Kaloian Manassiev
Senior Lead Engineer at MongoDB
Barcelona, Catalonia, Spain
Summary
🤩
Rockstar🎓
Top SchoolKaloian Manassiev is a Senior Lead Engineer based in Barcelona with 12 years of experience building distributed systems and scalable backend platforms. He has a long tenure at MongoDB, progressing from Staff to Lead to Senior Lead Engineer since 2014, where he drives architecture and delivery for high-throughput data services. Earlier roles at AWS and Microsoft sharpened his systems and cloud engineering expertise, and his academic background includes an MSc from the University of Toronto and a BSc from Sofia University. Colleagues know him for combining deep technical ownership with pragmatic leadership—mentoring teams while still contributing hands-on to complex system design. He frequently operates at the intersection of reliability, performance, and developer experience, focusing on production-grade solutions rather than experimental prototypes. Fluent in navigating large-codebase evolution, he brings a steady track record of shipping durable, maintainable distributed software.
12 years of coding experience
17 years of employment as a software developer
BSc, BSc at Sofia University St. Kliment OhridskiMSc, MSc at University of Toronto
English, Bulgarian, Spanish, Russian
Github Skills (42)
database10
nosql10
atlas10
mongodb-database10
mongodb-driver10
mongodb10
vscode-extension9
c-extension9
react8
python8
android8
typescript8
react-native7
javascript7
ios7
Programming languages (4)
Github contributions (5)
kaloianm/rural-pipe
Oct 2020 - Nov 2022
Contributions:97 pushes, 1 branch, 1 issue in 2 years 1 month
kaloianm/workscripts
Dec 2017 - Jun 2022
Miscellaneous scripts to improve my MongoDB work productivity
Contributions:8 reviews, 237 commits, 10 PRs in 4 years 7 months
pythonmiscellaneousproductivitymiscellaneous-scriptsmongodb
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