Judith Massa
Data Scientist
Heidelberg, 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.
6 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
A fast, immutable, distributed & compositional 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.
datahikedata-managementdurabledatabaseclojure
replikativ/datahike-benchmark
Jul 2020 - Sep 2021
Creation of statistics and visualizations of datahike performance
Contributions:25 commits, 1 PR, 39 pushes in 1 year 2 months
datahikestatisticsperformancevisualizationsdata-visualization
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