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⭐ 100% Job Success | 🌟 Rising Talent | 🚀 Linux & DevOps Engineer I help founders and developers deploy, fix, and scale their infrastructure. From broken Docker containers and Nginx issues to full VPS deployments with SSL and CI/CD — I focus on solving real infrastructure problems fast and cleanly. What I work with: • Docker & Docker Compose • Linux / Ubuntu servers • Nginx & reverse proxies • CI/CD pipelines • Cloud & VPS deployments • FastAPI & PostgreSQL • Kubernetes basics • Infrastructure troubleshooting I already have hands-on experience maintaining Linux infrastructure, deploying web services, configuring SSL, and troubleshooting production issues. If your app needs deployment, debugging, or a stable server setup — I can help.

I run production infrastructure and private AI systems on servers you own — Proxmox, Docker, Kubernetes, and self-hosted LLMs that keep your data out of the cloud. 5+ years managing Proxmox clusters, 15+ production VMs, and Docker deployments. If your server is down or your platform needs deploying, I've got you. I'm an infrastructure engineer who's spent the last 5 years running real production environments — not just lab setups. Day to day I manage two Proxmox clusters, 15+ virtual machines, Docker-based deployments, and CI/CD pipelines across multiple products. I work comfortably from the hypervisor up to the reverse proxy. What I do: - Server troubleshooting & recovery — Proxmox, Linux, VPS. Down server back online, root cause found, not just patched. - Docker deployment — Docker Compose, Nginx/Traefik, SSL, CI/CD with GitHub Actions. - VPN & networking — WireGuard, NetBird, OpenVPN, site-to-site setups. - Self-hosted apps — Nextcloud, n8n, Odoo and more, deployed securely and built to last. - Monitoring — Prometheus + Grafana stacks for production visibility. - n8n workflow automation — API integrations, AI agents, business workflows. - AI/LLM infrastructure — Ollama, self-hosted models, GPU setup. - Cloud migration between providers. How I work: I treat your server like production — because it is. I verify the traffic path and check logs before changing anything, I document what I do so you understand it, and I never make silent changes that could break access. You get a fix that holds, plus a clear explanation of what happened and why. For clients who want peace of mind, I offer monthly server management — proactive monitoring, security updates, backups, and priority response, so problems get caught before they become outages. Tools: Docker, Docker Compose, Nginx, Traefik, Proxmox VE, GitHub Actions, Linux (Ubuntu/Debian/CentOS), WireGuard, NetBird, PostgreSQL, MySQL, Redis, Prometheus, Grafana, n8n, Ollama, Let's Encrypt, fail2ban, systemd. → Tell me what's broken or what you're building — I'll tell you exactly how I'd handle it.

Hey, I'm Serge — a DevOps engineer and Linux sysadmin with 16 years of hands-on experience. Top Rated Plus on Upwork, $70K+ earned, 100% Job Success Score across 24 contracts. My day-to-day involves leading DevOps work for US and Israeli companies — finance, government, tech. Through my employer, the rate is around $100–120/hr — that includes company overhead, account managers, and the usual agency markup. Here on Upwork you hire me directly. No middlemen, no account managers. That's why the rate is lower — not because the work is different. What I focus on most: **Kubernetes and container infrastructure** I've set up and migrated dozens of projects to Kubernetes — EKS, GKE, AKS, and on-prem. I handle the full stack: Helm-based deployments, Grafana + Loki for monitoring and logging, Terraform for infra as code. If your app is still running on Docker Compose and you're hitting limits, this is exactly what I do. **CI/CD pipelines** Setting up proper pipelines from scratch — GitLab CI, GitHub Actions, Helm. Dev/stage/prod environments with proper Git flow so your developers aren't blocking each other. **Cloud infrastructure — AWS, GCP, Azure** Terraform for everything that can be described as code. Multi-environment setups, VPC, networking, RDS, S3, load balancers, security groups. Migrations between accounts, between clouds, and from on-prem to cloud. **AI infrastructure** More recently I've been setting up GPU-based AI infrastructure — Ollama, vLLM, LiteLLM proxy. If you're deploying local LLMs or building AI-powered apps and need the infra side sorted, that's something I can help with too. **A few practical things:** - Up to 8 hours/day — I work focused, not just "clocked in" - You work directly with me throughout the project - I write documentation so your team can actually use what I build If you have a project in mind and want to talk through the scope first, I'm happy to do a short call. Just send a message. Serge ---

23+ years in Linux/Windows administration, DevOps, and cloud infrastructure. I build, secure, and scale production systems 24/7 — for MSP clients and direct engagements across industries. If your server is down, your deployment is failing, or you need infrastructure built right the first time — I'm the engineer you call. ━━ SERVER & SYSTEMS ━━ Linux (CentOS, Debian, Ubuntu, Amazon Linux, Rocky Linux) and Windows Server (2012–2025). Active Directory, Group Policy, Intune, hybrid identity. Nginx, Apache, Sendmail, Qmail, Postfix, Exim — MTA setup, Dovecot, SpamAssassin, OpenDKIM, SPF/DKIM/DMARC. Veeam, Acronis, cloud-native DR. Hypervisors: KVM, VMware ESXi, Hyper-V, Proxmox VE — HA clusters, live migration, Ceph/ZFS, Proxmox Backup Server. Redis, Varnish. QNAP NAS — storage management, Plex Media Server deployment, VPN tunnel integration. WHM/cPanel, Plesk, Virtualmin, CloudPanel, CyberPanel. ━━ CLOUD INFRASTRUCTURE ━━ AWS: EC2, ECS, EKS, RDS, S3, Route 53, IAM, VPC, CloudWatch, Lambda, API Gateway, Elastic Disaster Recovery. GCP: Cloud Run, Cloud Build, Firestore, GKE, IAM, VPC, Pub/Sub, Cloud Storage, Secret Manager, Cloud Monitoring. Cloudflare (WAF, Workers, Zero Trust, CDN). DigitalOcean, Hetzner, Vultr. MinIO: S3-compatible object storage on bare metal, VMs, Kubernetes — distributed mode, SSE-S3/KMS, lifecycle policies, drop-in S3 for backups and MLOps. Railway: Full-stack PaaS — GitHub/Docker auto-build, managed DBs (PostgreSQL, MySQL, Redis), private networking, env variables, cron workers, auto-scaling. ━━ SECRETS MANAGEMENT ━━ HashiCorp Vault: Dynamic secrets for AWS IAM, databases, cloud providers — TTL-bound credentials, auto-revoke. PKI for internal CA and on-demand TLS. Vault Secrets Operator for Kubernetes (etcd-free pod injection). Raft HA, RBAC, audit logging, Shamir unseal. Transit engine for encryption-as-a-service. CI/CD integration to eliminate hardcoded credentials. ━━ DEVOPS & CI/CD ━━ Docker, Kubernetes (EKS + self-managed: kubeadm, k3s, RKE2), Helm, Kamal. GitHub Actions, GitLab CI, Bitbucket Pipelines. Terraform, Ansible. ArgoCD, Flux (GitOps). Prometheus, Grafana, Datadog. Traefik: Cloud-native ingress — auto TLS, Docker/K8s service discovery, ForwardAuth, rate limiting, canary routing. Caddy: Zero-config-TLS reverse proxy — automatic HTTPS, on-demand certs. Preferred for self-hosted stacks. ━━ NETWORKING & SECURITY ━━ WireGuard, OpenVPN (MFA/ZTNA), IPSec/Libreswan, Xray/REALITY. Tailscale/Headscale — self-hosted mesh VPN, VPS tunnel setup, ACL policies, subnet routing. MikroTik, Juniper, SonicWall, Fortinet (FortiGate, FortiManager, FortiAnalyzer). pfSense, OPNsense. BGP, OSPF. Auth0, OAuth2, OIDC, Duo Security. LDAP/RADIUS, 802.1x, NPS/AD CS/Intune. ━━ DEVELOPMENT & AUTOMATION ━━ Python: FastAPI, Flask, Django, RESTful APIs, OpenAI API, ETL pipelines (Airbyte), orchestration (Airflow, n8n), data processing (pandas), Retool internal tools. Clean, documented, production-ready code. ━━ CONTAINERIZATION & DEPLOYMENT ━━ Docker Compose, Kubernetes manifests, Helm. Portainer, Coolify, Elestio, Traefik, Caddy. MinIO (K8s Operator/Tenant). Nextcloud, n8n, self-hosted app deployment. Vercel, Railway, Netlify, Replit. ━━ MSP & VOIP ━━ Duo Security, SpamTitan, ScreenConnect, ESET, Acronis. M365 multi-tenant administration. Asterisk and Vicidial (AWS + on-prem) — SIP trunks, IVR, call center setup, NetSIP integration. ━━ LEGACY & EARLY CAREER ━━ Foundational background in Windows desktop application development (VB, C#, Access) and web development (Core PHP, Laravel). ━━ WHAT CLIENTS HIRE ME FOR ━━ ► Emergency triage: servers down, services failing, breaches in progress ► Greenfield AWS/cloud environments built to security and compliance best practices ► CI/CD pipelines rebuilt to work reliably — no more failed deployments at 2am ► Self-hosted stacks that cut cloud bills without cutting uptime ► Kubernetes from scratch: EKS, k3s, RKE2 — setup, Helm, GitOps, day-2 operations ► HashiCorp Vault rollouts — eliminate hardcoded credentials across all pipelines ► Proxmox VE clusters: HA, live migration, Ceph storage, Proxmox Backup Server ► Network redesigns: Zero Trust, WireGuard mesh, BGP multi-homed, FortiGate, pfSense ► Ongoing managed infrastructure support and 24/7 incident response ► GCP solution design & delivery — Cloud Run, microservices, IAM, developer onboarding/offboarding ► Infrastructure, Security & Application Audits — server, network, database, cloud, and web stack ━━ INDUSTRIES SERVED ━━ SaaS · Fintech · Healthcare · E-commerce · Legal · Real Estate · Media · Education · Government · Telecoms · Startups · Enterprise. Single-server MVPs to multi-region, multi-account production environments. ━━ COMMUNICATION & PROCESS ━━ I don't disappear after the kickoff call. Clear updates at every stage, thorough documentation, and a proper handover on every engagement. Timezone-flexible. Slack, Teams, WhatsApp, Zoom, or Webex. If the work matters, it gets done right.

I’m comfortable working within your budget and available 24/7—feel free to invite or contract anytime, even on weekends. Generated 𝗠𝗶𝗹𝗹𝗶𝗼𝗻𝘀 of targeted 𝗟𝗲𝗮𝗱𝘀 with verified Business Emails, Personal Emails, and Direct Contact Numbers for different Industries and Campaigns. Worked on many 𝗗𝗮𝘁𝗮 𝗦𝗰𝗿𝗮𝗽𝗶𝗻𝗴 projects using both custom Scripts and professional Scraping Tools to collect accurate and reliable data efficiently. 🔹 Core Services ✔ B2B & B2C Lead Generation ✔ Web Scraping & Data Extraction ✔ Targeted Prospect Research (Industry, Location, Decision-Makers) ✔ LinkedIn Lead Generation ✔ Email List Building & Prospect Lists ✔ Contact List Building (Emails, Phone Numbers, Websites) ✔ Data Mining & Web Research ✔ CRM Data Entry & Data Management ✔ Data Cleaning & Email Verification 🔹 Lead Generation Approach I use a combination of bulk lead scraping, manual research, and advanced tools to collect highly targeted and accurate prospect data based on your ideal customer profile. This includes extracting leads at scale as well as manually identifying verified prospects by filtering industry, company size, location, and key decision-makers to ensure maximum relevance and data quality. 🔹 Web Scraping & Data Extraction I extract structured and relevant data from websites, directories, and online platforms using efficient scraping techniques. All data is organized, cleaned, and delivered in ready-to-use formats such as Excel or Google Sheets. 🔹 Data Verification & Quality Control Every dataset goes through a detailed verification process to ensure accuracy and reduce bounce rates. I focus on delivering reliable, actionable data for your campaigns. 🔹 Why Choose Me ✔ High-quality, targeted lead generation ✔ Accurate and verified contact data ✔ Strong attention to detail ✔ Fast turnaround time ✔ Scalable solutions for any business size ✔ Focus on long-term client relationships Lead Generation Tools: Apollo, ZoomInfo, LinkedIn Sales Navigator, Seamless, RocketReach, Cognism, UpLead, Lusha, LeadIQ, Skrapp, GetProspect, AeroLeads, LeadFuze, Datanyze, SignalHire Email Verification Tools: Hunter, NeverBounce, ZeroBounce, Snov, Clearout, Verifalia, MailboxValidator, Kickbox, DeBounce, BriteVerify, EmailListVerify, Abstract API Email Validator Lead Enrichment Tools: Clay, Clearbit, FullContact, People Data Labs, ZoomInfo, Apollo, Lusha, Cognism, Kaspr, Dropcontact, DiscoverOrg, LeadIQ, EnrichHQ Web Scraping / Automation Languages: Python, JavaScript, TypeScript, Node js, PHP, Ruby, Java, C#, Go, Bash Web Scraping Libraries & Frameworks: BeautifulSoup, Scrapy, Selenium, Playwright, Requests, Pandas, lxml, Puppeteer, Axios, Cheerio, Nightmare js, Splash Paid Web Scraping Tools: Octoparse, ParseHub, Apify, Bright Data (Luminati), Oxylabs, Smartproxy, ScraperAPI, Zyte (Scrapinghub), Diffbot, NetNut, DataMiner, Import io, PhantomBuster, WebHarvy, Mozenda, Dexi io Proxies & Anti-Blocking Tools: Bright Data Proxy Manager, Oxylabs Proxies, Smartproxy, NetNut, ProxyMesh, Storm Proxies

My skills and interests are within Linux System Administration, MySQL, PHP Web Programming, JavaScript and BASH scripting. My oDesk test results were as follows: - Redhat Linux 9.0 Admin (Above Average) - U.S. English Basic Skills (Top 10%) - Ecommerce (Above Average) - LAMP (Above Average) - PHP (Above Average) - MySQL 5.0 - JavaScript - HTML 5