M.talha

Full Stack Engineer

MicoTechX • Temps plein

Dec 2025 - Present • 5 mos

- Designed event-driven architecture using Kafka for async request processing, approval orchestration, and cross-service provisioning ensuring fault tolerance, loose coupling, and horizontal scalability. - Built Kafka-based event-driven flows for identity lifecycle management, enabling reliable async processing with automatic retry logic and failure handling. - Implemented consumer–producer patterns with concurrency tuning (3 concurrent consumers), acknowledgment-based fault tolerance, and retry windows (3-min max, 1-min threshold) to prevent infinite loops and system overload. - Resolved critical MultiBagFetchException by refactoring Hibernate entity fetch strategies, eliminating ORM runtime failures and stabilizing request detail retrieval. - Applied Factory, Abstract Factory, Builder, and Composite design patterns across service layers for maintainability, extensibility, and clean separation of concerns. - Revamped access portal UI replacing dialog-based modals with slide-in sheet components for improved UX and design system alignment. - Integrated frontend with backend APIs, replacing mock data with real-time data handling and addressing edge cases for production-like scenarios. - Optimized portal height for consistent rendering across devices with skeleton-based loaders, shadow/blur effects during transitions, and graceful error fallbacks. - Authored technical documentation in Confluence covering Cart, Tiles, Access Request flows, and approval orchestration.

Full Stack Engineer

Digital Upgraders LLC

Jul 2025 - Jan 2026 • 6 mos

Designed, developed, and maintained production-grade web applications using Next.js, TypeScript, Express.js, Supabase, and Drizzle ORM, ensuring scalability and long-term maintainability. • Led the end-to-end deployment lifecycle, including CI/CD pipelines, production releases, environment configuration, and rollback strategies to guarantee zero-downtime deployments. • Migrated deployments from AWS to Fly.io, re-architecting infrastructure to achieve significant cost reduction while maintaining performance, reliability, and global availability. • Configured database regions and replicas to optimize latency and performance for geographically distributed users. • Implemented and optimized infinite scrolling and responsive layouts, resolving UI/UX issues across desktop and mobile devices. • Identified and resolved critical production bugs, including reported posts handling, content moderation flows, and real-time user interaction failures. • Enhanced cross-platform performance on Android, iOS, and Safari browsers by optimizing rendering pipelines and input handling, eliminating scroll lag. • Refactored legacy monolithic files into a modular, scalable architecture, introducing reusable components and custom React hooks for validation logic (email, Instagram, phone, website). • Integrated and maintained RESTful APIs, following clean architecture and best practices for secure and seamless frontend-backend communication. • Migrated transactional and notification email workflows to Plunk, improving deliverability, observability, and scalability of email communications. • Actively monitored production systems, performed root-cause analysis, and delivered fast, reliable fixes to ensure high system uptime and user trust.