Hire the Best TCP/IP Specialists
in Moldova

I help ISPs, WISPs, MSPs, and datacenter operators maintain, troubleshoot, and improve their network infrastructure remotely. My strongest area is provider-style networking: MikroTik RouterOS, BGP, OSPF, VLANs, PPPoE, routing, firewalling, monitoring, wireless links, and day-to-day network operations. I also have hands-on experience with Ubiquiti UniFi/UISP, troubleshooting, Proxmox environments, VPNs, and network documentation. I am a MikroTik MTCINE-certified engineer, with practical experience in ISP networks, BGP routing, MikroTik core routers, access networks, customer troubleshooting, monitoring, and remote support. What I can help with: • MikroTik RouterOS configuration and troubleshooting • ISP/WISP network support and remote NOC tasks • BGP, OSPF, routing filters, VLANs, PPPoE, NAT, firewall rules • Ubiquiti UniFi / UISP support, wireless links, client networks • Proxmox and small datacenter network troubleshooting • Network monitoring, uptime checks, latency/packet loss reports • Remote hands coordination and clear technical documentation

I have 10+ years of hands-on experience in C/C++/Rust/Go/Python, low-level systems, and performance-critical applications. I build performance-critical systems across Linux, Windows, and embedded environments, focusing on reliability, efficiency, and clean data flow. Tech Stack: - Languages: C, C++, Rust (safe systems), Python (tooling/scripts) - Linux Systems: eBPF, XDP, TC, Netfilter, io_uring, epoll, POSIX APIs, RAPL/MSR - Windows Internals: WFP, ETW, KMDF/WDM, WinAPI - Networking: TCP/IP, UDP, QUIC, raw sockets, DPI, protocol design - Embedded: nRF52, nRF53, BLE (GATT), Zephyr RTOS, nRF SDK - Hardware: PCB (Altium, KiCad), board bring-up, signal debugging - Concurrency: multithreading, lock-free structures, async I/O - Observability: perf, ftrace, bpftrace, ETW tracing - Tools: GDB, WinDbg, Wireshark, tcpdump, CMake, Docker, Git I can start right away and work full-time depending on project needs.

I have 20+ years of experience writing and maintaining desktop applications for Windows and Mac in Qt (C++), MFC (C++) and WPF (C#). I mainly specialize in control software for industrial equipment that require near real-time response. Have extensive knowledge of control interfaces and protocols (Ethernet, TCP/IP, serial RS-232, USB). I also work on embedded projects, including: embedded Linux (C/C++, Raspberry Pi, TI Sitara) and pure C/C++ programming for SMT32 family. I’m a founder and main driving force behind my own [tiny] software company. Looking for some extra work in spare time.

🏆 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 am a VoIP Engineer with over 15+ years of expertise in developing, implementing, and optimizing call center systems. Specializing in platforms such as Vicidial (clusters), Asterisk, FusionPBX, and FreePBX, I have a proven track record of delivering end-to-end VoIP solutions that enhance business communications. My work encompasses the entire lifecycle of call center projects, from the initial consultation and requirements gathering to system design, implementation, and ongoing support. I am adept at tailoring solutions based on client needs, whether it’s scaling for larger operations or streamlining for smaller teams. In addition to my VoIP expertise, I have hands-on experience with server management (Linux and Microsoft), Email servers configuration, cloud solutions, and advanced network management, including firewalls, VPNs, and monitoring systems like Zabbix. My knowledge also extends to virtualization with KVM hypervisors and system security with tools such as Fail2ban. I pride myself on providing efficient, reliable, and fully supported systems that meet and exceed client expectations. Let me help you build a call center that works seamlessly with your business operations. Core Competencies: -Call Center Development: Vicidial (clusters), Asterisk, FusionPBX, FreePBX -VoIP and SIP Protocols -Server Management: Linux, Microsoft Server (2003–2016), SBS -Cloud and Email Server Deployment -Network Management: Firewall, Mikrotik, Routers, IPtables, Fail2ban -Active Directory, TCP/IP, DNS, DHCP, VPN, and IPsec Tunnels -Monitoring Solutions: Zabbix (servers and networks) -Virtualization: KVM Hypervisors