Software Engineer

I build backend systems, small tools, and practical web products.

I'm Izhari Ishak Aksa, a software engineer working mostly with Go, Java, and product-oriented systems. I like building reliable services, focused tools, and useful content around the products I ship.

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Projects

Useful products, tools, and systems

A focused selection of mobile apps, web tools, enterprise systems, and open-source projects I have built or contributed to.

Mobile App

Pauli Test App

Mobile app for practicing Pauli/Kraepelin tests with timer-based sessions, handwriting input, scoring, history, leaderboard, and contest flows.

FlutterGoRedisPostgreSQL
Web Tool

Harvard Sentences

Interactive speech intelligibility tool with all 720 Harvard Sentences, IPA transcriptions, list filtering, and text-to-speech playback.

Next.jsTypeScriptTailwind CSS
Web Tool

Tes Koran Online

Browser-based Tes Koran (Pauli/Kraepelin) simulation with a newspaper-style number column, clickable + keyboard numpad, 4-round timing, and automatic speed/accuracy/consistency/fatigue scoring.

Next.jsTypeScriptTailwind CSS
Web Tool

Tes Koran PDF Generator

Printable Tes Koran PDF generator for Pauli/Kraepelin practice sheets with A4/A3 layouts, seeded random digits, preview, and optional answer key.

Next.jsTypeScriptTailwind CSS
Web Platform

SistaStore

Affiliate product discovery site with recommendations, reviews, price history, and integrated affiliate links.

Next.jsGoDocker
Corporate Website

Socfindo Conservation Website

Modernized website for conservation efforts and environmental initiatives by Socfindo, focused on sustainability in the palm oil industry.

Next.jsGoMySQLDocker
Corporate Website

Socfindo Company Website

Modernized corporate website for Socfindo, a major palm oil company, covering company information, products, and services.

Next.jsGoMySQLDocker
Enterprise System

SIMRKA

Budgeting, expenditure, and payroll management system for the University of Sumatera Utara.

PHPMySQL
Enterprise System

SIMSDM

Human Resource Management System for the University of Sumatera Utara, covering employee records and payroll workflows.

PHPMySQL
Education Platform

Medical Student Logbook

Logbook management system for medical students to track educational activities and daily tasks.

PHPMySQL
Open Source

E-Commerce System Example

Example ecommerce system demonstrating full stack architecture for products, orders, and users.

GoDockerSQL
Open Source

LeetCode Solutions

Optimized LeetCode solutions in Go, focused on algorithms, data structures, and problem solving.

GoAlgorithms
Open Source

UVa Solutions

UVa problem solutions in Java from competitive programming practice and contests.

JavaAlgorithms

Experience

Engineering across fintech, education, and distributed teams

My work has moved between production fintech systems, university enterprise software, and global remote delivery.

GoTo Group logo

Software Engineer

November 2022 - Present

GoTo Group

Developing and maintaining backend services for fintech products, with focus on reliability, security, and operational performance.

Backend servicesFinancial systemsProduction reliability
University of Sumatera Utara logo

Head Programmer

August 2016 - May 2022

University of Sumatera Utara

Led development of university management systems and internal digital transformation initiatives.

Managed a team of 10+ developersBuilt enterprise systemsModernized legacy workflows
TopCoder logo

Project Copilot

March 2011 - May 2016

TopCoder

Coordinated UI/UX and wireframing projects while participating in competitive programming contests.

Delivered 50+ design projectsGlobal remote collaboration

Writing

Practical notes and guides

I write about tools I build, technical decisions, and useful workflows that are easier to understand with examples.

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