Nisarg Shah  ยท  SDE I @ American Express

I build full-stack
apps that scale.

I'm a full-stack developer โ€” I craft React frontends and design distributed systems: microservices handling 1M+ daily requests, data pipelines processing 300K records a day. I also build AI workflows, including the agentic workflows I'm working on right now. Node.js, React, AWS, MongoDB. MS in Computer Science from Indiana University.

1M+

Daily requests

300K

Records / day

40%

Manual effort cut

150+

People โ†’ monthly pay

01 โ€” About

I like systems that stay up when it matters.

I'm Nisarg Shah, a Software Development Engineer who thinks in terms of scale, reliability, and clean architecture. With a Master's in Computer Science from Indiana University, I specialize in full-stack engineering โ€” from polished React interfaces to the backend APIs, cloud infrastructure, and distributed systems that power them.

I've engineered microservices that cut data inconsistencies by 70% and scaled apps to millions of daily requests. Along the way I picked up top ranks at the IBM Hack Challenge and the IIT Madras Hackathon โ€” I enjoy a good hard problem. Lately, most of my building has been in AI: I've created a range of AI workflows, and right now I'm deep into agentic workflows.

Currently

  • โ†’  SDE I @ American Express
  • โ†’  Based in Tempe, Arizona
  • โ†’  MS Computer Science, Indiana University
  • โ†’  Building AI & agentic workflows
Nisarg Shah
That's me โ€” probably debugging

02 โ€” Experience

Work that shipped.

Nov 2025 โ€” Present

Current

Software Development Engineer 1

American Express โ€” Phoenix, AZ

  • Engineered an internal tool that remediates dozens of security vulnerabilities, strengthening application security posture.
  • Designed algorithms that automated internal data tagging, reducing manual effort by 40%.
  • Built a dashboard platform that transitioned 150+ employees from quarterly to monthly pay cycles.

Jun 2025 โ€” Nov 2025

Senior Consultant

Heartland Community Network โ€” Remote

  • Engineered Node.js REST APIs with MongoDB to support 5K+ expected users, laying scalable backend foundations for a social food app.
  • Elevated backend quality with TDD practices, adding 10+ unit tests to keep production code robust and reliable.
  • Managed Agile Jira workflows at 15+ tickets per sprint, aligning React APIs to ship 10+ planned features with fewer integration errors.

Jan 2024 โ€” Jun 2025

Accessibility Specialist

UITS ยท Indiana University โ€” Bloomington, IN

  • Led WCAG 2.1 AA compliance for 100+ converted documents with Siteimprove, removing critical accessibility barriers for 1,000+ users with disabilities.
  • Ran usability testing with assistive-technology users to catch issues automated audits missed.
  • Built a prioritized conversion workflow with colleagues that cut conversion time by 20%.
  • Documented accessibility standards and procedures, streamlining future conversions for the team.

May 2024 โ€” Aug 2024

Software Development Engineer Intern

Kelley School of Business โ€” Bloomington, IN

  • Engineered a high-performance web scraping system processing 300,000 records daily, improving data collection efficiency by 40% with async Node.js.
  • Architected a distributed backend pipeline with microservices, reducing data inconsistencies by 70%.
  • Optimized MongoDB operations, cutting query time from 2s to 800ms with efficient schemas and Mongoose models.

May 2022 โ€” Jul 2023

Jr. Software Developer

Capri Technosys โ€” Gujarat, India

  • Refactored a legacy monolith into a distributed multi-tiered system with Java and Spring Boot โ€” API response time down 70% (500ms โ†’ 150ms), capacity up to 1M daily requests.
  • Built serverless endpoints with AWS Lambda and API Gateway alongside the MLOps team, cutting operational costs by 30%.
  • Wrote automation that scraped 58,000+ websites for a fraud-detection model, accelerating execution 68% (8h โ†’ 2.5h) via multi-threading and connection pooling.
  • Automated web interactions with Jsoup and Selenium, reducing manual testing from 40 to 12 hours weekly.
  • Expanded API test coverage from 500 to 700 endpoints with Postman, improving bug detection per sprint.

Nov 2022 โ€” Jun 2023

Part-Time Research Intern

DAIICT โ€” Gandhinagar, India

  • Scraped 1.5M tweets on inflation with APIs and Selenium; optimized MongoDB retrieval with a tailored schema.
  • Hit 77% accuracy on inflation sentiment analysis using BERT embeddings.
  • Extracted inflation topics with BERTopic, boosting accuracy 60% through manual annotation and tuning.

Education

MS, Computer Science

Indiana University โ€” Aug 2023 โ†’ May 2025

BE, Computer Engineering

Kadi Sarva Vishwavidyalaya โ€” Jul 2019 โ†’ Jul 2023

03 โ€” Projects

Built on weekends,
run in production.

Event Venue Management System

/01

Event Venue Management System

A scalable event platform on a modern microservices architecture โ€” React frontend, Node.js backend, Redis for caching and sessions, Docker containers, and GitHub Actions CI/CD for smooth deployments.

ReactNode.jsMicroservicesRedisDockerCI/CD
View on GitHub โ†—
YouTube Data Engineering Pipeline dashboard

/02

YouTube Data Engineering Pipeline

A distributed pipeline analyzing trending YouTube videos across regions โ€” AWS Glue for ETL, Lambda for automation, Athena for querying, and QuickSight dashboards so creators can make data-driven decisions.

AWS GlueLambdaAthenaQuickSightETL
View on GitHub โ†—
Expense Manager app

/03

Expense Manager

A web-based expense tracker built with Java Servlets and JSP โ€” transaction management, bank account sync, and Chart.js visualizations, with tuned MySQL queries and connection pooling for a snappy cross-device experience.

JavaServletsJSPMySQLChart.js
View on GitHub โ†—

04 โ€” Stack

The tools I reach for.

Languages & Frameworks

Node.js ยท React ยท Java ยท Spring Boot ยท Express ยท JavaScript/TypeScript

Data

MongoDB ยท PostgreSQL ยท MySQL ยท Redis

Cloud & DevOps

AWS Lambda ยท API Gateway ยท Glue ยท Athena ยท Docker ยท GitHub Actions ยท CI/CD

Data, ML & AI

ETL pipelines ยท BERT / NLP ยท BERTopic ยท AI & agentic workflows

Practices

REST/GraphQL APIs ยท Microservices ยท Caching ยท TDD ยท WCAG 2.1 AA

More

See everything
on GitHub โ†—

05 โ€” Contact

Have a role or a project in mind?

Let's talk.

1831 E Apache Blvd, Tempe, AZ โ€” replies within a day