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2 jobs
4 hours ago
Windowsエンジニア／システムエンジニア（パッケージソフト・ミドルウェア）
New APACFull-time
Japan
港区, 東京都Windows engineer/system engineer at OPTIM, a TSE Prime-listed AI/IoT company: develop and maintain Windows applications and agents in C++/C# with Win32API, analyze OS behavior to troubleshoot issues, and coordinate technical requirements across departments. Hybrid work from Tokyo HQ (3+ office days, up to 2 remote days).
AI Claude Code C++ C# Ruby
4.5M – 7M JPY 4 hours ago
Windowsエンジニア／プロジェクトマネジャー・リーダー(WEB・オープン・モバイル系）
New APACFull-time
Japan
港区, 東京都Windows engineer / PM-leader at OPTiM (TSE Prime-listed) who develops and maintains Windows applications and agents in C++/C# with Win32API — design, implementation, verification, refactoring, and OS-level log analysis/troubleshooting — plus technical coordination across internal teams, using generative AI tools (Claude Code, Codex) to streamline docs and dev workflows.
AI Claude Code C++
5M – 7.5M JPY