Antti Kupila
Staff Engineer at ICEYE
Espoo, Mainland Finland
Summary
🤩
Rockstar🎓
Top SchoolAntti Kupila is a Senior Software Engineer based in Espoo, Finland with 13 years of experience building backend systems and shaping architecture across startups and product teams. He has held senior and architect roles at companies like VanMoof, Stream, and now ICEYE, bringing pragmatic design and hands-on implementation to distributed systems. Antti contributes to notable open-source tooling—improving HashiCorp's HCL packing/unpacking logic—showing attention to tricky edge cases like nested block decoding and file index marshaling. His background spans product-focused engineering, freelance creative technology, and early-stage founding, giving him a blend of technical depth and product intuition. Colleagues rely on him to untangle complex data-handling bugs and translate them into robust, maintainable solutions.
13 years of coding experience
16 years of employment as a software developer
Arcada University of Applied SciencesSpecialization: Technology, Digital Media, Specialization: Technology, Digital Media at Hyper Island
English, Swedish, Finnish, German, Dutch
Stackoverflow
3,129reputation
289kreached
44answers
7questions
Github Skills (13)
go10
configuration-language10
actionscript9
migration6
objective-c6
flash6
opengl-es6
apache-flex6
mxml6
iphone6
optimization6
image6
json4
Programming languages (17)
Github contributions (5)
hashicorp/hcl
Jan 2019 - Jul 2019
HCL is the HashiCorp configuration language.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 commits in 6 months
Contributions summary:Antti primarily focused on improving the `hclpack` package, which handles the packing and unpacking of HCL configuration data. Their work involved fixing critical bugs related to decoding nested blocks and handling missing data ranges during partial decoding. They also addressed issues with marshaling and unmarshaling file index positions within the packed data, and fixed incorrect name range assignments for unsupported attributes.
configuration-languagehashicorphcljson
akupila/nixos-config
Aug 2023 - Jun 2026
Contributions:164 pushes, 1 branch in 2 years 11 months
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