Leho Kraav - Chief Technology Officer at CXL

Leho Kraav

Chief Technology Officer at CXL

Austin, Texas, United States

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Summary

🤩

Rockstar

🎓

Top School

Leho Kraav is a seasoned technology leader and entrepreneur with 16+ years building e-learning, conversion optimization, and CX companies as CTO and partner at Wynter, CXL, and Speero. Based in Austin, he blends hands-on engineering, product messaging optimization, and growth experiments to help enterprises scale revenue through better customer experiences. His background spans system-level work (improving dracut initramfs handling of encrypted loop devices) to stabilizing large PHP/WordPress ecosystems like Sensei LMS, showing comfort from DevOps to backend integrations. Leho pairs academic training in computer science and informatics with practical product instincts, having shipped robust platforms for marketers and enterprise teams. He’s equally fluent in running technical teams and contributing code, and he often surfaces non-obvious gains by focusing on messaging and experiment-driven optimization.

16 years of coding experience

2 years of employment as a software developer

BSc, Computer Science, BSc, Computer Science at Southern Polytechnic State University

Tallinna Reaalkool

MSc, Informatics, MSc, Informatics at TalTech – Tallinn University of Technology

BSc, Computer Science, BSc, Computer Science at Kent State University

Russian, Finnish, Estonian

Stackoverflow

Stats

2,716reputation

816kreached

34answers

15questions

Badges

git

top-5%

Github Skills (27)

initrd10

sens10

wordpress10

initramfs10

bash10

lms10

php10

wordpress-plugin10

develop9

git9

boot9

script9

shell8

sh8

javascript8

Programming languages (33)

CMakefileAsciiDocGoMustacheHTMLJupyter NotebookTypeScript

Github contributions (5)

Automattic/sensei

May 2016 - Oct 2018

Sensei LMS - Online Courses, Quizzes, & Learning

Role in this project:

Back-end Developer

Contributions:1 review, 5 commits, 9 PRs in 2 years 6 months

Contributions summary:Leho primarily focused on resolving bugs and improving the backend functionality of the Sensei LMS plugin. They addressed issues related to PHP notices, specifically checking `is_main_query()` before conditionals to prevent errors. The user also tackled compatibility issues, including fixing WooCommerce Select2 compatibility and correcting WC Subscriptions integration comments. These contributions reflect a focus on code stability, integration with other WordPress plugins, and overall system maintainability.

wordpressphpsenseisensei-lmsplugin

dracutdevs/dracut

Aug 2011 - Jul 2012

dracut the event driven initramfs infrastructure

Role in this project:

Back-end & DevOps Engineer

Contributions:6 commits in 11 months

Contributions summary:Leho focused on enhancing the dracut initramfs infrastructure, specifically improving the handling of encrypted loop devices. They implemented functionality to recognize and decrypt keys within encrypted loop containers (.img files). The user also refactored code related to keydev mounting and implemented a cleanup strategy using the initqueue. These changes involved scripting within the dracut modules, demonstrating expertise in system-level configuration.

bootdracutinfrastructureinitramfsevent-driven

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