Alfino
Setiawan
Building and securing decentralized infrastructure.
From smart contracts to validator nodes — end to end.
Alf
@alfset
— 01 / About
Who I
Am
Hi, I'm Alfino Setiawan — known online as alfset and alfcomunitynode. A Web3 fullstack developer and validator operator based in Indonesia.
I specialize in building decentralized applications from the ground up — smart contract architecture to production-ready frontends — while also operating validator infrastructure on multiple blockchain networks.
Currently passionate about: secure smart contract development, scalable dApp architecture, and maintaining reliable validator nodes across the Cosmos ecosystem and EVM-compatible chains.
— Stack & Tools
Smart Contracts
- Solidity
- Hardhat
- Foundry
- OpenZeppelin
Frontend
- Next.js
- React
- TypeScript
- Tailwind CSS
Backend
- Node.js
- Go
- REST APIs
- GraphQL
Infra
- Docker
- Linux
- Nginx
- Systemd
Validator
- Cosmos SDK
- EVM Chains
- Tendermint
- IBC
Web3
- ethers.js
- wagmi
- IPFS
- The Graph
— 02 / Tech Stack
Tools &
Technologies
A full-spectrum toolkit spanning smart contracts, frontend development, backend infrastructure, and validator operations.
Smart contract language
EVM dev framework
Rust-based EVM toolkit
Ethereum JS library
Cardano smart contract lang
Functional programming
React meta-framework
UI component library
Typed JavaScript
Utility CSS framework
3D WebGL library
Motion & animation
JS runtime
Systems language
Containerization
Web server / proxy
Scripting & automation
Systems & Solana programs
Blockchain framework
BFT consensus engine
Inter-blockchain comm.
Linux service mgmt
Metrics & monitoring
Observability dashboard
— 03 / Experience
Work
Timeline
Years of hands-on experience across the full Web3 stack — from DeFi protocols to live validator infrastructure.
2022 — Present
Full-time
Remote · Indonesia
Operating and maintaining validator nodes across multiple Cosmos SDK-based blockchain networks. Responsible for 99.9%+ uptime, monitoring infrastructure, and community education around validator operations.
- Operated validators on 15+ Cosmos ecosystem chains
- Built monitoring dashboards with Prometheus & Grafana
- Automated node management with custom shell scripts and Go tooling
- Maintained <0.1% downtime across all managed validators
- Published open-source guides and tutorials for node operators
2021 — Present
Freelance
Remote · Worldwide
Designing and developing decentralized applications for Web3 clients. Full project lifecycle ownership — from smart contract architecture through frontend delivery and deployment.
- Built DeFi protocol interfaces with React, Next.js, and wagmi
- Developed and audited Solidity smart contracts for EVM chains
- Integrated on-chain data via The Graph subgraphs
- Delivered NFT minting platforms with IPFS metadata storage
- Contributed to multiple open-source Web3 projects
Designing and developing decentralized applications for Web3 clients. Full proje...
2020 — 2021
Self-directed
Indonesia
Deep dive into blockchain fundamentals — exploring EVM internals, writing first smart contracts, and building foundational Web3 tooling. Active contributor to Indonesian Web3 developer communities.
- Deployed first mainnet smart contracts on Ethereum
- Studied Cosmos whitepaper and began validator setup
- Built blockchain explorer integrations and wallet adapters
- Mentored junior developers in Web3 fundamentals
Deep dive into blockchain fundamentals — exploring EVM internals, writing first ...
— 04 / Sample Work
Case
Studies
ComunityNode Platform
Validator Infrastructure & Community Hub
2022
Full-stack platform for the ComunityNode validator service. Real-time validator status, uptime monitoring, staking guides, and community resources for delegators across 15+ Cosmos ecosystem chains.
99.9% uptime
15+ chains
500+ community
Physica Finance
DeFi Lending & Borrowing Protocol
2021
EVM-based algorithmic money market with variable interest rates, over-collateralized lending, liquidation protection, and a full React frontend. Won Web3 Indonesia Hackathon 2022.
Hackathon Winner
EVM Mainnet
Audited Contracts
NFT Launchpad
ERC-721/1155 Minting Platform
2022
End-to-end NFT marketplace with custom ERC-721/1155 contracts, IPFS metadata, on-chain royalties, and Next.js storefront with real-time bid tracking and Metamask/WalletConnect integration.
ERC-721 & 1155
IPFS metadata
On-chain royalties
Validator Monitoring Suite
DevOps & Observability Toolkit
2022
Custom monitoring and alerting toolkit for Cosmos validator operators. Tracks block signing, jailing risk, voting power, and peer connectivity — with Telegram bot alerts and Grafana dashboards.
Real-time alerts
Multi-chain
Gitcoin Funded
Cross-chain IBC Bridge UI
Inter-Blockchain Transfer Interface
2023
User-friendly frontend for IBC token transfers across Cosmos chains. Features chain discovery, fee estimation, transaction tracking, and wallet support for Keplr and Leap wallets.
10+ Cosmos chains
Keplr + Leap
DoraHacks Top 5
DAO Governance Portal
On-chain Voting & Treasury Management
2023
Decentralized governance portal with proposal creation, token-weighted quorum, Snapshot off-chain voting, and on-chain execution via Gnosis Safe multisig. Built on Governor Bravo framework.
Token-weighted voting
Gnosis Safe
Snapshot integration
— 02 / Projects
Selected
Work
Featured Project
ComunityNode
Main validator node community website. Providing infrastructure services and guides for running blockchain validators across multiple networks.
Featured Project
Smart Contracts
Collection of production-ready Solidity smart contracts for DeFi protocols, NFT systems, and governance mechanisms.
Featured Project
Validator Tools
Automated tooling and scripts for managing Cosmos SDK validator nodes — monitoring, alerts, and maintenance automation.
GitHub Repositories
9 reposcysicbot
↗No description provided.
rpcroll
↗No description provided.
Physica-Interfae
↗Dex Interfacefor {Physica Finance
top-holder-token
↗No description provided.
porto
↗No description provided.
CGA-Tools
↗Cardano Governance Analytics tools
celo-miniPay
↗Mini Pay for Laveraging X402 Protocol with CUSD On cello network
learnRust
↗No description provided.
CoFinance-RWA
↗No description provided.
— Activity
GitHub
Activity
Alf
@alfset
Contribution Activity
Live Event Feed
— Credentials
Download
My CV
Full résumé including professional background, technical expertise, certifications, and project portfolio. Available as PDF.
CV-Alfino-Setiawan.pdf
Web3 Developer · Validator Operator
Updated 2024
— 04 / Contact
Let's
Connect
Open to collaborating on Web3 projects, validator infrastructure, smart contract audits, and fullstack dApp development.