Marcin Lewandowski
Owner at CodeSpace
Toruń, Kuyavian-Pomeranian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolMarcin Lewandowski is a seasoned software engineer and owner with 13 years of experience building and leading full-stack teams, known for hands-on contributions to the RavenDB open-source ACID document database and its modernized Studio UI. He has driven front-end modernization efforts—migrating legacy interfaces to React/Redux, introducing testing and design systems—and led cross-functional teams that delivered SaaS, client libraries, and observability tooling across AWS, Azure, and GCP. Equally comfortable in JavaScript, Java, and SQL, Marcin blends product-focused engineering with data-driven decisions, having designed Data Lakes, warehouses, and BI reports used across sales and support. Notable accomplishments include optimizing Node.js client parsing performance, creating an interactive indexing performance advisor, and contributing to high-profile RavenDB features and UI enhancements. Based in Toruń, Poland, he pairs deep technical curiosity with practical leadership, mentoring engineers and recruiting teams that consistently receive positive client feedback.
13 years of coding experience
10 years of employment as a software developer
Master's degree, Computer Science, 5 (EU) / A (US), Master's degree, Computer Science, 5 (EU) / A (US) at Uniwersytet Mikołaja Kopernika w Toruniu
Polish, English, Spanish
Github Skills (11)
uid10
typescript10
javascript10
typescripts10
front-end-development10
react10
typescript-types10
ui-design9
json9
user-interface8
interface-design8
Programming languages (10)
Github contributions (5)
ravendb/ravendb
Apr 2013 - Jan 2023
ACID Document Database
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:2167 reviews, 3865 commits, 1982 PRs in 9 years 10 months
Contributions summary:Marcin primarily focused on the front-end aspects of the RavenDB Studio, making modifications to UI components and views. Their work involved bug fixes and feature implementations, such as adding a button to test the index and extending the existing UI for database-specific functionalities. The user also contributed to enhancing the UI, making minor visual adjustments to various views to improve user experience and usability.
nosqlravendbnosql-data-storagenosql-databasesc-sharp
ravendb/ravendb-jvm-client
Apr 2013 - Dec 2022
RavenDB JVM Client
Contributions:1 review, 1098 commits, 127 PRs in 9 years 9 months
client-jvmravendbjvmjavajdbc
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