Sanjay Patoliya

Senior Full Stack Engineer | AWS Certified

I help startups build scalable cloud-native SaaS products using FastAPI, React & AWS

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About

Senior software engineer building scalable, cloud-native systems on AWS. AWS Certified Solutions Architect with strong expertise in FastAPI, React, and modern microservices architectures. Proven track record of delivering high-performance systems and optimizing cloud infrastructure. Specialized in system design, DevOps, and infrastructure as code. Open to remote opportunities with global teams.

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Experience

Senior Software Developer

Jul 2025 - Present

Demand AI

▸Designed and developed scalable backend systems using FastAPI and NestJS
▸Built event-driven microservices to process asynchronous workloads via Amazon SQS
▸Developed high-performance REST APIs for internal and client-facing systems
▸Deployed cloud-native services on AWS using AWS CDK with automated CI/CD pipelines
▸Collaborated with product and design teams to deliver seamless user experiences
▸Ensured code quality through automated testing, peer reviews, and deployment best practices

Software Developer

Dec 2022 – Mar 2025

Nextbits Inc (Boston - United States) On-Site

Client: Best Buy

▸Built 30+ production-grade serverless APIs using AWS Lambda, API Gateway, and DynamoDB
▸Developed reusable TypeScript components and services using Angular’s component-based architecture
▸Upgraded legacy applications and bundles to the latest Symfony versions
▸Implemented unit and acceptance testing using PHPUnit and Codeception
▸Designed CI pipelines using Azure Pipelines to automate testing workflows
▸Implemented Infrastructure as Code (IaC) using Terraform for cloud automation
▸Configured CI/CD pipelines using AWS CodePipeline for seamless deployments
▸Developed unit tests using Jasmine and Karma to ensure frontend reliability
▸Built end-to-end tests using Cypress for full application validation

Software Developer

Aug 2021 - Nov 2022

Nextbits Inc

Client: CallPass

▸Developed UI for an asset tracking system using Angular, HTML5, CSS3, JavaScript, jQuery, AJAX, and JSON
▸Implemented reactive programming using RxJS, NgRx, Observables, and Subjects to simplify asynchronous workflows
▸Built responsive web pages using Bootstrap, Syncfusion, and Gridster components
▸Implemented HTTP communication using RxJS Observables to handle asynchronous data streams
▸Developed dashboards with custom widgets for reports and data visualization
▸Followed Test-Driven Development (TDD) practices using Cypress

Full Stack Developer

Apr 2018 – Jul 2021

Teclogiq (Ahmedabad)

▸Designed and developed a user-friendly admin dashboard for beacon location tracking and device range monitoring using Angular
▸Developed a user-friendly dashboard for a travel agency to manage passengers (PAX), transport, events, and locations using Angular with NgRx, RxJS, and Zorro components
▸Built custom Nextcloud (PHP) applications for selling digital products and video sessions with watermarking, custom player interactions, and theme customization using the LAMP stack
▸Integrated multiple microservices with custom Nextcloud applications using REST APIs, RabbitMQ message broker, and Keycloak SSO
▸Developed REST APIs using NestJS (Node.js) and integrated them with Angular frontend
▸Implemented OpenAPI specifications for REST APIs

Senior Front End Developer

Feb 2012 – Mar 2018

Alteatec IT Solutions Pvt. Ltd (Pune)

▸Led a front-end team of 3 developers for multiple sports betting platforms
▸Designed dynamic, cross-browser compatible web applications using HTML, CSS, jQuery, JavaScript, and AngularJS
▸Built single-page applications (SPA) using AngularJS modules, controllers, and directives
▸Developed user-friendly sportsbook interfaces using AngularJS, designed for integration across platforms via iframe
▸Implemented real-time odds updates using WebSockets
▸Integrated slot machine games for casino platforms
▸Developed mobile-friendly applications using Sencha Touch