Hello World, I'm Laurensius Jeffrey Chandra

Building the next generation of scalable systems

Fullstack Developer specializing in backend engineering, Go, distributed systems, and cloud infrastructure. Experienced in designing scalable web applications, developer platforms, APIs, and self-hosted infrastructure using modern DevOps practices. Passionate about open-source software, automation, privacy-focused services, and high-performance backend systems.

Featured Expertise

Some of my favorite technologies and tools for building robust software.

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Go
Level: Expert
TypeScript
Level: Expert
JavaScript
Level: Expert
PHP
Level: Expert
SQL
Level: Expert
Laravel
Level: Expert
Node.js
Level: Expert
Hono
Level: Expert

Featured Work

Select projects displaying architecture decisions, implementation skills, and product vision.

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Domain Checker API

maintained

A high-performance REST API for checking Indonesian domain blocking status using TrustPositif and Komdigi data. Integrated with a Telegram bot for public accessibility.

GoREST APIPostgreSQLRedis

Shortlink Platform

maintained

A lightweight, self-hosted URL shortening platform supporting advanced analytics and custom domains. Deployed at the edge for optimal latency.

HonoTursoCloudflare WorkersTypeScript

AxonEngine

in-progress

A high-performance chess engine using Hand-Crafted Evaluation (HCE) together with an NNUE neural network trained on high-quality chess databases.

GoAssemblyPyTorch

Interested in working together?

I am always open to discussing system architectures, consulting on cloud setups, scaling backend APIs, or collaborating on interesting new platforms.