M Haseeb Sharif

- Tech Stack: MERN Stack (MongoDB, Express.js, React.js, Node.js), CoinGecko API, Stripe, AWS, MUI Key Responsibilities and Contributions: - Investment Logic & Financial Strategy Implementation * Engineered advanced backend logic for real-time cryptocurrency investment analysis, including profit/loss tracking and strategy-based buy/sell signals. * Conducted multiple client collaboration sessions to break down investment strategies into implementable technical logic. * Developed custom financial algorithms using user portfolio data, market trends, and fee structures to deliver actionable investment insights. * Integrated CoinGecko API to stream live crypto prices and ensure platform responsiveness to market changes. * Designed a responsive and intuitive UI using MUI, enabling users to view and interact with real-time investment data effectively. - Stripe Integration & Subscription Management * Integrated Stripe Billing and Subscription API to manage recurring payments, plan changes, and cancellations. * Developed secure webhook handlers to capture and process Stripe events such as payment failures, renewals, and refunds in real-time. * Built a custom refund system with eligibility validation and automated processing, synced with both Stripe and the user dashboard. * Ensured full synchronization between user account status and billing activity, enhancing transparency and reducing support requests. - Infrastructure & Deployment * Deployed backend and frontend services on AWS, ensuring high availability and scalability of core platform functions. * Managed environment configuration and API security to protect user data and ensure compliance with financial transaction standards. - Ongoing Maintenance * Providing regular support, bug fixes, and updates to ensure platform stability and adapt to API or market changes.

- Tech Stack: MERN Stack (MongoDB, Express.js, React.js, Node.js), Moment.js Key Responsibilities and Contributions: - Timezone Management & Localization * Implemented dynamic timezone detection based on the user's login session to ensure time-sensitive data (attendance, reports, schedules) is displayed in local time. * Standardized time storage in UTC and handled conversion on the frontend using Moment.js, ensuring cross-region accuracy and consistency. - Role-Based Access Control for 6 User Types * Designed and implemented a scalable RBAC (Role-Based Access Control) system supporting six distinct user roles (Admin, Franchise Owner, Manager, Instructor, Staff, Viewer). * Applied permission checks across backend APIs and frontend components, enabling custom dashboards and views based on user responsibilities. - Real-Time Reporting & Statistical Calculations * Developed optimized backend aggregation logic for computing attendance statistics, weekly reports, and franchise comparisons. * Built dynamic frontend components for data filtering, grouping, and visualization to deliver instant, insightful analytics. * Implemented caching strategies to improve performance of frequently accessed data. - Ongoing Maintenance * Providing continuous support, resolving user issues, and optimizing report performance as the platform scales.