Hire the Best Computronix POSSE Specialists
Chittagong, Bangladesh
I help businesses build, automate, and scale reliable infrastructure across on-premise and cloud environments. Specialized in Proxmox, VMware, cloud infrastructure, DevOps automation, monitoring, disaster recovery, and high-availability systems. I work with startups, MSPs, SaaS companies, and enterprise environments to improve uptime, scalability, security, and operational efficiency. Over the years, I’ve designed and managed production-grade environments using Proxmox VE, Ceph, VMware, AWS, Azure, Docker, Kubernetes, Linux, and Windows Server technologies. My focus is always on delivering stable, secure, and maintainable infrastructure solutions that support long-term business growth. Core Expertise • Proxmox VE Clusters & Ceph Storage • VMware vSphere & ESXi Administration • High Availability (HA) Infrastructure • Disaster Recovery & Backup Solutions • Docker, Kubernetes & CI/CD Automation • AWS, Azure & Hybrid Cloud Deployments • Infrastructure Automation (Terraform, Ansible) • Zabbix, Grafana & Monitoring Systems • VPN, Firewall & Network Security • Linux & Windows Server Administration Services I Commonly Provide ✔ Proxmox cluster deployments & troubleshooting ✔ VMware to Proxmox migrations ✔ Ceph storage optimization & recovery ✔ Infrastructure automation & DevOps pipelines ✔ Monitoring & alerting implementations ✔ Backup & disaster recovery planning ✔ Cloud migrations & hybrid infrastructure ✔ Secure VPN & remote access solutions ✔ Performance optimization & infrastructure scaling Technologies Proxmox VE, Proxmox Backup Server, Ceph, VMware vSphere, VMware ESXi, Docker, Kubernetes, Linux, Windows Server, AWS, Azure, Terraform, Ansible, Nginx, Zabbix, Grafana, pfSense, PostgreSQL, MySQL, GitHub Actions, GitLab CI/CD, Cloudflare, Python, Bash. I value clear communication, fast response times, proactive problem-solving, and building long-term partnerships with clients. Whether you need help deploying new infrastructure, optimizing existing environments, automating workflows, or recovering from critical failures, I can help design a reliable and scalable solution tailored to your business.
- Linux System Administration
- Node.js
- System Administration
- SSL Certificate
- NGINX
- AWS Application
- Docker
- OpenVPN
- Zero Trust Architecture
- Proxmox VE
- VMware Administration
- VMware ESX Server
- PfSense
- Microsoft Azure Administration
- Windows Server
Penarth, United Kingdom
Hi, I’m Faisal—a senior VoIP, CPaaS, and communications systems architect with 25+ years of experience designing carrier-grade, high-availability, real-time communication platforms. I build, scale, secure, and modernize voice and video systems for telecom operators, SaaS platforms, AI startups, CPaaS providers, and enterprises around the world. If it involves SIP, RTP, WebRTC, LLMs, Linux, CPaaS, or real-time media at scale, I can build it, optimize it, or rescue it. 🔑 What I Specialize In ✅ VOIP Platform Architecture (FreeSWITCH / Asterisk / Kamailio) ✅ Linux System Engineering, Security, and Optimization ✅ SIP, RTP, WebRTC, STUN/TURN, NAT Traversal ✅ Real-Time Communication (Voice & Video) at Scale ✅ AI-Powered Voice Bots, Transcription, and TTS Integration ✅ Troubleshooting SIP Call Flows, Packet Capture & Analysis (Wireshark/sngrep) 🔑 What I Do: VOIP & Real-Time Communication Architecture; FreeSWITCH / Asterisk / Kamailio / OpenSIPS platform design Carrier-grade SIP routing, NAT traversal, media handling High-availability + auto-scaling VoIP infrastructures Multi-tenant PBX, call center, and UCaaS platform development CPaaS Development & Integrations; Twilio, Plivo, Telnyx, Vonage, MessageBird Build SMS/voice/WhatsApp automation & workflows Replace/optimize expensive CPaaS architecture with self-hosted systems AI Voicebots, LLM Automation & Speech Tech (AI Integrations); Real-time voicebots using Whisper, Riva, Deepgram, Azure, ElevenLabs SIP → AI → SIP conversational call flows Real-time transcription + diarization + TTS pipelines LLM-powered call automation (ChatGPT Voice, RAG, custom models) WebRTC Application Engineering; Build custom WebRTC softphones (browser, React, Flutter) WebRTC signaling integration (SIP, custom protocols) TURN/STUN/ICE infrastructure setup QoS optimization for video/voice over WebRTC SIP Security, Hardening & Compliance; Anti-fraud protection, SIP scanning mitigation Fail2Ban, firewall tuning, SRTP/DTLS encryption STIR/SHAKEN setup & routing compliance Carrier-grade security audits & penetration checks DevOps for Real-Time Media Platforms; Docker/Kubernetes containerized VoIP workloads Auto-scaling SIP clusters, distributed media servers Monitoring with Netdata, Homer, Prometheus, Grafana CI/CD automation for telecom systems Outbound Dialers & Contact Center Systems; Predictive/preview dialers (custom-built or integrated) CRM telephony integration (HubSpot, Salesforce, Zoho) IVR, call routing, analytics dashboards Telephony Cost Optimization & Migration; Reduce Twilio/Telnyx billing by 40–70% Move from hosted CPaaS → self-hosted SIP infrastructure SIP trunk cost optimization strategies Emergency VoIP Platform Rescue; SIP call failure resolution One-way/no-audio fixes NAT, RTP, firewall, WebRTC troubleshooting 24–48h critical system recovery 🛠️ Tools & Stack VOIP Engines: FreeSWITCH, Asterisk, Kamailio, OpenSIPS Linux Distros: Ubuntu, Debian, CentOS, Alpine Protocols: SIP, RTP, SDP, SRTP, ICE, DTLS, WebRTC Monitoring: sngrep, Homer SIP Capture, Fail2Ban, Netdata DevOps: Docker, Ansible, Kubernetes (Cloud-Native VOIP) 🧠 Why Clients Work With Me 25+ years in telecom & VOIP architecture Built and scaled platforms like VdoTok using FreeSWITCH + WebRTC Performance-tuned Linux servers to handle millions of calls securely Helped startups and enterprises launch, scale, and secure VOIP stacks Expert in carrier interoperability, DID routing, and multi-tenant PBX 🧾 Sample Engagements 🔹 Migrated a legacy PBX to FreeSWITCH with SIP trunking and HA setup 🔹 Built a custom WebRTC softphone connected to Asterisk 🔹 Hardened VOIP infrastructure for international carrier with Linux + firewall tuning 🔹 Developed voice bot with NVIDIA RIVA and integrated it with SIP via FreeSWITCH 📞 Work With Me Whether you need to: Build a complete real-time communication platform Integrate AI voice bots into SIP/WebRTC Optimize or scale a VOIP system Reduce telephony costs Rescue a failing carrier-grade deployment 📞 Let’s Connect Whether you need to optimize your VOIP system, migrate to FreeSWITCH, or troubleshoot deep Linux-based issues, I can step in quickly and deliver solutions that scale and perform. 📅 I’m available for short consultations, full system builds, and long-term projects. Let me know when you're available for a quick Zoom or chat—I'm open Monday through Friday.
- Mobile App Development
- Web Development
- Linux System Administration
- VoIP Software
- Asterisk
- FreeSWITCH
- Call Center Management
- Kamailio
- Software Architecture & Design
- Process Design
- Team Management
- WebRTC
- OpenSIPS
- Kurento
- Live Streaming Setup
- CallTools Call Center Software
- VoIP Administration
Lahore, Pakistan
𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐫𝐞𝐚𝐥‑𝐭𝐢𝐦𝐞 𝐜𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫 (𝐖𝐞𝐛𝐑𝐓𝐂/𝐋𝐢𝐯𝐞𝐊𝐢𝐭 + 𝐒𝐈𝐏/𝐕𝐨𝐈𝐏 + 𝐓𝐰𝐢𝐥𝐢𝐨/𝐀𝐬𝐭𝐞𝐫𝐢𝐬𝐤). 𝐈 𝐛𝐮𝐢𝐥𝐝 𝐥𝐨𝐰‑𝐥𝐚𝐭𝐞𝐧𝐜𝐲 𝐚𝐮𝐝𝐢𝐨/𝐯𝐢𝐝𝐞𝐨, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐬𝐭𝐫𝐞𝐚𝐦𝐢𝐧𝐠, 𝐫𝐞𝐜𝐨𝐫𝐝𝐢𝐧𝐠/𝐞𝐠𝐫𝐞𝐬𝐬 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬, 𝐚𝐧𝐝 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈 (𝐒𝐓𝐓/𝐓𝐓𝐒 + 𝐜𝐨𝐧𝐯𝐞𝐫𝐬𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐀𝐈) 𝐭𝐡𝐚𝐭 𝐰𝐨𝐫𝐤𝐬 𝐢𝐧 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧. I build enterprise-grade real-time systems, 𝐖𝐞𝐛𝐑𝐓𝐂 / 𝐋𝐢𝐯𝐞𝐊𝐢𝐭, 𝐒𝐈𝐏/𝐕𝐨𝐈𝐏 𝐭𝐞𝐥𝐞𝐩𝐡𝐨𝐧𝐲, and 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈 (STT/TTS + conversational AI). If you're dealing with 𝐥𝐚𝐭𝐞𝐧𝐜𝐲, 𝐜𝐚𝐥𝐥 𝐝𝐫𝐨𝐩𝐬, 𝐍𝐀𝐓/𝐓𝐔𝐑𝐍 𝐢𝐬𝐬𝐮𝐞𝐬, 𝐫𝐞𝐜𝐨𝐫𝐝𝐢𝐧𝐠 𝐟𝐚𝐢𝐥𝐮𝐫𝐞𝐬, 𝐬𝐜𝐚𝐥𝐢𝐧𝐠 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬, or 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧, I can help you deliver a stable solution end-to-end. I'm 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 on Upwork with strong long-term delivery history, and I focus on what clients actually care about, 𝐫𝐞𝐥𝐢𝐚𝐛𝐢𝐥𝐢𝐭𝐲, 𝐬𝐜𝐚𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲, and 𝐦𝐞𝐚𝐬𝐮𝐫𝐚𝐛𝐥𝐞 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 (join time, RTT, jitter, packet loss, concurrency, CPU/bandwidth cost). I'm also an inventor on a 𝐠𝐫𝐚𝐧𝐭𝐞𝐝 𝐔𝐒 𝐩𝐚𝐭𝐞𝐧𝐭 (𝟏𝟐,𝟒𝟓𝟐,𝟑𝟏𝟕) in teleconferencing/real-time communication, so RTC is not just "a feature" for me; it's the core. 𝐖𝐡𝐚𝐭 𝐈 𝐝𝐨 𝐛𝐞𝐬𝐭 ✅ 𝐖𝐞𝐛𝐑𝐓𝐂 / 𝐋𝐢𝐯𝐞𝐊𝐢𝐭 (𝐥𝐨𝐰‑𝐥𝐚𝐭𝐞𝐧𝐜𝐲 𝐚𝐮𝐝𝐢𝐨/𝐯𝐢𝐝𝐞𝐨 + 𝐬𝐜𝐚𝐥𝐢𝐧𝐠) • LiveKit architecture (self-hosted) + production hardening • SFU scaling strategy (regions, routing, concurrency planning) • TURN/STUN/ICE reliability for strict NAT / enterprise networks • Performance tuning: jitter, packet loss, bitrate adaptation, simulcast/SVC strategy • Recording/egress pipelines + media routing + stream health monitoring ✅ 𝐓𝐞𝐥𝐞𝐩𝐡𝐨𝐧𝐲 (𝐒𝐈𝐏/𝐕𝐨𝐈𝐏) + 𝐓𝐰𝐢𝐥𝐢𝐨/𝐏𝐥𝐢𝐯𝐨 + 𝐀𝐬𝐭𝐞𝐫𝐢𝐬𝐤 • SIP trunking integrations (inbound/outbound), routing, call control • Asterisk: IVR, queues, dialplans, conferencing, PBX integrations • Twilio Programmable Voice: webhooks, recordings, call flows, media streaming • WebRTC ↔ SIP bridging (browser/app calling into PSTN) ✅ 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈 (𝐒𝐓𝐓/𝐓𝐓𝐒 + 𝐂𝐨𝐧𝐯𝐞𝐫𝐬𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐀𝐈) 𝐭𝐡𝐚𝐭 𝐰𝐨𝐫𝐤𝐬 𝐨𝐧 𝐫𝐞𝐚𝐥 𝐜𝐚𝐥𝐥𝐬 • Real-time STT streaming (partials, low latency) + speaker-aware workflows when possible • Streaming TTS with interruption handling (barge‑in) and turn-taking logic • Voice agent orchestration (including Vapi-style patterns) •Call summaries, structured data extraction, CRM updates, analytics • Guardrails + fallbacks (human handoff, escalation, retry logic) ✅ 𝐀𝐈/𝐌𝐋 + 𝐂𝐨𝐦𝐩𝐮𝐭𝐞𝐫 𝐕𝐢𝐬𝐢𝐨𝐧 (𝐰𝐡𝐞𝐧 𝐢𝐭 𝐬𝐮𝐩𝐩𝐨𝐫𝐭𝐬 𝐭𝐡𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭) I integrate AI/ML in a production-first way that doesn’t break real-time constraints: • OCR + computer vision pipelines (live overlays, detection, automation) • ML/LLM components for classification, routing, QA scoring, intent detection • PyTorch/TensorFlow integration when custom models are required • Generative AI features (RAG / knowledge-based responses) with accuracy controls 𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤 (𝐬𝐨 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐝𝐨𝐧'𝐭 𝐝𝐫𝐢𝐟𝐭) 𝟏. 𝐐𝐮𝐢𝐜𝐤 𝐝𝐢𝐬𝐜𝐨𝐯𝐞𝐫𝐲: goals, target platforms, expected concurrency, latency KPI, constraints 𝟐. 𝐏𝐥𝐚𝐧: architecture + milestones + risks (written, clear scope) 𝟑. 𝐁𝐮𝐢𝐥𝐝 & 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐞: clean implementation + reviews + docs 𝟒. 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 𝐫𝐞𝐚𝐝𝐢𝐧𝐞𝐬𝐬: monitoring, alerts, load testing, handover 𝐓𝐲𝐩𝐢𝐜𝐚𝐥 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐚𝐛𝐥𝐞𝐬 • Working, deployed solution (Docker/Ubuntu) • Reliable call/stream flows + error handling • Recording/transcription + storage integration if needed • Monitoring dashboards + alert rules • Documentation + runbooks + next-step roadmap 𝐖𝐞𝐛𝐑𝐓𝐂, 𝐋𝐢𝐯𝐞𝐊𝐢𝐭, 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈, 𝐒𝐈𝐏, 𝐕𝐨𝐈𝐏, 𝐓𝐰𝐢𝐥𝐢𝐨, 𝐏𝐥𝐢𝐯𝐨, 𝐀𝐬𝐭𝐞𝐫𝐢𝐬𝐤, 𝐓𝐞𝐥𝐞𝐩𝐡𝐨𝐧𝐲, 𝐒𝐓𝐓, 𝐓𝐓𝐒, 𝐋𝐋𝐌, 𝐂𝐨𝐧𝐯𝐞𝐫𝐬𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐀𝐈, 𝐕𝐚𝐩𝐢, 𝐃𝐞𝐯𝐎𝐩𝐬, 𝐃𝐨𝐜𝐤𝐞𝐫, 𝐔𝐛𝐮𝐧𝐭𝐮, 𝐅𝐅𝐦𝐩𝐞𝐠, 𝐎𝐁𝐒 𝐒𝐭𝐮𝐝𝐢𝐨, 𝐎𝐦𝐧𝐢𝐯𝐞𝐫𝐬𝐞, 𝐀𝐈/𝐌𝐋, 𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐯𝐞 𝐀𝐈, 𝐀𝐫𝐭𝐢𝐟𝐢𝐜𝐢𝐚𝐥 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞, 𝐌𝐚𝐜𝐡𝐢𝐧𝐞 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠, 𝐃𝐞𝐞𝐩 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠, 𝐀𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐂𝐨𝐦𝐩𝐮𝐭𝐞𝐫 𝐕𝐢𝐬𝐢𝐨𝐧, 𝐎𝐂𝐑, 𝐏𝐲𝐓𝐨𝐫𝐜𝐡, 𝐓𝐞𝐧𝐬𝐨𝐫𝐅𝐥𝐨𝐰, 𝐆𝐨𝐥𝐚𝐧𝐠, 𝐀𝐯𝐚𝐭𝐚𝐫, 𝐃𝐢𝐠𝐢𝐭𝐚𝐥 𝐓𝐰𝐢𝐧, 𝐀𝐈 𝐂𝐡𝐚𝐭𝐛𝐨𝐭.
- Machine Learning
- Deep Learning
- Python
- WebRTC
- Full-Stack Development
- Back-End Development
- Generative AI
- Prompt Engineering
- LLM Prompt
- LLM Prompt Engineering
- FFmpeg
- OBS Studio
- Streaming Software
- Wowza Media Server
- Golang
Ahmedabad, India
Hi Guest, First of all, thanks for visiting our profile. I am doing freelancing since 2010 and my expertise on complete VoIP solution including Freeswitch, Asterisk, PJSip, Opensips and Kamailio. I just recently launched a company which is not offering only VoIP solution but Zeus in Web Development(PHP, WordPress etc), Mobile App Development(Android & iOS). We are a team of members having extensive knowledge of all the services we are offering. We have successfully completed many projects delivered competent results with 100% accuracy with lifetime free support. To keep in mind 100% availability, Our dedicated manager is always online to make sure our client will face no more difficult to ask any query at any time. Let me mentioned the technologies which are our core strength listed below: - Development of Linphone Mobile VoIP Diallers - Development of PJSIP Mobile VoIP Diallers - Installation, development, customization, and maintenance of Asterisk,FreeSwitch Switch,Kamalio and OpenSIPs Servers - Android app development - iOS app development - Flutter Cross Platform App Development - Electron App Development - Web application development - ReactJS and ReactNative development for web and mobile applications - Testing and bug fixing for existing applications Consulting for ongoing projects Project consulting for Android, iOS, ReactJS, Asterisk, FreeSwitch, OpenSIPs, Kamailio, ASTPP, RTPengine, MediaProxy, RTPproxy, FreePBX, and A2Billing Expertise in developing Flutter WebRTC applications Expertise in developing ReactNative WebRTC applications Our price is very reasonable which allows us to work with us. Please share your requirement today only with us to check our capabilities to take your experience on the next level. To name a few tools & technologies that I have worked on: • High-level languages: C++, Objective C, Java, Python, PHP • IDEs: Xcode, Android Studio, Eclipse • Version Control & CI: SVN, Git, Perforce, Bitbucket, Jenkins • DBMS: MS SQL, MySQL, Oracle, PostgreSQL, MongoDB • Frameworks: Django, Zend, Magento, Django REST • Management tools: VersionOne, Jira, Trac, MS Project, MS Visio, XMind, Bugzilla, Balsamiq • Amazon Web Services (AWS) - EC2, S3, SQS, SNS, RDS, CloudTrail, Cloudfront
- PHP
- WordPress
- FreeSWITCH
- VoIP Administration
- Asterisk
- Session Initiation Protocol
- VoIP
- FreePBX
- iOS Development
- VoIP Software
- Android App Development
- iOS
- WebRTC
- VICIDIAL
- Call Center Management
Delhi, India
I’m a digital media and streaming specialist with 14+ years of experience building reliable, scalable OTT platforms, TV apps, and video streaming solutions. My focus is on delivering high-performance applications that work smoothly across devices while remaining secure, maintainable, and ready to scale. ⭐ Areas of Expertise ➤TV Apps • Tizen App • tvOS • Apple TV • Roku TV Building optimized TV applications designed for large screens, smooth navigation, and consistent performance across platforms. ➤ Video Streaming • Video Streaming • Twilio • WebRTC • OBS Studio • ffmpeg End-to-end streaming solutions including live streaming, real-time communication, encoding, optimization, and reliable delivery. ➤ OTT & IPTV • OTT platform • IPTV • Streaming Solutions Developing complete OTT and IPTV systems with secure content delivery, user access control, and scalable backend architecture. ⭐ Frameworks & Technology Stack ➤ TV & OTT Platforms Roku SDK (BrightScript, SceneGraph), Apple TV (tvOS / Swift), Samsung Tizen, Android TV ➤ Streaming & Media HLS, RTMP, DASH, WebRTC, Twilio Video, OBS Studio, ffmpeg ➤ Backend & Delivery REST APIs, WebSockets, cloud-based media pipelines, authentication & access control ➤ Deployment & Operations App & channel deployment, monitoring, performance optimization, secure and scalable delivery ⭐ Why Clients Choose Me • 14+ years of hands-on experience in digital media and streaming • Strong understanding of OTT, IPTV, and TV platform guidelines • Clean, scalable architecture and production-ready delivery • Clear communication and dependable execution • Long-term support and platform growth readiness ⭐Let’s Build Your Platform If you’re planning an OTT platform, IPTV system, TV app, or video streaming solution and want an experienced developer with 14+ years in the industry, let’s discuss your project. Message me to get started.
- IPTV
- Roku Development
- Video Stream
- Apple TV Application
- tvOS
- Android App
- Flutter
- React Native
- Firebase
- Smart TV
- Android App Development
- Stripe
- Websockets
- Socket.io
- AWS AppSync
Bila Krynytsia, Ukraine
## Professional Experience ### DevOps / Infrastructure Engineer Yeesshh 2018 – Present Sole DevOps/SRE responsible for full production infrastructure of ~50 web services and internal systems in digital advertising environment. **Infrastructure:** * 6 dedicated bare-metal servers hosted in OVHcloud * Proxmox single nodes and Proxmox cluster, altogether with ~30 virtual machines * Proxmox Backup Server, Custom NFS-based backup storage * Multi-region deployment (EU + Canada) * Internal VPN via Pritunl * Docker-based service deployments **Reliability & Operations:** * 24/7 on-call (30-minute critical SLA response) * ~99%+ uptime across production systems * Full Proxmox node disaster recovery (including restoration from backups) * Centralized monitoring via Zabbix * Centralized logging via Graylog * Security monitoring via Wazuh * Incident management via PagerDuty * Post-incident reporting and preventive improvements **Security & Compliance:** * DNS management (SPF, DKIM, DMARC) * DDoS mitigation using CSF/LFD, ModSecurity, mod_evasive * PCI compliance validation via Qualys (minimal adjustments required) * Regular patching & monthly backup validation **CI/CD & Automation:** * GitHub repositories * Jenkins pipelines for controlled deployments * Staging → testing → manual production release workflow * Limited Ansible automation (update & small maintenance scripts) **Modernization:** * Legacy OS upgrades * Partial containerization of services * Kubernetes - self-hosted proof-of-concept deployment (non-production) --- ### CloudOps / SysOps Engineer LCloud 2021 – 2023 Worked in AWS Partner environment supporting global enterprise and mid-size clients as L1 support. Environment: Amazon Web Services Responsibilities: * 24/7 production support (L1) * EC2, RDS, S3, IAM troubleshooting * Backup & restore procedures * Log analysis & incident escalation * Execution of infrastructure changes according to documentation * Exposure to IaC-managed environments --- ### Independent Linux Infrastructure Consultant 2012 – 2021 Provided infrastructure and system administration services for up to 100 international clients including web hosting providers. Experience includes: * Web hosting environments (Canada & Italy) * Email servers (Postfix/Exim) * DNS management * CMS deployments (WordPress, Drupal, Joomla) * Monitoring (Nagios, Zabbix) * Virtualization (Proxmox) * Security cleanup & WordPress malware removal * Redmine & GitLab environments --- ### Early Career (Condensed) Senior Linux Administrator – Retail network (250 employees) Network design, Linux desktop environment (60+ machines), POS equipment support, server infrastructure management. Additional system & network administration roles (2007–2012). --- ## Personal Technical Projects * Self-hosted AI workflow automation using n8n * Local LLM experimentation (LLaMA-based models compiled via llama.cpp) * Raspberry Pi lab (media server, backup storage, surveillance systems) * Mobile app development(dart) and backend infrastructure (Dockerized Node.js backend) --- ## Languages Ukrainian – Native Russian – Native English – Professional working Polish – Limited working Spanish - Learning
- NGINX
- System Administration
- Apache Administration
- Amazon EC2
- Linux System Administration
- GitHub
- Proxmox VE
- Redmine
- Virtualization
- Nagios Core
- Kubernetes
- Zabbix
- Docker
- Backup Administration
- Network Administration
- Amazon
- Amazon S3
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