Software Engineer · Amazon · New York

Siddesh Nageswaran

For 6+ years I've architected and led the systems behind customer-facing products: high-traffic platforms serving millions of requests an hour, multi-tenant integrations, and the cross-organizational work it takes to ship them.

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01 About

I do my best work on ambiguous problems. I take them from a blank page to production: framing the problem, writing the design, building the solution, and owning it long after launch.

Wherever it makes sense, I turn one-off solutions into platforms other teams can rely on: a UI framework any page can adopt without changes, or a signup flow other businesses can plug into.

I'm also constantly auditing how my team works and finding ways to improve it. That led me to found our shared AI toolkit, an agent with team-specific skills and SOPs for investigating production issues and researching designs, and to build oncall automations that take repetitive diagnosis work off the team's plate.

My leadership is built on alignment. I write things down, bring partner teams in early through design reviews and regular syncs, and make trade-offs explicit so decisions stick. Across all of it, I hold a high bar for clear interfaces, measurable outcomes, and leaving systems simpler than I found them.

Outside of work, I build small products end to end, a few of which are in the projects section below.

02 Experience

  1. Jul 2022 – Present

    Amazon

    Amazon Grocery · New York, NY

    • Software Development Engineer IIMar 2024 – Present
    • Software Development Engineer IJul 2022 – Mar 2024
    • Architected and own the platform that renders grocery subscription upsells to Amazon customers, the primary source of grocery subscription signups.
    • Led a cross-organizational effort to bring the first non-Prime subscription onto Prime's signup flow, re-architecting it into a multi-tenant platform. The integration significantly increased signups and ordered product sales, and has since expanded to the checkout surfaces that drive most signups.
    • Engineered the backend API and customer-facing widgets for a new digital punch card loyalty program, taking it from concept to a large-scale pilot with expansion beyond subscribers planned.
    • Designed and launched intelligent one-click reordering from the order details page, establishing the first grocery ordering framework outside of checkout.
    • Drove the expansion of payment over-authorization into the EU and Asia, reducing bad debt.
    • Proposed and built an automated framework for bulk diagnosis of stuck payments. After the team adopted it, time-to-diagnosis dropped substantially.
    • Founded and maintain the team's shared AI agent toolkit, with reusable skills and SOPs for investigating production issues, speeding up design research, and automating recurring team processes.
    • Serve as scrum master for a team of seven (planning, estimation, backlog grooming) and share on-call for high-traffic services across North America, Europe, and Asia.
  2. Jun 2020 – Jul 2022

    Morgan Stanley

    Institutional Securities Technology · New York, NY

    • Full-Time AnalystAug 2021 – Jul 2022
    • Summer AnalystJun 2020 – Aug 2020
    • Maintained a real-time quantitative platform that performs risk analysis for traders.
    • Migrated the codebase to Scala ZIO, increasing test coverage of essential functionality.
    • Pioneered the use of Spark on Databricks for the team's data processing and presented the results to senior technology leaders.

03 Projects

Selected work from Amazon, plus personal projects I designed, built, and run myself.

Professional

Grocery Subscription Upsell Platform

  • Primary source of signups
  • 14+ placements

I designed the dynamic upsell platform for grocery subscriptions, served as its sole architect, and later led the engineers who joined to scale it. It replaced static marketing banners with upsells that adapt to each customer and offer, now serves millions of requests an hour, and is expanding to other businesses.

  • No-code configuration. I built a configuration layer behind an existing internal tool, so marketing changes messaging and targeting without any engineering work.
  • Drop-in anywhere. One front-end template works on any Amazon page with no page-side changes, backed by the same interface as our existing subscription pages.
  • Native targeting. Works with Amazon's content filtering and ranking systems, so upsells compete for high-demand placements alongside other content.
  • Off the critical path. Loads asynchronously from the host page, with a dynamically tunable cache in front of subscription data to absorb throttling.
  • Java
  • TypeScript
  • AWS
  • System architecture
  • High-throughput services
  • Data orchestration
  • Server-side rendering
  • A/B testing

Inline Signup for Grocery Subscriptions

  • ↑ Signups
  • ↑ OPS
  • 2 fewer redirects

I led the cross-organizational effort to replace our bespoke, multi-redirect signup flow with an inline one built on Prime's robust, battle-tested signup flow. The core challenge was unifying the logic of two different subscription providers, which I solved by re-architecting the flow into a multi-tenant platform that other subscriptions can now plug into.

  • Faster signup. I replaced two page redirects with a single inline popover, so customers sign up in milliseconds without leaving the page they're on.
  • Generic core, tenant hooks. Shared fulfillment and rendering logic covers the common case, and tenants plug in their own business logic only where it doesn't fit.
  • Replaceable components. I split fulfillment into independent components so tenants can adopt the shared logic one piece at a time.
  • Cross-org alignment. I ran design reviews and weekly syncs across Prime, Digital Ordering, and other subscription businesses such as Alexa and Ring.
  • Java
  • TypeScript
  • Multi-tenant design
  • Platform design
  • Cross-org leadership
  • A/B testing

Personal

Spotify Heardle

Desktop app

A take on the music-guessing game Heardle that uses any Spotify playlist as the song bank. Fetches tracks and audio previews via Spotify's public embeds through Electron's main process, with persisted game state and shareable results.

  • TypeScript
  • React
  • Electron
  • Zustand
  • styled-components
Code →

City Bingo

Web app · PWA

A real-world scavenger hunt where teams race to complete a 5×5 grid of city challenges. Live leaderboards sync across every team in real time, organizers run games from an admin dashboard, and push notifications go out via a serverless edge function.

  • TypeScript
  • React
  • Supabase
  • PostgreSQL
  • Web Push
  • Vitest
Code →

Rental Alert Helper

Full-stack web app

Save StreetEasy rental searches and get notified of new listings by Discord or email. A scheduled serverless backend scans active alerts, fetches current listings, de-duplicates against what each user has already seen, and cleans up stale data. It all runs on free-tier infrastructure.

  • TypeScript
  • React
  • Supabase
  • PostgreSQL
  • Serverless
  • Vitest
Code →

See all repositories on GitHub →

04 Skills

Languages

  • Java
  • TypeScript
  • JavaScript
  • Python
  • Scala
  • C++
  • C
  • C#
  • OCaml
  • HTML/CSS

Technologies

  • Claude Code
  • Kiro
  • MCP
  • AWS
  • CDK
  • CloudFormation
  • Lambda
  • ECS
  • CloudWatch
  • SQS
  • DynamoDB
  • S3
  • React
  • Node.js
  • PostgreSQL
  • Spark
  • Git

Areas of expertise

AI

  • AI agent development
  • Agentic workflows
  • Prompt engineering

Architecture

  • Software architecture
  • API design
  • Microservices
  • Distributed systems
  • Multi-tenant platforms

Delivery

  • A/B testing
  • CI/CD
  • Observability
  • Operational excellence

Leadership

  • Technical leadership
  • Cross-org collaboration
  • Technical writing
  • Mentoring

05 Education

  1. 2017 – 2021

    Carnegie Mellon University

    Pittsburgh, PA

    • Double major in Electrical & Computer Engineering and Computer Science, minor in Business.
    • Cumulative GPA: 4.0 / 4.0.

    Relevant coursework

    • Embedded Systems
    • Compiler Design
    • Computer Architecture
    • Low-Level Systems
    • Parallel Algorithms
    • Machine Learning
    • AI
    • Language Design
    • Functional Programming
    • Graph Theory
    • Complexity Theory
    • Probability Theory
    • Linear Algebra
    • 3D Calculus

06 Contact

I'm always happy to talk about platform design, distributed systems, or whatever you're working on. Email is the fastest way to reach me.

siddesh.nageswaran@gmail.com LinkedIn GitHub