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Petrescu SilviuPS
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Petrescu Silviu

@petrescusilviu

Senior Software Engineer at Microsoft who developed Native Authentication for MSAL and Microsoft Entra External ID.

Ireland
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At Microsoft, I developed Native Authentication capabilities for the Microsoft Authentication Library (MSAL), enabling developers to integrate Microsoft Entra External ID authentication into native mobile applications. I took primary ownership of the core iOS implementation for MSAL Native Auth v2 in Swift and Objective-C, and also developed Android SDK functionality in Kotlin.

At Hertz, I developed and enhanced the iOS rental application for the US and Canadian markets, including UX improvements that contributed to increased rentals and customer retention. I also extended internal frameworks for reuse across Hertz, Dollar, and Thrifty applications.

At Tata Consultancy Services, I delivered business-critical iOS applications for ESB, including a time-management solution integrated with enterprise payroll systems. I also developed interfaces and networking functionality for communication systems used by field technicians.

As a freelance iOS and backend developer, I designed, developed, and published mobile applications for clients including Fancamp, MyGovernmentOnline, Rexasoft, Toy Adventure, and Plummet. In my CTO roles, I developed mobile apps, games, and backend systems, including interconnected trivia products at 5About.

Experience

Work history, roles, and key accomplishments

SE

Freelance iOS & Backend Developer

Self Employed

Jun 2008 - May 2019 (10 years 11 months)

Independently designed, developed, and published mobile apps for various clients, managing full lifecycle. Architected multi-server backends and implemented analytics and monetization systems.

GA

Chief Technical Officer, App Designer

GameMatch

May 2013 - Mar 2015 (1 year 10 months)

Architected and developed a scalable iOS app and distributed backend infrastructure. Designed custom UI/UX and optimized memory management for iOS devices.

RE

Chief Technical Officer

Re-Create Entertainment

Jun 2008 - Apr 2013 (4 years 10 months)

Developed iOS games with custom multitouch gesture recognition and optimized memory management. Engineered automated testing systems and server-side security for in-app purchases.

Education

Degrees, certifications, and relevant coursework

Faculty of Automatics, University of Craiova logoFC

Faculty of Automatics, University of Craiova

No degree (incomplete), Computer Science and Information Technology

2002 - 2004

Completed two years of coursework in Computer Science and Information Technology, including Object-Oriented Programming.

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