Wei-Chen Liao

Senior software engineer at Appier in Taipei, building recommendation systems on top of large-scale event data. Previously four years at KKBOX on the backend infrastructure team, where he shipped the playlist personalization pipeline. He writes about practical AI integration and project scoping for developers who build alone.

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2 tools by Wei-Chen Liao.

• AI dev tools

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  AI Code Checker: Free Instant Code Quality Score Tool

  July 26, 2026

  Paste your code and this free ai code checker scores it 0-100 on nesting, comments, magic numbers and naming, right in your browser, no signup.

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  Excel Formula Generator: Describe It, Get the Formula

  July 13, 2026

  Describe your spreadsheet problem and this free excel formula generator matches it to a real Excel pattern, then lets you fine-tune the cell references before you copy the result.