LALucas Arango

Resume · Seattle, Washington

Lucas Arango

Senior Software Engineer — AI products & agents

Seattle, Washingtonaranlucas@gmail.com(786) 259-7659
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Summary

Software engineer with 10+ years shipping products at DoorDash, Amazon, and AWS, operating at staff scope: originating products from prototype to launch, setting performance and reliability standards adopted org-wide, and leading through influence across engineering, ML, product, design, and operations. Most recently pitched, prototyped, and led Ask DoorDash, the company's conversational AI shopping experience.

Senior / staff software engineer roles — big tech, AI-native, or fast-shipping product teams. Idea to launch, AI + real user problems, raising the quality bar. Not management.

Experience

  1. DoorDash — Senior Software Engineer

    Oct 2023 – Present

    Seattle, WA (Hybrid)

    • Originated Ask DoorDash (launched June 2026): pitched the vision for a conversational, agent-driven shopping experience, built the prototype that secured leadership buy-in, and served as lead engineer guiding delivery across engineering, ML, product, and design — natural-language search across ~800,000 items, personalized from order history and dietary preferences.
    • Drove DoorDash's external MCP integration for ChatGPT, extending catalog and commerce capabilities into assistant-driven discovery.
    • Optimized DashMart warehouse and fulfillment workflows for first-party convenience and grocery.
    • Built consumer-facing DashMart web personalization features for grocery and convenience discovery.
    • Drove a cross-org reliability program for core ordering and test infrastructure, including multi-tenant production-like E2E testing environments.
    • Defined org-wide performance standards — golden-path SLOs and performance-regression gates in CI.

    Key projects

    • Ask DoorDash — Conversational AI search for restaurants, groceries, and reservations — describe what you want, share a recipe link or cookbook photo, get personalized results.
    • DashMart Fulfillment & Personalization — Warehouse workflow optimization plus web personalization for the first-party convenience surface.
    • System Performance & Reliability — Org-wide SLOs, regression gates, and production-like test environments for high-traffic systems.
    Ask DoorDash announcementEngineering overviewE2E testing write-up

  2. Career Break — Intentional time off

    Jul 2022 – Oct 2023

    Seattle, WA

    • Recharged, traveled, and spent time outdoors — camping and climbing in the Cascade Range.
    • Stayed sharp through personal projects and self-directed learning before returning at DoorDash.

  3. Amazon Web Services — Software Development Engineer, AWS IoT

    Jul 2019 – Jul 2022

    Seattle, WA

    • Implemented and launched the public AWS IoT SiteWise Monitor control plane at re:Invent (DynamoDB, Golang, API Gateway) through operational readiness review to GA.
    • Led the IoT Console migration from Angular to React via microfrontends with independent CDK pipelines — 5+ sub-teams shipping independently, release lead time from weeks to days.
    • Designed and implemented SSO federation for SiteWise Monitor.
    • Built automated canary testing with AWS Synthetics for the IoT Console.

  4. Amazon — Software Development Engineer, Compliance Technologies

    Jul 2015 – Jul 2019

    Seattle, WA

    • Developed and launched a secure case management and investigation platform (Ruby on Rails, Java Spring) for internal investigations — money laundering, identity theft.
    • Hardened the platform with end-to-end encryption, granular auth, full audit logging, and secure artifact storage.
    • Led design and development of Suspicious Transaction Report (STR/SAR) submission to the Luxembourg FIU and UK NCA — a hard regulatory requirement for payments in those markets.

  5. Amazon — Software Development Engineer Intern

    May 2014 – Aug 2014

    Seattle, WA

    • Integrated Kindle Unlimited books into Goodreads.

  6. BlackBerry — Software Development Engineer Intern

    Jan 2013 – Aug 2013

    Sunrise, FL

    • Developed and maintained software for BlackBerry handhelds; smoke, regression, GUI, and functional testing on device hardware.

Personal Projects — Agentic Experiences

Building AI agents is my main hobby. I run a personal multi-agent platform in production, end to end:

  • Multi-agent monorepo (Google ADK-Go + AG-UI) — 11 typed Go agents behind a single Go gateway on Railway, with D1 session state and R2 artifact storage.
  • Full-stack agent UX — Next.js + CopilotKit web console and Expo iOS/Android app speaking AG-UI, with token-level streaming and generative UI.
  • Real-world tools and data — live Kroger and travel integrations; fitness plans from Health Connect snapshots.
  • Cross-agent orchestration — the wellness agent delegates to grocery and fitness agents in-process over shared typed state. The grocery agent shaped the vision for Ask DoorDash.

You're experiencing one right now — this resume Q&A is itself one of my agents. Try it.