 𝘁𝗼 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗱𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁, I design and build applications with strong backend architecture, scalable infrastructure, and intuitive user experiences. I frequently work with 𝗠𝗩𝗣 𝗯𝘂𝗶𝗹𝗱𝘀 𝗮𝗻𝗱 𝗲𝗮𝗿𝗹𝘆-𝘀𝘁𝗮𝗴𝗲 𝘀𝘁𝗮𝗿𝘁𝘂𝗽𝘀, ensuring the product is built on a solid technical foundation that scales as the business grows. Depending on the project, I work as a 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿, 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿, 𝗼𝗿 𝗦𝗮𝗮𝗦 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁, and collaborate with trusted specialists when needed. 🎯 𝗙𝗿𝗲𝗲 𝟰𝟬-𝗠𝗶𝗻𝘂𝘁𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗖𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 • Review your current architecture • Refine your tech stack • Plan a clear MVP development roadmap • Identify scalability risks early I regularly work on MVP builds and early-stage products as a SaaS Developer, with strong focus on solid backend foundations, sensible scaling paths & avoiding short-lived prototypes. Based on scope and timing, I work hands-on as a Full Stack Developer, SaaS Developer & Backend Developer, and when useful, involve speciI regularly alist from my team 💻 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗦𝘁𝗮𝗰𝗸 🔧 Backend: Node.js, Express.js, Next.js, PHP, Laravel, Python 🎨 Frontend: React.js, TypeScript, JavaScript, Bootstrap 🗄️ Databases: MongoDB, MySQL, PostgreSQL, Firebase 🔗 API Development: REST APIs, GraphQL ⚙️ DevOps & Deployment: AWS, DigitalOcean, Vercel 🧰 Tools: Git, GitHub, GitLab, Bitbucket, VS Code 📋 Project Management: JIRA, Trello, ClickUp 🔌 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲𝗱 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: • Payment Gateways: Stripe, Razorpay, Paytm, Apple Pay • Communication APIs: Twilio, SendGrid, MessageBird 🏆𝗠𝘆 𝗡𝗼𝘁𝗮𝗯𝗹𝗲 𝗖𝗼𝗻𝘁𝗿𝗶𝗯𝘂𝘁𝗶𝗼𝗻𝘀: 💡𝗕𝘂𝗶𝗹𝘁 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗦𝗮𝗮𝗦 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝘀: Developed a multi-tenant SaaS platform generating $100K+ revenue 📍𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗲𝗱 𝗚𝗜𝗦 𝗮𝗻𝗱 𝗟𝗟𝗠 𝗳𝗼𝗿 𝗨𝗿𝗯𝗮𝗻 𝗣𝗹𝗮𝗻𝗻𝗶𝗻𝗴: Developed LLM-powered GIS solutions for urban planning & smart cities (Used by Abu Dhabi Government & AECOM). 📲𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗱 𝗠𝘂𝗹𝘁𝗶-𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀: Built React Native applications that increased user engagement by 40% 🗺️𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗲𝗱 𝗖𝘂𝘀𝘁𝗼𝗺 𝗤𝗚𝗜𝗦 𝗣𝗹𝘂𝗴𝗶𝗻𝘀 & 𝗘𝗦𝗥𝗜 𝗔𝗱𝗱𝗶𝗻𝘀: Developed QGIS & ESRI Addins to automate workflows, reducing project turnaround time by 30% ⚙️𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗲𝗱 𝗚𝗜𝗦 𝗤𝗔 𝗣𝗿𝗼𝗰𝗲𝘀𝘀𝗲𝘀 𝗨𝘀𝗶𝗻𝗴 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴: Automated GIS data QA, cutting manual work by 60% 🚀𝗖𝗜/𝗖𝗗 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄𝘀 𝗳𝗼𝗿 𝗙𝗮𝘀𝘁𝗲𝗿 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁: Designed zero-downtime deployment strategies, reducing release times by 50% 💼 𝗪𝗵𝘆 𝗣𝗮𝗿𝘁𝗻𝗲𝗿 𝗪𝗶𝘁𝗵 𝗠𝗲 𝗮𝘀 𝗮 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿? 🔗 Clear Communication throughout the project 🔗 Commitment to clean, scalable code and high standards 🔗 Flexibility to meet deadlines and adapt to project needs 🚀 𝗛𝗼𝘄 𝗜 𝗠𝗮𝗸𝗲 𝗮 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝗰𝗲 🌐 𝖲𝗒𝗌𝗍𝖾𝗆𝖺𝗍𝗂𝖼 𝖠𝗉𝗉𝗋𝗈𝖺𝖼𝗁 𝖿𝗋𝗈𝗆 𝗉𝗅𝖺𝗇𝗇𝗂𝗇𝗀 𝗍𝗈 𝖽𝖾𝗉𝗅𝗈𝗒𝗆𝖾𝗇𝗍 🌐𝖲𝖼𝖺𝗅𝖺𝖻𝗅𝖾 𝖲𝗈𝗅𝗎𝗍𝗂𝗈𝗇𝗌 𝖿𝗈𝗋 𝖿𝗎𝗍𝗎𝗋𝖾 𝗀𝗋𝗈𝗐𝗍𝗁 🌐𝖢𝗈𝗅𝗅𝖺𝖻𝗈𝗋𝖺𝗍𝗂𝗏𝖾 𝗆𝗂𝗇𝖽𝗌𝖾𝗍, 𝗈𝖿𝖿𝖾𝗋𝗂𝗇𝗀 𝗉𝗋𝗈𝖺𝖼𝗍𝗂𝗏𝖾 𝖿𝖾𝖾𝖽𝖻𝖺𝖼𝗄 🌐𝖱𝖾𝗌𝗎𝗅𝗍𝗌-𝖮𝗋𝗂𝖾𝗇𝗍𝖾𝖽, 𝖾𝗇𝗌𝗎𝗋𝗂𝗇𝗀 𝗏𝖺𝗅𝗎𝖾 𝗐𝗂𝗍𝗁 𝖾𝗏𝖾𝗋𝗒 𝖿𝖾𝖺𝗍𝗎𝗋𝖾 📞 𝖫𝖾𝗍’𝗌 𝖳𝖺𝗅𝗄! R𝖾𝖺𝖼𝗁 𝗈𝗎𝗍 𝗍𝗈 𝖽𝗂𝗌𝖼𝗎𝗌𝗌 𝗁𝗈𝗐 𝖨 𝖼𝖺𝗇 𝗁𝖾𝗅𝗉 𝖻𝗋𝗂𝗇𝗀 𝗒𝗈𝗎𝗋 𝗉𝗋𝗈𝗃𝖾𝖼𝗍 𝗍𝗈 𝗅𝗂𝖿𝖾 𝗐𝗂𝗍𝗁 𝗍𝗈𝗉-𝗇𝗈𝗍𝖼𝗁 𝖥𝗎𝗅𝗅 𝖲𝗍𝖺𝖼𝗄 𝖣𝖾𝗏𝖾𝗅𝗈𝗉𝗆𝖾𝗇𝗍 𝖾𝗑𝗉𝖾𝗋𝗍𝗂𝗌𝖾 𝖺𝗇𝖽 𝗈𝗇𝗀𝗈𝗂𝗇𝗀 𝗌𝗎𝗉𝗉𝗈𝗋𝗍. Keywords: #LaravelDeveloper, #LaravelExperts, #PHPDeveloper, #LaravelFramework, #CustomPHPApplications, #PHPWebDeveloper, #WordPressCustomDeveloper, #CorePHPDeveloper, #LaravelWebApps, #React & Node.js, #ReactDeveloper, #NodejsDeveloper, #ReactWebDeveloper, #NodeJSEngineering, #Web Development, #WebExperts, #ResponsiveWebDesign, #CustomWebApplications, #WebAppDeveloper, #Full Stack Development, #FullStackDeveloper, #API Integration/Development, #APIIntegration, #CustomAPIDeveloper, #RESTfulAPI, #GraphQLDevelopment, #LaravelReactFullStack, #NodePHPAPIs, #FullStackAPIIntegration