Irfan Khan

Senior Software Engineer

01/2021 - Present

Rootstrap, Los Angeles, CA (Remote)

• Worked as a full stack developer following agile methodology handling diverse responsibilities throughout time at Rootstrap.
• Utilized a range of technologies including HTML, CSS (SCSS), JavaScript, TypeScript, and various frameworks like React, Angular, and Node.js/Express.js on backend.
• Implemented AI-driven solutions using LangChain and LangGraph for intelligent agents and task automation workflows.
• Employed Angular framework skills to develop single-page applications (SPAs), integrating key technologies such as RxJS, Ngxs/Ngrx for state management, as well as comprehensive understanding of form handling, observables, signals, and modular architecture.
• Extensive experience with React JS, demonstrating proficiency in core React concepts including component-based architecture, form handling, event handling, routing, and animation. Utilized Redux/RTK for efficient state management while integrating Material UI for enhanced user interface experiences.
• Applied Retrieval-Augmented Generation (RAG) techniques to improve data relevance and user experience. Integrated vector databases like ChromaDB and pg-vector to support semantic search and knowledge retrieval.
• Designed and implemented robust REST and GraphQL architecture-based web services utilizing Node.js, Nest.js framework and FAST API for Python-based AI services. MySQL and Sequelize.
• Leveraged .NET technologies such as ASP.NET, C#, and MSSQL Server for application development.
• Implemented modern headless CMS solutions such as Strapi, Keystone, Contentful, and WP Rest, GraphQL API.
• Worked on popular AWS cloud services such as EC2, ECS, S3 and serverless architecture AWS Lambda.
• Implemented payment systems such as Stripe, Paypal on various SAS applications.
• Implemented automated tests: unit tests, integration tests, and e2e automated UI tests.
• Documented codebase comprehensively, including technical and operational aspects, to facilitate seamless knowledge transfer and future development efforts.

Web Developer

08/2017 - 12/2020

Everest Group, Dallas, TX

• Responsible for creating efficient design and developing user interactive screens using a stack comprising HTML, CSS3, Bootstrap, JavaScript, and TypeScript, coupled with frameworks like Angular, React.
• Engineered robust back-end APIs using Node.js, and Express to support various front-end applications.
• Contributed to a project involving the conversion of class-based React components to Typescript functional components, leveraging hooks for improved performance and code readability.
• Delivered test-driven and reliable solutions employing frameworks like Jest and Jasmine/Karma for effective testing across Node.js, Angular, and React environments.
• Contributed to a project involving the conversion of Angular.js to Angular 6.
• Practiced in Agile and Scrum methodologies, with a solid understanding of version control systems, and Project Management tools such as Jira, Asana, and Gitlab.
• Installed, configured, and maintained. Laravel, PHP, Apache, and MySQL based projects on AWS cloud servers.
• Played a pivotal role in the core development team, offering crucial support for internal projects and systems.
• Extensively used Git for version controlling and regularly pushed the code to GitHub.
• Worked on building desktop and web applications in .NET framework (ASP.NET and WinForm/WPF desktop), Entity Framework, ADO.NET and Microsoft SQL Server.

Master's in Electrical and Computer Engineering

2014 - 2017

Carnegie Mellon University, Pittsburgh, PA