Open to opportunities

Nael Jeffrey

@naeljeffrey

Message

I build high-performance trading, Web3, and SaaS applications across web, mobile, and desktop.

Indonesia

Message

What I'm looking for

I'm looking to build reliable, high-performance web, mobile, or desktop products where I can contribute across frontend architecture, backend services, cloud infrastructure, real-time systems, testing, and engineering quality.

I've built and optimized trading platforms at PT. Byte Integrasi Global and PT. Yuanta Sekuritas Indonesia, delivering real-time web and desktop experiences with React, Next.js, Tauri, WebSockets, and FastAPI.

For a high-volume trading workflow, I reduced frontend memory consumption from approximately 3 GB to around 1 GB and improved successful trade processing to approximately 90% through queue-based transaction synchronization. I also built AI chat, community-stream, OAuth 2.0, multi-factor authentication, monitoring, testing, and load-testing capabilities for production trading applications.

At MoonLab, I've delivered fiat-to-crypto and crypto-to-fiat functionality adopted by more than 2,000 Android and iOS users, reduced first-time login time from approximately 9 seconds to 4 seconds, and streamlined Firebase usage from more than 10 API calls to 3. I've also contributed to secure cloud infrastructure, internal software-development platforms, AI-assisted engineering workflows, and Go backend capabilities including RBAC and multi-tenancy.

Across fintech, Web3, SaaS, and data projects, I work end to end: frontend architecture, backend APIs, cloud infrastructure, CI/CD, observability, testing, and real-time systems. I bring experience with React, React Native, TypeScript, Go, Python, Terraform, Docker, and modern full-stack development practices.

Experience

Work history, roles, and key accomplishments

Current

Frontend Developer

Current

PT. Byte Integrasi Global

Dec 2025 - Present (8 months)

Developed a cross-platform online trading application using React, Tauri, and TanStack Start. Optimized frontend performance, reducing memory consumption from 3 GB to 1 GB, and implemented AI-powered features and OAuth 2.0 authentication.

React Tauri TanStack Start TanStack Router Tanstack Query TanStack Table Shadcn Ui Zod Zustand Nitro Biome Husky Vitest Playwright Sentry OAuth Google Authenticator Microsoft Authenticator

Current

Fullstack Developer

Current

MoonLab Ltd

Dec 2025 - Present (8 months)

Maintained and enhanced React Native applications for Web3 products, refactored frontend architecture with Astro, and developed fiat-to-crypto on-ramp/off-ramp functionality. Optimized authentication performance and reduced API calls.

React Native React Astro Firebase Terraform Google Cloud Platform Vitest Playwright AI assisted Development Go

Current

Backend Developer

Current

Gereja Mawar Sharon

Feb 2024 - Present (2 years 6 months)

Migrated APIs from LoopBack to Golang with Gorilla Mux and PostgreSQL, implemented full CRUD functionality, and wrote unit tests. Refactored database queries to improve performance.

Gorilla Mux PostgreSQL Git Unit Testing

Fullstack Developer

MCloudBridge

Oct 2025 - May 2026 (7 months)

Re-architected a legacy ASP.NET MVC chatbot platform to React and TypeScript, migrated databases to reduce latency, and reduced API response time by 83% with caching. Provisioned Azure infrastructure using Terraform and built CI/CD pipelines.

React TypeScript fastAPI Python Terraform Azure Azure DevOps Docker Pino Sentry Zustand

Fullstack Developer

PT. Yuanta Sekuritas Indonesia

Aug 2024 - Oct 2025 (1 year 2 months)

Developed full-stack trading applications using Next.js and FastAPI, built a multi-threaded backend server with WebSocket and REST APIs, and created a desktop trading app with Tauri. Processed real-time trading data streams and optimized frontend performance.

Next.js fastAPI Python Fiber gRPC GraphQL gqlgen Gorm MySQL Redis Parquet WebSockets TCP Docker Linux Tauri Rust Shadcn Ui

Data Scientist

PT. Evotech Distribusi

Sep 2022 - Feb 2023 (5 months)

Gathered data from websites using Python and performed data analysis. Created network distributions from location data, implemented a Vehicle Routing Problem solution, and developed a forecasting algorithm for property prices.

Python Data Analysis Vehicle Routing Problems Forecasting