Dhaval is available for hire
Hire DhavalDhaval Chheda
Verified Expert in Engineering
React and Full-stack Developer
Location
Mumbai, Maharashtra, India
Toptal Member Since
May 17, 2022
Dhaval has specialized in React front-end development for innovative edtech and staffing companies for the past six years. He has 10+ years of experience architecting and coding web applications that serve millions of registered users. Dhaval is a go-getter with a strong work ethic, and people enjoy working with him. He has a bachelor's degree in computer engineering.
Portfolio
Tactus Therapy Solutions Ltd.
Vue, JavaScript, HTML, Node.js, SCSS, Docker, CI/CD Pipelines, Azure, MySQL...
Omneky
Analytics, Amazon SageMaker, Machine Learning, Deep Learning, Python 3...
Trade Arcade, Inc
Laravel, TypeScript, PHP, Vue, Node.js, Amazon Web Services (AWS), Redis...
Experience
Availability
Part-time
Preferred Environment
Visual Studio Code (VS Code), Slack, GitHub, MacOS, iTerm2, Postman, Architecture, Event-driven Architecture
The most amazing...
...website I've built has scaled to serve five million users. I built this from scratch for Intern Theory.
Work Experience
Full-stack Developer
2023 - 2023
Tactus Therapy Solutions Ltd.
- Developed front end and back end of the goals feature that allows patients to structure their goal using smart goal assistant.
- Made significant improvements to the way terms and conditions were presented to users.
- Collaborated with the CTO in scoping the work, discussing how the UI/UX flow could be improved, and finalizing the Jira tickets.
Technologies: Vue, JavaScript, HTML, Node.js, SCSS, Docker, CI/CD Pipelines, Azure, MySQL, FeathersJS, Cypress, Bitbucket, Socket.IO, Bootstrap, HIPAA Compliance, Documentation
Tech Lead
2022 - 2023
Omneky
- Managed a team of 10 people, providing architectural directions on building and scaling the dashboard for users to analyze, generate, and distribute their ads.
- Created titles and bodies for advertisements using a state-of-the-art GPT-3 model, which consisted of the best keywords evaluated using deep learning.
- Implemented an interpretable ML model based on the random forest regressor to analyze crucial text and media features. The model recommended the impact of these features on CTR, CPC, and CPR, increasing reach.
- Used the Google Slides API to create automated reports that included top media advertisements and creative insights.
- Implemented an image similarity model to match identical images and videos with an accuracy of up to 95%. Dissected the trained weights of the VGG image object classifier and extracted feature vectors from the image dataset to evaluate similar images.
- Extracted the frames from the first second of each video and then compared them with frames from the other parts.
- Implemented a machine learning model based on historical data of advertisements using the Shapley value. This model helped clients reduce their return on ad spend (ROAS) by 18%.
- Created end-to-end computer vision solutions to extract features from ads.
- Created end-to-end data pipelines to gather data from the Google Ads, TikTok Ads, and Reddit Ads API and applied feature engineering techniques to extract meaningful insights.
- Built APIs and database architecture for the entire application and initiated the conversion to a microservices architecture.
Technologies: Analytics, Amazon SageMaker, Machine Learning, Deep Learning, Python 3, Computer Vision, Natural Language Processing (NLP), Microservices, PHP, React, MySQL, Terraform, Git, GitHub, Architecture, AWS Lambda, Amazon S3 (AWS S3), Amazon Elastic Container Service (Amazon ECS), Amazon EC2, Amazon Aurora, Team Management, Global Team Management, Design, PhpStorm, Navicat, Business Architecture, Enterprise Architecture, Artificial Intelligence (AI), Swagger, Documentation, Cloud Architecture
Senior Full-stack Developer for Finance Content/Broadcast Platform
2022 - 2023
Trade Arcade, Inc
- Helped build the backend of the platform and helped scale the platform to be able to handle a million concurrent live stream viewers.
- Built the backend for features like chat, subscriptions, and live streams.
- Refactored the code to be more performant, maintainable, and scalable.
Technologies: Laravel, TypeScript, PHP, Vue, Node.js, Amazon Web Services (AWS), Redis, PostgreSQL, Data Pipelines, Fintech Consultant, Fintech, Payment Gateways, ACH, Amazon DynamoDB, Amazon Simple Email Service (SES), Team Leadership, MERN Stack, Database Design, Large Data Sets, Snowflake, Firebase, Streaming, JSON Web Tokens (JWT), PHP 7, OAuth 2, Serverless Framework, Pandas, Terraform, QA Automation, PhpStorm, Enterprise Architecture, Swagger, Documentation, Cloud Architecture
Senior Full-stack Developer
2022 - 2022
DiamondDao
- Built a content platform where users can add content like Wikipedia.
- Crafted a custom Rich Text editor and enabled everything that was available on the platform.
- Established relationships between content using Neo4J so that all content can be connected using a graph database.
Technologies: Node.js, React, Neo4j, NestJS, Full-stack Development, MERN Stack, Blockchain, Styled-components, JSON Web Tokens (JWT), Serverless Framework
Front-end JavaScript Developer
2022 - 2022
Shippo - Main
- Helped initiate the integration of our label purchase widget with a leading eCommerce platform, and the aim was to build a widget that will run on an eCommerce company's site.
- Oversaw clearing the technical debt, ensuring that the MonoRepo is scalable and maintainable; converted legacy dependencies to modern ones and also created central configs for new packages and existing ones.
- Aided the team with the PRs and provided technical guidance when someone was stuck.
Technologies: JavaScript, HTML, CSS, React, Amazon Web Services (AWS), Web Architecture, Front-end Build Tools, Object-oriented Design (OOD), Object-oriented JavaScript (OOJS), Asynchronous Servers, Asynchronous Programming, OpenAPI, Unit Testing, JSON API, JSON REST APIs, REST APIs, Jest, Solution Architecture, Scrum, Jira, Agile Sprints, Design Tools, Responsive UI, Design Patterns, Software Design, JavaScript Libraries, Payment Gateways, MERN Stack, Storybook, JSON Web Tokens (JWT), Documentation
VP, Engineering
2021 - 2022
Masai School
- Architected and built products for internal and external users and ensured that all products could be scaled to 100x.
- Developed learn.masaischool.com, a learning management system, including the React front end and back-end APIs in Laravel.
- Built onwards.masaischool.com, which is now onboard.masaischool.com: architected the solution and developed some back-end Python APIs, the migration logic, and several React components.
- Created the masaischool.com website, the entry point to the ecosystem for non-registered users.
- Managed the CI/CD pipelines and led, trained, and mentored a team of around 18 engineers.
Technologies: JavaScript, React, Python 3, PHP, MySQL, Docker, Redis, Node.js, JSON, APIs, SQL, Front-end Development, Front-end, HTML, CSS, Python, Python API, Software Architecture, Django, PostgreSQL, Amazon RDS, Amazon Web Services (AWS), Apollo GraphQL, GraphQL, Automation, CI/CD Pipelines, Tailwind CSS, Full-stack, Containers, Load Balancers, Back-end Development, OAuth, AWS ELB, Automated Testing, REST APIs, Design Systems, NGINX, Redis Cache, User Interface (UI), HTML5, Live Chat, Gang of Four (GOF) Design Patterns, Software, Architecture, Bash Script, Figma, Git, Back-end, Integration, Amazon S3 (AWS S3), AWS CloudFormation, Amazon CloudFront CDN, HTTP, Web, Performance, Debugging, Continuous Integration (CI), Continuous Delivery (CD), AWS DevOps, Scalability, Amazon EC2, Cypress, API Integration, Microservices Architecture, Microservices, Cloud, Cloud Computing, REST, Content Delivery Networks (CDN), WebSockets, Learning Management Systems (LMS), E-learning, Object-oriented Programming (OOP), Data Structures, Linux, Application State Management, Responsive Web Apps, Chakra UI, Agile, Leadership, Databases, DevOps, Estimations, User Experience (UX), Single-page Applications (SPA), Technical Leadership, Web Architecture, Front-end Build Tools, Object-oriented Design (OOD), Object-oriented JavaScript (OOJS), Asynchronous Servers, Asynchronous Programming, Technical Project Management, Kanban, Single Sign-on (SSO), PHPUnit, Webhooks, OpenAPI, Unit Testing, NoSQL, JSON API, JSON REST APIs, Jest, Data Engineering, Solution Architecture, Scrum, Jira, Express.js, Agile Sprints, Design Tools, Responsive UI, Design Patterns, Software Design, JavaScript Libraries, Reporting, FastAPI, Data Pipelines, Metabase, Payment Gateways, Full-stack Development, Amazon Simple Email Service (SES), Team Leadership, Database Design, Storybook, Ant Design, Styled-components, React Query, Firebase, JSON Web Tokens (JWT), PHP 7, OAuth 2, Amazon Elastic Container Service (Amazon ECS), QA Automation, PhpStorm, Business Architecture, Enterprise Architecture, Swagger, Documentation, Cloud Architecture
Tech Partner
2020 - 2020
Coffic Co-working
- Oversaw the building of the project's complete tech as a co-founder with the goal to enable co-working from pubs, lounges, restaurants, etc.
- Built all the APIs using Laravel, GraphQL, and MySQL and a mobile application in React Native using Expo.
- Contributed to project planning and designs and UI/UX workflows and ensured that a strong MVP was built.
Technologies: JavaScript, React Native, Laravel, MySQL, Amazon Web Services (AWS), Expo, Tailwind CSS, Full-stack, Back-end Development, OAuth, AWS ELB, Redux, REST APIs, Design Systems, NGINX, User Interface (UI), HTML5, PHP, Software, Architecture, Bash Script, Figma, Git, Back-end, Amazon S3 (AWS S3), HTTP, Web, Debugging, WebView, Amazon EC2, API Integration, Cloud, Cloud Computing, MUI (Material UI), AWS Lambda, REST, Serverless Architecture, Object-oriented Programming (OOP), Linux, Application State Management, Agile, Databases, DevOps, Estimations, SCSS, User Experience (UX), Single-page Applications (SPA), Web Architecture, Front-end Build Tools, Object-oriented Design (OOD), Asynchronous Servers, Asynchronous Programming, OpenAPI, JSON API, JSON REST APIs, Solution Architecture, Mobile Back-end, Design Tools, Responsive UI, Design Patterns, Software Design, JavaScript Libraries, Full-stack Development, Amazon Simple Email Service (SES), Team Leadership, Database Design, JSON Web Tokens (JWT), PHP 7, Swagger, Cloud Architecture
Architect
2019 - 2020
Online Freelance Agency (Self-employed)
- Architected the company's core platform and developed most of its UI with React and some APIs in Python FastAPI.
- Oversaw CI/CD pipelines and AWS deployments and managed two freelancers who assisted in coding different parts of the application.
- Enabled clients to define the requirements for open positions, post jobs, find matching candidates, schedule meetings, and complete the process from posting to hiring.
Technologies: JavaScript, React, Python 3, MySQL, TypeScript, Elasticsearch, Docker, JSON, APIs, SQL, Front-end Development, Front-end, HTML, CSS, Python, Python API, Software Architecture, Distributed Systems, PostgreSQL, Amazon RDS, Amazon Web Services (AWS), Apollo GraphQL, GraphQL, Automation, CI/CD Pipelines, Full-stack, Containers, Load Balancers, Back-end Development, OAuth, AWS ELB, Redux, Automated Testing, REST APIs, Design Systems, NGINX, Redis Cache, User Interface (UI), HTML5, Live Chat, Gang of Four (GOF) Design Patterns, Software, Architecture, Bash Script, Figma, Next.js, Back-end, Integration, Amazon S3 (AWS S3), Amazon CloudFront CDN, HTTP, Web, Performance, Debugging, Continuous Integration (CI), Continuous Delivery (CD), AWS DevOps, Amazon EC2, API Integration, Cloud, Cloud Computing, MUI (Material UI), REST, WebSockets, Sequelize, Object-oriented Programming (OOP), Data Structures, Linux, Application State Management, Responsive Web Apps, Apollo, Agile, Databases, DevOps, Estimations, Marketplaces, SCSS, User Experience (UX), Single-page Applications (SPA), Technical Leadership, Web Architecture, Front-end Build Tools, Object-oriented Design (OOD), Object-oriented JavaScript (OOJS), Asynchronous Servers, Asynchronous Programming, Web Scraping, Technical Project Management, Kanban, OpenAPI, Unit Testing, JSON API, JSON REST APIs, Solution Architecture, Agile Sprints, Design Tools, Responsive UI, SaaS, Design Patterns, Software Design, JavaScript Libraries, Reporting, Data Pipelines, Platform as a Service (PaaS), Payment Gateways, Full-stack Development, Amazon Simple Email Service (SES), Team Leadership, Database Design, JSON Web Tokens (JWT), OAuth 2, Amazon Elastic Container Service (Amazon ECS), Pandas, Swagger, Documentation, Cloud Architecture
Senior Software Engineer
2019 - 2019
Eros Now
- Built much of the core website for erosnow.com in Vue.js and some APIs in Python Django.
- Created the reel component on the homepage and the subscription component.
- Performed code reviews and mentored junior developers.
Technologies: JavaScript, Vue, Docker, JSON, APIs, SQL, Front-end Development, Front-end, HTML, CSS, Webpack, Distributed Systems, Django, Amazon RDS, Amazon Web Services (AWS), Automation, CI/CD Pipelines, ETL, Azure, Full-stack, Containers, Load Balancers, Back-end Development, OAuth, AWS Fargate, AWS ELB, Automated Testing, REST APIs, Design Systems, NGINX, Redis Cache, Celery, User Interface (UI), HTML5, Video Streaming, Gang of Four (GOF) Design Patterns, Software, Figma, Git, Back-end, Integration, Amazon S3 (AWS S3), Lambda Functions, Serverless, Amazon CloudFront CDN, HTTP, Web, Performance, Debugging, WebView, Continuous Integration (CI), Continuous Delivery (CD), AWS DevOps, Scalability, Amazon EC2, Cypress, API Integration, Microservices Architecture, Microservices, REST, Apache Kafka, Content Delivery Networks (CDN), WebSockets, Object-oriented Programming (OOP), Data Structures, Linux, Application State Management, Responsive Web Apps, Agile, Databases, DevOps, Front-end Build Tools, Object-oriented Design (OOD), Object-oriented JavaScript (OOJS), Asynchronous Servers, Asynchronous Programming, Data Warehousing, Algorithms, Vue SSR, Vue 2, Kanban, Webhooks, Unit Testing, NoSQL, JSON API, JSON REST APIs, Jest, Redux, Redux RTK, Vue 3, Solution Architecture, Scrum, Jira, Agile Sprints, Mobile Back-end, Design Tools, Responsive UI, Design Patterns, Software Design, JavaScript Libraries, Reporting, Platform as a Service (PaaS), Lambda Architecture, Payment Gateways, Amazon Simple Email Service (SES), Database Design, Large Data Sets, Storybook, Streaming, JSON Web Tokens (JWT), OAuth 2, Amazon Elastic Container Service (Amazon ECS), QA Automation, PhpStorm, Documentation, Cloud Architecture
Head of Technology
2018 - 2018
Intern Theory
- Led the development of a career platform, from scratch, that helped millions of students apply to 10,000+ companies to get their dream jobs or internships and take courses that were built in-house.
- Architected the entire product and developed numerous front-end components in React and several APIs built with Laravel.
- Oversaw deployments and CI/CD pipelines while managing, training, and mentoring a team of five in building this product to scale to millions of users.
Technologies: JavaScript, React, Laravel, Redis, MySQL, JSON, APIs, SQL, Front-end Development, Front-end, HTML, CSS, Software Architecture, React Apollo, Amazon RDS, Amazon Web Services (AWS), Full-stack, Load Balancers, Back-end Development, OAuth, AWS ELB, Redux, Automated Testing, REST APIs, Design Systems, NGINX, Redis Cache, Redis Queue, User Interface (UI), HTML5, Live Chat, PHP, Gang of Four (GOF) Design Patterns, Software, Architecture, Bash Script, Git, Back-end, Integration, Amazon S3 (AWS S3), Amazon CloudFront CDN, HTTP, Web, Performance, Debugging, Continuous Integration (CI), Continuous Delivery (CD), AWS DevOps, Scalability, AWS Elastic Beanstalk, Amazon EC2, API Integration, Cloud, Cloud Computing, MUI (Material UI), REST, Content Delivery Networks (CDN), CTO, E-learning, Object-oriented Programming (OOP), Linux, Application State Management, Responsive Web Apps, Bootstrap, Apollo, Agile, Leadership, Databases, DevOps, Estimations, User Experience (UX), Single-page Applications (SPA), Technical Leadership, Web Architecture, Front-end Build Tools, Object-oriented Design (OOD), Asynchronous Servers, Asynchronous Programming, Technical Project Management, Kanban, PHPUnit, Unit Testing, NoSQL, JSON API, JSON REST APIs, Solution Architecture, Scrum, Agile Sprints, Mobile Back-end, Design Tools, Responsive UI, Design Patterns, Software Design, JavaScript Libraries, Reporting, Payment Gateways, Full-stack Development, Amazon Simple Email Service (SES), Team Leadership, Database Design, Large Data Sets, Styled-components, React Query, Firebase, JSON Web Tokens (JWT), PHP 7, OAuth 2, Amazon Elastic Container Service (Amazon ECS), QA Automation, Design, PhpStorm, Enterprise Architecture, Cloud Architecture
Head of Technology
2007 - 2016
Mindlip Solutions Pvt. Ltd.
- Helped scale the company from 2 people to over 50 and created processes for hiring, project management, and mentoring programs. We successfully handled multiple clients at a time.
- Built architectures for most of the projects and also spent approximately 20% of my time actively coding every day.
- Oversaw project delivery and day-to-day resource management.
Technologies: JavaScript, PHP, Node.js, MySQL, CodeIgniter, Laravel, Redis, AWS ELB, Amazon EC2, Amazon S3 (AWS S3), Oracle RDS, Ruby, Ruby on Rails 5, Cloud Architecture
Experience
Masai School Website
https://masaischool.com/A React-based application where students can apply to Masai courses. The website also serves as the company's brand representation. I led and developed much of the site, which included a single sign-on system to work with all Masai products.
Online Freelance Agency
Architected and developed most of the system that allows consultants to post projects and freelancers and firms to apply for them. Admin users can find matching candidates, QA and shortlist them, and manage the entire project flow, from the market scan to closing.
Eros Now
https://erosnow.com/Served on the team that developed the core for the company's OTT platform and participated in creating other services, such as notifications and payments. I built the core website that served OTT content to browser users.
First Blood
http://firstblood.ioFirst Blood is into esports and organizes tournaments and rewards players for sharing their skills and upskilling, etc. I developed their Mana reward system where users can link their game accounts with us, and we would reward them for achievements they accomplish in the game. This application was built using Angular and NestJS.
Aquaplot
https://www.aquaplot.com/Aquaplot is a sea navigation application for ports, providing accurate estimates of ship arrivals and precise navigation to ships. Aquaplot was built in React and Rails/Node.js, and I created the account and licensing features.
Intern Theory Career Solutions
https://www.interntheory.com/A web application that assists students in gaining internships in top companies in India. In addition to leading the technology team, I architected and developed much of the web application that serves several million registered users and more than 10,000 companies.
Plivo
https://github.com/plivo/plivo-phpPlivo is a communication service like Twilio, and it allows users to make and receive phone calls and messages through APIs. I was responsible for writing some of their PHP SDK. Github link to the project: https://github.com/plivo/plivo-php.
Skills
Languages
JavaScript, Python 3, PHP, TypeScript, SQL, HTML, CSS, Python, Ruby, HTML5, Bash Script, SCSS, Object-oriented JavaScript (OOJS), PHP 7, GraphQL, Snowflake
Frameworks
Laravel, Ruby on Rails (RoR), Django, React Native, Tailwind CSS, Angular, NestJS, Redux, Express.js, Next.js, JSON Web Tokens (JWT), OAuth 2, Swagger, Cypress, MUI (Material UI), Bootstrap, AngularJS, Vue SSR, PHPUnit, Jest, Ant Design, Serverless Framework, Ruby on Rails 5, FeathersJS, CodeIgniter
Libraries/APIs
React, Vue, Node.js, Python API, REST APIs, OpenAPI, JSON API, ActiveRecord, Sidekiq, Stripe, Vue 2, Pandas, Redis Queue, Socket.IO
Tools
GitHub, Webpack, AWS ELB, NGINX, Git, Sequelize, Front-end Build Tools, Jira, Amazon Simple Email Service (SES), PhpStorm, Slack, Postman, React Apollo, Figma, Amazon CloudFront CDN, WebView, Amazon Elastic Container Service (Amazon ECS), Navicat, Expo, AWS Fargate, Celery, AWS CloudFormation, Terraform, Bitbucket, Amazon SageMaker
Paradigms
Automated Testing, Continuous Integration (CI), Continuous Delivery (CD), Microservices Architecture, Microservices, REST, Object-oriented Programming (OOP), Agile, DevOps, Web Architecture, Object-oriented Design (OOD), Asynchronous Programming, Kanban, Unit Testing, Scrum, Design Patterns, Database Design, Automation, ETL, Gang of Four (GOF) Design Patterns, Serverless Architecture, Event-driven Architecture, Lambda Architecture, HIPAA Compliance
Platforms
Amazon Web Services (AWS), Web, Amazon EC2, Linux, MacOS, Docker, AWS Elastic Beanstalk, AWS Lambda, Apache Kafka, Firebase, Visual Studio Code (VS Code), Kubernetes, Azure, Blockchain
Storage
MySQL, PostgreSQL, JSON, Amazon S3 (AWS S3), Databases, Data Pipelines, Redis Cache, MongoDB, Neo4j, NoSQL, Amazon DynamoDB, Elasticsearch, Redis, Amazon Aurora, Oracle RDS
Industry Expertise
E-learning
Other
Web Development, APIs, Front-end Development, Front-end, Software Architecture, Distributed Systems, Amazon RDS, CI/CD Pipelines, Full-stack, Containers, Load Balancers, Back-end Development, Design Systems, User Interface (UI), Software, Architecture, Back-end, Integration, HTTP, Performance, Debugging, AWS DevOps, Scalability, API Integration, Cloud, Cloud Computing, CTO, Data Structures, Application State Management, Responsive Web Apps, Leadership, Estimations, User Experience (UX), Single-page Applications (SPA), Technical Leadership, Asynchronous Servers, Technical Project Management, JSON REST APIs, Solution Architecture, Agile Sprints, Mobile Back-end, Design Tools, Responsive UI, SaaS, Software Design, JavaScript Libraries, Reporting, Platform as a Service (PaaS), Payment Gateways, Full-stack Development, Team Leadership, MERN Stack, Storybook, Business Architecture, Enterprise Architecture, Cloud Architecture, iTerm2, Apollo GraphQL, OAuth, Video Streaming, Live Chat, SDKs, Storage, Open Source, Content Delivery Networks (CDN), WebSockets, Learning Management Systems (LMS), Chakra UI, Apollo, Marketplaces, Web Scraping, Data Warehousing, Algorithms, Single Sign-on (SSO), Webhooks, Vue 3, Data Engineering, FastAPI, Fintech Consultant, Fintech, ACH, Large Data Sets, Styled-components, React Query, Streaming, QA Automation, Design, Documentation, Lambda Functions, Serverless, Redux RTK, Metabase, Analytics, Machine Learning, Deep Learning, Computer Vision, Natural Language Processing (NLP), Team Management, Global Team Management, Artificial Intelligence (AI)
Education
2002 - 2007
Bachelor's Degree in Computer Engineering
University of Mumbai - Mumbai, India