Sunil Gautam

Senior Frontend Engineer with 5.7 years of experience architecting and building scalable, high-performance SaaS and enterprise web applications with React.js, Next.js, and TypeScript. Specialized in frontend architecture, reusable design systems, rendering and load-time performance optimization, and high-density real-time data interfaces. Proven record of leading frontend modernization, establishing engineering standards, and mentoring developers while partnering with product, backend, and DevOps teams in Agile environments.

Senior Software Engineer at Dot AI (2024-02 – 2026-07)

AI-powered logistics & asset-intelligence SaaS platform (Dot Oracle) integrated with IIoT hardware for real-time asset monitoring and tracking.

• Led frontend modernization of a customer-facing enterprise platform, independently building 13 of 17 core modules on a scalable, component-driven architecture.
• Architected a dual-design migration on Next.js App Router hybrid routing that let legacy and redesigned UIs coexist, enabling zero-downtime rollout and seamless user transition.
• Reduced bundle size by 30% and improved load performance by 35% through route-based code splitting, lazy loading, memoization, rendering optimization, and asset optimization.
• Re-engineered high-volume real-time map tracking with Leaflet clustering and rendering optimization to stably render 10,000+ live asset markers.
• Established frontend engineering standards (reusable patterns, scalable structure, testing with Jest and React Testing Library) and implemented WCAG 2.2 accessibility plus enterprise authorization (Keycloak, RBAC/ABAC).
• Partnered with backend and DevOps on API contracts, caching, and CI/CD, and mentored developers through code reviews and architecture discussions.

Senior Software Developer at Hexagon (2021-09 – 2024-01)

• Led development of enterprise analytics dashboards and data-visualization workflows (React.js, Redux, AG Grid, Highcharts) over high-density datasets, delivering production-grade grid and charting solutions with improved rendering performance.
• Built reusable, component-driven frontend architecture with React.js, TypeScript, SCSS, and Material UI to improve maintainability and UI consistency.
• Managed framework upgrades, dependency modernization, and third-party integrations with minimal production impact and improved stability.
• Contributed to REST API and GraphQL design and optimized frontend–backend integration for efficient data handling; collaborated cross-functionally across sprint planning, backlog refinement, and estimations in Agile cycles.

Software Developer at Daffodil Software (2021-01 – 2021-09)

• Built scalable React.js applications and reusable UI components with responsive, asynchronous data workflows.
• Optimized Node.js and Express.js APIs by restructuring endpoints and improving query efficiency, reducing redundant data fetching and improving frontend responsiveness.
• Delivered full-stack workflows across multiple business modules (React.js, Node.js, Express.js, MongoDB) and resolved critical production issues to improve stability and performance.

B.E. in Computer Science & Engineering – Chandigarh University (2017 – 2021)