SUMIT
CHAHAR
|
A Software Engineer creating Intuitive Digital Experiences.
Professional Experience
I help growing companies ship performance-critical web and mobile applications by owning systems end to end from frontend architecture and mobile UX to backend APIs, data flows, and infrastructure. This has meant building schedulers, CMS platforms, admin tools, and monetization features that directly impact growth and efficiency.
SOFTWARE ENGINEER AT Inspect Element HKHong Kong SAR (Remote)
Jun 2024 - Oct 2025
Designed and developed the HKJC LevelMind platform using a custom Payload CMS, building reusable, schema-driven components and shared UI primitives while optimizing image delivery and bulk media uploads to support a content- and media-heavy website with high concurrent traffic and consistent performance.
Contributed to the development of multiple e-commerce and fintech applications using React Native, working independently across the stack by owning end-to-end feature delivery from frontend implementation to backend integrations, ensuring scalable architecture, reliable data flows, and high-quality user experiences.
Designed and developed a scheduler and slot booking system for the GetClient platform, extending and contributing to a forked React calendar library by adding new features and fixing core limitations, including support for rendering multiple event tiles within a single time cell and dynamically managing table dimensions based on event density and selected sales team members. Built multiple calendar table views with in-calendar filtering capabilities to improve usability at scale, and implemented performance and income analytics dashboards to track meetings, leads, and revenue generated by sales teams in real time.
SOFTWARE ENGINEER AT GRANTITHong Kong SAR (Remote)
Feb 2023 - Jun 2024
Contributed on Frontend and Backend development of a custom CMS and admin panel tightly integrated with the mobile app, enabling real - time content updates and eliminating embedded web views, resulting in faster performance and a more native user experience.
Developed and shipped personalized deals and credit card mapping features for a financial mobile app, strengthening monetization and user engagement and contributing to more than 2× user base growth.
Actively participated in PR reviews across the mobile app, admin panel, and backend services to maintain consistent coding standards and architectural quality. Collaborated closely with engineers to suggest improvements around readability, performance, and long-term maintainability. Helped establish shared best practices that reduced regressions and improved overall code quality across the stack.
JUNIOR SOFTWARE ENGINEER AT GRANTITHong Kong SAR (Remote)
May 2022 - Jan 2023
Designed and built a Permissions Management System across React UI and Node.js backend to enable scalable, self - serve operations for non - technical teams; streamlined loan request workflows and increased daily request handling capacity by more than 2 folds.
Contributed to Improvement in operations team efficiency through redesigned admin panel UI/UX for critical flows like cashin/cashout data forms, significantly reducing request processing time and friction for operations teams.
Refactored legacy React codebases to improve performance, consistency, and long - term maintainability; optimized admin panel load times by ~10 % and played a key role in a full authentication flow redesign aligned with mobile - first UX and performance best practices.
Services
Web & Mobile App Development
Delivering end-to-end web and mobile applications, from product architecture and feature development to deployment, performance optimization, and scaling.

Backend Development
Designing and implementing robust backend systems using Node.js, with a strong focus on secure APIs, authentication, data integrity, and handling high-concurrency traffic.

CMS & Admin Platforms
Developing custom CMS and admin platforms that enable teams to manage content, operations, and workflows efficiently without constant engineering involvement.

I USE
MODERN TECH STACK
I work with a modern, production-ready tech stack focused on scalability, performance, and long-term maintainability. My day-to-day tools include React, Next.js, and React Native on the frontend, with Node.js powering backend services and APIs. I've worked extensively with PostgreSQL and MongoDB for data-heavy applications, along with custom CMS platforms like Payload. This stack allows me to build fast, reliable systems that handle real-world traffic, complex workflows, and evolving product requirements without sacrificing developer experience or code quality.