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Data Scientist — A/B Testing & Experimentation Platform

James Macpherson

Freelance · Senior

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About the role

We run 8–12 experiments simultaneously across our mobile app. Our current A/B testing is held together with duct tape — different engineers use different significance thresholds, experiment logs live in three different places, and we've had results overturned twice because of novelty effects nobody accounted for. We need a data scientist to design and implement a proper experimentation platform: standardised metrics, pre-registered experiment plans, sequential testing to avoid peeking, and a clear governance process for experiment sign-off. This is 30% design/documentation work and 70% building the tooling (Python + our existing Amplitude and BigQuery stack).

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Skills

python sql statistics pandas

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Contract Type

Hourly rate

Level

Senior

Budget Range

$70 – $100 / hour

Duration

3 months

Skills

python sql statistics pandas

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