Alexander Ng

Senior Full Stack Engineer (AI/LLM)

Writer

Jan 2024 - Current (2 years 10 months)

Building enterprise AI platform, enabling organizations to create secure AI applications, domain-specific agents, and workflow automation using proprietary knowledge and enterprise systems.
• Led development of Agent Builder, enabling enterprise administrators to create domain-specific AI agents that combined enterprise knowledge, business rules, and external tools without writing code.
• Designed and delivered end-to-end capabilities for AI Studio, allowing customers to configure prompts, define workflows, manage reusable tools, and deploy AI applications across business teams.
• Built Python/FastAPI services powering Palmyra inference workflows, supporting prompt orchestration, structured outputs, model routing, asynchronou

Senior Software Engineer

Nubank

Jan 2021 - Dec 2023 (3 years)

Built customer-facing credit card platform capabilities that enabled millions of customers to manage card activity, transaction security, spending controls, and dispute resolution while supporting real-time authorization platform.
• Led development of Card Controls, enabling customers to instantly lock or unlock cards, configure spending limits, manage international usage, and control contactless payments directly from the mobile app.
• Built backend services for Real-Time Authorization, evaluating transaction requests against customer preferences, available limits, fraud signals, merchant restrictions, and card status before returning authorization decisions within strict latency targets.
• Developed Dispute Center, allowing

Software Engineer II

VTEX

Oct 2017 - Dec 2020 (3 years 3 months)

Built core capabilities for enterprise commerce platform, helping global retailers manage order fulfillment, inventory visibility, marketplace integrations, and post-purchase operations across multiple sales channels.
• Developed the Merchant Operations Console, allowing operations teams to investigate delayed orders, resolve fulfillment exceptions, manage split shipments, and monitor inventory availability across multiple warehouses.
• Built Python/FastAPI backend services that coordinated inventory reservation, warehouse allocation, shipment status, and order synchronization across distributed commerce services.
• Designed REST and GraphQL APIs supporting integrations with ERP platforms, warehouse management systems (WMS),

W

Software Engineer

Wellhub (Gympass)

Jun 2015 - Sep 2017 (2 years 4 months)

Built a corporate wellness platform that helped enterprise customers manage employee wellness programs, fitness memberships, partner gyms, and benefit eligibility across global organizations.
• Developed core capabilities for the Corporate Admin Portal, enabling HR administrators to onboard employees, manage wellness plans, assign corporate memberships, and monitor benefit utilization across multiple office locations.
• Built Python backend services that synchronized employee eligibility, membership status, and billing information between enterprise HR systems, payment providers, and Gympass partner networks.
• Developed the Employee Wellness Portal, allowing employees to discover nearby fitness partners, activate memberships

About

Detail

Timeline

Résumé

Alexander Ng

About

Detail

Behavioral traits