Julien Esseiva
Software Engineer at Berkeley Lab
Berkeley, California, United States
Summary
👤
Senior🎓
Top SchoolJulien Esseiva is a software engineer based in Berkeley, CA with 11 years of experience specializing in high-performance and scientific computing. He currently develops HPC-focused solutions at Berkeley Lab, building on earlier research and student roles there that involved scheduling HEP applications on large HPC systems like NERSC-Cori. His background blends applied computer science (MS) with practical engineering training from Swiss institutions and civil service roles that grounded him in reproducible, production-ready workflows. Julien has a track record of collaborating across research labs and academic teams, translating complex compute requirements into efficient scheduling and resource solutions. Comfortable both in research environments and lab-scale operations, he brings a pragmatic emphasis on performance, reliability, and portability. Colleagues can expect an engineer who pairs rigorous academic foundations with hands-on HPC deployment experience.
11 years of coding experience
Master of Science - MS, Computer Science, Master of Science - MS, Computer Science at HES-SO Haute école spécialisée de Suisse occidentaleBachelor of Science - BS, Bachelor of Science - BS at College of Engineering and Architecture of FribourgSwiss Technical Maturity, COMPUTER AND INFORMATION SCIENCES AND SUPPORT SERVICES, Swiss Technical Maturity, COMPUTER AND INFORMATION SCIENCES AND SUPPORT SERVICES at Ecole des Métiers de Fribourg
French, English, German
Github Skills (23)
simulation10
computational-physics10
transport10
energy10
high-energy-physics10
detectors10
hip10
physics10
gpu10
cuda10
monte-carlo10
pixel9
raycasting9
high-performance9
cross-platform7
Programming languages (4)
Github contributions (5)
esseivaju/celeritas
Oct 2022 - Mar 2025
Celeritas is a new Monte Carlo transport code designed for high-performance simulation of high-energy physics detectors.
Contributions:18 PRs, 737 pushes, 181 branches in 2 years 5 months
physicssimulationhigh-energy-physicsdetectorsmonte-carlo
esseivaju/pixeltrack-standalone
Jul 2022 - Feb 2023
Standalone Patatrack pixel tracking
Contributions:75 pushes, 16 branches in 7 months
trackingpixelstandalone
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