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Résumé

Senior Software Engineer

Seattle, WAlinkedin.com/in/lucasarangogithub.com/aranlucas

Summary

Senior software engineer with 10+ years at DoorDash, AWS, and Amazon, building AI agent platforms and cloud services. Led Ask DoorDash's grocery agent from prototype to launch; built shared agent infrastructure and set reliability standards across teams.

I’m interested in senior and staff engineering roles where I can help shape a product, build it, and make it dependable.

Experience

  1. DoorDash

    Oct 2023 – Aug 2026

    Senior Software Engineer, Seattle, WA

    • Prototyped and led engineering for Ask DoorDash's grocery agent, launched June 2026. It converts recipe links and photos into personalized carts across roughly 800,000 products, increasing average order totals.
    • Owned New Verticals agent infrastructure and reliability, including the grocery agent and shared Model Context Protocol (MCP) tools used by the restaurant agent, DoorDash's ChatGPT integration, and developer CLI.
    • Wrote the agent-platform strategy and secured leadership support to expand from external MCP grocery ordering to the in-app Assistant, coordinating delivery across engineering, ML, product, and design.
    • Built DashMart's integration-test framework on isolated test tenants and migrated execution from Jenkins to Buildkite on Kubernetes. Set org-wide performance standards with golden-path SLOs and blocking CI regression gates.
    • Mentored New Verticals engineers on agent architecture and MCP tool design. Drove adoption of Claude Code and Codex with architecture and security review before merge.

  2. Amazon Web Services (AWS)

    Jul 2019 – Jul 2022

    Software Development Engineer – AWS IoT, Seattle, WA

    • Built the AWS IoT SiteWise Monitor control plane (Go, DynamoDB, API Gateway), announced at re:Invent; led operational readiness review and launched the service to general availability.
    • Cut AWS IoT Console release lead time from weeks to days by leading the Angular-to-React migration and establishing microfrontends with independent CDK deployment pipelines for 5+ sub-teams.
    • Designed SSO federation for SiteWise Monitor and built Synthetics canaries that caught console regressions before release.

  3. Amazon

    Jul 2015 – Jul 2019

    Software Development Engineer – Compliance Technologies, Seattle, WA

    • Built a case-management platform for anti-money-laundering and identity-theft investigations using Ruby on Rails and Java Spring, with end-to-end encryption, granular access controls, and audit logging.
    • Led design and development of suspicious-transaction reporting (STR/SAR) systems for the Luxembourg Financial Intelligence Unit and UK National Crime Agency, meeting requirements for Amazon payments in both markets.

  4. Amazon

    May 2014 – Aug 2014

    Software Development Engineer Intern, Seattle, WA

    • Integrated Kindle Unlimited books into Goodreads.

  5. BlackBerry

    Jan 2013 – Aug 2013

    Software Development Engineer Intern, Sunrise, FL

    • Tested BlackBerry handheld software (smoke, regression, GUI).

Personal projects

Multi-Agent Platform

  • Build and operate Go agents with Google ADK behind a Go gateway on Railway, using Cloudflare D1 for sessions and R2 for artifacts; Next.js/CopilotKit and Expo clients share agent state through AG-UI streaming.
  • Built a wellness agent that delegates to grocery and fitness agents through Google ADK task orchestration and shared typed state. The platform's grocery agent inspired the Ask DoorDash prototype.
Explore selected projects and source code

Writing

Skills

Languages
Java, Kotlin, TypeScript, Go, Python, Ruby, SQL
Platforms
AWS, CDK, DynamoDB, Cloudflare D1/R2, Docker, Kubernetes, Buildkite
Web/Mobile
React, Next.js, Expo, Java Spring, Ruby on Rails
AI/Agents
Google ADK, MCP, AG-UI, CopilotKit, Claude Code, Codex

Education

University of Florida

May 2015

B.S., Computer Engineering, cum laude, Gainesville, FL