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Putra Hidayat Arifin

Full-Stack & AI Engineer

phone / whatsapp

+6285763402690

birthday

July 27, 2001

Location

Medan, Indonesia (GMT+7)

availability

Open to Worldwide Remote

cv / resume

Click Here

I’m a full stack developer based in Medan, Indonesia who enjoys building products that people actually use. Over the past 4 plus years, I’ve worked on healthcare and logistics platforms, delivering features from frontend to backend and making sure everything runs reliably in production, alongside freelance work delivering AI-powered solutions for international clients. I mainly work with Vue, Nuxt, React, Laravel, and Node.js, but I’m comfortable across the stack when needed. I’ve handled production support, rolled out systems for partner hospitals, built internal tools from scratch, and improved performance where it was slowing teams down. These days I also specialize in LLM integration, prompt engineering, and Retrieval-Augmented Generation (RAG) pipelines—putting AI to work inside real products instead of demos. I care about clean code, system stability, and building solutions that last. I’m used to fully remote, async-first work: proactive progress updates, clear documentation, and collaborating with distributed teams across EU, US, and SEA time zones. I like taking ownership, digging into root causes, and turning complex requirements into practical, working software. I’m always looking to grow, contribute, and build things that make a real impact.

What I'm Doing

Full-Stack Web Apps (Vue/Nuxt, React + Laravel/Node)

I design and ship production apps end to end—Vue 3/Nuxt, React, Laravel and Node.js/Express, TypeScript where it helps. Clean architecture, RBAC, solid CRUD + REST, CI/CD with GitHub Actions, caching, and jobs, so platforms stay reliable at 99.9% uptime.

AI Integration & LLM Engineering

I bring LLMs into real products: prompt engineering for classification, summarization and extraction, OpenAI GPT and Anthropic Claude integration with error handling, rate-limit and cost control, plus RAG pipelines and multi-step AI agents built with LangChain and custom orchestration.

APIs & Integrations

I design stable REST APIs and wire up third-party services. Solid modeling, versioning, OAuth2/JWT, webhooks with retries, rate limits, idempotency, and real-time channels with Socket.io. Clear docs and examples so devs can move fast.

Internal Tools & Dashboards

I turn spreadsheet chaos into sharp internal apps. Role-based access, audit trails, SLA timers, automated task queues, imports/exports, approvals, and clear charts. Proven in healthcare, logistics, and port operations.

© Putra Hidayat Arifin 2026