I am a Senior Backend Engineer with 8+ years of experience architecting scalable web applications, event-driven integrations, and clean API designs. I specialize in building resilient asynchronous architectures, optimizing database performance, and mastering cloud environments (AWS/GCP).
- 📍 Based in Yogyakarta, Indonesia (Open to Remote work)
- 🌐 Portfolio & Case Studies: docs.bobbyfiando.com
- 💼 Connect with me: LinkedIn
- ✉️ Reach out: bobby@bobbyfiando.com
| Category | Technologies |
|---|---|
| Languages | TypeScript, Node.js, JavaScript, PHP, Python, SQL |
| Backend Frameworks | NestJS, Laravel, GraphQL, Express |
| Databases & Caching | PostgreSQL, MySQL, MongoDB, Redis |
| Cloud & DevOps | AWS (Lambda, EC2, ECS, S3, RDS, SQS, SNS), GCP, Apache Kafka, Docker, Terraform, GitHub Actions |
| AI & Orchestration | OpenAI, Google Gemini, LangGraph |
| Architecture & Tools | SOLID, Event-Driven Architecture, Microservices, Prisma, REST APIs, TDD |
An autonomous platform that transforms music studio operations by eliminating empty time slots and manual admin work.
- What it does: Features a 24/7 hallucination-free AI booking assistant and a decoupled background worker that dynamically detects low occupancy to auto-publish promotional Instagram Stories.
- Architecture Highlights: Built with strict multi-tenant database isolation, asynchronous token streaming for low-latency UX, and cost-optimized OpenAI Batch processing (cutting token costs by 50%).
- The Stack: FastAPI, Next.js 14, Python, AWS Lambda, Postgres, Redis, OpenAI API.
- 🌐 Live Platform Landing Page — Explore the core SaaS system, multi-tier tenant white-label capabilities, and automated marketing triggers.
- 🤖 Interactive Booking Demo — Test the zero-hallucination customer chat assistant natively executing real-time database lookups for multi-unit availability.
- 📸 Autonomous Content Engine (Live Sandbox) — See the live production output of the background worker pipeline generating and publishing stories programmatically from real-time occupancy drop metrics.
- 🚀 Mermind Official Channel — The official B2B positioning layer utilizing LLM-driven state graphs to autonomously spin up product graphics and feature layouts.
A premium property rental management application serving as the foundational module of the Propti SaaS ecosystem.
- The Core: Automates multi-tenant contract lifecycles, billing invoice tracking, and real-time financial cashflow dashboards for property owners.
- The Architecture: Built as a serverless-ready Turbo monorepo featuring automated database migrations, continuous deployment pipelines, and custom payment gateway integration.
- The Stack: FastAPI, Next.js, Python, TypeScript, Turbo, AWS Lambda, Neon Serverless Postgres, Docker.
- 🔗 Explore Codebase & Setup Guide
An AI-driven real estate workspace designed for Indonesian agents and property owners to convert informal WhatsApp text into professional, structured listings.
- What it does: Uses AI text parsing to extract property specifications, implements a natural language search toggle ("rumah murah di Jakarta Selatan dekat sekolah"), features a built-in CRM to track leads through sales pipelines, and handles IDR payments via the DOKU gateway.
- Serverless Infrastructure: Built entirely on AWS Lambda (Go 1.24) using AWS SAM for cost-efficient, auto-scaling performance.
- The Stack: Go 1.24, Next.js 15 (App Router), Amazon DynamoDB, Amazon S3, AWS SAM, OpenAI GPT-4 mini, DOKU API, Tailwind CSS.
- 🔗 Explore the Propti Codebase & Local Setup Guide
Rebuilt one-tap checkout to reduce latency, improve payment reliability, and support safer rollout in production.
- Tech Stack: REST API, Laravel, Payment Gateways, Queue Workers, Feature Flags
- Focus: Latency reduction, payment isolation patterns, and zero-downtime progressive canary rollouts.
Improved AI homework workflows with stronger quality checks, clearer processing stages, and safer publishing controls.
- Tech Stack: NestJS, Laravel, PostgreSQL, AWS Lambda, OpenAI
- Focus: Prompt pipeline reliability, background workers, and content safety state machines.
Improved lock and device reliability by standardizing event handling, stabilizing recurring access, and expanding alert coverage.
- Tech Stack: NestJS, GraphQL, PostgreSQL, Redis, Apache Kafka
- Focus: High-throughput telemetry data processing, distributed locking, and real-time streaming infrastructure.
View my deeply detailed Case Studies & Architecture breakdowns ↗
A collection of 2D games and simulations built to explore AI-assisted development, cross-platform compilation, and rapid prototyping workflows.
- Bake Tycoon (Phaser 3 & TypeScript) — A complete, data-driven bakery idle factory simulator featuring complex progression algorithms and native Android compilation.
- The Tech: TypeScript, Phaser 3, Webpack, Capacitor (Android WebView wrapper), HTML5 Canvas.
- The Scope: Explored prompt engineering to generate heavy mathematical logic loops (exponential cost scaling, multi-tier prestige multipliers, and idle loop state tracking).
- 🔗 View Repository
- Reflex Ops (Godot 4 & GDScript) — A lightweight, mobile-first reflex drill and warmup game for competitive players, built using a modern game engine loop.
- The Tech: Godot 4.6 (Mobile Renderer), GDScript, Android SDK/NDK, Android Export System.
- The Scope: Leveraged LLM pair-programming to rapidly design clean UI states, handle state timers, and execute math checks for real-time player accuracy and performance rating tiers.
- 🔗 View Repository