I am a Full Stack Software Engineer with over 17 years of experience building web products, user-facing experiences, and reliable software systems. I specialize in multi-disciplinary frontend architecture, scalable backend services, and rapid product development.
I thrive in customer-centric environments where fast iteration, continuous customer feedback, and quick MVP execution are essential. Over my career, I have repeatedly helped take products from initial concept to high-scale production.
Since joining Booking.com, I have worked across client-side and full-stack roles. Beyond core feature engineering, I was part of a team that helped bootstrap, evaluate, and launch several new business verticals.
Since late 2021, my primary focus has been on the flights product and search funnel. My work spans high-throughput backend services, search optimization, platform modernization, and production reliability. I enjoy connecting engineering depth with user needs to solve complex problems simply.
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2014 - Present Current
Senior Full Stack Software Engineer
Booking.comFocusing on the flights product and search funnel across backend services, search optimization, platform modernization, and product experimentation. Collaborated within cross-functional teams to bootstrap, evaluate, and launch new business verticals from initial MVP to production scale. Applying GenAI to enhance flight search clarity via multilingual summaries and offer highlights.
Flights Product GenAI New Verticals MVP & Fast Iteration Backend Services -
2011 - 2014
Senior Software Engineer
PubMaticLed product development using Agile methodology, managed front-end developers, established UI engineering standards, developed in-house UI frameworks, and drove web performance and security optimization.
UI Architecture Team Leadership Web Performance -
2010 - 2011
UX Developer
ZycusFocused on W3C-compliant front-end development, JavaScript, jQuery, and enterprise AJAX implementations.
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2008 - 2010
Software Developer
TechnocuzDeveloped desktop and web applications using .NET, PHP, MySQL, and SQL Server.
Self-Hosting & Homelab
Maintaining a local data center infrastructure orchestrated via Docker containers, reverse proxy routing, local DNS resolution, and secure WireGuard VPN tunnels.
Hardware Tinkering
Hands-on hardware experimentation writing custom C++ firmware for ESP32 and ESP8266 microcontrollers, building low power environmental sensor nodes and prototyping circuits.
Advanced Home Automation
Designing deeply integrated local automations using Home Assistant, robust Zigbee & Matter over Thread meshes, and custom hardware nodes focused on presence detection and environmental monitoring.
Latest posts from blog.rnazar.nl: homelab notes, self-hosting deep dives, and hardware tinkering.