Software Developer

I build scalable systems that solve real-world problems

8+ years of engineering experience in high-impact industries, now crafting software with the same analytical precision.

TypeScriptReactNode.jsPostgreSQLAWSSystem Design

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Background

About

Combining analytical thinking from industrial engineering with modern software development to build scalable, reliable, and intelligent digital products.

I started in engineering, solving large-scale environmental and industrial challenges.

Today, I apply that same systems thinking to build scalable software platforms, modern full-stack applications, and AI-powered experiences. My background in oil & gas and sustainability shaped how I approach problem-solving — focusing on reliability, scalability, and real-world impact.

Building thoughtful digital systems

Engineering Mindset

Experience solving operational and sustainability challenges in industrial environments.

Full-Stack Development

Building modern applications with scalable architecture, APIs, and responsive interfaces.

AI Integration

Developing intelligent applications with AI-powered workflows and modern LLM integrations.

Engineering Impact

Measurable Industrial Outcomes

A track record grounded in large-scale engineering systems, environmental compliance, and operational safety across industrial infrastructure projects.

700K+tons CO₂e

Emissions Reduction Impact

Contributed to large-scale sustainability initiatives in industrial operations, focusing on measurable carbon footprint reduction.

0LTI

Safety Performance Record

Maintained zero lost-time incidents across high-risk LNG construction environments with strict safety compliance execution.

GOLDPROPER

Environmental Compliance Excellence

Achieved top-tier PROPER certification recognition for environmental management and regulatory compliance performance.

4Full-stack Apps

Production Systems

End-to-end applications with auth, databases, APIs, and deployment

3AI Integrations

Gemini-powered Features

AI storyboards, itinerary generation, and content automation pipelines

90%Test Coverage

Backend Reliability

Jest + Supertest coverage across controllers and API layers

Selected Work

Projects

Social Media Analytics & Content Platform

FireWork Studio

A full-stack social media management platform that aggregates analytics across Instagram, Twitter, and TikTok, surfaces trending content, and uses AI to generate storyboard ideas for scheduled posts.

Live metrics dashboard for Instagram, Twitter, and TikTok with engagement history charts
AI storyboard generator (video & carousel) using Google Gemini with per-scene image generation
Trending content discovery via Apify scrapers filtered by user interests

Next.js 16TypeScriptTailwind CSSPrisma + PostgreSQLGoogle Gemini APIBetter Auth

Live Demo Code

Sneaker eCommerce Platform

SprintZee

A full-stack sneaker eCommerce store with JWT authentication, debounced search, infinite scroll, wishlist management, and Midtrans payment gateway integration.

JWT cookie authentication with register, login, and server-action logout
SSR product detail pages with dynamic Open Graph metadata per product
CSR product listing with debounced search, price range filter, tag filter, and sort

Next.js 16TypeScriptTailwind CSS 4MongoDB (native driver)JWT (jsonwebtoken)bcryptjs

Live Demo Code

AI-Powered Trip Planning Application

TripPlanner

A full-stack trip planning platform with Google and GitHub OAuth, AI-generated day-by-day itineraries via Gemini, live hotel and location search, and a drag-and-drop itinerary editor managed through Redux.

Three auth methods: email/password, Google OAuth 2.0, and GitHub OAuth — all issuing JWT tokens
AI-generated structured itineraries via Google Gemini, scoped to destination, budget, duration, and interests
Live hotel search via Booking.com API with price, rating, photo, and address data

React 19Redux ToolkitReact Router 7ViteTailwind CSS 4Axios

Live Demo Code

GraphQL Social Media Mobile App

VOCA

A full-stack social media mobile app built with React Native (Expo) and a GraphQL API, featuring posts, likes, comments, user search, and a follow system backed by MongoDB and Redis.

GraphQL API with a single endpoint covering all mutations and queries: register, login, posts, comments, likes, follow, user search, and profile
Toggle-like system: liking an already-liked post removes the like, with per-user isLiked derived field on every post
MongoDB aggregation pipelines with $lookup to resolve follower/following lists and populate comment author details on post detail

React Native (Expo)Apollo Client 4React Navigation (Stack + Bottom Tabs)Expo SecureStoreApollo Server 5GraphQL

Live Demo Code

Philosophy

My Engineering Mindset

Principles that shape how I approach software engineering, problem-solving, scalability, and building technology that creates meaningful impact.

Systems first

My engineering background taught me to think beyond individual features — focusing on how systems behave, scale, and remain reliable under real-world conditions.

Building for real problems

I enjoy creating applications that solve operational and human problems, whether through automation, AI-assisted workflows, or better user experiences.

Scalability and maintainability

Clean architecture, maintainable code, and long-term scalability matter more to me than short-term hacks or quick fixes.

Data-driven thinking

Years of working with compliance systems, environmental reporting, and industrial operations strengthened my analytical mindset and decision-making approach.

Continuous improvement

Transitioning from engineering into software development reflects my belief that growth comes from curiosity, adaptability, and consistent learning.

Technology with impact

I am especially interested in building scalable web platforms and AI-powered applications that improve workflows, productivity, and decision-making.

Technologies

Tech Stack & AI Integration

Technologies and tools I use to build modern full-stack and AI-powered applications.

Gemini API

Technology Stack

OpenAI API

Technology Stack

Vercel AI SDK

Technology Stack

LangChain

Technology Stack

Prompt Engineering

Technology Stack

RAG Systems

Technology Stack

AI Chat Interfaces

Technology Stack

Semantic Search

Technology Stack

Context Management

Technology Stack

Certifications

Verified Skills & Achievements

Certifications and assessments validating my technical skills, problem-solving ability, and full-stack development experience.

Hacktiv8

Featured

Contact

Indra Sanjaya

Enthusiast, Optimist, Problem Solver and Curious Mind

Let's build something impactful

Open to discussing new opportunities, interesting projects, or just having a conversation about engineering and technology.

indrasanjaya.ind@gmail.com

Connect

Instagram

GitHub

Resume

Download CV

I build scalable systems that solve real-world problems

About

Engineering Mindset

Full-Stack Development

AI Integration

Measurable Industrial Outcomes

Emissions Reduction Impact

Safety Performance Record

Environmental Compliance Excellence

Production Systems

Gemini-powered Features

Backend Reliability

Projects

FireWork Studio

SprintZee

TripPlanner

VOCA

My Engineering Mindset

Systems first

Building for real problems

Scalability and maintainability

Data-driven thinking

Continuous improvement

Technology with impact

Tech Stack & AI Integration

Languages

Frontend

Backend & APIs

Databases & ORM

Authentication & Security

Mobile Development

AI & LLM Integration

Verified Skills & Achievements

Full Stack JavaScript Immersive Program

SQL (Advanced)

Rest API (Intermediate)

Let's build something impactful