Ivan Kalita
Staff Software Engineer at Grafana Labs
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolIvan Kalita is a Staff Software Engineer based in Berlin with 11 years building cloud-native, cost-efficient distributed systems and platform tooling across high-scale environments. He has led global infrastructure modernizations—most notably re-architecting a mission-critical dispatch service deployed in 50+ countries—delivering improved reliability and zero-downtime rollouts. Deeply hands-on with Go, Kubernetes and AWS, Ivan blends strong backend and DevOps expertise with a focus on observability and developer experience. He mentors engineers, drives cross-team collaboration, and has practical open-source contributions to notable projects like Bloomberg’s goldpinger and ReactPHP’s event loop, improving cluster debugging and event-loop performance. Not obvious from titles alone: he repeatedly tackles legacy cleanups and build-process fixes that unlock faster deployments and lower operational costs.
11 years of coding experience
10 years of employment as a software developer
Bachelor's degree Mathematics and Computer Science, Bachelor's degree Mathematics and Computer Science at Far East Federal University
Russian, English, Chinese, German
Stackoverflow
2,227reputation
237kreached
46answers
9questions
php
top-5%
Github Skills (23)
kubernetes10
docker10
reactphp10
dockers10
php10
go10
event-loop10
kubernetes-pods10
api-design9
testing9
libev9
cicd9
timers8
timer8
prometheus7
Programming languages (9)
Github contributions (5)
reactphp/event-loop
Apr 2017 - Apr 2018
ReactPHP's core reactor event loop that libraries can use for evented I/O.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 7 PRs, 27 comments in 1 year
Contributions summary:Ivan contributed to the core event loop functionality of the ReactPHP project. They implemented and tested a new event loop based on the PECL ev extension. The user also made improvements to the StreamSelectLoop, including addressing timeout rounding issues and adding tests for timer intervals. Their work focused on improving performance and adding features to the event loop implementation.
event-loopreactorphpstreamsloop
bloomberg/goldpinger
Dec 2018 - Dec 2018
Debugging tool for Kubernetes which tests and displays connectivity between nodes in the cluster.
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:7 commits, 3 PRs, 14 comments in 1 day
Contributions summary:Ivan primarily contributed to the project by implementing and fixing the healthz endpoint, ensuring the service's operational status could be verified. They also made changes to the build process, specifically addressing problems related to GOOS during the Docker build. Additionally, the user removed license headers from autogenerated files to streamline the codebase.
connectivitydebugging-tooldisplaysnodesdebugging
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