Juha Ruokolainen
Senior Application Specialist
Finland
Summary
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RockstarJuha Ruokolainen is a Senior Application Specialist at CSC – IT Center for Science with 11 years of professional software experience and a deep focus on scientific computing. He has contributed to the core of the respected Elmer FEM open-source project, refactoring critical backend modules, improving constraint handling, and adding mesh-based functionality and tests. Based in Finland, Juha blends practical engineering with attention to numerical correctness and long-term maintainability, often addressing subtle integration and naming conflicts in legacy code. His work shows a propensity for improving core libraries rather than superficial features, making him a go-to engineer for robust, low-level scientific software improvements.
11 years of coding experience
Github Skills (7)
fortran10
finite-element-analysis10
linear-algebra10
mesh9
mpi8
c117
c177
Programming languages (2)
Github contributions (2)
ElmerCSC/elmerfem
Feb 2015 - Mar 2022
Official git repository of Elmer FEM software
Role in this project:
Backend Developer
Backend DeveloperContributions:3 reviews, 257 commits, 36 PRs in 7 years 1 month
Contributions summary:Juha primarily worked on refactoring and improving the Elmer FEM software's core functionality, specifically within the `matc`, `fem`, and `modules` directories. They addressed potential conflicts by renaming functions, fixed several minor bugs in existing code, and implemented functionality like constraint handling, the integration of Lagrange coefficients and the creation of mesh-based code. The contributions also included adding new tests.
git-repositoryelectromagneticsmpifemacoustics
ElmerCSC/elmer-elmag
Mar 2023 - Mar 2023
Development repository for electromagnetics tutorial and verification cases
Contributions:3 PRs, 4 pushes, 7 comments in 3 days
caseselectromagneticsfiddletrellisverification
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