Jean François CASSAN
Software Engineer
Paris, Ile-de-France
Summary
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RockstarJean François CASSAN is a Paris-based software engineer with 11 years of experience building business applications as a freelance consultant and hobbyist programmer. He blends practical consulting work with deep backend expertise, notably contributing to the go-ora project where he improved Oracle number encoding/decoding for greater accuracy and performance. His open-source contributions show a strong grasp of low-level binary formats and numerical representations, reflecting attention to correctness in data conversion. Comfortable across enterprise integrations and standalone tools, he focuses on reliable, efficient implementations rather than flashy front-ends. He brings the agility of a freelancer together with the rigor of an engineer who optimizes critical data paths.
11 years of coding experience
Github Skills (9)
go10
go-testing10
testing10
clientside9
oracles9
webclient9
golang9
data-conversion9
oracle9
Programming languages (8)
Github contributions (5)
sijms/go-ora
Nov 2020 - Nov 2020
Pure go oracle client
Role in this project:
Back-end Developer
Back-end DeveloperContributions:35 commits, 11 PRs, 55 comments in 14 days
Contributions summary:Jean's contributions primarily revolve around enhancing the `go-ora` repository, a pure Go Oracle client. They've focused on improving the double-precision floating-point number decoding functionality, as indicated by the addition of tests for different numeric representations. Further, the user refactored the internal `DecodeInt` function for improved performance, as well as refactored the `EncodeDouble` and `ToNumber` functions. The user's work demonstrates a strong understanding of the internal binary representation of Oracle numbers and a focus on improving the accuracy and efficiency of data conversion within the client.
gooracle-clientgolangoracle
simulot/immich-go
Jul 2023 - Mar 2026
An alternative to the immich-CLI command that doesn't depend on nodejs installation. It tries its best for importing google photos takeout archives.
Contributions:92 releases, 62 reviews, 539 PRs in 2 years 8 months
cligoogle-photosnodejsgolangimmich-cli
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