Technologies: Java 8-21, C++, AWS services, Async Profiler, Amazon Profiler, JMH, JMX, JFR, JUnit, Gradle, Maven, internal Amazon tools.

• Led early-access customer engagement across 10 services, driving the product’s global availability at Amazon.
• Delivered core features of the Java runtime, enabling the upgrade of 4.5K services across more than 2.6MM hosts to run on the latest LTS JVM without code change.
• Unlocked the upgrade of core Amazon retail service handling 350MM+ requests per day, increasing TPS by 13-20%, decreasing CPU utilization by 10-30%, and latency by 15-25%, while reducing host count by up to 50%.
• Coached 2 junior engineers through pair programming and code review; created technical documentation improving onboarding for new members.
• Enhanced automated testing harness to enable running tests across 4 JDK versions.

Technologies: Java 11, Spring Boot, TypeScript, React, Oracle SQL, JDBC, JPA, Liquibase, Keycloak, Junit, Mockito, Docker.

• Delivered and maintained document handling service (processing 500K documents/year), recruitment systems, CERN phone book (1500+ unique daily visits);
• Automated HR and recruitment processes, handling 3,000+ registrations per year;
• Enhanced software quality and processes through agile practices, pair programming, refactoring etc;
• Mentored junior engineers and colleagues;

Technologies: C#, .NET, C++, TypeScript, WPF, Entity Framework, MEF, CEF (Chromium Embedded Framework)/CEFSharp, Microsoft Media Foundation, SharpDX, NUnit, NSubstitute.

• Developed Tobii Pro Lab - a world-leading eye-tracking software application.
• Delivered core features that enabled multiple market segments including early autism research, web UX research.
• Participated in and led decision-making processes related to software architecture, delivery strategy, and UX;
• Presented at the Develop Beyond 2019 eye-tracking/R&D conference in Stockholm, Sweden;

Technologies: C#, .NET, Java, WPF, Xamarin, VSTO, COM, Entity Framework, SQLite, MySQL, NUnit.

• Designed and delivered solutions including Outlook AddIns, desktop/mobile applications, data aggregation and security tools;

• Mentored and supported the mobile development team;