Karamveer – React, Node.js, Next.js

An AI-powered multi-tenant trading platform designed for traders, quant engineers, and teams launching white-label trading products. The platform combines real-time trading experiences, strategy development workflows, AI-assisted tooling, backtesting, and marketplace-style discovery features within a shared scalable infrastructure. Built to support rapid product launches, high-frequency activity, monetization, and cross-brand scalability across fintech and cryptocurrency products.

• Architected and shipped a multi-tenant AI trading platform supporting multiple white-label brands on a shared React, Next.js, TypeScript, Node.js, Python, and Supabase stack;
• Built real-time trading and marketplace experiences, including market activity feeds, notifications, and data-dense product surfaces;
• Developed an embedded code editor and AI-assisted workflow tooling for quant engineers to build, backtest, and deploy algorithmic strategies;
• Designed scalable frontend state architecture and performance-oriented patterns for high-frequency real-time interfaces;
• Implemented server-side rendering, hydration, and cache-aware data-fetching strategies to improve first-load performance and consistency;
• Contributed to backend and platform systems, including event pipelines, discovery infrastructure, monetization flows, onboarding, and access control;
• Built observability and telemetry pipelines to improve visibility into regressions, production issues, and platform performance;
• Created reusable shared foundations that reduced new-brand launch effort and improved scalability across products and workflows.

A multi-chain crypto wallet and fintech platform designed for users managing digital assets, trading activity, staking, and regulated financial workflows. The product unified wallet management, real-time trading experiences, rewards, and transaction flows across multiple blockchain ecosystems, including Bitcoin, Ethereum, Hedera, Solana, and XRP. Built with strong focus on security, performance, accessibility, and financial-grade reliability to support complex real-world crypto and fintech operations.

• Built and improved frontend and platform experiences across trading terminals, wallet flows, staking, balances, transfers, transaction history, and asset activity;
• Contributed to a cross-chain migration pipeline responsible for $50M+ in digital asset transfers, with strong emphasis on reliability, validation, and user trust;
• Engineered high-performance trading interfaces, including order books, live trade feeds, and candlestick charts for real-time data-dense workflows;
• Designed scalable frontend state management and rendering patterns to keep financial interfaces fast and reliable under frequent updates;
• Implemented responsive, accessible, and WCAG-aligned experiences that made complex financial actions clearer and easier to trust;
• Integrated frontend systems with GraphQL APIs, backend services, and blockchain platform capabilities to support secure multi-chain transaction flows end to end;
• Contributed to multi-chain support across Bitcoin, Ethereum, Hedera, Solana, and XRP;
• Helped launch a staking platform that secured $2M+ TVL on day one, delivering user-facing staking, rewards, and asset activity experiences;
• Collaborated across product, design, and backend teams to deliver polished production-ready fintech experiences with strong emphasis on performance, correctness, and maintainability.

A large-scale SaaS and operational platform supporting CRM, billing, compliance, and customer service workflows for millions of users. The product combined internal operational tools, workflow-heavy dashboards, and customer-facing interfaces with a strong focus on usability, accessibility, performance, and maintainability. Built around a modular frontend architecture and design-system-driven UI to improve consistency, scalability, and efficiency across complex business operations.

• Modernized large-scale SaaS workflows across CRM, billing, compliance, and customer service systems used by millions of users;
• Built interactive internal tools and workflow-heavy interfaces using React, Next.js, TypeScript, Redux-style state management, and modular component architecture;
• Created reusable frontend patterns and design-system-driven UI to make complex operational workflows clearer, more consistent, and easier to maintain;
• Integrated frontend applications with GraphQL APIs, Apollo Client, FastAPI, Pub/Sub, RabbitMQ, and distributed backend services to support reliable real-time and asynchronous experiences;
• Applied accessibility, responsive design, and polished interaction patterns to improve usability across operational and customer-facing workflows;
• Improved reliability and frontend performance through testing, code splitting, lazy loading, and bundle optimization using Playwright, Vitest, React Testing Library, Webpack, and Vite;
• Contributed to event-driven and containerized platform systems using Docker, Kubernetes, AWS, Kafka, and CDN infrastructure to support scalable production delivery;
• Worked cross-functionally across frontend, backend, and platform teams to modernize legacy systems and deliver high-quality production interfaces.

An e-commerce and productivity platform focused on checkout, content editing, and scheduling workflows. The product combined secure transactional experiences, rich-text editing capabilities, and meeting organization features within responsive customer-facing interfaces. Built with strong emphasis on usability, smooth interactions, and cross-device consistency to make everyday workflows faster and easier for users.

• Integrated secure Stripe payment flows to support reliable checkout and transactional user experiences;
• Built an intuitive rich-text editing experience with React and Lexical for content creation and formatting workflows;
• Developed a responsive meeting organizer application supporting scheduling workflows and cross-device usability;
• Created polished frontend experiences across payments, editor flows, and productivity features with a strong focus on clarity and responsiveness;
• Improved interaction quality and overall usability across customer-facing product surfaces;
• Collaborated with engineering and product teams to ship production-ready features with attention to UX and maintainability.