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Dhruv Bansal
Verified Expert in Engineering
Full-stack Developer
Delhi, India
Toptal member since March 30, 2021
Bio
Dhruv is a full-stack web developer specializing in JavaScript, Python, Go, and Java programming languages. He has experience with various frameworks, including React, NestJS, Spring Boot, and Django. Dhruv has built multiple products from scratch and worked within teams to develop and deliver results to the stakeholders.
Portfolio
Deliveroo
Go, Amazon DynamoDB, Python 3, Flask, React, Next.js, Docker, Tailwind CSS...
Tarka Ventures, Inc.
Puppeteer, TypeScript, Node.js, Nx, Large Language Models (LLMs), PostgreSQL...
Factory Intelligent Solutions, LLC
Scraping, Puppeteer, JavaScript, Node.js, Serverless...
Experience
- JavaScript - 7 years
- Node.js - 7 years
- Amazon Web Services (AWS) - 7 years
- React - 7 years
- Docker - 6 years
- Python - 6 years
- Spring Boot - 2 years
- Java - 2 years
Preferred Environment
MacOS, Visual Studio Code (VS Code), Amazon Web Services (AWS), IntelliJ IDEA, Google Cloud Platform (GCP), Docker, GitHub, Cursor AI, GitHub Copilot Chat, Claude Code
The most amazing...
...platform I've designed and developed is a battery swapping platform with 2-way communication with the deployed IoT devices.
Work Experience
Senior Software Engineer
2025 - PRESENT
Deliveroo
- Enhanced the internal audience tool to support prospect targeting for vouchers, CRM, marketing, and more.
- Run an A/B experiment on the web app to increase sign-ups by 10% and sign-ins by 25% using Google One Tap login.
- Set up and run an A/B experiment for app banner placement in the web app to increase app downloads.
Technologies: Go, Amazon DynamoDB, Python 3, Flask, React, Next.js, Docker, Tailwind CSS, Test-driven Development (TDD), Responsive Layout, AWS Lambda, AWS Step Functions, Storyblok, Jest, Redux, CI/CD Pipelines, Ruby on Rails 7, Ruby
Puppeteer Expert
2025 - 2025
Tarka Ventures, Inc.
- Implemented SalesNav API to fetch and create contacts from the Search URL.
- Integrated the new messaging API to deprecate the legacy API implementation for fetching and sending messages.
- Calculated an ideal customer profile based on details using the OpenAPI API with structured responses.
Technologies: Puppeteer, TypeScript, Node.js, Nx, Large Language Models (LLMs), PostgreSQL, OpenAI API, Langfuse, Supabase, LinkedIn API, Generative Artificial Intelligence (GenAI), OpenAI, Jest
Scraping Developer
2024 - 2025
Factory Intelligent Solutions, LLC
- Enabled automated login flow for 20+ auto lenders who were behind 2FA security.
- Analyzed and standardized the data contract of all lenders for data ingestion and integration.
- Identified and collected login field identifiers for 300+ lenders to automate the login process and capture loan data.
Technologies: Scraping, Puppeteer, JavaScript, Node.js, Serverless, Amazon Simple Queue Service (SQS), Express.js, TypeScript, Docker, Third-party APIs, Python, Data Integration, Object-oriented Programming (OOP), Back-end, Pipelines
Team Lead
2024 - 2025
Cars24
- Developed a lead management dashboard for the entire customer conversion lifecycle, including dialer integrations.
- Built an order management system to handle all the orders created for the product.
- Integrated and worked across multiple microservices to achieve features like PDF generation, pay-in, pay-out, notifications, reports, and authentication.
Technologies: Node.js, Redis, Next.js, MySQL, NestJS, Python 3, Django, Pub/Sub, TeamCity, Datadog, Docker, Docker Compose, Java, Spring Boot, Hibernate, Spring Data JPA, wkhtmltopdf, Server-side PDF Generation, Single Sign-on (SSO), Tailwind CSS, Amazon RDS, Prisma, Kubernetes, Third-party APIs, Microservices Architecture, RESTful Microservices, Google Cloud Platform (GCP), Python, Data Integration, Object-oriented Programming (OOP), Snowflake, Amazon CloudFront, Containerization, Full-stack Development, Back-end, Spring Microservice, Technical Leadership, IntelliJ IDEA, Razorpay, Postman, RabbitMQ, Google Pub/Sub, Microservices, Apps, GitHub Actions, Pipelines, CI/CD Pipelines, React
Scraping Developer
2024 - 2024
Altaf Ali Ahmed
- Developed a solution to collect VISA appointment data from usvisascheduling.com.
- Optimized AWS infrastructure costs, achieving a 40% reduction from the previous billing.
- Used multiple approaches to enable the bot to bypass the Cloudflare firewall website.
Technologies: TypeScript, Web Scraping, JavaScript, Python, Scraping, Data Scraping, Website Data Scraping, TLS Fingerprinting, Proxies, Redis, Docker, Amazon EC2, Amazon CloudWatch, Puppeteer, Data Integration, Playwright, Back-end, AWS Lambda, Telegram Bots, Telegram Bot API, Automation, Scheduling, Cron, Redis Queue
Staff Software Engineer
2023 - 2024
Vivpro.ai
- Worked to develop an OpenAI API-based chatbot for document content analysis on the platform in natural language.
- Developed Python scripts from scratch to scrape data from the FDA and EMA websites and ingest it into Elasticsearch indexes.
- Enhanced the existing platform to support the new data sources and develop features, such as timestamp-based activity logs and minor bug fixes.
- Developed a disaster recovery script using Terraform for database and service deployment.
Technologies: Python 3, PostgreSQL, Redis, Postman, REST APIs, React, Material UI, Amazon Web Services (AWS), Elasticsearch, Amazon Kendra, OpenAI GPT-3 API, Apache Airflow, Slackbot, Web Scraping, PDF Scraping, Data Scraping, Web Development, SaaS, JSON, Single Sign-on (SSO), Python, Flask, Beautiful Soup, Django, Databases, API Development, JSON/XML Schemas, SQL, Scraping, Puppeteer, Third-party APIs, Microservices Architecture, RESTful Microservices, AI Chatbots, OpenAI API, Data Integration, Object-oriented Programming (OOP), Artificial Intelligence (AI), Natural Language Processing (NLP), Containerization, Full-stack Development, Back-end, Chatbots, Technical Leadership, Apps, Pandas, Terraform, GitHub Actions, Pipelines, Generative Artificial Intelligence (GenAI), OpenAI, Retrieval-augmented Generation (RAG), Redux, CI/CD Pipelines
Senior Software Engineer
2021 - 2023
Shipsy
- Developed report generation scripts for 10+ million records using MongoDB and PostgreSQL.
- Worked on ETL pipelines, data syncing scripts, and webhook management service.
- Developed modules for large-scale logistics operations with around 1 million requests per minute.
- Built an internal tool to empower the customer support team to resolve recurring client requests.
Technologies: JavaScript, Node.js, Express.js, Loopback, NestJS, MongoDB, Postman, PostgreSQL, Python, Amazon Web Services (AWS), AWS Batch, Buddy, CI/CD Pipelines, React, SendGrid, Sentry, TypeScript, APIs, Microservices, Agile, Git, GitHub, AWS Lambda, Web Development, SaaS, Architecture, Deployment, JSON, Amazon EC2, Scheduling, REST APIs, Databases, API Development, Redis Queue, SQL, Third-party APIs, Microservices Architecture, RESTful Microservices, Docker, Data Integration, Amazon CloudFront, Data Pipelines, ETL, Containerization, Angular, Logistics, Inventory Management, Supply Chain, Full-stack Development, Back-end, Apps, Pipelines, Redux
Co-founder | Software Engineer
2019 - 2022
Electrifuel Private Limited
- Built a system to handle, process, and store data from IoT devices for more than 100,000 requests per minute.
- Designed architecture and developed battery swapping platform with two-way communication with deployed hardware.
- Created a web-based inventory management and billing application for users with little or no relevant knowledge.
- Developed a library for the interface of the GPRS module SIM868 with an ARM chip.
- Designed PCB for the GPRS module integration with the ARM chip.
Technologies: Node.js, Express.js, MongoDB, Embedded C, MySQL, jQuery, Amazon Web Services (AWS), Amazon S3 (AWS S3), Amazon EC2, TypeScript, JavaScript, HTML5, CSS, Web Development, SaaS, Architecture, Microservices, Docker, PHP, Deployment, Python, Flask, Go, PostgreSQL, Startups, Postman, Full-stack, Back-end, Front-end, Antd, Redux, React, Software Architecture, System Design, MQTT, HTTP, REST, GraphQL, REST APIs, Databases, API Development, JSON/XML Schemas, SQL, Third-party APIs, Microservices Architecture, RESTful Microservices, Google Cloud Platform (GCP), Data Integration, Amazon CloudFront, WordPress, Containerization, Inventory Management, Full-stack Development, Technical Leadership, Apps, Pipelines
Software Engineer
2021 - 2021
Manhattan Digital
- Built back-end APIs for User auth, accepting the input photo, video from user to upload on Azure and start processing.
- Implemented Azure Functions to process the input with computer vision scripts to generate the desired output.
- Shared the output with the user over email, including the polling API integrated with the front-end app.
Technologies: JavaScript, Node.js, MongoDB, Express.js, Azure Functions, Azure, Vue, Vuex, SendGrid, Azure App Service, Redis, Sentry, Agile, Postman, Serverless, APIs, Web Development, SaaS, Deployment, Docker, JSON, Architecture, Software Architecture, REST APIs, Databases, API Development, Third-party APIs, Microservices Architecture, RESTful Microservices, Data Integration, Containerization, Full-stack Development, Back-end, Apps, Pipelines
Full-stack JavaScript Developer
2020 - 2021
Story Digital
- Revamped the administration dashboard with extensive validations to handle dynamic data for a real-time fan decision application.
- Developed a digital transformation platform with a hands-on learning experience using Amazon WorkSpaces.
- Contributed to designing the architecture for media consumption and an OTT platform to serve more than a million viewers.
- Built an administration dashboard for a sports education application.
Technologies: JavaScript, Node.js, Express.js, NestJS, React, MongoDB, Material UI, Amazon Elastic Block Store (EBS), Amazon S3 (AWS S3), Cloudinary, CSS, Docker, Firebase, Amazon Web Services (AWS), Full-stack, Agile, TypeScript, APIs, Web Dashboards, Web Development, Microservices, Architecture, Deployment, TypeORM, Firebase Hosting, Gatsby, REST APIs, Databases, API Development, Third-party APIs, Microservices Architecture, RESTful Microservices, Google Cloud Platform (GCP), Amazon CloudFront, Containerization, Full-stack Development, Back-end, Apps, Pipelines, CI/CD Pipelines
Experience
Battery Swapping Platform
I designed the architecture for the entire application, including the back end and front end. I also developed and led a team of two developers to develop the platform. I used the MQTT communication protocol and implemented the swapping process with more than ten communication steps between hardware, back end, and front end within 7–9 seconds.
Pharmaceutical Drug R&D Platform
Helped integrate two new data sources in the platform from scratch and added changes in the front and back end of the platform to support the additional sources, FDA and HMA. Enabled text search, document search, and OpenAI-based generative AI response.
Microsoft Event Video Booth
Created the back end of the video booth application for Microsoft Build and Microsoft Inspire events. I built an API for the front-end app that enabled user handshakes and ingested user-generated assets from the platform. Also, I implemented Azure Functions to process the input with computer vision scripts to generate the output. I shared it with the user over email with the polling API integrated with the front-end app.
Drug Data Scraping
https://vivpro.aiScraped data from HPRA (https://hpra.ie) and HMA (https://hma.eu) data sources, downloaded all the documents, extracted data from the documents, and made the data searchable using Elasticsearch, PostgreSQL and AWS Kendra to enable document search.
Dating App Back End
I designed the architecture for the back end of a dating app. I developed social onboarding APIs with Social Auth Integration. I also designed and developed the profile recommendation engine based on user preference, profile score, and previous swipes.
Omni | Center of Excellence
Built a digital enablement platform that offered a hands-on experience to the users. While working on the project, I designed and developed database schemas following the business requirements, built APIs with extensive validations for the platform, and set up and integrated Amazon WorkSpaces with the platform. I added the Stripe subscription payment integration and deployed the platform's front end and back end in multiple environments, including development, demo, and production.
Scheduler Scripts
https://shipsy.ioDocker-wrapped Python scripts to carry out different operations needed for the logistics platform operation, like ETL data pipelines, FTP server syncing, re-booking failed consignments, scheduling consignments for pickup, etc.
Cricuru
Devised a mobile and web-based learning platform for sports enthusiasts and developed it using the MERN stack. For the administration dashboard's front end, I used React, MobX, and Material UI. I contributed to the core back end of the application, which was built with API endpoints using Node.js with NestJS and MongoDB. I also integrated Stripe's payment gateway into the platform and helped build the video processing stack based on the AWS Media stack. After the video's upload, it was converted to the required formats, the captioning was added, and it was published on the platform.
The Selector App
A real-time decision-making application to help the fans decide the next move of a cricket match, such as who will bowl the next over, which player will go as the next batsman, etc. The application shifts the control to the fans and is like a fantasy come true.
Responsibilities:
1. Optimized the building of React components using Redux and Material-UI.
2. Improved the app performance using Webpack bundling and code splitting to reduce the initial load time.
3. Reduced the response time of the APIs by improving the flow.
4. Implemented mobile app notifications from the dashboard using Firebase and Redis.
5. Added questions for end-users in real time using the Redis Pub/Sub model.
6. Developed a static landing website for the platform.
Responsibilities:
1. Optimized the building of React components using Redux and Material-UI.
2. Improved the app performance using Webpack bundling and code splitting to reduce the initial load time.
3. Reduced the response time of the APIs by improving the flow.
4. Implemented mobile app notifications from the dashboard using Firebase and Redis.
5. Added questions for end-users in real time using the Redis Pub/Sub model.
6. Developed a static landing website for the platform.
Inventory Management Platform
Designed architecture and developed a simple-to-use inventory management platform using PHP, jQuery, MySQL, Apache Server, etc., for small and medium-size businesses to help them track and manage their inventory.
Inclusive STEM
A platform designed for specially abled people to help them adjust to schools and universities across the globe.
Responsibilities:
1. Developed the student-facing front end (FE) using React and Redux, and the institution-facing one using Vue.js and Vuex, all while keeping accessibility in mind.
2. Developed the back-end API endpoint based on Node.js using the Express framework and MongoDB.
3. Added third-party APIs for services like video captioning, Math OCR, and volunteer search.
4. Actively developed the platform.
5. Integrated third-party accommodations like a volunteer search, video captioning, and OCR searches to the Python/Flask-based server.
Responsibilities:
1. Developed the student-facing front end (FE) using React and Redux, and the institution-facing one using Vue.js and Vuex, all while keeping accessibility in mind.
2. Developed the back-end API endpoint based on Node.js using the Express framework and MongoDB.
3. Added third-party APIs for services like video captioning, Math OCR, and volunteer search.
4. Actively developed the platform.
5. Integrated third-party accommodations like a volunteer search, video captioning, and OCR searches to the Python/Flask-based server.
Support Tool Development
Developed a MERN app that performs some specific actions with access control within the organization to empower the support team to resolve the recurring issues on their own and reduce the dependency on the engineering team.
Media Recorder
Developed my own media recorder.
During the pandemic, when we couldn't get through the daily meetings, I drew inspiration from the Google Meet platform and worked towards developing my own audio, video, and screen recorder. Currently, it supports recording the media on the local storage only, but I plan to use the calling feature similarly in the future.
During the pandemic, when we couldn't get through the daily meetings, I drew inspiration from the Google Meet platform and worked towards developing my own audio, video, and screen recorder. Currently, it supports recording the media on the local storage only, but I plan to use the calling feature similarly in the future.
Mobilebiz Project
The platform was targeted to list, manage, and sell refurbished products on the mobile app. I was responsible for developing the entire admin dashboard and platform back end. We used Node.js, Express.js, and MongoDB in the back end and React, Ant Design, and Context API in the front end.
Assured Buyback Cover (Product)
https://cars24buyback.comA platform for buying/redeeming. Assured buyback cover for your old or newly purchased vehicle. We offer an assured price for vehicle buyback based on the vehicle's city and variant.
The software was primarily used with B2B partners. I designed custom authentication and authorization schemes to handle multiple use cases at the partner level.
The software was primarily used with B2B partners. I designed custom authentication and authorization schemes to handle multiple use cases at the partner level.
Epic Link Lenders
A Node.js-based serverless app to scrape data by logging into a user's loan account. I generalized the entire login and 2FA flow for more than 300 vendors in the platform. I also enhanced the structure of the scraped data to support multiple loan applications.
Selenium File Upload Automation
https://gitlab.com/dhruv479/selenium-scrappingI developed a Python Script to automate the bulk file upload process for an eCommerce website. It was built on Selenium using drivers, and the web page elements were accessed and actioned upon using the XPath functionality of Selenium.
Retail Fashion Insights Tool
Scrap website data from multiple competing vendors' product listing and product description pages, and collect in-stock and variant availability to predict sales and stock movement using periodic data collection.
LinkedIn Automation
The project revolves around automating the entire LinkedIn journey for founders to reduce the time for GTM by getting early customer feedback, meeting scheduling, etc.
The product inputs the SalesNav search URL and automatically fetches all contacts. It connects the ICP and initiates a conversation on its own, producing the desired output.
The product inputs the SalesNav search URL and automatically fetches all contacts. It connects the ICP and initiates a conversation on its own, producing the desired output.
Education
2015 - 2019
Bachelor's Degree in Computer Science
Maharshi Dayanand University - Haryana, India
Skills
Libraries/APIs
Node.js, React, jQuery, Vuex, Antd, REST APIs, JSON API, SQLAlchemy, API Development, Redis Queue, Context API, Puppeteer, Beautiful Soup 4, LinkedIn API, Vue, MobX, Stripe, HTML5 APIs, Beautiful Soup, OpenAI API, Playwright, NumPy, Telegram Bot API, Pandas
Tools
Amazon Elastic Block Store (EBS), Mongoose, Postman, Sentry, Git, GitHub, GitLab, Firebase Cloud Messaging (FCM), Amazon Kendra, Docker Compose, wkhtmltopdf, TLS Fingerprinting, Prisma, AWS Step Functions, Amazon Simple Notification Service (SNS), Amazon CloudWatch, SendGrid, Azure App Service, AWS Batch, Logging, MQTT, Firebase Authentication, Apache Airflow, AWS CloudFormation, Apache Tomcat, TeamCity, Flyway, Amazon Simple Queue Service (SQS), Amazon CloudFront, Nx, IntelliJ IDEA, RabbitMQ, Cron, Terraform, Claude Code
Languages
Python, JavaScript, TypeScript, HTML, HTML5, Python 3, XML, GraphQL, SQL, Java, Embedded C, CSS, PHP, Snowflake, Go, Ruby
Frameworks
Flask, Express.js, Jest, NestJS, Material UI, Redux, Loopback, JSON Web Tokens (JWT), Next.js, Spring Boot, Django, Hibernate, Tailwind CSS, Selenium, Angular, Spring Microservice, Ruby on Rails 7
Paradigms
Scrum, Agile, Microservices, REST, Microservices Architecture, Object-oriented Programming (OOP), Automation, Test-driven Development (TDD), ETL, Responsive Layout
Platforms
MacOS, Ubuntu, Amazon Web Services (AWS), Docker, Heroku, Amazon EC2, Azure Functions, Visual Studio Code (VS Code), AWS Lambda, Google Cloud Platform (GCP), Storyblok, Langfuse, Azure, Firebase, Buddy, Twilio, WordPress, Kubernetes
Storage
MySQL, MongoDB, Redis, PostgreSQL, Amazon S3 (AWS S3), Elasticsearch, JSON, Databases, JSON/XML Schemas, Data Integration, Amazon DynamoDB, Spring Data JPA, Data Pipelines, Datadog
Other
IoT Protocols, Cloudinary, Full-stack, API Integration, Serverless, User Permissions, APIs, Web Dashboards, TypeORM, Web Scraping, Data Scraping, Web Development, SaaS, Architecture, Deployment, PDF, Integration, User Authentication, Startups, Back-end, Front-end, Software Architecture, System Design, HTTP, Ajax, Firebase Hosting, Scheduling, OpenAI, Middleware, Authorization, Pub/Sub, Server-side PDF Generation, Server-side Rendering (SSR), Analytics, Scraping, Website Data Scraping, Proxies, Amazon RDS, Third-party APIs, RESTful Microservices, Scripting, Containerization, Full-stack Development, Google Pub/Sub, Apps, Pipelines, Supabase, Apify SDK, CSV, Generative Artificial Intelligence (GenAI), Browserbase, Gatsby, CI/CD Pipelines, Recommendation Systems, OpenAI GPT-3 API, Slackbot, PDF Scraping, Single Sign-on (SSO), Large Language Models (LLMs), AI Chatbots, Artificial Intelligence (AI), Natural Language Processing (NLP), eCommerce, Logistics, Inventory Management, Supply Chain, Chatbots, Technical Leadership, GitHub Actions, Retrieval-augmented Generation (RAG), Razorpay, Telegram Bots, Cursor AI, GitHub Copilot Chat
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