Seppo Pirttiniemi
Software Architect at Alstom
Finland
Summary
👤
Senior🎓
Top SchoolSeppo Pirttiniemi is a seasoned software architect with over 10 years of experience designing and delivering complex, mission-critical systems across transport, case management, and real-time control domains. He blends hands-on development (C/C++/C#/Java/PHP/Python) with system-level architecture, having led integrations and feature design for Ecolane DRT, Bombardier/Alstom signalling projects, and regulated Finnish case management systems. Comfortable both as a solo contributor and team lead, he frequently bridges product owners and engineering teams to turn ambiguous requirements into robust implementations. His open-source contributions to pySTEPS demonstrate applied signal-processing expertise for weather nowcasting and practical data-import robustness (ODIM HDF5, non-finite handling). Based in Finland and grounded in a University of Helsinki CS background, he’s notable for quickly assimilating new languages and finding creative, pragmatic solutions in production environments.
10 years of coding experience
26 years of employment as a software developer
Computer Science, Computer Science at University of Helsinki
Finnish, English, Swedish
Github Skills (12)
fourier-transform10
fftw10
data-handling10
numerical-analysis10
fft10
f10
python10
frequency-analysis10
signal-processing10
numpy9
scientific-computing8
openmp3
Programming languages (3)
Github contributions (5)
pySTEPS/pySTEPS
Jun 2018 - Jun 2018
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 pushes, 1 branch in 1 day
Contributions summary:Seppo's contributions primarily focused on enhancing the `noise` module of the `pysteps/pysteps` repository, which involves implementing a Python framework for short-term ensemble prediction systems. They implemented several functions related to Fourier-based noise generation and spectral analysis, including `initialize_param_2d_fft_filter` and `generate_noise_2d_fft_filter`. The changes suggest the user has a strong understanding of signal processing and its application to precipitation nowcasting.
pulkkins/Optflow
Feb 2016 - Jul 2018
C++/Python implementations of optical flow algorithms
Contributions:19 commits, 2 PRs, 17 pushes in 2 years 5 months
implementationsoptical-flowpythonoptical
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