Arjun is available for hire
Hire ArjunArjun Teotia
Verified Expert in Engineering
Cursor AI Developer
Pune, Maharashtra, India
Toptal member since January 18, 2026
Bio
With over 10 years of experience in architecting, building, and leading end-to-end software products, Arjun has consistently delivered high-impact solutions with a strong emphasis on user experience, platform scalability, system reliability, and technical excellence. As a technical lead, he combines hands-on engineering capability with clear communication, structured execution, and team mentorship.
Portfolio
Deque Sytems
React, JavaScript, AWS IAM, Amazon S3 (AWS S3), PostgreSQL 10, REST APIs, CSS...
Infinity Works (Part of Accenture)
AWS IoT, React, MERN Stack, Mobile, Azure, REST APIs, CSS, MySQL...
Gnxt Systems
TypeScript, React, MongoDB, Socket.IO, TCP/IP, Google Maps API, REST APIs, CSS...
Experience
- JavaScript - 10 years
- PostgreSQL 10 - 7 years
- React - 6 years
- React Native - 6 years
- AWS IoT - 5 years
- Cursor AI - 4 years
- Docker - 4 years
- TypeScript - 3 years
Preferred Environment
MacOS, Cursor AI, React, TypeScript, Docker, AWS IoT, GitHub Actions, CI/CD Pipelines, Slack
The most amazing...
...thing I built was an EV charging platform integrating maps, cloud APIs, and TCP hardware control, enabling real-time charger discovery and session management.
Work Experience
Lead SDE
2023 - PRESENT
Deque Sytems
- Earned Employee of the Quarter recognition for high technical contribution, ownership, and positive impact on customer-facing outcomes.
- Designed and implemented features that reduced manual testing effort for accessibility auditors by an estimated 20–30%, resulting in faster audit cycles.
- Built reusable UI components and back-end services that improved tester throughput and consistency, reducing rework and verification loops.
- Enhanced CI/CD pipelines, reducing deployment time and environment setup friction, contributing to more predictable release schedules.
- Collaborated with cross-functional stakeholders, including product managers, designers, and accessibility specialists, to deliver compliant and user-friendly experiences.
- Architected and implemented front-end and back-end components using React, Node.js, and MassiveJS backed by PostgreSQL.
- Leveraged Axe-Core and Deque’s internal auditing stack to increase the accuracy of accessibility findings and streamline reporting.
Technologies: React, JavaScript, AWS IAM, Amazon S3 (AWS S3), PostgreSQL 10, REST APIs, CSS, MySQL, Python, API Development, Authorization, Authentication, User Interface (UI), Amazon Web Services (AWS), API Integration, OpenAI, Back-end, Git, Linux, PostgreSQL, Server Architecture, Microservices, Full-stack, GitHub, Chrome Extensions, APIs, User Account Control (UAC), Amazon Marketplace Web Service (MWS)
Associate Manager (Mobile Tech Lead)
2022 - 2023
Infinity Works (Part of Accenture)
- Served as mobile tech lead for a digital beauty application initiative for L’Oréal, managing a squad of engineers across mobile and back-end workstreams.
- Architected core application modules in React Native using TypeScript and Redux, establishing a foundation for future feature expansion.
- Integrated back-end APIs built on the MERN stack, deployed on Azure cloud services to support authentication, content delivery, and analytics.
- Collaborated directly with L’Oréal’s global product, UX, and design teams to align mobile user experience with brand and business objectives.
- Collaborated directly with L’Oréal’s global product, UX, and design teams to align mobile user experience with brand and business objectives.
- Contributed to technical documentation, feature specifications, and backlog grooming to support roadmap clarity.
Technologies: AWS IoT, React, MERN Stack, Mobile, Azure, REST APIs, CSS, MySQL, API Development, Authorization, Authentication, User Interface (UI), Amazon Web Services (AWS), iOS, Android, Expo.io, Camera API, API Integration, OpenAI, Back-end, Git, Linux, PostgreSQL, Server Architecture, Microservices, Google TV, Android TV, Mobile App Development, Next.js, Puppeteer, Full-stack, Tailwind CSS, GitHub, APIs, Google Directions API, Snowflake, POS, Claude Code, Amazon Marketplace Web Service (MWS), Digital Payments, App Store
Mobile Lead Engineer
2021 - 2022
Gnxt Systems
- Led mobile development of Blink 2.0, a cross-platform EV charging application for locating stations, navigation, and real-time charging session management.
- Integrated Google Maps and Apple Maps for station discovery, navigation, and geolocation-based filtering.
- Implemented local TCP-based hardware communication, enabling users to connect to EV charging stations securely and initiate charging sessions.
- Built reusable React Native UI components and core application modules for both iOS and Android platforms.
- Collaborated with back-end and hardware engineering teams to integrate MERN APIs, real-time status updates, and charging session workflows.
- Participated in sprint planning, feature estimation, code reviews, and release coordination to support predictable product delivery.
Technologies: TypeScript, React, MongoDB, Socket.IO, TCP/IP, Google Maps API, REST APIs, CSS, MySQL, API Development, Authorization, Authentication, User Interface (UI), Amazon Web Services (AWS), iOS, Android, Expo.io, Camera API, API Integration, Reminders, FlutterFlow, Back-end, Git, Linux, PostgreSQL, Server Architecture, Microservices, Google TV, Android TV, Mobile App Development, tvOS, Next.js, Full-stack, Tailwind CSS, GitHub, APIs, Internet of Things (IoT), QR Codes, Google Directions API, POS, Claude Code, Amazon Marketplace Web Service (MWS), Digital Payments
Senior Software Engineer
2021 - 2021
R Systems
- Developed a cross-platform OTT streaming application for a US-based media company, supporting mobile, tablet, and smart TV devices.
- Implemented video playback, authentication, subscription flows, and UI components aligned with OTT platform UX standards.
- Integrated CI/CD pipelines to streamline build, testing, and deployment processes for Android, iOS, and TV platforms.
- Collaborated with US-based designers and engineering teams across Agile sprints to ensure seamless feature delivery and UX consistency.
- Utilized Jest for unit testing and instrumentation, improving component reliability and reducing regression issues.
Technologies: Agile, AWS IoT, React, Video Streaming, Lazy Loading, Caching, Apple TV, Android SDK, REST APIs, CSS, MySQL, API Development, Authorization, Authentication, User Interface (UI), Amazon Web Services (AWS), iOS, Android, Expo.io, Camera API, API Integration, Reminders, FlutterFlow, Back-end, Git, Linux, PostgreSQL, Server Architecture, Microservices, Google TV, Android TV, Mobile App Development, tvOS, Next.js, Full-stack, Tailwind CSS, GitHub, APIs, QR Codes, Google Directions API, POS, Claude Code, Amazon Marketplace Web Service (MWS), Digital Payments
Software Developer
2018 - 2021
Velocity Software Solutions Pvt. Ltd.
- Received multiple internal recognitions, including Employee of the Month (x2) and an Excellence Award for project delivery.
- Developed and maintained multiple eCommerce storefronts using OpenCart, PHP, and MySQL with custom modules and UX optimizations.
- Built a stock management system for a UK client that improved order processing efficiency and streamlined operational workflows.
- Reworked checkout and payment flows using PayPal and Stripe, enhancing the purchase experience and reducing cart friction.
- Contributed enhancements to UKSoccershop.com, including infinite scrolling UI and improved checkout performance.
Technologies: JavaScript, PHP, OpenCart, Laravel 5, HTML, CSS, REST, Ajax, REST APIs, MySQL, API Development, Authorization, Authentication, User Interface (UI), Amazon Web Services (AWS), API Integration, Back-end, Git, PostgreSQL, Server Architecture, Microservices, Full-stack, Laravel, GitHub, APIs
Co-founder & Team Lead
2018 - 2021
CodeKrypt Technologies Pvt. Ltd.
- Co-founded a software development studio delivering mobile and web products across mobility, edtech, and consumer app domains.
- Led engineering and product delivery for CityDrive, a ride-hailing platform with real-time driver tracking, Google Maps navigation, and fleet dashboards.
- Managed development of TutMe, a school management ERP that onboarded 500+ schools across Delhi NCR within two years.
- Built a stock management system for an eCommerce client that reduced order processing time by around 60% and increased revenue by around 40%.
- Delivered and maintained multiple React Native applications supporting maps, payments, real-time sockets, and back-end integrations.
- Worked directly with founders and clients on requirements, proposals, estimates, and product roadmaps, driving end-to-end delivery and deployment.
- Mentored a small engineering team while owning architecture, code reviews, deployments, and cloud infrastructure setup.
Technologies: React Native, React, AWS IAM, PHP, Firebase, Google Maps, Socket.IO, REST APIs, MySQL, API Development, Authorization, Authentication, User Interface (UI), Amazon Web Services (AWS), Camera API, API Integration, Reminders, Back-end, Git, PostgreSQL, Server Architecture, Microservices, Mobile App Development, Full-stack, Laravel, GitHub, APIs, Point of Sale
Experience
Axe Auditor – Enterprise Web Accessibility Testing and Reporting Platform
https://www.deque.com/axe/auditor/• Contributed to the development of Axe Auditor, a large-scale accessibility auditing platform used by enterprise clients to run structured WCAG compliance audits.
• Worked on building responsive assessment interfaces, automated axe-core rule integration, reporting dashboards, and collaboration workflows.
• Integrated CI/CD pipelines, MassiveJS, PostgreSQL data pipelines, and accessibility scoring mechanisms.
• Helped ship features used by Fortune 500 organizations to streamline accessibility compliance.
• Worked on building responsive assessment interfaces, automated axe-core rule integration, reporting dashboards, and collaboration workflows.
• Integrated CI/CD pipelines, MassiveJS, PostgreSQL data pipelines, and accessibility scoring mechanisms.
• Helped ship features used by Fortune 500 organizations to streamline accessibility compliance.
MyHelp – Mental Health and Emotional Well-being Mobile Application
MyHelp is a mental health mobile application designed to support emotional well-being through mood tracking, journaling, guided activities, and personalized wellness content. I contributed to building the core user experience and feature workflows in React Native while collaborating with UK stakeholders, designers, and content teams. The work included front-end architecture, secure API integrations, and UX adjustments tailored for sensitive mental health use cases. The app was in active development and undergoing stakeholder validation during my engagement.
Blink 2.0 — EV Charging Platform
https://blinkcharging.com• Led the development of an end-to-end EV charging platform enabling users to locate charging stations on maps, connect to hardware via TCP, and manage charging sessions in real time across iOS and Android.
• Integrated React Native with MERN back-end services, Google and Apple Maps, and hardware communication layers.
• Delivered a seamless user experience for EV drivers while collaborating with product, back-end, QA, and hardware teams.
• Integrated React Native with MERN back-end services, Google and Apple Maps, and hardware communication layers.
• Delivered a seamless user experience for EV drivers while collaborating with product, back-end, QA, and hardware teams.
SportsTV (OTT Streaming Platform)
• Developed a cross-platform OTT streaming application from scratch for mobile, tablet, and smart TV devices.
• Implemented a high-performance EPG (Electronic Program Guide) using lazy loading, caching, and Pure Components to optimize rendering.
• Integrated playback, user authentication, subscription logic, and CI/CD pipelines.
• Collaborated closely with US-based designers and developers to ship a consumer-grade, production OTT experience.
• Implemented a high-performance EPG (Electronic Program Guide) using lazy loading, caching, and Pure Components to optimize rendering.
• Integrated playback, user authentication, subscription logic, and CI/CD pipelines.
• Collaborated closely with US-based designers and developers to ship a consumer-grade, production OTT experience.
CityDrive – Real-time Taxi Booking and Fleet Management Platform
• Led the development of a real-time ride-hailing platform similar to Uber, covering both passenger and driver applications.
• Built interactive maps, real-time ride requests, driver tracking, fare calculations, and in-app communication using Socket.IO and Google Maps APIs.
• Developed iOS and Android apps, fleet dashboards, and back-end components.
• Managed a team of six engineers and delivered a production-ready mobility ecosystem adopted by taxi operators.
• Built interactive maps, real-time ride requests, driver tracking, fare calculations, and in-app communication using Socket.IO and Google Maps APIs.
• Developed iOS and Android apps, fleet dashboards, and back-end components.
• Managed a team of six engineers and delivered a production-ready mobility ecosystem adopted by taxi operators.
BeautyApp – Personalized Beauty and Skin Care Companion (L’Oréal)
• Worked as the Tech Lead on a beauty companion app initiative for L’Oréal, focused on personalized recommendations, beauty routines, and content delivery.
• Led the early architecture and core mobile components using React Native with TypeScript and Azure-based APIs.
• Collaborated with L’Oréal product and design teams on UX flows, authentication, and content distribution.
The project was paused due to shifts in stakeholder strategy, but the technical foundation and product concepts were validated.
• Led the early architecture and core mobile components using React Native with TypeScript and Azure-based APIs.
• Collaborated with L’Oréal product and design teams on UX flows, authentication, and content distribution.
The project was paused due to shifts in stakeholder strategy, but the technical foundation and product concepts were validated.
Education
2011 - 2015
Bachelor's Degree in Information Technology
Institute of Engineering & Technology - Lucknow , India
Certifications
JANUARY 2023 - PRESENT
Turing Certified Talent
Turing
OCTOBER 2021 - PRESENT
Uplers Certified Talent
Uplers
Skills
Libraries/APIs
React, Node.js, Socket.IO, REST APIs, API Development, Camera API, Google Directions API, Google Maps SDK, Stripe, Google Maps API, Sockets, Puppeteer, Amazon Marketplace Web Service (MWS), Google Maps
Tools
Slack, Git, GitHub, Expo.io, Claude Code, AWS IAM
Languages
TypeScript, SQL, JavaScript, GraphQL, CSS, PHP, C, Java, HTML, Python, Snowflake
Frameworks
React Native, Jest, Express.js, Next.js, Laravel, Tailwind CSS, Android SDK, Laravel 5
Paradigms
Agile, Microservices, API Architecture, REST
Platforms
MacOS, AWS IoT, AWS Lambda, Amazon Web Services (AWS), Linux, Docker, Mobile, iOS, Android, FlutterFlow, Google TV, Android TV, tvOS, WordPress, WooCommerce, RevenueCat, Azure, Apple TV, Firebase, OpenCart
Storage
Amazon S3 (AWS S3), PostgreSQL 10, MySQL, PostgreSQL, Firebase Realtime Database, MongoDB
Other
Cursor AI, Payment APIs, Deployment, MERN Stack, Lazy Loading, Authorization, Authentication, User Interface (UI), API Integration, OpenAI, Back-end, Server Architecture, Full-stack, Web Development, eCommerce, API Design, HTML Editing, APIs, Payments, Geolocation Detection, User Account Control (UAC), Push Notifications, Geofencing, Point of Sale, POS, Digital Payments, Fintech, App Store, Cloud Infrastructure, Startup Consulting, Technical Project Management, GitHub Actions, CI/CD Pipelines, TCP/IP, Streaming, Axe, Reminders, Mobile App Development, AI Agents, Prompt Engineering, Artificial Intelligence (AI), Agentic AI, Chrome Extensions, QR Codes, Video Streaming, Caching, Ajax, Internet of Things (IoT)
Collaboration That Works
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
1
Share your needs
Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2
Choose your talent
Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3
Start your risk-free talent trial
Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.
Top talent is in high demand.
Start hiring