Hi, I'm Garang Stephen

I'm a student at Stanford University studying Computer Science with a focus on AI/LLMs, financial systems, and full-stack development. I have experience across iOS development, web applications, machine learning, and distributed systems. I'm passionate about building technology that creates equity and improves education. When I'm not coding, I enjoy exploring aviation and defense tech.

Stanford University — Research Assistant

June 2025 – September 2025 • Management Science & Engineering

• Automated data acquisition pipelines that reduced dataset preparation time by 60%, enabling faster LLM fine-tuning for financial trend prediction
• Retrieved and validated 100k+ records from decentralized sources, ensuring 99% data integrity for AI sentiment analysis
• Authored reproducible documentation and scripts, improving research reproducibility and onboarding efficiency by 40%

YesTech Corp — iOS Developer Intern

January 2025 – March 2025

• Built and deployed new iOS app features with Swift and Firebase, reducing crash reports by 30% through robust testing
• Integrated REST APIs to improve app data sync, decreasing average load times from 1.5s to 0.8s
• Collaborated with product designers to refine UI/UX, leading to a 12% boost in daily active users (DAU)

Aloko — Software Engineering Intern

November 2024 – December 2024

• Implemented secure multi-method authentication with Firebase Auth (email + social login), reducing sign-in errors by 45%
• Developed reusable React/Next.js components and applied state management, improving developer velocity by 25% across teams
• Optimized backend API calls with Node.js, reducing redundant requests and cutting server costs by 15%

Goldman Sachs — Software Engineering Analyst

May 2024 – June 2024 • Virtual Insight Program

• Prototyped algorithmic trading logic using Java + in-house Slang, simulating strategies with 10% latency reduction compared to baseline
• Explored distributed systems design, evaluating fault-tolerance approaches to improve system uptime reliability

Google — Software Engineering Intern

May 2022 – August 2022 • Product Sprint Program

• Designed and deployed a web app on Google Cloud (App Engine, Firestore, Logging) serving 1,000+ requests/day for local restaurant search
• Implemented real-time data visualizations with Java/JavaScript/HTML/CSS, improving search relevance satisfaction scores by 20%
• Paired with peers in agile sprints, delivering production-ready features under tight deadlines

PataKeja — Software Engineer Intern

February 2022 – July 2022

• Integrated APIs with frontend and developed pixel-perfect UI for Android housing app, boosting app rating from 3.8 to 4.5 stars
• Built Python ETL scripts to import 50k+ housing records into PostgreSQL, reducing manual data entry by 90%
• Collaborated cross-functionally to improve navigation flow, cutting bounce rate by 18%