Juniardy Setiowidayoga
Fullstack Engineer with 9+ years of experience. I architect scalable backends and craft intuitive frontends for AI, Blockchain, and high-impact MVPs.
About Me
I approach engineering with a product mindset. I don't just write code; I understand user goals, make thoughtful technical decisions, and collaborate closely with founders to deliver outcomes that matter.
Currently based in Surabaya, Indonesia, working remotely for global teams (Singapore, etc.). I specialize in turning early-stage ideas into functional, user-ready applications.
My expertise spans both the reliability of Web2 (NestJS, React, PostgreSQL) and the bleeding edge of Web3 (Solidity, Rust, Viem, Solana SDK). Recently, I've been heavily involved in AI integration, building MVP products that combine LLMs with blockchain infrastructure.
Whether it's optimizing backend queries for a platform serving 10K+ users like Moladin, or winning 2nd place at the ETHSEA Lisk Hackathon with a Real World Asset project, I deliver quality under pressure.
Technical Arsenal
Frontend
- React.js / Next.js
- TypeScript
- TailwindCSS
- Zustand / TanStack Query
- Component-Driven Dev
Backend
- NestJS / Node.js
- Laravel / AdonisJS
- PostgreSQL / MongoDB
- Redis / Kafka
- Microservices (DDD)
Web3 & AI
- Solidity / Hardhat / Foundry
- Ethers.js / Viem
- Sui / Solana SDK
- LLM Integration
- Smart Contract Indexing
DevOps
- Docker
- CI/CD Pipelines
- AWS S3 / Supabase
- Nginx / Caddy
- Infrastructure Optimization
Featured Projects
Click on a project to view detailed case study.
Market5 Pro
AI-powered platform for marketing agencies with KOL discovery and strategy tools.
AISaaSNestJSLangchainNext.jsPostgreSQLView Case Study
Market5 Pro
AI-powered platform for marketing agencies with KOL discovery and strategy tools.
Overview
Market5 Pro is an AI platform designed for marketing agencies, featuring intelligent KOL discovery and an AI strategy guru.
Key Contributions
- Addressed the need for data-driven marketing by setting up backend REST APIs using NestJS and TypeScript.
- implemented AI agents with RAG using Langchain to provide KOL recommendations and strategic insights.
- Integrated Apify for KOL finding and established CI/CD pipelines with Komo.do for reliable staging and production deployments.
Rishu
DeFi app on Katana blockchain for trading meme tokens via mobile.
Web3DeFiNestJSWeb3SolidityDockerPostgreSQLView Case Study
Rishu
DeFi app on Katana blockchain for trading meme tokens via mobile.
Overview
Rishu is an Engineering Lead project built to simplify meme token trading on the Katana blockchain. It enables users to buy and sell tokens directly from mobile devices with streamlined fiat deposits.
Key Contributions
- Addressed the lack of mobile-friendly DeFi by acting as Engineering Lead to architect the full system.
- Developed a scalable backend with NestJS and Prisma, integrating Turnkey for seamless custodial wallets.
- Shipped the MVP on Katana’s launch day, securing Foundation grants and onboarding 1,000+ community users.
Contendo
Real-time social platform for sports live-play and feeds.
MobileSocialProject ManagementDevOpsMobile DevView Case Study
Contendo
Real-time social platform for sports live-play and feeds.
Overview
Contendo is a sports-focused social media app featuring real-time 'live-play' interactions. As Lead Engineer, I managed the technical delivery during a critical transition phase.
Key Contributions
- Managed a team of 7 as Lead Engineer, navigating complex team transitions to ensure continuous delivery.
- Implemented Socket.io for real-time features and Google Cloud Storage for media-heavy content.
- Established CI/CD pipelines and Firebase notifications, successfully delivering the MVP despite resource challenges.
Satsouk
AI-integrated prediction platform on the BOB network.
AIWeb3Next.jsWeb3SolidityNestJSView Case Study
Satsouk
AI-integrated prediction platform on the BOB network.
Overview
Satsouk leverages AI to aggregate social sentiment and prediction markets. This project bridges EVM workflows with the ICP Network.
Key Contributions
- Engineered an AI agent to scrape YouTube data for trend identification and auto-suggest prediction markets.
- Integrated EVM workflows with the ICP Network via Chain Fusion technology to enable cross-chain functionality.
- Won 2nd Place at ICP Chain Fusion Hackathon and secured technical grants from the BOB Network.
Kolektiva
Fractional property ownership on Lisk blockchain.
Web3RWANext.jsNestJSSolidityDockerView Case Study
Kolektiva
Fractional property ownership on Lisk blockchain.
Overview
Kolektiva is a Real-World Asset (RWA) platform enabling fractional real estate ownership via tokenization.
Key Contributions
- Facilitated fractional property ownership by building a user-friendly React/Next.js interface.
- Integrated Thirdweb SDK for secure wallet connectivity and ensured compliance with RWA verification requirements.
- Delivered a winning MVP that secured 2nd Place at the ETHSEA Lisk Hackathon (2024).
Tenzro NFT
AI-driven metadata generation for NFT creation.
Web3AINext.jsWeb3SolidityView Case Study
Tenzro NFT
AI-driven metadata generation for NFT creation.
Overview
Tenzro NFT simplifies NFT creation using AI. I built the system to generate unique contextual metadata.
Key Contributions
- Developed an AI-driven system to generate unique contextual metadata, simplifying the NFT creation process.
- Utilized Next.js and Thirdweb SDK to enable seamless EVM-based minting and wallet connectivity.
- Delivered a full-cycle MVP supporting ERC-721 and ERC-1155 standards for public sales.
Moladin
Financing platform serving 10K+ dealers.
FintechTypeScriptExpress.jsNestJSKafkaPostgreSQLView Case Study
Moladin
Financing platform serving 10K+ dealers.
Overview
Moladin is a platform for dealers to request car loans. I supported the engineering ecosystem ensuring reliable loan processing under high traffic.
Key Contributions
- Supported a high-concurrency ecosystem for 10,000+ active dealers by developing core microservices.
- Implemented Redis caching and Kafka message brokers to ensure zero-loss data validity across distributed systems.
- Optimized financing and inventory management features, maintaining high system reliability for daily operational loads.
Tentang Anak
Child growth tracking and e-commerce for 100K+ users.
E-commerceLaravelNestJSRedisElasticsearchView Case Study
Tentang Anak
Child growth tracking and e-commerce for 100K+ users.
Overview
Tentang Anak is Indonesia’s leading parenting platform. I contributed to the backend ecosystem handling high-traffic e-commerce events.
Key Contributions
- Addressed scalability bottlenecks for 100K+ users by migrating the monolith architecture to NestJS microservices.
- Integrated ElasticSearch and Redis to handle 1,000+ concurrent users during peak e-commerce events.
- Launched stable e-commerce modules with secure payment and logistics integrations.
GameSoftBank
Peer-to-peer game trading platform for Singapore.
MarketplaceLaravelVue.jsMySQLView Case Study
GameSoftBank
Peer-to-peer game trading platform for Singapore.
Overview
GameSoftBank is a P2P marketplace for physical games. I architected the core backend infrastructure.
Key Contributions
- Accelerated the MVP launch by 5% through the architectural design of the core backend and admin dashboard.
- Developed robust API endpoints using Laravel and Vue.js, improving integration efficiency with the frontend by 10%.
- Built foundational marketplace logic for secure user-to-user transactions and data access.
Professional Journey
Founding Engineer (Web3 & AI)
Jan 2024 - PresentDelivered 6 digital products and MVPs across Web2, Web3, and AI. Led backend architecture for DeFi apps, improved engineering speed by 10% through boilerplates, and streamlined CI/CD pipelines.
Backend Engineer
Aug 2023 - Feb 2024Maintained backend services for 10K+ users using Express.js and TypeScript. Implemented Redis caching and integrated Kafka for microservices, ensuring stability during high-concurrency periods.
Backend Engineer
Feb 2022 - Jan 2023Supported 100K+ active users. Migrated services to NestJS using DDD. Optimized search with ElasticSearch and integrated payment/logistics gateways.
Full Stack Engineer
Jun 2021 - Sep 2021Built core backend & admin panel for GameSoftBank MVP using Laravel Inertia. Implemented Redis message broker for background processing.
Full Stack Engineer
Aug 2019 - Jun 2021Took ownership of 2 internal products and delivered 5+ client projects. Built scalable APIs with Laravel, Express.js, and Adonis.js, and implemented real-time features using Firebase across web and mobile platforms.
Full Stack Engineer
Nov 2018 - Aug 2019Delivered 5+ client projects using Laravel and CodeIgniter within tight timelines. Migrated file storage to AWS S3 for better asset management and implemented real-time notifications with Firebase.
Backend Engineer
May 2016 - Jun 2018Built a School Management System serving 100+ schools using CodeIgniter and MongoDB. Developed 'Simantiz', a real-time multiplayer board game using Express.js and Socket.io, showcasing early adoption of real-time tech.