Yudhawan S.

I'm Yudhawan, a Software Engineer with 6+ years of experience building high-performance web, mobile, and AI-powered applications. I handle everything from UI to cloud infrastructure, so you get one developer who can take your product from idea to production. What I do best: Frontend: React, Next.js, TypeScript, Tailwind CSS. I build fast, responsive, accessible interfaces with clean component architecture. Backend: Node.js and TypeScript, with additional experience in Python, Go, and Rust. I design RESTful and GraphQL APIs that are secure, documented, and built to scale. AI & LLM: LangChain, LangGraph, and agent orchestration. I build AI-assisted features like document processing pipelines, RAG systems, and LLM-driven workflows. Cloud & DevOps: AWS (Lambda, Cognito, S3, CDK), serverless architecture, Docker, and CI/CD pipelines for reliable, repeatable deployments. Databases: PostgreSQL, MySQL, MongoDB, and SurrealDB, with schema design and query optimization for efficient data handling. Mobile: React Native and Flutter for cross-platform apps. Recent work: Built an NDIS-compliance audit platform for Australian disability service providers: React 19 frontend, serverless AWS backend, Stripe billing, and AI agents that automate evidence collection and compliance analysis. Led frontend development for a two-sided logistics marketplace in Indonesia, including its buyer and seller e-commerce platforms. Delivered a digital signage management system for one of Indonesia's largest banks, with real-time content syncing across in-branch displays. How I work: Clear, proactive communication and regular progress updates. Agile and iterative delivery, adapting quickly to changing requirements. Clean, maintainable, well-tested code that your next developer will thank you for. Reliable deadlines and fast turnaround on issues. If you need a developer who can own your project end to end, whether that's a web app, an API, cloud infrastructure, or an AI feature, let's talk. Best regards, Yudhawan