← All product updates

April 21, 2026

Job description regex filters are now case-sensitive

Xoel López
Xoel López

Co-Founder at TheirStack

What changed: Regex patterns in job description filters (job_description_pattern, job_description_pattern_and, job_description_pattern_not) are now case-sensitive by default. Previously, all patterns matched case-insensitively.

Why: Case-sensitive matching gives you more control. You can now distinguish between acronyms like "AI" and words like "aid", or match "React" without catching "react" in unrelated contexts.

What to do if you need case-insensitive matching: Add the (?i) flag at the beginning of your pattern. Everything works exactly as before — you just need to opt in explicitly.

Examples

Before (case-insensitive by default)Now (add (?i) for case-insensitive)
\bpython\b(?i)\bpython\b
\bML.?Ops\b(?i)\bML.?Ops\b
data engineer|data scientist(?i)data engineer|data scientist

Without (?i), \bpython\b now only matches "python" in lowercase — it will not match "Python" or "PYTHON". With (?i), it matches all three, just like before.

API example

{
  "job_description_pattern_and": [
    "(?i)\\bpython\\b",
    "(?i)\\bML.?Ops\\b"
  ]
}

The (?i) flag works on all regex-based job description filters in the Jobs API and Company Search API, as well as in the app UI.