Sendil Nellaiyapen /ˈsɛn.dɪl ˌnɛl.aɪˈjɑː.pən/

Making sure Uber's infrastructure is reliable, scalable, and efficient.

Lead Uber’s Web Payments and Payment Selection organizations, scaling teams from 2 to 22+ engineers and Engineering Managers across critical payment journeys. Delivered initiatives driving 9-digit top-line impact, including Payment Preselection, Payment Switcher, Guest Checkout, and B2B Wallet expansion. Built the org structure, technical vision, and operating model, creating autonomous teams that consistently performed at 2× benchmarks. Drove engineering and talent impact across Amsterdam and EMEA, including platform modernization, 50+ intern hires, 40+ Bar Raisers, and multiple engineer and manager promotions.

Lead the Web Wallet and Payments Experience across Uber, combining Tech Lead and Full Stack Engineering responsibilities for a critical global payments surface. Architected and launched wallet.uber.com, now supporting five Uber Lines of Business, and led high-impact engineering initiatives including an award-winning Web Payments Fixit Week. Represent Uber Amsterdam across major industry events as Engineering Lead for Tech Events Amsterdam and contribute to Uber’s global engineering advocacy efforts.

Full-stack developer platform for developing and deploying Kotlin-based cloud applications.

Design and develop devops products.

Leading generator development, Kotlin platform support, and cloud-native integrations.

Architected cloud-native platforms and DevOps foundations for a leading airline, establishing cloud, CI/CD, TDD, automation, and well-architected practices that accelerated 5 applications from idea to production in 8 months. Drove cloud modernization, scalability, cost optimization, and engineering productivity while serving across architecture, technical consulting, product, and operational leadership roles. Built the engineering organization from 1 to 38 engineers, delivering high-quality products and creating new business opportunities for the company.

Architected and scaled mission-critical airline platforms supporting millions of annual transactions, delivering multi-million-dollar operational savings and measurable efficiency gains. Led modernization of core booking, search, and ticketing systems, replacing legacy workflows and improving both customer experience and operational performance. Established engineering standards, mentored 10 engineers, and influenced business growth through pre-sales contributions that helped secure four major tender wins.