Hello!
I'm Raymond Zhou,
a full-stack software engineer.

About Me

I'm a programmer who loves learning new things and figuring out how things works.

I studied physics before computer science, and one habit stuck with me: when I run into an unfamiliar system, I poke at it until it makes sense. That habit has carried me through two very different industries.

I spent five years at Meditech working on interoperability, which meant getting hospital record systems to talk to each other. Along the way I learned their in house programming language and built integrations to move patient data where it needed to go, sometimes tailoring them so a hospital could get exactly the data it needed.

Next I joined edX, an online learning platform with courses from universities around the world such as Harvard and MIT. I started out on the course authoring side, bringing older tools into modern workflows without disrupting the courses already running on them. Later I joined the core platform team, where I focused on monitoring and observability so we could catch problems before learners noticed them.

Outside of work, I've built some things for fun. DM Kit is a drag and drop dashboard I made for running tabletop games, and it's how I learned React. Lately I've been learning to make games in Godot. Noticing connections like that is my favorite part of this work.

I genuinely enjoy picking up new skills and tackling whatever comes next. Whether it's a new framework, a tricky performance problem, or diving into an unfamiliar domain, I'm always up for the challenge. Excited to see what's around the corner!

Github

Email Me!

Projects

DM Kit

Tech Stack: React, Redux, ES6, Google Firebase

Do you play tabletop story based games like Dungeons and Dragons? Do you run into problems finding that tiny little fact about your world you wrote down 6 months ago? This web app is aimed at game masters like you. Quickly record information in draggable cards, then search it up quickly at a moment's notice.

Experience

Printable Resume

Software Engineer II

2022 - 2025

2U Inc / edX platform

Developed and deployed full-stack features for edX partners including Harvard and MIT, supporting tens of thousands of concurrent learners.
Led backend implementation of the Course Optimizer workstream and implemented major improvements to the core course-editing tools, greatly enhancing user experience for course authors.
Engineered a Python/Go-based GCP course ingestion pipeline projected to generate $500K ARR; optimized data processing speed by more than 75% and lowered course ingestion cost by 50%.
Owned observability and incident management for multiple core edX services, designing Datadog metrics and alerts that reduced incident response time during on-call rotations.
Contributed to the Security Working Group by triaging vulnerabilities and coordinating cross-team remediation efforts.

DM Kit Web Application

2020 - 2024

Web application for data organization geared towards storytelling hobbyists.

Built the foundational codebase for DM Kit using JavaScript, React, Redux, HTML, and CSS.
Developed drag-and-drop functionality with react-rnd to streamline organization workflows for users.
Implemented undo/redo capabilities using redux-undo, enabling users to easily revert changes.
Created a searchable library feature allowing users to quickly filter through project content.
Designed a Firebase database structure that loads projects with hundreds of objects in under 3 seconds.
Collaborated with a UX designer to improve accessibility and user experience.
I worked on this to build my understanding of React. Check out the app in my projects section!

Interoperability Programmer / Analyst

2014 - 2019

Medical Information Technology (MEDITECH), Massachusetts

Supported data transmission between Meditech’s Electronic Health Records (EHR) and third-party systems across 50+ client hospital sites.
Engineered 20+ custom HL7 and CCD features monthly, adapting integrations to diverse hospital workflows and regulatory requirements.
Developed and deployed 100+ production code fixes annually to stable version releases, ensuring system reliability.
Led emergency response efforts to resolve patient data corruption in production environments, preventing major incidents and protecting critical patient information.
Modernized legacy EHR systems by architecting RESTful API infrastructure to meet federal “Promoting Interoperability” standards.