Leading backend engineering for ShareTrip's Hotel and Lifestyle verticals, architecting scalable systems for B2C and B2B platforms serving 10-15K monthly active users.

• Architected and launched international hotel booking system integrating 2.2M+ properties with sub-30s response time for initial results and progressive search, processing 5,000+ monthly bookings across B2C and B2B with 1,000+ daily searches.
• Shipped 4 lifestyle verticals (Shop, Vouchers, Mobile Recharge, Utility Bills) generating 60-135L BDT monthly revenue (Shop: 30-50L, Mobile Recharge: 21-25L, Utility Bills: 10-30L) serving 10-15K MAU.
• Led architecture for AI-powered travel assistant using FastAPI and LangGraph multi-agent system, integrating flight search and visa APIs for intelligent travel planning and conversational booking assistance.
• Designed dynamic coupon engine supporting multi-brand bookings with complex rule validation, enabling 100% of platform transactions with inclusive/exclusive rules and service-specific discounts.
• Spearheaded integration of Visa Services (B2B), Travel Insurance, and secure Virtual Card Management System, expanding B2B service offerings and enabling seamless international travel services.
• Manage relationships with 5+ international API vendors (RateHawk, GRNConnect, etc.), ensuring secure, performant, and compliant integrations with sub-30s response times.
• Contributed to public API documentation and maintained code quality across hotel and lifestyle backend systems.

Collaborated with Talvette to build a robust backend system for their recruitment platform.

• Designed and implemented REST APIs for candidate management, job posting workflows, and company profiles.
• Developed an intelligent algorithm to match job posts with the most suitable candidates based on skills, experience, and preferences.
• Implemented advanced filter functionalities for candidate profiles, enabling precise talent searches.
• Integrated secure authentication workflows and role-based access control to ensure data privacy.
• Streamlined data handling by optimizing API response times and database queries for improved performance.
• Created comprehensive API documentation for seamless integration with frontend and third-party applications.

Delivered 5 production systems for multiple clients at mPower, managing concurrent projects across humanitarian, agricultural, and financial sectors. Demonstrated ability to context-switch between domains while maintaining code quality and delivery timelines.

• BHALO: Designed agricultural ERP for stock management and distribution tracking system using Node.js/PostgreSQL with JSON API standard, deployed in field for live use.
• IOM-Gazientep: Built humanitarian crisis response platform with QR-based relief tracking, beneficiary management, and analytics dashboards (Django/React/PostgreSQL).
• FAO-MRV: Developed surveying platform and analytics dashboard for FAO's carbon emissions monitoring program, enabling survey collection and real-time insights (Django/PostgreSQL).
• JANO: Built multi-format content management system supporting text, image, video, audio, and PDF content for Care Bangladesh's nutritional information platform (Django/PostgreSQL).
• Muzzle Recognition: Developed cattle insurance application with image recognition for farmer insurance claims, deployed in 3 live instances (Node.js/PostgreSQL).

Designed backend systems for comprehensive SME business management platform using Django/Python, building features across contract management, inventory, e-invoicing, cash planning, trend analytics, and accounts management.

• Architected backend systems supporting multiple core modules (contract management, inventory, e-invoicing, cash planning, trend analytics, accounts management) using Django/Python/PostgreSQL.
• Implemented quality assurance and data protection processes ensuring data integrity across financial and operational modules.

Built custom CMS backend for Independent Apparels portfolio website with user authorization and file upload system supporting images, videos, and PDFs (Python/Django).