CSV is the documented process proving a GxP computerised system consistently performs its intended function , backed by regulatory-approved test protocols.
Definition
Computer System Validation is the documented process of demonstrating that a computerised system consistently does what it's supposed to do in a GxP-regulated environment. It includes a defined lifecycle of activities , user requirements, risk assessment, design qualification, installation qualification, operational qualification, and performance qualification. In regulated industries, CSV is a regulatory requirement, not an internal quality choice.
What this means when you're hiring
CSV experience is the most commonly requested compliance skill I see on job briefs from pharma, biotech, and medical device clients. Candidates with genuine CSV experience understand documentation standards, test protocol writing, deviation management, and how to interact with QA during validation execution. It's a fundamentally different skill set from general software testing.
Where candidates get this wrong
People confuse CSV with software QA testing. They overlap, but they're not the same. CSV in a GxP context requires specific regulatory documentation , validation plans, IQ/OQ/PQ protocols, validation summary reports , that must be approved by QA before execution. You can't reuse standard software test plans and call it CSV.
How expectations change by level
Junior validation engineers execute approved protocols and record results. Mid-level engineers write protocols, manage deviations, and produce validation reports. Senior engineers design validation strategies, lead validation projects, manage QA relationships, and prepare documentation for regulatory inspections.
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