Raka Widhi Antoro
Blockchain Engineer · Backend & Full stack Systems Builder
I build production systems across smart contracts, backend services, data infrastructure, internal operations tooling, and cloud environments - from architecture and implementation through deployment, observability, and ongoing production support.
Profile
Backend and Blockchain Engineer with 6+ years of professional experience building production backends, smart contracts, fintech infrastructure, Full stack internal tools, and AI-enabled developer products. Recent work at FORU.AI covers token distribution, NFT badge contracts, marketing data systems, cloud migration, operational dashboards, and internal market-making tooling.
Work Experience
Blockchain Engineer / Full Stack Engineer
- Upgraded the NFT Badge smart contract and supported blockchain functionality across the FORU ecosystem.
- Built the backend and smart contracts for Phase 1 FORU token airdrop distribution from the ground up.
- Recommended a lower-cost Twitter/X data-access approach that reduced recurring spend from hundreds of US dollars to tens of dollars.
- Built a weekly marketing-data dashboard using Telegram reporting, Hasura GraphQL, PostgreSQL, and a Contabo server configured from scratch through production.
- Supported migration of backend repositories, PostgreSQL, and Redis from GCP to OVHcloud; updated CI/CD through GitHub Actions and introduced Grafana and Cronicle.
- Built Full stack market operations tooling for FORU/USDT on MEXC and Mobee, initially owning frontend, backend, database, deployment, and server operations.
Blockchain & Backend Developer
- Built smart contracts and production backend services for multiple client engagements.
- Developed an AI-powered Telegram moderation bot using LangChain.
- Created reusable frontend helper utilities for blockchain integration.
- Collaborated with engineering and product teams on architecture and product flow.
Blockchain Expert
- Delivered practical blockchain education to university students participating in Indonesia's Kampus Merdeka Belajar program.
Polygon Developer
- Built NFT Marketplace smart contracts and helper functions for backend/frontend blockchain integration.
- Worked with Full stack developers to refine product flow and technical implementation.
Blockchain Developer
- Built the smart-contract and backend foundation for a gold-backed stablecoin platform from scratch.
- Contributed across architecture, contract implementation, backend services, testing, deployment, and infrastructure.
Blockchain Developer
- Built NFT Marketplace and IDO smart contracts.
- Created backend/frontend integration helpers and collaborated on product flow across engineering teams.
- Completed two consecutive Blockchain Developer assignments during a total tenure of 1 year and 7 months.
IT Head / Full Stack Developer
- Led development of IDR Private, a micropayment platform designed for low-value online transactions.
- Owned APIs, customer-facing interfaces, admin systems, payment-gateway integrations, infrastructure, and delivery workflows.
- Held overlapping responsibilities as Full Stack Developer and IT Head, combining implementation with technical leadership.
Administrative
- Identified scholarship candidates, communicated information to donors, and maintained accurate candidate records through the organization's website.
Selected Projects
Kritisi Explorer
A multi-chain blockchain explorer and smart-contract analysis platform focused on contract visualization, audit insights, security reporting, and developer-friendly review workflows.
Mini URL Fun
A decentralized slug/NFT platform exploring tokenized naming, blockchain-based ownership, and more approachable identifiers for Web3 products.
Apai - AI Health Assistant
An AI-assisted health-information prototype that helps users explore symptom, medication, and pharmacy information. Designed as informational support, not a replacement for professional diagnosis.
Text Generator Pro
A multi-purpose mobile-ready utility for password generation, random-number generation, and Ethereum wallet creation.
Crypto Converter
A cryptocurrency converter and market-information application with live pricing, Bitcoin/Ethereum unit conversion, analytics, and historical data.
Open-Source Packages
AI-assisted Solidity security audit CLI/tool for vulnerability detection, code-quality review, documentation, and best-practice checks.
Lightweight JavaScript/TypeScript validation utility for Solidity types, Ethereum addresses, and transaction hashes.
Lightweight library that detects Indonesian mobile operators from phone-number prefixes.
Kaggle & Data Contributions
| Dataset / Notebook | Contribution | Portfolio Signal |
|---|---|---|
| Indonesian Public Companies | Curated IDX public-company data supported by a related scraping workflow and notebook. | Scraping & data engineering |
| Mobile Operator Prefixes | Phone-prefix dataset and notebook that also form the data foundation for id-mobile-detector. | Data-to-library pipeline |
| Regional Languages & Areas | An evolving dataset mapping Indonesian regional languages and where they are used. | Local-data curation |
| Indonesia Affordable Housing | National housing dataset with exploratory analysis and a prediction notebook. | Applied analysis & ML |
Communication & Recognition
Technical Writing
Shares practical perspectives on smart-contract security, Ethereum token standards, backend performance, RabbitMQ versus Kafka, serverless infrastructure, TypeScript/Bun/ElysiaJS, and AI API integration.
GitHub Arctic Code Vault Contributor
Recognized in the GitHub Archive Program 2020. Contributions to SangBaik/ExampleBaik and SangBaik/SangBaikSublimeSyntax were preserved across two archived repositories.
Education
STIKOM Yos Sudarso Purwokerto
Bachelor of Computer Science, Information Systems · GPA 3.44