Petr Levtonov
Head Of Backend Engineering at KIEFER
Vienna, Austria
Summary
🤩
Rockstar🎓
Top SchoolPetr Levtonov is a Head of Backend Engineering with 11 years of experience building high-throughput, resilient systems in telecom and fintech, most recently leading backend strategy at Bitpanda and now at KIEFER. He blends hands-on backend expertise in PHP, Java, and Go with strong database and distributed architecture design, having driven platform re-architectures and formalised ADR and observability practices. Petr pioneered AI-augmented engineering workflows and agent-based development at company scale, increasing delivery velocity while preserving reliability in regulated environments. An active open-source contributor, he improved concurrency control in the php-lock library and enhanced Redis/MySQL integrations in Laravel, showing a knack for pragmatic improvements to critical infrastructure. Based in Vienna, he pairs practical coding and test automation skills with mentorship and cross-team governance to raise long-term engineering quality.
11 years of coding experience
16 years of employment as a software developer
Vienna University of TechnologyMatura, Information Technology, Matura, Information Technology at Technologisches Gewerbemuseum
Stackoverflow
41reputation
13kreached
2answers
0questions
Github Skills (26)
caching10
redis10
mutex10
laravel-mix10
testing10
locking10
laravel10
phpunit10
php10
exception-handling10
locks10
disk-cache10
semaphore10
object-cache10
memory-cache10
Programming languages (4)
Github contributions (5)
php-lock/lock
May 2018 - Apr 2019
Popular PHP library for serialized execution of critical code in concurrent situations
Role in this project:
Back-end Developer & QA Engineer / Test Automation Engineer
Back-end Developer & QA Engineer / Test Automation EngineerContributions:2 reviews, 49 commits, 9 PRs in 11 months
Contributions summary:Petr primarily focused on enhancing the `SpinlockMutex` class within the PHP library. Their contributions involved adding a new exception (`ExecutionOutsideLockException`) to handle timeouts and code execution outside the lock, modifying the `SpinlockMutex` to utilize this exception, and updating related test cases to expect the new exception and verify its message. Further, they updated the test suite for PHPUnit namespaces.
semaphorelockphpmutexexecution
laravel/framework
Feb 2021 - Aug 2022
The Laravel Framework.
Role in this project:Backend Developer
Backend DeveloperContributions:21 reviews, 3 commits, 16 PRs in 1 year 5 months
Contributions summary:Petr primarily contributed to the Laravel framework, focusing on Redis cache and database interactions. Their work included adding support for phpredis serialization and compression within the cache component. They also implemented fixes related to rate limiting when phpredis serialization or compression is enabled, and modified the code to optimize MySQL database connections by removing an explicit "USE database" statement.
laravel-frameworklaravelphpframework
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