Akihiko Koizuka
Programmer at Dwango Co., Ltd.
Saitama Prefecture, Japan
Summary
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SeniorAkihiko Koizuka is a seasoned programmer with over two decades at Dwango, including long-term development work on the influential Japanese video platform "Nico Nico Douga" since 2006. Based in Saitama Prefecture, he brings deep institutional knowledge of large-scale multimedia systems and a practical, hands-on engineering approach. His GitHub identity preserves his Japanese name (戀塚 昭彦), signaling a developer rooted in local tech culture while engaging with broader open-source practices. With 11 years of explicitly counted experience and an ongoing role since 1999, he combines legacy-system wisdom with evolving web and video delivery expertise. Colleagues can rely on him for dependable, production-focused solutions shaped by years of shipping real user-facing features.
11 years of coding experience
Japanese, Chinese
Github Skills (50)
studio10
broadcast10
twitch10
live-streaming10
javascript10
electron10
broadcasting10
typescript10
directshow10
ffmpeg10
streaming-video10
obs10
youtube10
screen-recording10
facebook10
Programming languages (8)
Github contributions (5)
koizuka/generate-icons
May 2021 - Nov 2024
a command line tool to generate icons defined in manifest.json from a SVG file.
Contributions:2 releases, 11 PRs, 37 pushes in 3 years 7 months
command-line-toolmanifestdefinedsvgmanifest-json
koizuka/build-wavefile-blob
Nov 2021 - Mar 2023
Build Blob contains Linear PCM WAV file from audio samples
Contributions:99 PRs, 107 pushes, 1 branch in 1 year 4 months
audio-samplesblobpcmwavlinear
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