L1 · Interface
Products people actually use
I build front-ends in React, Next.js and TypeScript, backed by Node.js, NestJS and Go — dashboards, client platforms and the admin side of everything below.
Hariwan, Sarlahi · Kathmandu, Nepal
Kushal Sapkota
कुशल सापकोटा
I build systems that go all the way down — from the web app to the router, the radio and the drone.
Scroll to go down the stack ↓
L2 · Infrastructure
Servers I run myself
A Proxmox VE lab on a Dell PowerEdge T130, VPS nodes across providers, Docker, Coolify and PM2 — tied together with MikroTik routing and WireGuard.
L3 · Telecom
Messages that have to arrive
Bhairav SMS is my A2P routing, OTP and CPaaS platform speaking SMPP — every message traced to its route, delivery receipt, cost and the client's credit.
L4 · Radio
Below the network, the spectrum
I do signal analysis and SDR with HackRF One, CC1101, NRF24L01+, RFID and GPS modules — including an ESP32 OpenDroneID sniffer that plots nearby drones on a radar display.
L5 · Airspace
Things that fly — and stopping them
As CTO of G Robotics I work on counter-drone systems, AI and VTOL hybrid platforms. Off the clock I fly FPV — a DJI Avata 2 and a BetaFPV Meteor75 Pro over ELRS.
About
I'm Kushal Sapkota — Kush to most people, craptop in technical communities. I'm an engineer and founder from Hariwan, Sarlahi, and I work between Sarlahi and Kathmandu, Nepal.
I'm the CTO of G Robotics, founder of Garud Cyber Defence and Bhairav SMS, and co-founder of CMD Nepal. My work spans full-stack web development, Linux infrastructure, cybersecurity, telecom and SMS (SMPP / A2P) systems, radio-frequency hardware, embedded ESP32 builds and drones.
I won the Hack4Safety Lumbini Province Police Hackathon, and I studied IT at Orchid International School & College.
4ventures founded or led
1stHack4Safety — Lumbini Province Police Hackathon
5layers: web · infra · telecom · RF · drones
On the map
- Hariwan, Sarlahi — Home — where it all started
- Kathmandu — Where I work · G Robotics, Buddhanagar
- Lumbini Province — Where I won the Hack4Safety police hackathon
- Damak, Jhapa — Client I built for: Aarambha Computer Damak
Ventures
G Robotics
Chief Technology Officer · Buddhanagar, Kathmandu
I lead the tech for counter-drone systems, AI, robotics and VTOL hybrid platforms — plus hands-on training programs.
Garud Cyber Defence
गरुड साइबर डिफेन्सFounder
Defensive security services and infrastructure hardening for organisations in Nepal.
Bhairav SMS
भैरव SMSFounder & Lead Engineer
Enterprise A2P SMS routing, OTP delivery and CPaaS platform — SMPP, delivery reports, credits and billing in one place.
CMD Nepal
Co-Founder & Lead Partner
Regional cybersecurity research and development.
Selected work
Tap a contact to read its broadcast
REMOTE ID · 01/08
- UAS ID
- KS-01-BHAIRAV-SMS-PLATFORM
- Type
- Telecom / CPaaS
- Operator
- Kushal Sapkota
- Bearing
- 020° · range 1.8 km
Bhairav SMS Platform
SMPP bridge and admin panel that ties every message to its route, delivery receipt, cost and the client's remaining credit. Multi-currency reseller settlement built in.
Telecom / CPaaS
Bhairav SMS Platform
SMPP bridge and admin panel that ties every message to its route, delivery receipt, cost and the client's remaining credit. Multi-currency reseller settlement built in.
Embedded / RFOpenDroneID Radar
ESP32 Cheap Yellow Display build that sniffs Remote ID broadcasts and plots nearby drones on a live radar screen.
HardwareCyberdeck
Portable field kit in a custom 3D-printed enclosure for RF work and on-the-go Linux.
AI / VoiceMaya
Offline voice assistant that runs locally — no cloud, no data leaving the device.
SimulationBrowser FPV Simulator
Quadcopter sim with deterministic physics and flight-controller-style rate control, rendered in the browser.
InfrastructureProxmox Home Lab
Proxmox VE on a Dell PowerEdge T130 plus VPS nodes, stitched together with MikroTik routing and WireGuard tunnels.
MonitoringNetwork Watch
Monitoring for ~100 devices — OLTs, ONUs, MikroTik routers and switch ports — with Telegram alerts.
WebClient Platforms
Production sites and platforms including Sahaj Deal and Aarambha Computer Damak.
Stack
- Frontend
- React
- Next.js
- Vite
- TypeScript
- Tailwind CSS
- WebGL
- Backend
- Node.js
- NestJS
- Express
- Go
- Data
- PostgreSQL
- MySQL
- SQLite
- MongoDB
- Supabase
- Redis
- Infra & Ops
- Debian
- Ubuntu Server
- Proxmox VE
- Docker
- Coolify
- PM2
- Vercel
- Network & Telecom
- MikroTik RouterOS
- WireGuard
- VLAN / PPPoE
- SMPP
- SIP / Asterisk
- FreePBX
- Security
- Kali Linux
- Web app testing
- Bug bounty
- Responsible disclosure
- Embedded & RF
- ESP32 / ESP8266
- HackRF One
- CC1101
- NRF24L01+
- MFRC522
- u-blox GPS
- Drones
- DJI Mini 4K
- DJI Avata 2
- BetaFPV Meteor75 Pro
- ELRS
- VTOL
Experience
- NowCTOG RoboticsCounter-drone, AI, robotics, VTOL and training.
- 2025InternOfficial World RecordJuly – August 2025.
- 2025Social Media ManagerWorld Record LuxuryFrom June 2025.
- OngoingConsultant & DeveloperCreating Opportunities Nepal · Delight Group of CompaniesSecurity analysis, telecom/CPaaS infrastructure and web platforms.
- EduITOrchid International School & College, Hariwan
Recognition
- Winner — Hack4Safety, Lumbini Province Police Hackathon
- Security reports via Bugcrowd and direct disclosure to Nepali platforms
- Technical proposals for security drone systems
- World Food Forum — Nepal Youth Chapter
- CREASION Tree of the Year
Outside work
- Motorcycle rides on highway and regional routes
- FPV flying
- 3D modelling and functional printing
- 4K video on a Sony α7R, edited in DaVinci Resolve
- Swimming and travel
Questions about me
Who is Kushal Sapkota?
I'm Kushal Sapkota (कुशल सापकोटा), also known as Kush or craptop — an engineer and founder from Hariwan, Sarlahi, Nepal. I'm the CTO of G Robotics, founder of Garud Cyber Defence and Bhairav SMS, and co-founder of CMD Nepal.
What does Kushal Sapkota work on?
Cybersecurity, full-stack web development, Linux and network infrastructure, telecom and SMS (SMPP / A2P / OTP) systems, RF hardware, and drones — including counter-drone systems at G Robotics.
Is Kushal Sapkota the same person as craptop?
Yes. craptop is the handle I use in technical and security communities.
There are several people named Kushal Sapkota — which one is this?
This is the official site of Kushal Sapkota the cybersecurity engineer and founder from Sarlahi, Nepal (CTO of G Robotics, Garud Cyber Defence, Bhairav SMS). I'm not the Kushal Sapkotas working in medicine, finance or abroad.
How can I contact Kushal Sapkota?
Open a ticket with the form on this page or email me — I usually reply within a day or two.
Let's build something.
TICKET KS-······-····DRAFT
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Or email me directly: hello@sapkotakushal.com.np