Jaswant is available for hire
Hire JaswantJaswant Dhayal
Verified Expert in Engineering
Software Developer
Gurugram, Haryana, India
Toptal member since October 6, 2022
Bio
Jaswant is an IT professional with 12+ years of experience in React Native who has worked on 20+ mobile apps. He has a background in analyzing existing functionalities and applications, understanding the present state, finding gaps in processes, and devising roadmaps for enhancing applications. He has excellent communication and interpersonal skills with abilities to resolve complex problems, a sound understanding of mobile technologies, and an analytical bent of mind.
Portfolio
Rounding Assistant
PostgreSQL, Mobile App Development, Next.js, OpenAI API, HIPAA Compliance...
Apollo 24|7
React, React Native, GraphQL, JavaScript, TypeScript...
Xebia Group
React, React Native, GraphQL, Agile Software Development, CSS, Redux...
Experience
- JavaScript - 10 years
- React Native - 7 years
- TypeScript - 6 years
- React - 6 years
- Agile Software Development - 6 years
- Redux - 6 years
- GraphQL - 5 years
- Redux-Saga - 5 years
Preferred Environment
MacOS, Android, iOS, Xcode, Android Studio, GraphQL, REST, React Native, Mobile Development
The most amazing...
...app I've built from scratch is Yes Genie that provides a 360-degree costumer view for the Yes Bank.
Work Experience
Senior Full-stack Cross-platform Mobile App Developer
2025 - 2025
Rounding Assistant
- Developed a cross-platform medical notes app using Ionic + React, adding HIPAA-aligned on-device encryption, speech-to-text, and AI SOAP generation with Firebase back-end APIs.
- Integrated Azure OpenAI for HIPAA-compliant AI processing, enabling accurate speech-to-text and SOAP note workflows, while improving system reliability and overall data security.
- Built census import flows, multi-note handling, autosave, sorting, filtering, and a demo-ready web deployment, allowing the client to showcase the product using test data.
Technologies: PostgreSQL, Mobile App Development, Next.js, OpenAI API, HIPAA Compliance, React Native, Flutter
Principal Engineer
2021 - 2022
Apollo 24|7
- Updated React Native version from 0.63 to 0.67.1 and updated React Navigation version from 3 to 6 to get better performance.
- Enhanced medication and log-in and sign-up process, and as per CleverTap events, got 10% more users after this change.
- Tracked and fixed bugs using Jira as a reporting tool.
Technologies: React, React Native, GraphQL, JavaScript, TypeScript, Agile Software Development, Redux, Redux-Saga, REST APIs, Git, Firebase, Mobile, Mobile Apps, Mobile UI, Amazon Web Services (AWS), APIs, Node.js, Full-stack, Leadership, Architecture, Software Design, Figma, Responsive Design, Swift, Kotlin, Mobile Security, PHP, Mobile Development, React Redux, Payment APIs, Microservices, Front-end, Videos, Video Streaming, Third-party Integration, Deployment, Integration, Digital Video, HTML, Expo.io, Cross-platform, Firebase Android SDK, Firebase iOS SDK, Design, Responsive Web Design (RWD), Next.js, Geolocation, MySQL, AWS Amplify, Angular, Web Development, Technical Leadership, App Submission, Amazon EC2, MongoDB, Python, Prisma, Tailwind CSS, Realm, REST, NoSQL, Nuxt.js, Vue, Firebase Hosting, GitHub Actions, Cloud Firestore, Apple Pay, Google Calendar, Google Maps, WebSockets, Expo, Flutter, Artificial Intelligence (AI), OpenAI GPT-4 API, Mobile App Development, Push Notifications, OpenAI API, PostgreSQL, Full-stack Development, Tailwind UI, User Interface (UI), Google Maps API, UI Components, Storyblok
Lead Consultant
2019 - 2021
Xebia Group
- Worked with Yes Bank and built Yes Genie mobile app where internal managers can see a 360-degree view of the customer. I also led the team and created end-to-end architecture.
- Enabled a good boost in customer support and sales for Yes Bank after launching this app. Its team of 10,000+ internal managers started using that app and found it very useful.
- Tracked and fixed bugs using Jira as a reporting tool.
Technologies: React, React Native, GraphQL, Agile Software Development, CSS, Redux, Redux-Saga, REST APIs, Git, Jenkins, Firebase, Mobile, Mobile Apps, Bluetooth, Mobile UI, Responsive UI, Amazon Web Services (AWS), APIs, 3D, Three.js, Node.js, Full-stack, Leadership, Architecture, Software Design, Builder.io, Figma, Responsive Design, Swift, Kotlin, Mobile Security, Mobile Development, Flutter, React Redux, Payment APIs, Microservices, Front-end, Videos, Video Streaming, Third-party Integration, Deployment, Integration, Digital Video, HTML, Expo.io, Cross-platform, Firebase Android SDK, Firebase iOS SDK, Design, Responsive Web Design (RWD), AngularJS, Next.js, Geolocation, MySQL, AWS Amplify, Angular, Web Development, Technical Leadership, App Submission, Amazon EC2, MongoDB, Prisma, Tailwind CSS, Realm, React Native for Web, REST, NoSQL, RDBMS, Nuxt.js, Vue, Firebase Hosting, GitHub Actions, Cloud Firestore, Apple Pay, Google Calendar, Google Maps, Auth0, WebSockets, Expo, Mobile App Development, Push Notifications, PostgreSQL, Full-stack Development, Tailwind UI, User Interface (UI), Google Maps API, Storyblok
Tech Analyst
2018 - 2019
Tata Consultancy Services
- Built an internal performance measuring lean tool from scratch while working with Ameriprise Financial.
- Tracked and fixed bugs using Jira as a reporting tool.
- Enabled easy performance tracking with the lean tool I implemented and received positive feedback for this.
Technologies: React, React Native, JavaScript, TypeScript, GraphQL, CSS, HTML5, Redux, Redux-Saga, REST APIs, Git, Responsive UI, APIs, Leadership, Software Design, Responsive Design, PHP, Payment APIs, Front-end, Third-party Integration, Deployment, Integration, HTML, Cross-platform, Firebase Android SDK, Design, Responsive Web Design (RWD), AngularJS, Next.js, Geolocation, Technical Leadership, App Submission, Electron, Realm, Firebase Hosting, GitHub Actions, Cloud Firestore, Google Maps, Auth0, Expo, Mobile App Development, Push Notifications, Full-stack Development, User Interface (UI), Google Maps API
Lead Software Engineer
2016 - 2018
Appster
- Learned and explored React Native, which is cross-platform but not hybrid, so it improved the app performance compared to Ionic. At that time, React Native was new in the market; clients liked how it worked and gave us positive feedback.
- Started leading the projects and attending client calls and technical discussions, working completely using the Agile methodology.
- Helped Appster become a well-known brand in mobile technology.
Technologies: React, React Native, JavaScript, TypeScript, Ionic, CSS, HTML5, Redux, Redux-Saga, GraphQL, REST APIs, Git, Jenkins, Mobile, Mobile Apps, Bluetooth, Cordova Plugins, Mobile UI, Responsive UI, APIs, Architecture, Software Design, Figma, Mobile Development, Deployment, Integration, HTML, Firebase iOS SDK, AngularJS, App Submission, Mobile App Development, Push Notifications, Full-stack Development
Hybrid App Developer
2015 - 2016
Detecvision Technologies Pvt
- Learned Ionic and mostly worked on small mobile apps for Android and iOS.
- Interacted with clients directly on a daily basis, so I learned a lot about client communication.
- Built a mobile application to pay the school fees and published it for Android and iOS.
Technologies: JavaScript, PhoneGap, Cordova, Ionic, CSS, HTML5, REST APIs, Git, Cordova Plugins, Responsive UI, APIs, HTML, AngularJS, Mobile App Development, Push Notifications
Mobile Application Developer
2013 - 2015
Sparx IT
- Learned JavaScript and started working with PhoneGap and Cordova hybrid platforms.
- Worked mostly on kids' apps that were used on mobile tablets.
- Built Android, iOS, Windows 8, Windows 7, and web apps using a single codebase.
Technologies: JavaScript, PhoneGap, Cordova, CSS, HTML5, Git, Cordova Plugins, Responsive UI, Push Notifications
Experience
Apollo 24|7 | Health and Medicine App
https://play.google.com/store/apps/details?id=com.apollo.patientappHelped develop Apollo 24|7, India's most trusted pharmacy app for online medicines, lab tests, and doctor consultations.
Apollo 24|7 is the best online doctor and pharmacy app, bringing medicine delivery, doctor consultations, and lab tests on one platform. With the Apollo 24|7 medicine app, users never have to worry about their medicine deliveries.
Apollo 24|7 is the best online doctor and pharmacy app, bringing medicine delivery, doctor consultations, and lab tests on one platform. With the Apollo 24|7 medicine app, users never have to worry about their medicine deliveries.
modUrn
https://apps.apple.com/au/app/modurn/id1267728410The modUrn app is a detailed and thoughtful platform to store and share a life story. To easily capture, share and collaborate details from a life story, whether it be yourself, a family member, a friend, or a much-loved pet.
The modUrn app is complimented by an urn and memento range with a unique design incorporating smart technology. Each memento or urn is fitted with a Bluetooth beacon which, in proximity, alerts you to a life story that can be viewed, enjoyed, and shared.
The modUrn app is complimented by an urn and memento range with a unique design incorporating smart technology. Each memento or urn is fitted with a Bluetooth beacon which, in proximity, alerts you to a life story that can be viewed, enjoyed, and shared.
Apps for Kids
When I was working with Sparx IT, a leading web and mobile app development company, I built a few apps for kids on the web, Android, iOS, and Windows using the common codebase.
Demo links:
• https://www.criticalthinking.com/software-demos/balance-benders/beginning.html
• https://www.criticalthinking.com/software-demos/riddle-rabbit-prek/index.html
Demo links:
• https://www.criticalthinking.com/software-demos/balance-benders/beginning.html
• https://www.criticalthinking.com/software-demos/riddle-rabbit-prek/index.html
LASHD
LASHD puts your self-care at your fingertips, with a range of high-quality beauty therapists and health and fitness gurus on demand. Too busy to make it to a salon? Would you prefer to book your beauty appointments for a time and place that suits you? LASHD puts you in control with the convenient, user-friendly mobile beauty appointment app on the market.
From hair, makeup, nails, lash extensions, and waxing to personal training – LASHD has all of your beauty, health, and wellness needs covered.
iOS App: Apps.apple.com/au/app/lashd/id1393913221
Android App: Play.google.com/store/apps/details?id=com.lashd.lashdapp
From hair, makeup, nails, lash extensions, and waxing to personal training – LASHD has all of your beauty, health, and wellness needs covered.
iOS App: Apps.apple.com/au/app/lashd/id1393913221
Android App: Play.google.com/store/apps/details?id=com.lashd.lashdapp
Education
2008 - 2012
Bachelor's Degree in Computer Science
Rajasthan Technical University - Rajasthan, India
Skills
Libraries/APIs
React, Redux-Saga, REST APIs, Node.js, React Redux, Vue, Google Maps, Google Maps API, Firebase Android SDK, Firebase iOS SDK, React Native for Web, OpenAI API, Three.js, AWS Amplify
Tools
Git, Cordova Plugins, Figma, Expo, Jenkins, Expo.io, Prisma, Auth0, Builder.io, Apple HealthKit
Languages
JavaScript, TypeScript, CSS, HTML5, HTML, GraphQL, Swift, Kotlin, PHP, Python
Frameworks
React Native, Redux, PhoneGap, Ionic, Angular, AngularJS, Next.js, Nuxt.js, Flutter, Tailwind CSS, Electron
Paradigms
Agile Software Development, Mobile Development, Responsive Web Design (RWD), Microservices, Cross-platform, REST, HIPAA Compliance
Platforms
Firebase, Mobile, Amazon Web Services (AWS), Android, iOS, Storyblok, Web, Amazon EC2
Storage
Realm, Cloud Firestore, MongoDB, NoSQL, RDBMS, MySQL, PostgreSQL
Other
Mobile Apps, Bluetooth, Mobile UI, Responsive UI, APIs, Full-stack, Leadership, Architecture, Software Design, Responsive Design, Videos, Video Streaming, Third-party Integration, Deployment, Integration, Digital Video, Geolocation, Technical Leadership, App Submission, Firebase Hosting, GitHub Actions, Mobile App Development, Push Notifications, Full-stack Development, Tailwind UI, User Interface (UI), UI Components, Payment APIs, Front-end, Design, Web Development, Google Calendar, WebSockets, Artificial Intelligence (AI), OpenAI GPT-4 API, Cordova, Location Services and Maps, 3D, Games, 3D Games, Mobile Security, Apple Pay
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