Open to opportunities

Antoine Tan

@antoinetan

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Senior full-stack engineer specializing in high-concurrency Python backends.

United States

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What I'm looking for

I seek remote senior engineering roles focused on scalable Python backends and AI integration, where I can lead architecture, improve performance, and ship reliable, user-facing products within collaborative, engineering-driven teams.

I am a Senior Full Stack Engineer with 12 years building high-scale automation and AI platforms, moving from onsite systems engineering roles to senior remote positions at Zapier and Rad AI. I specialize in Python-driven backends—FastAPI and Django—designed to handle millions of real-time events and heavy-concurrency workloads.

My work focuses on translating complex technical requirements, such as spatial computing data and clinical AI insights, into stable, user-facing products. Notable achievements include rebuilding Rad AI's async-first inference delivery layer to reduce radiologist lag, optimizing patient-history matching for clinical context, and integrating LLMs into Zapier's Natural Language Actions.

I thrive in remote environments and enjoy bridging heavy backend logic with intuitive frontends, using technologies like React, WebSockets, and scalable cloud infrastructure to deliver responsive, reliable products that meet strict performance and compliance requirements.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Rad AI

Jan 2024 - Dec 2025 (1 year 11 months)

Rebuilt the core inference delivery layer into an async-first FastAPI architecture to reduce radiologist-facing lag and hardened task processing to handle millions of patient records per day, improving platform stability during traffic spikes.

Python fastAPI AsyncIO WebSockets Performance Optimization Clinical AI

Senior Software Engineer

Zapier

Jun 2020 - Dec 2023 (3 years 6 months)

Engineered core automation logic and scaled asynchronous backend services for Zapier Editor, Partner API, Tables and Interfaces, and integrated LLMs to enable Natural Language Actions across 5,000+ apps, improving throughput during peak events.

Python Django AsyncIO React APIs Performance Tuning

Full Stack Developer

Magic Leap

Jun 2017 - May 2020 (2 years 11 months)

Developed and maintained a React + Python Enterprise Console and real-time visualization dashboards, automated Lumin SDK build-and-test pipelines to reduce internal release cycles by 20%, and implemented scalable Flask APIs for spatial data imports.

React Python Flask WebSockets Automation Spatial Computing CI CD Developer Tools

Software Developer

Citrix

Jun 2014 - May 2017 (2 years 11 months)

Contributed Python automation for virtual delivery agent registration, built reusable React UI components for Octoblu automation dashboard, and developed tests for asynchronous messaging modules to improve reliability of real-time workflows.

Python React REST APIs Asynchronous Testing