Hi, my name is

Brandon Li

Senior Software Engineer | Tech Lead

Tech lead at Zip. Previously Microsoft. UC Berkeley CS.

Experience

Zip

2023 — Present

Zip builds agentic procurement software. Series C ($2.2B valuation). Promoted to Senior Engineer / Group Tech Lead in 18 months — fastest in company history.

Senior Software Engineer | Group Tech Lead

2025 — Present

Founding engineer for the contract orchestration business unit; built a full-fledged CLM from scratch and scaled to ~$1M ARR. Architected semantic search RAG (OpenSearch/pgvector) and a bulk contract import pipeline processing millions of documents.

Software Engineer II

2024 — 2025

Key engineer on the vendor network launch. Built the AI-powered vendor onboarding engine — 200k+ security questionnaires prefilled, 500k+ data points extracted, halving average onboarding time.

Software Engineer

2023 — 2024

Led a 6-phase data migration across 200k companies with zero downtime. Engineered the transition of Zip's vendor permission infrastructure to a dual-scoped RBAC system.

Microsoft

2021 — 2022

Software Engineering Intern — SharePoint Infra/Scalability

Two internships on infrastructure serving hundreds of millions of users. Designed a delta sync framework that reduced site migration downtime from 14 hours to a 5-minute SLA. Improved database load balancing, cutting downtime by 15%.

Berkeley Codebase

2020 — 2022

Client Developer & Project Manager

Berkeley's software consulting org. Led engineering teams building products for Nuro (autonomous vehicles), Addepar (fintech), KeepTruckin (ML infrastructure), and Circle (blockchain).

PhET Interactive Simulations

2019 — 2020

Software Engineering Intern

Lead developer on Collision Lab and Vector Addition — interactive physics simulations used by millions of students worldwide.

Education

UC Berkeley

2020 — 2023

B.A. Computer Science

Machine Learning, AI, Algorithms, OS, Databases, Security, Architecture

Projects

Nuro.ai

React Native, GraphQL | Golang, gRPC, MySQL

Operator kiosk for autonomous vehicle fleet management. Smart clock-in/out based on daily assignments, test ticketing service.

Industry

Solis

Programming Language | Rust, x86-64

A statically-typed compiled language targeting x86-64, built from scratch in Rust.

Open Source

Addepar

AWS ElasticSearch, EC2 | Terraform, React & Springboot

Scalable financial entity search microservice with templatized AWS deployment and full-stack web interface.

Industry

USDC Dashboard

Crypto | Vue/Nuxt/Ethereum

Blockchain dashboard for Circle to manage USDC across multiple networks. Supports transfers, minting, and privileged controls.

Industry

Purple POV

HackSC 2021 Winner | Socket.io/Vue/MongoDB

Real-time collaborative platform. Built at a hackathon.

Hackathon

Collision Lab

PhET Simulation | Javascript

Interactive 2D collision physics simulation. Non-discrete physics engine with bisection root finding, elastic/inelastic collisions, conservation of momentum.

Open Source

Vector Addition

PhET Simulation | Javascript

Math visualization tool for vector operations. Ported from Java to HTML5 for broader accessibility. Used in classrooms globally.

Open Source