Nikita Smolenskii is a Staff Software Engineer based in Berlin with 11 years of experience delivering scalable, cloud-native systems across e‑commerce, fintech, HR, and health tech. He combines hands-on backend craftsmanship—evidenced by contributions to the popular zalando/logbook HTTP logging library—with pragmatic technical leadership, having led teams, CI and architecture improvements at companies like Wayfair, N26, SAP and Personio. Nikita excels at refactoring legacy systems, reducing latency, and driving migrations (on‑prem to cloud and monolith to microservices) while championing observability, SLOs and Monitoring-as-Code. Comfortable in both individual contributor and people-manager roles, he repeatedly cuts friction in delivery pipelines and operational costs. Notably, he has improved build pipelines from 20 to 6 minutes and hardened logging components against XXE vulnerabilities, reflecting a mix of productivity and security-minded engineering.
10 years of coding experience
14 years of employment as a software developer
University Diploma Computer Science, University Diploma Computer Science at Yaroslavl Demidov State University
An extensible Java library for HTTP request and response logging
Role in this project:
Back-end Developer
Contributions:18 commits, 5 PRs, 21 comments in 1 month
Contributions summary:Nikita primarily contributed to the core logic of the logbook library. Their work involved fixing bugs, such as handling empty JSON properties in body filters, and refactoring method signatures based on code review feedback. They also added new functionalities by implementing compacting body filters for JSON and XML, improving the efficiency of logging. Furthermore, the user configured the `DocumentBuilderFactory` to prevent XXE vulnerabilities and refined various filters, like form-url-encoded and access token filter.
Contributions:4 releases, 368 pushes, 6 branches in 1 month
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Nikita Smolenskii - Staff Software Engineer at Kadmos