Judith Massa
Data Scientist
Mannheim, Baden-Württemberg, Germany
Summary
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Rockstar🎓
Top SchoolJudith Massa is a Data Scientist with six years of experience applying software engineering discipline to data-intensive and parallel computing problems from Heidelberg, Germany. At lambdaforge she blends back-end development and data science, focusing on performance, refactoring, and migration work that keeps production systems robust and maintainable. Her open-source contributions include meaningful refactors and benchmarking utilities for the Clojure-based Datahike Datalog engine, showing a practical interest in immutable, distributed data systems. Trained in applied computer science at Ruprecht-Karls-Universität Heidelberg, she pairs academic foundations with hands-on engineering to move complex prototypes into reliable tooling. Colleagues describe her as a developer who prefers pragmatic, measurable improvements—optimizing for clarity and performance rather than flashy rewrites.
7 years of coding experience
Angewandte Informatik, Angewandte Informatik at Ruprecht-Karls-Universität Heidelberg
Github Skills (11)
clojure10
databases10
datalog10
relational-databases10
clojure-cli10
sql-database10
database10
testing9
performance-measurement8
open-source7
clojurescript3
Programming languages (4)
Github contributions (5)
replikativ/datahike
Nov 2019 - Jan 2023
Versioned, fast, distributed Datalog engine for everyone.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:227 reviews, 186 commits, 113 PRs in 3 years 2 months
Contributions summary:Judith primarily focused on refactoring and modifying existing code within the Clojure-based Datalog engine. Their contributions include removing test files related to database interaction and serialization, as well as reintroducing and updating a migration namespace and its associated test. They also made adjustments to example code and added a benchmark utility for performance measurement.
datalogdatahikedatabaseclojure
lambdaforge/mental-model
Jul 2019 - Aug 2020
Research tool to communicate with illiterate people by drawing diagrams.
Contributions:111 commits, 10 PRs, 88 pushes in 1 year 1 month
diagramsdrawing-diagramscommunicatedrawingresearch-tool
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