Full Stack Engineer @ IntentAI

Hi, I'm Justin Jap.

I'm a software engineer who loves to build things that help people.

Portrait of Justin Jap
Projects

Things I’ve built and shipped.

Some of my works that I’m proud of, from personal products to client launches.

FeaturedPersonal project

Throttlr

Cap speeds, block traffic or set data quotas for any app on your Mac. Watch every app's bandwidth live, right from the menu bar.

  • Swift
  • SwiftUI
  • Network Extension
  • StoreKit
  • Next.js
  • Tailwind CSS
  • NestJS
  • Prisma
  • PostgreSQL
Throttlr screenshot
Justin Jap
About me

Building things that make a difference.

Hi there! I'm a passionate software developer with a love for creating solutions to complex problems. Currently, I work as a Full Stack Engineer at IntentAI. I graduated in 2024 with a Bachelor of Science in Computer Science (Informatics), achieving a GPA of 3.98 and being awarded Best Academic Performance for attaining the highest GPA in my batch.

I have a deep love for developing applications, especially web apps. While I have also delved into mobile app development through the Apple Developer Academy and explored AI, my main focus is on full-stack development. I enjoy building projects that can make a tangible difference in people's lives.

When I'm not coding, you can find me exploring new technologies. I'm a firm believer in continuous learning and always excited to discover new ways to solve problems by technology.

Experience

Where I’m at.

My current role and what I’m working on day to day.

IntentAI logo

Mar 2025 — Present · 1 yr 9 mos

Full Stack Engineer

IntentAI · Singapore · Remote

Contract

Building AI-powered applications, agent workflows, and internal tooling for an enterprise conversational AI platform.

  • Developed AI-powered applications and internal tooling for an enterprise conversational AI platform using Vue, TypeScript, and FastAPI (REST API and Server-Sent Events).
  • Maintained backend services for AI agent workflows, integrating LangChain and Elasticsearch for scalable retrieval and real-time AI interactions.
  • Implemented channel messaging integrations (WhatsApp, email), enabling ~3,000 monthly user conversation sessions.
  • Developed a PostgreSQL-backed persistence layer, supporting ~20,000 workflow node executions per month.
  • Increased system reliability by introducing comprehensive unit testing across services, raising coverage to 80%+.
VueTypeScriptFastAPILangChainElasticsearchPostgreSQL
Awards

Recognition along the way.

Achievements and recognitions I have received.

  • Best Academic Performance (Highest GPA in the Batch)

    Ciputra University · 2024

  • Most Active Leader in Student Organization

    Ciputra University · 2024

  • Swift Student Challenge Winner

    Apple WWDC · 2023

  • 1st Place in Mobile App Competition

    LO Kreatif · 2023