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Sanjay Negi
Verified Expert in Engineering
Node.js Developer
New Delhi, Delhi, India
Toptal member since May 28, 2020
Bio
Sanjay is a software developer with over six years of experience in full-stack web development, including expertise in React, Vue, Angular, Node.js, Next.js, Express.js, and SQL/NoSQL databases. He has hands-on experience working with cloud platforms such as Google Cloud Platform (GCP) and AWS. In his projects, Sanjay has utilized services like Firebase, Firestore, Cloud Run, Google Cloud Functions, Amazon S3, and Lambda.
Portfolio
Esri
Sass, HTML, TypeScript, JavaScript, Vuex, Vue, React, Tailwind CSS...
Freelance
Node.js, Next.js, TypeScript, Prisma, React, HTML, CSS, JavaScript...
Blueprint Stats
JavaScript, Vue, Node.js, Firebase, Vuex, HTML, HTML5, CSS, SCSS...
Experience
- Full-stack - 9 years
- Node.js - 9 years
- Back-end - 7 years
- JavaScript - 5 years
- TypeScript - 3 years
- AI Agents - 2 years
- LangGraph - 2 years
- Agentic AI - 2 years
Work Experience
Senior Software Engineer
2020 - PRESENT
Esri
- Led the development efforts of ArcGIS Enterprise on the Kubernetes Manager product.
- Developed and maintained the ArcGIS Notebooks product.
- Mentored and trained junior developers and managed their onboarding.
Technologies: Sass, HTML, TypeScript, JavaScript, Vuex, Vue, React, Tailwind CSS, ECMAScript (ES6), Redux, Front-end, React Redux, Redux Toolkit, User Experience (UX), User Interface (UI), Web Development, Front-end Development, Vuetify, Figma, JSON, Single-page Applications (SPAs), HTML5, API Integration, REST, Responsive Web Design (RWD), Architecture, Integration, Web, GitHub, Vue 3, Application State Management, Axios, UI Development, LangChain, AI Agents, Agentic AI, LangGraph, Full-stack, Back-end, Python, Node.js
Full-stack Developer
2022 - 2023
Freelance
- Developed a robust back end for a live data recording platform.
- Led the development of the front end to accomplish real-time data collection. Implemented a plethora of complex data collection workflows, ensuring a seamless and efficient user experience.
- Did Strapi API integration with a Nuxt.js-based back end.
Technologies: Node.js, Next.js, TypeScript, Prisma, React, HTML, CSS, JavaScript, ECMAScript (ES6), Redux, PostgreSQL, Front-end, REST APIs, React Redux, Redux Toolkit, User Experience (UX), User Interface (UI), Web Development, Front-end Development, Figma, JSON, Single-page Applications (SPAs), HTML5, APIs, SQL, API Integration, NoSQL, REST, Responsive Web Design (RWD), Architecture, Integration, Web, GitHub, Pinia, Vue 3, Application State Management, UI Development, Full-stack, Back-end
Full-stack Developer
2021 - 2022
Blueprint Stats
- Developed a user interface to facilitate the recording of basketball game statistics and to provide an interface for players and coaches to visualize various calculated stats and skills. Using Vue, Vuex, TypeScript, Vuetify, HTML, and CSS.
- Built the back end using Node.js, Firebase, AWS Lambda, Amazon S3, Google Cloud Run, and Google Cloud Functions.
- Refactored the existing cloud functions to enhance modularity and promote reusability.
- Integrated the Vuetify framework into the existing UI and refactored the Vuex store for modularity.
- Implemented unit testing for the back end using Jest and the front end, incorporating Vitest to ensure comprehensive test coverage.
Technologies: JavaScript, Vue, Node.js, Firebase, Vuex, HTML, HTML5, CSS, SCSS, Amazon Web Services (AWS), Firebase Cloud Functions, Google Cloud Platform (GCP), Google Cloud, Full-stack, Back-end, Stripe API, Stripe, Next.js, Tailwind CSS, Full-stack Development, ECMAScript (ES6), Front-end, REST APIs, Payment Gateways, User Experience (UX), User Interface (UI), Data Visualization, Web Development, Front-end Development, Vuetify, Figma, JSON, Single-page Applications (SPAs), APIs, API Integration, NoSQL, AWS Lambda, REST, Responsive Web Design (RWD), Architecture, Integration, Web, Google Maps API, Marketplaces, GitHub, Application State Management, UI Development
Angular Developer
2020 - 2021
Freelance
- Developed an Angular front end for a human resource marketplace.
- Developed a video calling feature using Amazon Chime SDK for JavaScript.
- Developed an interactive chat interface using Firebase cloud messaging.
- Developed an Angular universal app for SEO-friendly public pages.
Technologies: Amazon S3 (AWS S3), CSS, TypeScript, JavaScript, Cloud Firestore, Bootstrap, Angular Universal, Angular Material, SDKs, Firebase, SCSS, HTML, Angular, Amazon Web Services (AWS), Firebase Cloud Functions, Google Cloud Platform (GCP), Google Cloud, Stripe API, Stripe, ECMAScript (ES6), Front-end, Payment Gateways, User Experience (UX), User Interface (UI), Web Development, Front-end Development, JSON, Single-page Applications (SPAs), HTML5, API Integration, NoSQL, AWS Lambda, REST, Responsive Web Design (RWD), Integration, Web, Google Maps API, Marketplaces, GitHub, Application State Management, UI Development
Full-stack Developer
2018 - 2020
Infosys
- Developed a data warehouse reporting tool using the MEAN stack.
- Developed a document management web app using the MEAN stack.
- Contributed to testing and deployment using Jenkins, OpenShift cloud platform, and IBM uRelease and uDeploy.
Technologies: REST, Databases, APIs, NgRx/store, NgRx, HTML, Jenkins, jQuery, Git, SQL, CSS, Angular, TypeScript, OpenShift, Angular Material, Bootstrap, Express.js, MongoDB, Node.js, JavaScript, Full-stack, Back-end, MySQL, Full-stack Development, ECMAScript (ES6), Front-end, REST APIs, User Experience (UX), User Interface (UI), Web Development, Front-end Development, JSON, Single-page Applications (SPAs), HTML5, API Integration, NoSQL, Responsive Web Design (RWD), Architecture, Integration, Web, GitHub, Application State Management, UI Development
Web Developer
2019 - 2019
Freelance
- Developed a visitor management system front end for hotel check-in.
- Used Angular, Angular Material, HTML, and CSS to develop a responsive UI.
- Used Git for version control and Karma and Jasmin for unit testing.
Technologies: TypeScript, JavaScript, NgRx/store, NgRx, CSS, HTML, Angular, ECMAScript (ES6), Front-end, User Experience (UX), User Interface (UI), Web Development, Front-end Development, JSON, Single-page Applications (SPAs), HTML5, API Integration, REST, Responsive Web Design (RWD), Integration, Web, GitHub, Application State Management, UI Development
Software Developer
2017 - 2018
MapmyIndia
- Developed software using Python for new flyover detection to avoid manual surveying of roads.
- Developed a full-stack (Angular and Node.js) web app to monitor and run the flyover detection pipeline.
- Did pattern extraction, outlier detection/removal, classification, clustering, data visualization, and analytics using Python, Pandas, sklearn, Numpy, Matplotlib, etc.
Technologies: REST, TypeScript, Databases, APIs, HTML, jQuery, SQL, CSS, Angular, PostgreSQL, Express.js, Bootstrap, Node.js, Python, JavaScript, Back-end, MySQL, Full-stack, Full-stack Development, ECMAScript (ES6), Front-end, REST APIs, User Interface (UI), Data Visualization, Web Development, Front-end Development, JSON, Single-page Applications (SPAs), HTML5, API Integration, Architecture, Integration, Web, GitHub, UI Development
Project History
Data Warehouse Reporting Tool
Developed a responsive UI and REST APIs for a data warehouse reporting tool, handling huge data sets with multiple data sources. Used Angular, Node.js, Express.js, and multiple relational data sources.
Document Management Web App
Developed a web application as a full-stack JavaScript developer using Angular, Node.js, Express.js, and MongoDB. The app provided an interface for creating and managing the document during its transition between different document lifecycle phases.
Flyover Detection
This project aimed to detect newly created flyovers without having to do manual surveys of the roads using GPS data.
My responsibilities included:
1 ) Data analysis and pattern detection and outlier removal using Python.
2) Created a dashboard to visualize and manage the above processes using Angular and Node.js.
My responsibilities included:
1 ) Data analysis and pattern detection and outlier removal using Python.
2) Created a dashboard to visualize and manage the above processes using Angular and Node.js.
Resource Marketplace
This was a project aimed at developing a marketplace for human resources. My contribution included laying out the app structure for Angular and developing different UIs for the app, video calling functionality using Amazon Chime SDK, interactive chat using Firebase cloud messaging, and an Angular universal app for SEO-friendly public pages.
Education
2013 - 2017
Bachelor of Technology Degree in Computer Science
Guru Gobind Singh Indraprastha University - Delhi, India
Skills
Libraries/APIs
Node.js, Vue, React, REST APIs, Vue 3, Firebase Web SDK, Vue 2, Vuex, NgRx, NgRx/store, Stripe API, Stripe, React Redux, jQuery, NumPy, Pandas, RxJS, Google Maps API
Tools
GitHub, Git, Angular Universal, Redux Toolkit, Figma, Jenkins, Slack, Firebase Cloud Messaging (FCM), Microsoft Teams, Prisma
Languages
JavaScript, HTML, CSS, Python, SQL, TypeScript, HTML5, ECMAScript (ES6), SCSS, Sass, C, C++, Java
Frameworks
Angular, Express.js, Next.js, LangGraph, Bootstrap, Angular Material, Tailwind CSS, Vuetify, Redux
Paradigms
REST, Responsive Web Design (RWD), Compiler Design
Platforms
AWS Lambda, Web, Firebase, Amazon Web Services (AWS), Windows, OpenShift, Google Cloud Platform (GCP), Visual Studio Code (VS Code)
Storage
JSON, NoSQL, MongoDB, PostgreSQL, Google Cloud, Amazon S3 (AWS S3), Cloud Firestore, Databases, MySQL
Other
APIs, Firebase Cloud Functions, Full-stack, Full-stack Development, Front-end, User Experience (UX), User Interface (UI), Web Development, Front-end Development, Single-page Applications (SPAs), API Integration, Architecture, Integration, Pinia, Application State Management, Axios, UI Development, LangChain, AI Agents, Agentic AI, Back-end, Payment Gateways, Data Visualization, Marketplaces, Algorithms, Data Structures, Operating Systems, Information Security, SDKs
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