Ivan Kolosov
Lead Software Engineer at OZON.ru
Moscow, Moscow, Russia
Summary
👤
Senior🎓
Top SchoolIvan Kolosov is a Lead Software Engineer with 11 years of experience building high-reliability financial systems, currently driving card payments accounting and settlement features for Ozon Bank. He combines deep hands-on expertise in Go, Python and C++ with production-grade experience across PostgreSQL, MongoDB and bespoke NoSQL solutions to design microservices that manage money precisely at scale. At Yandex.Taxi he helped launch Billing 2.0 and expanded loyalty and billing infrastructure across multiple products, and he has repeatedly delivered fault-tolerant background-job frameworks and end-of-day reconciliation tooling required for banking-grade operations. Known for balancing technical depth with people leadership, he mentors engineers and leads small teams to ship resilient systems under heavy load. An analytical thinker trained in applied mathematics, he also brings a pragmatic focus on reducing operational risk through testing, soft-deletion patterns and load testing that have prevented system-wide failures.
11 years of coding experience
6 years of employment as a software developer
Lomonosov Moscow State University
English, Russian
Github Skills (51)
cpp9
database8
sql8
java8
textbook8
markdown7
clrs7
consistency7
cloud-native7
dbms7
sql-database7
endpoint7
data-structures6
oracle6
raft6
Programming languages (4)
Github contributions (5)
kolosovi/kohonen
Nov 2016 - Nov 2016
Contributions:42 commits, 7 pushes, 1 branch in 9 days
sergun/astro-mr
Oct 2015 - Dec 2016
Contributions:2 PRs, 23 pushes, 3 branches in 1 year 2 months
hadoop
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