Sergi Bellido - Director Of Engineering at MongoDB

Sergi Bellido

Director Of Engineering at MongoDB

Barcelona, Catalonia, Spain

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Summary

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Senior

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Top School

Sergi Bellido is a Director of Engineering based in Barcelona with 14 years of experience building high-performance systems from HPC compilers to distributed databases. He rose through technical ranks at MongoDB—contributing deep fixes and optimizations to core internals like session management, migration, and config.chunks handling—before moving into leadership roles guiding engineering teams. His background in HPC and compilers (Mercurium, OpenMP/OmpSs) gives him a rare combination of low-level performance expertise and systems architecture judgment. Sergi enjoys hands-on design and implementation, always weighing design principles against performance implications. He has applied GPU/CUDA and C++ skills to real-time sports automation and brings research-driven rigor to production systems. Colleagues describe him as a pragmatic engineer-leader who still dives into core code when it matters.

14 years of coding experience

12 years of employment as a software developer

UPC Universitat Politècnica de Catalunya

Catalan, Spanish, English

Github Skills (14)

databases10

c-language10

cpp10

cprogramming-language10

mongodb10

back-end-development10

database-design10

cplus10

nosql10

mongodb-database10

database10

database-administration9

data-structures8

data-structure8

Programming languages (2)

C++C

Github contributions (5)

mongodb/mongo

Sep 2020 - Dec 2022

The MongoDB Database

Role in this project:

Back-end Developer / Database Engineer

Contributions:182 commits, 1 comment in 2 years 2 months

Contributions summary:Sergi primarily contributed to the back-end logic and database aspects of the MongoDB database. Their work involved modifying core components, debugging, and fixing issues in areas such as session management, migration, and data versioning. Furthermore, the user demonstrated expertise in improving logging, handling complex versioning schemes, and implementing optimizations related to data handling in the config.chunks collection. The contributions show a deep understanding of MongoDB internals.

nosqlc-plus-plusmongodb-databasedatabasemongodb

SergiMateo/mcxx

Nov 2016 - Dec 2016

Contributions:4 pushes in 1 month

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