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VISHAL JAGAMANI

Software Development Engineer - I

About

I'm a Software Development Engineer with 4+ years of experience in building scalable, user-centric web applications, microservices, and AI-powered workflows. I specialize in developing seamless frontend interfaces across multi-portal architectures, robust Backend-for-Frontend (BFF) layers, and resilient backend services using React, Next.js, Node.js, Express, and TypeScript, backed by distributed databases and cloud services like DynamoDB, AWS and MySQL.

My core skill set includes JavaScript, TypeScript, Node.js, Express, React, and Next.js (App Router), alongside practical experience in LLM provider integration (OpenAI and Gemini APIs) for automated document analysis and human-in-the-loop verification. I am well-versed in building event-driven pipelines (AWS SQS, S3), DynamoDB data modeling, RESTful API design, Strategy and Factory design patterns, unit testing with Jest, and progressive feature delivery using feature flags.

Explore my portfolio to learn more about the systems and applications I've built, the engineering challenges I've tackled, and how I approach solving complex real-world problems through high-reliability software. I'm always open to collaborating on impactful engineering initiatives or joining forward-thinking teams—let's connect!

Experience

July 2025 - Present

Software Development Engineer - I

Nineleaps (Client - Dataflow)

  • Owned full-stack feature delivery on the Agent Automation platform across React portals, an Express/TypeScript BFF layer, and Node.js microservices.
  • Built AI-assisted verification workflows, leveraging LLMs to extract attribute data and surface real-time quality nudges to operations performers.
  • Engineered automated document insufficiency detection and self-service features, providing real-time document validation and instant feedback across multiple portals.
  • Architected a dedicated document validation microservice using Strategy and Factory patterns, integrating a multi-provider LLM abstraction layer (OpenAI).
  • Designed and delivered an event-driven analytics pipeline using DynamoDB, AWS SQS, and S3 to monitor and report agent performance.
  • Implemented frontend resilience patterns and bounded polling mechanisms to handle asynchronous workflows, releasing features progressively behind feature flags.
  • Diagnosed and resolved critical production incidents using CloudWatch Logs Insights, executing timely data mitigations to ensure platform reliability.

ReactJS

NextJS

Typescript

NodeJS

Express

DynamoDB

AWS (S3/SQS/CDK)

OpenAI API

CloudWatch

Jest

July 2022 - July 2025

Software Developer

PortDev India Pvt. Ltd. (Portqii)

  • Developed and maintained full-stack web applications using Node.js, Express, TypeScript, and React.
  • Built and optimized RESTful APIs with Express; implemented secure authentication using JWT and Auth0.
  • Improved application performance by integrating Elasticsearch, reducing data retrieval time by 40%.
  • Created scalable RESTful APIs with Express, secured using JWT and Auth0.
  • Created scalable RESTful APIs with Express, secured using JWT and Auth0.

ReactJS

NodeJS

Express

Typescript

MySQL

Elasticsearch

LinkedIn API

Shopify API

March - June 2022

Software Developer (Intern)

PortDev India Pvt. Ltd. (Portqii)

  • Built a full-stack To-Do application using React, Node.js, Express, and MySQL during training; practiced REST API development and authentication.
  • Contributed to a production-level feature in an enterprise app using Java Spring Boot and MySQL, collaborating with the backend team in Agile sprints.

ReactJS

NodeJS

Express

MySQL

Java

Projects

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Portfolio

Developed a responsive frontend using React, TypeScript, Vite, and ShadcnUI. Implemented SEO best practices and deployed the site on Vercel for optimal performance.

ReactJS

NextJS

Tailwind CSS

Vercel

JavaScript

TypeScript

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Soundtrack

Built a full-stack application integrating the Spotify API for browsing music. Developed secure backend services using Node.js, Express, and JWT-based authentication. Utilized MongoDB for data persistence and React with Vite for an interactive UI.

ReactJS

Vite

Tailwind CSS

NodeJS

Express

MongoDB

Spotify API

Javascript

TypeScript

Node

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Vinay Gouri Portfolio

A freelance project for Vinay Gouri, a Senior Product Designer, to build his portfolio website. The website showcases his design work, experience, and projects in a visually appealing and professional manner.

ReactJS

NextJS

Tailwind CSS

Vercel

JavaScript

TypeScript

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MailSense

Built a full-stack email aggregator that unifies multiple email accounts into a single inbox. Implemented Gmail and Outlook integrations, secure authentication with Auth0, email sync and management features, and a responsive dashboard for inbox, account, folder, and settings management.

NextJS

ReactJS

TypeScript

Tailwind CSS

NodeJS

Express

MongoDB

Auth0

Gmail API

Outlook API

JavaScript

TypeScript

Node

DataFlow - AI Credential Verification Platform

An enterprise background and credential verification platform powered by LLM-backed agent workflows. Delivered full-stack capabilities across multiple React portals, an Express BFF layer, and Node.js microservices—enabling AI verification assistance, automated document validation, and event-driven analytics pipelines.

ReactJS

NextJS

TypeScript

NodeJS

Express

DynamoDB

AWS (S3/SQS/CDK)

OpenAI / Gemini

OpenSearch

TypeScript

JavaScript

Node

Contact

🚀 Contact me for your next Project or Query!

While I'm currently dedicated to my full-time role at Nineleaps Solutions Pvt. Ltd., but I'm always excited about collaborating on side projects and queries in web development, cloud infrastructure, or software architecture. Need assistance or collaboration? Let's connect!