This is a fully remote position , open to candidates based in Spain.
Pay: $60–$65/hr
Role Title: Biostatistician
Role Type: Contractor
Location: Remote
We are engaging Biostatisticians to contribute their clinical statistics expertise to a dynamic customer project focused on AI-assisted clinical research. In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.
Scope of Work
- Author and review evaluation tasks that require deriving, reproducing, or validating statistical outputs from clinical datasets and associated tables, figures, and listings (TFLs).
- Apply expert judgment to assess the correctness and consistency of reported estimates, confidence intervals, p-values, analysis populations, and missing data handling in alignment with the statistical analysis plan (SAP).




- Identify discrepancies between statistical outputs and their narrative descriptions in clinical study reports (CSR), including subtle errors in population definitions, censoring rules, or multiplicity handling.
- Establish defensible ground truth for each evaluation task, documenting the derivation process to enable independent verification.
- Provide structured written rationales distinguishing true statistical errors from acceptable methodological alternatives, employing clear and concise communication.
- Collaborate with a multidisciplinary project team, providing statistical insights and feedback as needed to refine evaluation tasks and criteria.

Preferred Qualifications
- 5+ years as a biostatistician supporting clinical trials at a sponsor, CRO, or academic trials unit.
- Hands-on experience producing or quality controlling TFLs for regulatory submissions and working directly from CDISC SDTM/ADaM datasets.
- Solid understanding of statistical methods used in confirmatory trials, includi

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