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Network & Security Engineer (CCNP) | Network Administration | MikroTik (MTCNA) | Fortinet | pfSense | VPN | Firewall | Monitoring | IT Support | Windows server I help businesses design, troubleshoot, and secure reliable networks so operations stay stable and risk stays low. I’m a hands-on Network & Security Engineer with 9+ years of experience delivering real-world solutions across Cisco, MikroTik, Fortinet, pfSense, VPNs, and monitoring. I focus on scalable, documented, long-term fixes (not temporary patches), and I communicate clearly throughout the project. What I can help you with • Network Design & Troubleshooting (LAN/WAN/Wi‑Fi): routing, switching, VLANs, inter-VLAN routing, performance tuning, site-to-site connectivity • Firewall Setup & Hardening: Fortinet / pfSense / Cisco ASA, NAT, security policies, segmentation, best practices • VPN Setup: IPsec / SSL / Site-to-Site / Remote Access, user access control, multi-site tunnels, secure remote work • MikroTik RouterOS Services: routing, firewall, bandwidth/QoS shaping, ISP/WISP setups, wireless optimization, network troubleshooting • Server & Virtualization Support: Windows/Linux administration, VMware / Hyper‑V (support, integration, migrations) • Cloud Support: AWS / Google Cloud (GCP) connectivity, migration support, hybrid networking • Monitoring & Alerts: PRTG / Zabbix, dashboards, alerts, proactive issue detection Example results delivered • Ransomware recovery + security hardening: recovered 91% of encrypted files and implemented protective controls • Multi-site network (50+ employees): reduced downtime 87% and saved $15,000/year through optimized architecture • Secure VPN rollout (3 countries): enabled remote work for 30+ users across multiple locations How I work • Quick assessment → clear plan → controlled changes → testing → full documentation • Secure-by-default approach and clean, maintainable configurations • Available for one-time projects, ongoing managed services, and urgent troubleshooting Send me a short summary of your environment (devices, number of sites/users, ISP links, current issues/goals), and I’ll reply with a practical plan and next steps.

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.

🏆 LINUX KERNEL & NETWORK ENGINEER |DEVOPS, SERVER & CLOUD SUPPORT 🏆 I am a Linux Kernel, Network, and DevOps Engineer with good experience in Linux systems, server administration, networking, cloud, VPN, firewall, Synology NAS, and embedded Linux. I help clients set up, manage, secure, troubleshoot, and optimize networks, servers, cloud systems, remote access, and low-level Linux systems. ▶︎ CORE SKILLS ✅ Linux Kernel & System Programming Linux kernel development and debugging, kernel modules, device drivers KVM virtualization, filesystem, network, USB, Linux video OOPS debugging, performance analysis, system troubleshooting C/C++, Bash, Makefile, Python Linux system programming and low-level debugging ✅ Embedded Linux OpenWRT, Yocto, Android Linux Raspberry Pi, Orange Pi, embedded Linux boards USB, XHCI, WiFi, LTE, network, and camera drivers Router, gateway, and embedded system development Hardware/software integration ✅ DevOps, Cloud & Virtualization AWS, Azure, Google Cloud, VPS, dedicated servers Docker, Kubernetes, QEMU, Libvirt, VirtualBox GitHub Actions, GitLab CI, CI/CD setup Nginx, Apache, SSL setup Cloud server deployment and maintenance ✅ Network Setup & Administration VLAN, routing, switching, subnetting NAT, port forwarding, DNS, DHCP VXLAN, iptables, router configuration Network troubleshooting and performance fixing Office network and secure remote access setup ✅ VPN & Remote Access WireGuard, OpenVPN, IPSec VPN, L2TP Site-to-Site VPN and Remote Access VPN Secure remote access for users, office branches, and private servers VPN troubleshooting and speed optimization ✅ Linux & Windows Server Administration Ubuntu, Debian, CentOS, Rocky Linux, Arch Linux Windows Server, RDP, SSH Active Directory, Group Policy, users, permissions File sharing, backup, updates, monitoring, logs Server migration and issue fixing ✅ Firewall, Security & NAS Firewall rules, traffic control, access policy pfSense, MikroTik, Fortigate, Linux firewall Synology DSM, shared folders, users, permissions Backup, file sync, remote access, NAS security ▶︎ WHAT I CAN HELP WITH ✅ Linux kernel debugging and system troubleshooting ✅ Linux device driver and kernel module work ✅ Embedded Linux setup and development ✅ OpenWRT, Yocto, and Android Linux support ✅ VPN setup, firewall rules, and secure remote access ✅ Linux/Windows server setup and maintenance ✅ Docker, Kubernetes, CI/CD, Nginx, Apache, and SSL setup ✅ Cloud server setup on AWS, Azure, Google Cloud, VPS, or dedicated server ✅ Synology NAS setup, backup, and file server support ✅ Network performance, server performance, and system analysis ✅ DNS, DHCP, VLAN, NAT, routing, and port forwarding I like to understand the problem first, then check the system carefully and fix it step by step. I can help you keep your network, server, cloud, embedded Linux, NAS, firewall, and system software stable, secure, and high-performing.

I'm network and VOIP engineer with 11 years of experience. Over time I've completed the following certificates: 1. CCNA 2. CCNA security 3. CCNA wireless 4. CCNP - Not certified yet 5. MTCNA 6. MTCRE 7. Linux Essentials 8. LPIC-1 9. Sophos UTM Engineer 10. dCAA 11. 3CX I have experience with the following vendors: Cisco Cisco ACI MikroTIK Sophos UTM Fortinet Checkpoint HP Ubiquiti - Unifi Juniper Alied Telesis PfSense I can help you with: Router configuration WAN Failover VPNs - IPSec, L2TP, OpenVPN etc... Routing - Static, Dynamic including OSPF and BGP MPLS - L3VPN IPSec Firewall - Filter rules, mangle rules etc... FHRP VRF QoS Switch configuration Vlans FHRP Etherchannel Port security Voice Vlan Trunks Troubleshooting Wireless configuration Cisco WLC and LWAPs Ubiquity Unifi - AP, Switch, USG MikroTIK - I have probably configured 500+ MikroTIK devices VOIP 3CX PBX deployment on prem and in cloud Phone management SIP Trunk management DID management IVR Queues Ring Groups etc... Email security Sophos UTM email filter Spam Titan email filter DNS - SPF, DKIM, DMARC Reach out if you find this interesting and we can discuss the details about your project.

Red Hat Linux administrator (RHEL 7/8/9) with AWS SysOps certification and Terraform (Infrastructure as Code) expertise. I build repeatable, version-controlled AWS environments. SELinux enforcing. LVM. Ansible automation. I am an AWS-certified engineer with Terraform expertise and deep Red Hat Linux administration skills. I have managed 50+ RHEL/CentOS servers in production for the last 4 years. My approach: Infrastructure as Code first (Terraform), automation second (Ansible), security always (SELinux enforcing). What I do for clients: Terraform (Infrastructure as Code) AWS infrastructure provisioning (EC2, VPC, subnets, security groups, IAM, S3, RDS, ALB/NLB) Remote state management (S3 backend + DynamoDB locking) Modules for reusable infrastructure components Terraform + Ansible integration (provisioners, remote-exec, or separate workflows) State migration and refactoring CI/CD ready configurations (GitHub Actions friendly) Red Hat Linux Administration (RHEL / CentOS / AlmaLinux) Installation and configuration (Kickstart, manual, or Terraform-provisioned) LVM management (create, extend, reduce filesystems) SELinux troubleshooting and custom policy modules (enforcing mode only) Firewalld configuration (zones, rich rules, masquerading) SSH hardening (key auth, disable root, port changes) Systemd service management and custom unit files Kernel tuning (sysctl) and performance optimization Log management (rsyslog, journald, logrotate) AWS Cloud Engineering EC2 instance provisioning (Linux/Windows) via Terraform and manual VPC design (subnets, route tables, NAT gateways, peering, Transit Gateway) IAM policies, roles, and least-privilege access Systems Manager (SSM) for patching and automation CloudWatch monitoring and alarming Auto Scaling and Load Balancers (ALB/NLB) S3 storage with lifecycle policies, versioning, and replication Multi-account Organization setup Automation & Configuration Management Terraform for AWS provisioning (HCL, modules, state management) Ansible for post-provisioning config (playbooks, roles, Jinja2) Packer (basic) for custom AMIs (available if needed) Bash scripting for custom automation Monitoring & Logging Graylog setup (rsyslog forwarding, dashboards) Nagios / Checkmk configuration CloudWatch agent + custom metrics Recent project examples: Wrote Terraform modules to deploy production-ready VPC with public/private subnets, NAT gateway, ALB, and Auto Scaling group of RHEL 8 instances. Integrated with Ansible for post-deploy configuration. Managed 50+ RHEL 8 servers including SELinux enforcement, Firewalld rules, LVM resizing, and monthly patching via Ansible. Migrated Terraform state from local to S3 backend with DynamoDB locking for team collaboration. Migrated VMware vCenter 6 → 7 and redesigned network with 5 VLANs and new IP scheme. Why work with me: AWS SysOps Certified (hands-on, not just theory) Terraform production experience (state management, modules, S3 backend) Red Hat Linux production experience (SELinux enforcing - I do not disable it) Ansible automation for configuration management Infrastructure as Code philosophy – everything version-controlled, repeatable, documented My typical Terraform + Ansible workflow: Write Terraform to provision AWS resources (VPC, EC2, security groups, IAM) Output EC2 IPs to Ansible inventory Run Ansible playbooks for SELinux, Firewalld, users, packages Commit everything to GitHub (client access provided) I am available for: Ongoing retainer (weekly hours) One-time projects (Terraform module creation, AWS environment setup) Terraform state troubleshooting and migration Emergency infrastructure fixes Message me with: What AWS services you need provisioned If you have existing Terraform code or need from scratch What Linux distribution and version you are using

Specialist with deep expertise in pfSense firewalls, Proxmox VE and Hyper-V virtualization, Docker containerization, Kubernetes orchestration, and DevOps practices. CCNA, CCNP, and CCIE certified with Top-Rated status and 100% Job Success Score. I've successfully deployed high-availability clusters, enterprise firewalls, container platforms, and DevOps infrastructure for organizations globally across AWS, Azure, GCP, Hetzner, and Digital Ocean. 🔥 Network Security & Firewall Services - pfSense/OPNsense deployment and optimization - VPN solutions: IPsec, OpenVPN, WireGuard, site-to-site and remote access - Enterprise network design and security - Cisco/MikroTik/Ubiquiti network equipment management - IDS/IPS with Snort and Suricata - Traffic filtering and QoS for VoIP - Bandwidth management and network monitoring with Zabbix - Cloud-based firewall deployments - For advanced network security requirements, please message for consultation 💻 Virtualization & Container Services - Proxmox VE high-availability clustering with ZFS/Ceph storage - Proxmox Backup Server integration - Hyper-V enterprise deployments with failover clustering - VM migration: VMware to Proxmox, P2V, Hyper-V migrations - Performance optimization and capacity planning - Disaster recovery and backup strategies with Veeam - Docker containerization with Compose and Swarm - Kubernetes cluster deployment and orchestration - Infrastructure as code with Terraform - For complex infrastructure projects, please message for consultation 🚀 DevOps & Automation Services - CI/CD pipeline setup and integration - Docker container deployment and optimization - Kubernetes orchestration and scaling - Infrastructure as code with Terraform - Automated deployment workflows - Container registry management - Microservices architecture implementation - GitLab CI, Jenkins, and GitHub Actions integration - For DevOps transformation projects, please message for consultation 🌐 Cloud & Hybrid Infrastructure Services - Multi-cloud deployments across AWS, Azure, GCP, Hetzner, and Digital Ocean - Hybrid connectivity solutions connecting on-premise to cloud - Cloud-based pfSense deployments - VM network security and POS/ERP system security - Software-defined networking (SDN) - For enterprise-scale cloud architectures, please message for consultation 🎯 Why Work With Me Top-Rated with 100% Job Success Score and Cisco certifications (CCNA, CCNP, CCIE). I deliver scalable, secure infrastructure backed by documentation and ongoing support. For complex deployments, HA configurations, or enterprise migrations, I provide comprehensive consultation and architecture services. ✅ Ready to Discuss Your Project? Tell me about your infrastructure needs and goals. I'll respond with a strategic approach and implementation plan. For larger projects, let's schedule a quick Zoom call to ensure alignment on scope and deliverables. 🌐 Available for project-based work and ongoing infrastructure management ⚡ 24/7 monitoring and support plans available