Ruslan Peshchuk
Senior Backend Engineer at Circula
Offenbach am Main, Hesse, Germany
Summary
👤
Senior🎓
Top SchoolRuslan Peshchuk is a Senior Backend Engineer with 12 years of experience building high-performance, production-grade systems across fintech, manufacturing, and life-science domains. He specializes in Java/Kotlin, databases, AWS, and DevOps practices, and has a track record of measurable impact—e.g., cutting a 10M+ MongoDB-to-Elasticsearch indexing job from 16 hours to 1. He combines hands-on architecture and coding (CI/CD, Gradle, Docker, Spring/Ktor) with team-building and process improvements, having hired and onboarded engineers and introduced automated release pipelines and quality checks. Pragmatic and business-oriented, he focuses on performance, cost-efficiency, and developer experience while valuing transparency and concise communication. Based in Offenbach am Main, Germany, he contributes to open-source components used by his teams and documents technical decisions to support fundraising and long-term maintainability.
12 years of coding experience
16 years of employment as a software developer
Informatics Computer Techniques and Computer Technologies Information Technology, Informatics Computer Techniques and Computer Technologies Information Technology at ITMO University
English, Hebrew, Russian, German, Portuguese
Stackoverflow
11reputation
4kreached
3answers
0questions
Github Skills (56)
crossover10
testing9
continuous-integration9
aws9
apache-poi9
streaming8
python8
developer-tools8
reader8
api8
excel8
aws-lambda8
intellij-idea8
lambda8
json8
Programming languages (6)
Github contributions (5)
peshrus/crossover-interview-2019-written-evaluation
Jan 2019 - May 2020
Contributions:13 commits, 2 pushes, 1 branch in 1 year 4 months
peshrus/revolut-interview-backend-2019
Jan 2019 - May 2020
Contributions:10 commits, 8 pushes in 1 year 3 months
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