Varan Bhalla

Mastercard

React, Javascript, Python, AWS, SQL, SpringBoot, Experiences, Payments, MicroServices

• Building enterprise-scale web and backend systems in the payments and experiences domain
• Designing and maintaining scalable monolith and microservices-based architectures
• Developing user-facing features and secure, high-performance APIs
• AI Engineering initiatives, working with distributed teams
• Collaborations with platform, product, testing and business teams
• Contributed to system design for servers, databases, documentation
• Ensuring production-grade quality, end-to-end testing, code reviews

Webknot Technologies

React-Native, React, Next, Python, Node, AWS, Typescript, MicroFrontends, Android, iOS

• Worked on large-scale web and mobile products like Geekyants, Render Networks, Pixid.ai, and Jatya
• Led performance improvements for React MicroFrontends, Python, AWS
• Built Node.js and FastAPI backend services, automations, data engineering, visualization, dashboards, integrations
• Feature implementation on modules like maps, gps, os, media, gallery, responsiveness, multi-lang, react-native upgrades, etc for iPads, iPhones, web, android, tablets
• Implemented native Android (Kotlin) and iOS (Swift) features along with React Native Modules for performance critical features
• Allied with global teams from Canada, UK, India, Australia

Webknot Technologies

React, React-Native, Node, MongoDB, AWS, Typescript, Jest, Sonarqube, Sass, Redux

• Contributed to healthcare and industrial automation products like ABB, Gardian EMS platforms
• Delivered 250+ improvements across frontend, backend with stability and user experience, part of deployment and release cycles
• Application performance optimization, enterprise-scale applications for ABB's R&D teams
• Practiced test-driven development, enforced code quality using SonarQube, efficient communications

Redbytes Software

React, React-Native, Node, MongoDB, AWS

• Worked on the company's flagship Cost Calculator mobile app (10,000+ downloads)
• Developed backend REST APIs, core functionalities, and UI components
• Built image gallery, call scheduling, cost calculation, calendar features
• Deployed Android builds and fixed production crashes, Google Play Store
• Contributed to multiple products like Edsys, Pets, and Edocs

Dcoder

React, Node, MongoDB, Bootstrap, Material UI

• Built drag-and-drop image gallery taking reference from Trello
• Implemented REST APIs and data handling for video embedding using YouTube SDK
• Developed responsive UIs from scratch with reusable components and theming
• Collaborated with stakeholders from TechStars

Algomastery

React, Node, AWS, MongoDB

• Built and deployed an end-to-end web application on AWS with Serverless
• Implemented rate limiting and caching on REST APIs to reduce database load
• Improved network performance by ~25% for search and filtering features
• Learnt the benefits of serverless architecture over servers for unpredictable loads