Gini Sheja

About

I am focused on building Harper AI, a personal finance copilot for better money habits. Most of my time goes into product decisions, system design, and fast iteration on user experience.

Outside Harper, I work as a generalist across the stack. I enjoy low-level and high-level problems alike. Examples include engineering full-stack applications and building core infrastructure from the ground up, such as designing distributed systems, high-performance storage engines, and low-level networking components. I like hard problems with clear impact on users and developers.

AI Models

Models I reach for daily

GPT-5.4 High

Coding

Primary model for writing code — fast, precise, excellent at complex refactors and multi-file edits.

Claude Opus 4.6

Daily Driver

General purpose — research, reading, rabbit holes, and long-form reasoning across any domain.

Tools I'm Enjoying

Currently using

Claude Code

AI Coding Agent

Bun

Fast all-in-one JavaScript runtime

Oxc

The JavaScript Oxidation Compiler

Neovim

hyperextensible Vim-based text editor

Zed

High-performance code editor

Ghostty

GPU-accelerated terminal emulator

Helium

Lightweight, minimal browser

Railway

Host all my Projects here

lazygit

TUI for git

ripgrep

Blazingly fast grep alternative

Codex

AI Coding Agent

tmux

Terminal multiplexer