Joona Rissanen
Development Engineer at Coherent Inc.
Tampere, Pirkanmaa, Finland
Summary
👤
Senior🎓
Top SchoolJoona Rissanen is a development engineer with nine years of experience specializing in fiber lasers, optical amplifiers, and the software tools that model them. He combines hands-on laboratory skills—designing, assembling and testing high-power Yb-doped fiber amplifiers and narrow-linewidth CW lasers—with numerical simulation and measurement automation to iterate designs toward practical specifications. Joona has driven cost-optimized BOM decisions and supplier coordination across R&D roles at Coherent, Ampfocus, and Ampliconyx, and has a strong academic foundation (M.Sc. in Engineering Physics, top grades). He treats code as a way to encode real-world physics, building reusable programming projects that both accelerate his work and benefit other optics practitioners. Based in Tampere, Finland, he brings a rare blend of experimental rigor and computational modeling that shortens development cycles for complex photonics systems. As a detail-oriented problem solver, he often surfaces non-obvious practical improvements by translating theoretical models into testable hardware tweaks.
10 years of coding experience
8 years of employment as a software developer
Bachelor of Science (B.Sc.), Engineering Physics, GPA: 4.94 / 5, Bachelor of Science (B.Sc.), Engineering Physics, GPA: 4.94 / 5 at Tampere University of TechnologyMaster of Science (M.Sc.), Engineering Physics, GPA: 5/5, Master of Science (M.Sc.), Engineering Physics, GPA: 5/5 at Tampere UniversityErasmus+ student exchange, Laser Technology, Optics Design, German language, Erasmus+ student exchange, Laser Technology, Optics Design, German language at RWTH Aachen UniversityFinnish Matriculation Examination, Finnish Matriculation Examination at The Classical High School of Tampere
English, Finnish, German, Swedish
Github Skills (2)
physics10
python10
Programming languages (1)
Github contributions (5)
Jomiri/pyfiberamp
Mar 2018 - Apr 2022
Fiber laser and amplifier modeling in Python
Contributions:111 commits, 3 PRs, 44 pushes in 4 years 1 month
pythonlaseropticsfiber-amplifierraman-scattering
Jomiri/raytracer
Oct 2018 - Oct 2018
Contributions:25 commits, 3 pushes in 19 days
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