Hi, I'm Harfi
Full-stack engineer building AI and blockchain products, end to end.
Highlights
🏆 ETHGlobal
Hedera Track Winner, ETHOnline
AutoVoyage won $2,000 in the AI & Agentic Payments on Hedera track.
🏆 PinGo x Blockchain for Good Alliance
1st Place, DePIN Hackathon Indonesia 2025
&VPN, a decentralized VPN on TON, won $1,700: 1st place ($1,300) plus Best Docs & Setup and Best TON dApp ($200 each).
🏆 UGM x DevWeb3 Jogja
Best Potential App, Cardano UNU Hackathon 2025
TrustBridge won $1,000 for WhatsApp crypto remittance on Cardano.
🏆 Korea Buidl Week
Finalist, BuidlHack 2026
Built in Seoul and made the finals.
Projects
AutoVoyage
Autonomous travel-planning agent that pays for flight, stay and activity data per query over x402 on Hedera, with non-custodial HIP-336 budget delegation and a public HCS audit trail
&VPN
A community-powered decentralized VPN on TON with bandwidth sharing through Tact smart contracts, delivered as a Telegram Mini-App
TrustBridge
Instant WhatsApp crypto remittance for Indonesian migrant workers, powered by Cardano
Indismart Finance Dashboard
Internal financial dashboard for Indismart that replaces spreadsheet reporting with invoice, budget, project and trend views behind role-based access
Quantara (formerly RobinLens)
AI token analyst for bonding curves on Base, with live token discovery and GPT-4o risk scoring. Submitted to Consensus 2026 in Hong Kong
StackSave
A decentralized savings application built with Flutter and Web3
KOMATIK Website
Official profile website presenting KOMATIK UGM's achievements, activities and community
Experience
Software
Full-Stack Developer Intern
Jun 2026 – Nov 2026
PT. Sanggabiz · Yogyakarta · Hybrid
- ▸Built core learning, assessment and user-management features of an LMS with Next.js, TypeScript and Supabase
- ▸Shipped an AI chatbot inside the LMS to answer learners' platform questions
- ▸Implemented authentication, role-based access and database workflows; contributed to PDAM and other client projects
Full-Stack Developer Intern
Jul 2026 – Sep 2026
PT. Indismart Kreatif Solusi · Bandung · Hybrid
- ▸Built an internal financial dashboard tracking cash in/out, expenses and project costs, replacing spreadsheets
- ▸Implemented full-stack financial data management and reporting features
- ▸Designed interactive dashboard interfaces for internal stakeholders
Staff Frontend Developer
Dec 2024 – Dec 2025
OmahTI UGM · Yogyakarta
- ▸Built and launched OMAHTO, a free UTBK mock-test platform for high school students
- ▸Implemented the responsive frontend with React and Next.js in a small team
Member, Software Research & Development
Nov 2024 – Nov 2025
KOMATIK UGM · Yogyakarta
- ▸Developed the official KOMATIK UGM profile website with React and Next.js
- ▸Delivered a responsive, cross-device experience as part of a team
Network engineering
Network Engineer (Remote)
Dec 2024 – Jun 2025
PT. Media Telekomunikasi Mandiri · Jakarta
- ▸Remote FortiGate installations for enterprise clients such as Alfamart, with full documentation
Network Engineer Intern
Jul 2023 – Mar 2024
PT. Media Telekomunikasi Mandiri · Jakarta
- ▸Preconfigured FortiGate, TP-Link, Ubiquiti and Teltonika devices for enterprise rollouts
Network Engineer
Nov 2022
PT. Sisindokom Lintasbuana · Solo
- ▸Built and monitored event-wide network for Muktamar Solo with real-time on-site troubleshooting
Education
Exchange Student
Mar 2026 – Jun 2026
Jeonbuk National University · Jeonju, South Korea
- ▸Machine Learning, Software Capstone Design, Database Design, Software Development Process
B.Sc. Computer Science
Expected May 2028
Universitas Gadjah Mada · Yogyakarta
- ▸Algorithms & Data Structures, Web Semantics, Database Systems, Computer Networks, HCI
Computer Network Engineering (TKJ)
Graduated 2024
SMK IDN Boarding School · Indonesia
- ▸Routing & switching (VLAN, OSPF, STP), NAT, DHCP, firewall and VPN with Cisco, MikroTik and Fortinet
Leadership
General Coordinator, Liaison Officers
26 – 30 Sep 2026
Yogyakomtek 2026 · Yogyakarta · Jogja Expo Center
- ▸Returned as General Coordinator, leading a leaner team of 45 student liaison officers
- ▸Ran recruitment, scheduling and on-site coordination more efficiently for the exhibition at Jogja Expo Center
General Coordinator, Liaison Officers
Sep 2025 – Oct 2025
Yogyakomtek 2025 · Yogyakarta · GIK UGM
- ▸Led 70+ liaison officers from universities across Yogyakarta
- ▸Owned recruitment, scheduling and on-site coordination for a large tech exhibition
Chairman, Majelis Perwakilan Kelas (MPK)
2022 – 2023
SMK IDN Boarding School
- ▸Led the student legislative body and bridged student council and school management
Skills
- Frontend
- ReactNext.jsTypeScriptJavaScriptHTML5CSS3Tailwind CSS
- Backend
- Node.jsExpress.jsREST API designAuthentication
- Databases
- PostgreSQLMySQLSupabase
- Languages
- TypeScriptJavaScriptPythonC++Solidity
- Cloud & Tools
- AWS (EC2)DockerVercelGitGitHubPostmanFigma