Denis Portnov
Software Engineer at Университет ИТМО
St Petersburg, St Petersburg City, Russia
Summary
👤
Senior🎓
Top SchoolDenis Portnov is a Go-focused software engineer with 14 years of professional experience and three years of targeted hands-on development in microservices, DDD and CQRS at companies like Ozon Tech and Istock.info. He has built and scaled high-throughput services (up to 60k rps in a service) and works regularly with Kafka, gRPC, PostgreSQL, Redis and observability tools such as Grafana and Graylog. As an instructor of algorithms and data structures at ITMO University, he brings strong fundamentals, testing discipline and a habit of designing clear, testable solutions—often creating lab assignments, tests and delivering lectures. He contributes to well-known open-source projects like Zend Framework, improving URI and cryptography components and adding test coverage for security-critical code. Denis combines product-awareness (feature lifecycle, QA principles) with practical team skills—pair programming, code review and running retrospectives—and is actively building towards a team lead role. An organiser of developer events and a proponent of networking, he pairs technical ownership with a collaborative, feedback-driven approach.
14 years of coding experience
2 years of employment as a software developer
Университет ИТМО
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (7)
unit-testing10
zend-framework10
php10
cryptography10
uri9
urn9
url-encoding9
Programming languages (2)
Github contributions (5)
zendframework/zendframework
Apr 2012 - Jul 2012
Official Zend Framework repository
Role in this project:
Back-end Developer
Back-end DeveloperContributions:108 commits in 3 months
Contributions summary:Denis primarily contributed to the Zend Framework's URI and cryptographic components. Their work included refactoring code for enhanced security, making code style fixes, and introducing improvements to URI handling, particularly with URL encoding and decoding. They also addressed bugs related to Diffie-Hellman and RSA implementations, including the introduction of test cases to ensure proper cryptographic functionality. The contributions demonstrate a focus on maintaining and improving core functionalities within the framework.
zendzend-frameworkphpframeworkmodular
denixport/dart-uuid
May 2018 - Mar 2021
UUID type for Dart. Provides parsing, formatting, generation and comparison of UUIDs as defined by RFC 4122
Contributions:2 releases, 107 commits, 1 PR in 2 years 10 months
rfc-4122uuid-generatoruidnanoiddefined
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