AboutSkillsExperienceMentorshipProjects

Hello!I'm Isabel Ku

Computer Science Major

Isabel Ku outdoors with scenic ocean and hills background

About Me

Interests Cloud
Education CloudHobbies Cloud

Skills

Languages

Python
TypeScript
HTML/CSS
C++
C
C#
Java
ARM

Frameworks

Next.js
Express.js
P5.js
TailwindCSS
Bootstrap
Flask
Jekyll

Libraries

React.js
Node.js
Mongoose
Mockito
REST

Developer Tools

Git
MongoDB
PostgreSQL
MySQL
Firebase
AWS
Twilio
VS Code
Vim
Figma

Spoken Languages

English (Native)
Mandarin Chinese

Technical Credentials

GFACT
GSEC
GCLD

Experience

Amazon Web Services logo
Jun 2026 – Sep 2026
Seattle, WA

Amazon Web Services

Internship

Software Development Engineer Intern

Optimized control plane APIs and data migrations for Bedrock Guardrails, cutting guardrail creation latency and scaling per-account limits.

  • Replaced Lambda in-memory scan with 2 concurrent DynamoDB queries in 3 control plane APIs to cut network transfer, reducing CreateGuardrail latency by 42.6% at P90 (4402→2527 ms), 69.4% at P99 (14808→4538 ms), and 6.7% at P50 (1867→1741 ms) for 0–7500 guardrails.
  • Built bash load tests across 3 affected control plane APIs, capturing P50/P90/P99 latency and ramping up TPS to validate gains at scale while verifying correctness of dependent APIs like ListGuardrails.
  • Designed a backfill migration from O(N) scans to O(1) transactions, drawing on internal Amazon best practices and tooling to raise the cap from 1 to 25 TPS.

Tags

DynamoDB
Lambda
CloudWatch
S3
Bash
Python
Java
Agile/Scrum

1 / 6

Mentorship

Triton Software Engineering

Sep 2025 – now

Mentored 2 developers on the team, offering guidance on navigating college life, career planning, and growing as software engineers.

Mentor Collective

Aug 2025 – now

Guided 3 first-year students through the transition to college, meeting regularly to work through coursework, campus resources, and adjusting to university life.

Chancellor's Scholars Program

Oct 2025 – now

Mentored 2 first-year scholars from underrepresented backgrounds, sharing strategies for navigating academics and building community on campus.

Glen A. Wilson HS CODE Team

Aug 2024 – now

Gave Shark Tank–style feedback to a high school Congressional App Challenge team, helping them win 1st place. Also promoted scholarship and development opportunities, helping 2 students secure a $40,000 scholarship.

Projects

Meemli Web Dashboard screenshot 1

Meemli Web Dashboard

Club

2026

A dashboard for Meemli, a 501(c)(3) education nonprofit. Built login, activation, and password-reset auth flows, plus role-based access control (RBAC) with permission middleware, admin/route guards, and scoped API endpoints so admins and teachers see appropriately restricted data.

Tags

React
TypeScript
Express
Firebase

1 / 5