Nikhil Singh

About Nikhil Singh

I’m a Software Engineer at Amazon building large-scale systems across supply chain, fulfillment, inventory transfer, and billing. My work sits at the intersection of distributed systems, operational excellence, and cross-functional architecture, where I lead ambiguous, high-impact initiatives from problem definition through production.At Amazon, I’ve led design and delivery across Buy with Prime, Multi-Channel Fulfillment, and Amazon Supply Chain programs, including fulfillment performance improvements, vendor-to-Amazon billing architecture, inventory transfer automation, and merchant-facing platform capabilities. My work has improved critical fulfillment latency, simplified complex architecture decisions, and helped unblock strategic launches spanning engineering, SCOT, finance, procurement, and security stakeholders. I’m especially strong in system design, event-driven architecture, microservices, and AWS-native development. I’m also building deeper expertise in AI-enabled engineering using Amazon Bedrock, Claude, prompt engineering, embeddings, internal MCP servers, and RAG-based workflows to improve developer productivity and technical problem-solving. I’m most energized by hard technical problems with high business ambiguity, especially where architecture, scale, and domain complexity meet.

Experience

1. Software Development Engineer Ii

   Amazon

   Jul 2021 — Present · Seattle, WA, US

   Lead design and delivery of high-scale systems across Buy with Prime, Multi-Channel Fulfillment, and Amazon Supply Chain, with focus on fulfillment, inventory transfer, merchant experience, and billing architecture.Improved fulfillment performance by driving asynchronous architecture changes that reduced CreateFulfillment P90 latency from 1,800 ms to 160 ms and improved shopper checkout-to-confirmation latency by 1.7 seconds.Authored end-to-end vendor-to-Amazon billing and accounting architecture spanning PO creation, confirmation, virtual receiving, invoicing, and ledger reconciliation across finance, procurement, and supply chain systems.Mentored engineers and acted as primary SME for implementation decisions across integrations involving SUP, VPS, IAP, and UCS.Influenced cross-team designs by identifying incorrect assumptions, simplifying overengineered proposals, and improving scalability for future inventory transfer and fulfillment use cases.Resolved high-impact operational issues in fulfillment and inbounding systems and drove durable fixes across dependent services.

Education

• University of Florida

  Senior Certificate Program, Computer and Information Sciences, General

  2016 — 2016

• University of Florida

  Master's degree, Computer Science

  2016 — 2017

• Jaypee Institute of Information Technology, Noida

  Bachelor's degree, Computer Science

  2012 — 2016

Skills

• Javascript
• Php
• Cascading Style Sheets (Css)
• Mysql
• Software Development
• Python
• Codeblocks
• Html5
• Html
• Adobe Illustrator
• Linux
• Ruby on Rails
• Jquery
• C++
• Oracle Sql Developer
• C
• Matlab
• Adobe Photoshop
• Java
• Ruby
• Unix
• Microsoft Office