Kayes Fahim

Lead Software Engineer

IRU - Luxury Travel • Freelance

Feb 2024 - Dec 2024 • 10 mos

Serving as the Lead OTA Architect for a travel agency based in Denmark, responsible for designing and developing B2C travel booking platforms tailored for the European market. Led the architecture and development of modern OTA solutions integrating flight consolidators such as Duffel and multiple NDC airline connections, enabling direct airline content and competitive pricing for customers. Key Responsibilities & Achievements Leading the overall OTA architecture and technical strategy for B2C travel products targeting the European market. Designing scalable flight search and booking systems integrated with Duffel API and several NDC airline providers. Developing a modern B2C booking experience optimized for performance, usability, and high search volumes. Creating unified API structures and data models to manage multiple airline content sources. Optimizing flight search, pricing, and booking workflows to improve speed and accuracy. Supporting the integration of ancillary services and airline add-ons through NDC capabilities. Impact Delivered a modern, scalable OTA platform that connects European travelers with airline content through consolidators and NDC integrations, improving booking efficiency and user experience.

Chief Technical Officer

Fly Far International • Full time

Oct 2023 - Aug 2024 • 10 mos

During this period, I recruited and built a high-performing engineering team of 15+ developers, leading the design, architecture, and delivery of scalable Online Travel Agency (OTA) platforms for global travel businesses. I architected and developed multiple travel marketplace solutions including B2B, B2C, B2B2B, B2B2C, and White-Label OTA platforms, enabling travel agencies and partners to access unified booking infrastructure. Key Responsibilities & Achievements Led a 15+ developer engineering team, managing system architecture, development workflows, and technical direction. Designed and implemented high-performance OTA architectures for scalable global travel distribution. Built multi-supplier aggregation layers integrating several flight suppliers including: Sabre, Amadeus, Duffel, Travelport, Travelomatrix, Mystifly, Tripjack, and Kiwi.com. Integrated hotel supplier APIs including: Sabre Hotels (CLS), RateHawk, and WebBeds. Developed unified booking and search engines to normalize multiple supplier responses into a single platform. Integrated multiple payment gateways and financial APIs to support global transactions. Designed microservice-based architecture supporting search, booking, ticketing, payments, and order management. Built scalable OTA systems supporting multi-agency distribution, white-label platforms, and marketplace models. Impact Delivered robust travel technology platforms enabling agencies and partners to search, compare, and book flights and hotels across multiple suppliers within a unified system.

Solutions Architect

Global Travel and Tours • Full time

Sep 2023 - Feb 2024 • 5 mos

Leading a development team responsible for building a next-generation Online Travel Agency (OTA) platform integrated with Sabre GDS API to support scalable flight booking and travel distribution. I designed the core data architecture and API model, enabling efficient communication between supplier APIs and the OTA platform while ensuring high performance and scalability. Key Responsibilities & Contributions Leading the engineering team in developing a modern OTA platform powered by Sabre GDS integration. Designed and implemented the data structures and unified API model for efficient flight search, pricing, and booking. Worked with NDC integrations from multiple airlines, enabling direct airline content distribution. Developed several business models and marketplace strategies to support B2C travel platforms. Optimized flight search performance to handle large-scale requests and reduce response time. Designed and implemented support for ancillary services such as baggage, seats, and other airline add-ons. Architected the OTA system to introduce a modern and scalable B2C marketplace experience for travelers. Impact Delivered a high-performance OTA platform architecture that improves flight search efficiency, supports NDC airline integrations, and enhances the travel booking experience for B2C customers.