Alex Njue builds production networking for ISPs, hotels, campuses, and businesses that need reliable internet, clear billing, and secure remote access. Whether you run a hotspot business, a fiber ISP on Huawei GPON, or a multi-branch company that needs site-to-site VPN, the stack is designed for uptime, speed, and simple day-to-day operations across Kenya and East Africa.
On the wireless and access side, work covers Ruijie WiFi controllers and APs, MikroTik RouterOS hotspot and PPPoE fleets, captive portals, voucher WiFi, bandwidth packages, and RADIUS-backed authentication. WiFi billing systems and ISP billing platforms automate packages, M-Pesa STK Push payments, subscriber self-care, and hotspot voucher control so you spend less time on manual reconciliation.
For fiber and last-mile, Huawei GPON OLT/ONT planning, VLAN design, QoS, and customer premises routing keep neighborhoods online. Enterprise and campus networks use MikroTik, Cisco, and Ruijie switching with firewall baselines, NAT, DHCP, DNS, and monitored uplinks.
VPN services include WireGuard VPN for modern high-speed tunnels, OpenVPN (OVPN) for compatible client profiles, and L2TP/IPsec (l2tpd) for legacy and mobile clients. Guidance covers how to create a VPN server, peer configs, key rotation, split tunneling, and failover between branches. Secure remote access for admins and staff is paired with firewall hardening and least-privilege policies.
Hotspot operators in Nairobi, Mombasa, Kisumu, Kampala, Dar es Salaam, Kigali, and secondary towns rely on proven router brands. The most used platforms for hotspot business and WiFi billing in Kenya and East Africa include MikroTik (hAP, RB, CCR, CHR), Ruijie and Reyee WiFi, TP-Link Omada and Archer, Ubiquiti UniFi, Huawei CPE and GPON ONTs, Tenda, D-Link, Cudy, Mercusys, Grandstream, Cambium, and Cisco for enterprise edges. Each brand can feed a captive portal and RADIUS so packages, vouchers, and M-Pesa WiFi billing stay consistent.
Looking to buy a billing system? The marketplace offers self-hosted billing system software for sale — ISP billing suites, M-Pesa STK WiFi billing, hotspot voucher portals, and softwares for sale that you install on your VPS or Linux server. Self-hosted means you own the data, brand the portal, and connect M-Pesa STK Push for instant airtime-style WiFi top-ups. M-Pesa WiFi billing is the standard payment rail for Kenyan hotspot businesses: customers pay via STK, get online, and operators see reconciliations without cash desks.
Beyond routers, Alex ships networking scripts on GitHub and in the marketplace, WhatsApp API alerts for outages and payments, Telegram ops bots, Linux server hardening, Cloudflare DNS and Zero Trust, and AI assistants that answer customer network FAQs. Search for buy billing system Kenya, self hosted billing system, softwares for sale, M-Pesa STK, M-Pesa WiFi billing, MikroTik hotspot East Africa, Ruijie WiFi, Huawei GPON, WireGuard VPN, OpenVPN, or L2TP VPN — then book a consult or chat on WhatsApp to start.