Valentin Tolmer
Software Engineer at Headlands Technologies LLC
Amsterdam, North Holland, Netherlands
Summary
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Rockstar🎓
Top SchoolValentin Tolmer is a seasoned software engineer with 13 years of experience building production-grade systems and machine learning tooling, currently working at Headlands Technologies after a multi-year tenure on Google Assistant. He combines deep ML expertise—evidenced by contributions to the widely used Caffe deep learning framework—with pragmatic backend engineering work on projects like a lightweight LDAP implementation and the SeaQL query builder. Comfortable across languages from Python and OCaml to Rust-friendly ecosystems, Valentin pairs research-rooted rigor (EPITA and academic automata work) with hands-on production delivery. A self-hosting hobbyist and “software craftsman,” he often focuses on API quality, test coverage and portability—small details that pay off at scale. Based in Amsterdam, he brings a blend of applied ML, systems thinking and open-source impact to complex engineering problems.
13 years of coding experience
8 years of employment as a software developer
Engineer’s Degree, Computer Science -- Machine Learning and Image Processing, Engineer’s Degree, Computer Science -- Machine Learning and Image Processing at EPITA: Ingénierie InformatiqueMaths, Physics and Engineering Science -- Classes préparatoires MPSI, Passage en MP*, Maths, Physics and Engineering Science -- Classes préparatoires MPSI, Passage en MP* at Lycée Pierre de Fermat - Toulouse
English, Spanish
Stackoverflow
160reputation
1kreached
5answers
2questions
Github Skills (38)
unit-testing10
ldap10
caffe10
sqlite10
python10
back-end-development10
user-authentication10
authentication10
machine-learning10
deeplearning-ai10
deep-learning10
sql10
rust10
backend10
testing9
Programming languages (22)
Github contributions (5)
lldap/lldap
Mar 2021 - Nov 2021
Light LDAP implementation
Role in this project:
Back-end Developer
Back-end DeveloperContributions:10 releases, 746 reviews, 83 commits in 8 months
Contributions summary:Valentin implemented core backend features for the lldap project. They focused on user listing with filtering capabilities and added comprehensive tests for the bind functionality. The user also refactored the database interaction and introduced support for group management, demonstrating a focus on building a robust and functional LDAP implementation. Furthermore, the user added support for creating and managing groups.
lightrustsecurityauthenticationweb-assembly
SeaQL/sea-query
Apr 2021 - May 2021
🔱 A dynamic SQL query builder for MySQL, Postgres and SQLite
Role in this project:Back-end Developer
Back-end DeveloperContributions:30 reviews, 11 commits, 12 PRs in 1 month
Contributions summary:Valentin contributed to the `sea-query` project by implementing traits related to query and schema building. They added functionality to wrap datetime values with quotes for SQLite compatibility. The user also implemented the `OrderedStatement` and `ConditionalStatement` traits for the query builder, enhancing the capabilities of the query construction process.
dynamic-sqlsqlite3sqlitedatabasepostgres
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