# Avinash Kumar > Full-Stack Staff Engineer | Specializing in Web Architecture, Performance, AI Integration, Mentorship & End-to-End Ownership. Location: San Francisco, California, United States Profile: https://flows.cv/avinashkumar1 Results-oriented Staff Engineer with 13+ years of experience in full-stack platform development across web, mobile, and cloud. I drive technical strategy and architect secure, scalable systems that deliver impactful, user-centered products. My leadership empowers high-performing teams to achieve exceptional outcomes. My technical foundation includes React, Next.js, GraphQL, AWS, and CI/CD automation, complemented by a growing expertise in leveraging AI (including RAG and multimodal AI) to optimize engineering processes and enhance user experiences. During my tenure at Optum, I architected a multi-team rewards platform, spearheaded cloud-native modernization efforts resulting in 20% reduction in deployment time and championed DevOps transformation, significantly accelerating delivery cycles. I am passionate about building future-proof systems that align with business objectives, fostering developer efficiency, and applying cutting-edge technologies to solve significant challenges. I excel at bridging the gap between product vision and technical execution, leading teams to transform complexity into elegant, impactful solutions. ## Work Experience ### Staff Software Engineer @ UnitedHealth Group Jan 2022 – Present | San Francisco, California, United States - Led a team of front-end developers in designing and implementing user interfaces for web applications, ensuring adherence to coding standards and best practices. - Led the design and development efforts for a new web application leveraging Next.js, a React-based framework, to enhance performance, scalability, and maintainability. - Leveraged AWS services such as AWS AppSync for building scalable GraphQL APIs, AWS Lambda for serverless computing, and AWS Amplify for full-stack development, facilitating rapid development and deployment of web applications. Implemented AWS SAM (Serverless Application Model) with CloudFormation to define and deploy serverless applications, optimizing resource management and infrastructure as code practices. - Collaborated with cross-functional teams including product managers, designers, and back-end engineers to deliver high- quality software products within project timelines. - Mentored junior engineers, conducting code reviews, providing technical guidance, and fostering a culture of continuous learning and improvement. - Migrated CI/CD pipeline from Jenkins to Github actions. ### Senior Software Engineer @ Rally Health Jan 2019 – Jan 2022 | San Francisco Bay Area - Assumed the role of Lead Front end developer for the Rewards and Incentives team, steering the team towards successful project completion. - Developed common reusable components that were adopted across Rally and UHG by different apps, enhancing efficiency and consistency. - Initiated and executed a roadmap for migrating rewards UI from Angular to React, successfully completing the transition. Managed the migration of 4 internal tooling applications from Angular to React, ensuring smooth transition and minimal downtime. - Implemented Rally Design System (Design tokens) for theming apps across Rally and UHG, improving user interface consistency. - Proactively identified performance issues in rewards-ui and implemented improvements, resulting in a 35% performance increase. - Reduced mono repo build time by removing unwanted packages and simplifying bootstrapping and loading of the application with lazy loading, enhancing efficiency. - Played a key role in building CI/CD pipelines and transitioned several applications from manual deployment to CI/CD, improving deployment speed and reliability. - Streamlined the efforts of 3 UI teams, fostering collaboration and efficiency. - Implemented automation testing using WebDriverIO and integrated it with CI pipeline. ### Senior Front End Engineer @ ON24 Jan 2018 – Jan 2019 | San Francisco Bay Area - Worked on a marketing platform, ON24, aimed at engaging customers and converting that engagement into valuable data to drive pipeline and revenue. - Spearheaded the migration of legacy front-end code to modern frameworks (React.js), resulting in improved performance and maintainability. - Created a roadmap and led a team to make the application 100% accessible. - Headed a team to redesign the mobile version of the application from scratch using the latest tech stack (React.js). - Enhanced the live streaming performance of the application by implementing HTTP Live Streaming (HLS) with a Linux Wowza server. - Implemented Digital Rights Management (DRM) for streams. - Developed a QA bot which significantly reduced response time for user questions asked during the webinar. - Successfully migrated version control system (VCS) from Perforce to Git, streamlining the development process and improving collaboration among team members. ### Software Developer @ Apple Jan 2016 – Jan 2018 | Sunnyvale, California - Tasked with the architecture and implementation of the front-end layer for the iCloud Support App, a unified portal for Apple Care agents/advisors globally, assisting with device or account issues. - Developed a framework to automate the escalation workflow in a Role/Permission based application, resulting in a 75% reduction in customer problem resolution time. - Implemented accessibility features, enabling Apple to build a team of vision-impaired advisors. - Proposed and developed a prototype for migrating the legacy codebase from jQuery/Backbone to Angular or React and Redux. - Served as a UI lead, providing guidance and proposing UI enhancements for various projects and teams within the iCloud area. ### Technology Analyst @ Infosys Jan 2016 – Jan 2016 | Mangalore Area, India Front End Developer ### Senior System Engineer @ Infosys Jan 2014 – Jan 2016 | Mangalore Area, India Front End Developer ### System Engineer @ Infosys Jan 2013 – Jan 2014 UI Developer. ### System Engineer @ Infosys Jan 2012 – Jan 2013 UI Developer ## Education ### Bachelor of Technology (BTech) in Computer Science Jaypee University of Information Technology ## Contact & Social - LinkedIn: https://linkedin.com/in/avikumar8747 --- Source: https://flows.cv/avinashkumar1 JSON Resume: https://flows.cv/avinashkumar1/resume.json Last updated: 2026-04-12