---
title: "Work"
description: "Professional experience of Hieu Pham: roles, companies, and shipped systems."
url: https://hieumpham.dev/work
site: https://hieumpham.dev
---

# Work

Where I have been and what I have built.

## CheckRx - Founding Software Engineer

Building Medicare Intelligence from Zero

- Period: Mar 2024 - Present
- Location: San Diego, CA
- Type: Full-Time
- Skills: TypeScript, Python, Go, React, FastAPI, PostgreSQL, Redis, GCP, Terraform, Docker, GPT-4o, LlamaIndex, LiveKit, ElevenLabs, Twilio
- Page: https://hieumpham.dev/work/checkrx

CheckRx is a Medicare intelligence platform I helped build from scratch as a founding engineer. We started with data pipelines and APIs, then layered on agent tools, a CRM, a voice AI assistant, and a senior-facing conversational product. The team is 5 people (3 engineers), the platform serves 500+ insurance agents, and we handle 50,000+ daily queries. Everything runs on a shared data layer: normalized CMS data, RAG pipelines, and provider/plan APIs that every product consumes.

## Mocktalk - Founding Software Engineer

Real-time AI Interview Coaching from Scratch

- Period: May 2023 - Jun 2024
- Location: San Diego, CA
- Type: Founding Member
- Skills: React, TypeScript, TailwindCSS, FastAPI, Python, PostgreSQL, WebSocket, GPT-4 Turbo, Azure AI Speech, ElevenLabs, LiveKit, Jest, Cypress
- Page: https://hieumpham.dev/work/mocktalk

Mocktalk is an AI-powered mock interview platform. You talk to an AI interviewer in real time, just like a real technical interview. It listens, responds, asks follow-ups, and evaluates your answers with contextual code awareness.

As a founding engineer on a 4-person team, I architected the entire product from zero. The platform served 300+ users across 2,500+ sessions.

## UC San Diego - Student

BS Computer Engineering

- Period: Sep 2020 - Jun 2024
- Location: San Diego, CA
- Type: Student
- Skills: C, C++, Python, Assembly, SystemVerilog, FPGA, Machine Learning, Embedded Systems
- Page: https://hieumpham.dev/work/ucsd

I graduated with a Bachelor of Science in Computer Engineering from the University of California, San Diego. The program bridges hardware and software: you start at the transistor level and work up through digital logic, operating systems, and distributed computing.

UCSD's CE program is engineering-heavy. It is not a CS degree with extra physics. That foundation shaped how I approach every technical problem.

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