Sergei Aleksandrov
Senior Software Engineer at Deblock
Barcelona, Catalonia, Spain
Summary
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Senior🎓
Top SchoolSergei Aleksandrov is a Senior Software Engineer with 10+ years building high‑throughput, low‑latency backend systems, currently based in Barcelona. He specializes in event-driven microservices and real-time risk decisioning, with deep fintech domain expertise and three years focused on Financial Crime Prevention. At N26 he architected ML-driven authorization and behavior-analytics pipelines that cut card fraud by ~30% and reduced false positives by 56%, translating to multimillion‑euro savings. Sergei owns projects end-to-end—from RFC and architecture to rollout and long‑term maintenance—and has a track record of operationalizing stream processing (Apache Flink) and cache optimizations to materially improve latency and reliability. Earlier roles at Renaissance Capital and Netcracker demonstrate his ability to automate complex back‑office processes and lead cross‑border teams, mentoring engineers as he scaled systems. He pairs a rigorous MIPT academic background in networks and applied math with a pragmatic focus on measurable business impact.
10 years of coding experience
12 years of employment as a software developer
Master's degree, Information Systems and Computer Networks, Master's degree, Information Systems and Computer Networks at Moscow Institute of Physics and Technology (State University) (MIPT)
English, Russian, Spanish
Github Skills (5)
iot-application3
tracks3
java3
google-home2
arp1
Programming languages (2)
Github contributions (5)
seriyalexandrov/spring-boot-angular-sse
Sep 2017 - Oct 2018
Contributions:6 commits, 4 pushes, 1 branch in 1 year
seriyalexandrov/Education-Center
Sep 2016 - Sep 2019
Some stuff for education center
Contributions:8 PRs, 50 pushes, 5 branches in 3 years
center
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