Ivan Zelenkov
Software Engineer at Booking.com
Amsterdam, North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolIvan Zelenkov is a software engineer with 8 years of experience building scalable backend systems and optimizing performance across Node.js, Java, PostgreSQL, and AWS. He has shipped production services at startups and enterprise environments, from prototyping a web3 messenger that reached 70k MAU to developing a notification platform for 5M+ accounts. At Tiggy he drove cost-saving integrations, automated operational workflows, and achieved 100% API regression coverage; at Dialect Labs he architected non-blocking integrations with multiple third parties. He balances hands-on implementation with team leadership—mentoring engineers, running planning sessions, and serving as a Scrum master when needed. Based in Amsterdam, he also teaches Java at ITMO University, reflecting a commitment to knowledge transfer and clean design. Colleagues describe him as a pragmatic problem-solver who turns complex requirements into reliable, production-ready systems.
8 years of coding experience
5 years of employment as a software developer
Bachelor's degree Programming and Internet Technologies, Bachelor's degree Programming and Internet Technologies at ITMO University
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (11)
java6
algorithm6
heap6
heapsort6
sorting6
android-library1
background-service1
adb1
android-studio1
android1
kotlin1
Programming languages (3)
Github contributions (5)
microservices-course-itmo/saga
Oct 2019 - Jul 2020
Contributions:41 commits, 12 PRs, 40 pushes in 8 months
Anglopol/aviasales-demo-frontend
Feb 2018 - Mar 2018
Contributions:3 PRs, 21 pushes, 4 branches in 1 month
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