SYED IRFAN
Senior Software Engineer @ Booking.com
Backend, Web, and Mobile Developer with a track record of delivering highly scalable and complex projects. With over 11 years of professional experience, I'm adept in strategic product development and working with high-performing, multinational teams. Technology excites me because of the positive influence it has on business transformation and process optimisation.
About
What I bring
Backend, Web, and Mobile Developer with a track record of delivering highly scalable and complex projects. With over 11 years of professional experience, I'm adept in strategic product development and working with high-performing, multinational teams. Technology excites me because of the positive influence it has on business transformation and process optimisation.
11+
Years experience
€10M+
Annual revenue impact
$75K
Yearly cost reduced
Selected impact
- Migrated an organization's database from Oracle to Alibaba Cloud PostgreSQL, reducing operating cost by ~$75,000/year.
- Designed and developed a fraud detection system for e-commerce replacing "One Sentry", estimated to save MYR 15,000/quarter.
- Designed and developed mobile banking REST APIs from scratch for a leading bank in Malaysia.
- Implemented Malaysian e-banking features: DuitNow transfer, FD placement, Mobile reload, Bill payment, Split bill, Request to Pay (RTP/RPP), Zakat fitrah, e-Angpao, Adaptive authentication (RSA).
Key competencies
- Backend Development (Java — Monolithic & Microservices)
- REST API Development (Spring Boot)
- Mobile Development (React Native)
- Web Development (React.js, Redux)
- Distributed System Design (Real-time, EDD)
Career
Experience
Senior Software Engineer
Sep 2021 - PresentBooking.com · Amsterdam
- Built a highly scalable system powering cross-platform recommendations, increasing revenue by more than €10 million annually.
- Currently building a unified trip platform leveraging agentic GenAI to help customers plan their trip / itinerary.
- Contributed to the Accommodation unit, modernising the app's home screen.
- Created new highly efficient and scalable backend services serving thousands of requests per second.
Technical Lead
April 2020 - Sep 2021Maybank · Kuala Lumpur, Malaysia
- Led technical delivery for digital banking initiatives.
Full Stack Developer
Jun 2019 - Apr 2020PrestoMall · Kuala Lumpur, Malaysia
- Developed fraud detection and e-commerce platform features.
Java Backend Developer
Jan 2018 - Jun 2019Hong Leong Bank Berhad · Kuala Lumpur, Malaysia
- Built and maintained Java backend services for banking systems.
Java Developer
Jun 2015 - Jan 2018Tata Consultancy Services · Bengaluru, India
- Developed enterprise Java applications for global clients.
Toolkit
Skills & credentials
Certifications
- Oracle Certified Professional, Java SE 8 Programmer I (OCP)
- Algorithms and Data Structures — Algorithms Expert
Education
Malnad College of Engineering
Bachelor's degree, Electrical, Electronics and Communications Engineering
2011 - 2015
Contact
Let's build something great
Reach out to find out how I might consult, contribute and add value to your organization.
irfansyed33@gmail.com+31 XXXX68895 / +91 7756071230
Amsterdam, North Holland, Netherlands
© 2026 Syed Irfan. All rights reserved.