A/B Test Design and Readout

About this task

This mobility company (51–200 employees) is looking for a director Data Scientist for a single piece of work with a fixed scope and a fixed price. Experiment design that holds up.

It is a self-contained job: scope, checklist and price are agreed before you start. It is an automotive business with long programme cycles and a strong paper trail.

The work is fully remote. Any location in United Kingdom works, with a few hours of overlap with the team's day. Evenings or weekends are fine, as long as the agreed weekly output is there.

What you deliver

• Design the test, size the sample, run the readout and write the decision memo.
• A 20-minute walkthrough call, or a recorded screen share if you prefer
• A final note stating what was checked and what was left out of scope
• The finished deliverable in the agreed file format, with sources and assumptions listed

How the work runs

• Day 1: scope confirmed in writing, files shared
• Middle of the period: draft shared for early feedback
• Last day: final version and handover note

Duration: about 10 working days. Accepted when the output matches the agreed checklist and the sample check passes; the recruiter confirms by e-mail.

Tools

How you get paid

• The company prepays Deftridge before your first hour, so payment does not depend on a late invoice.
• Deftridge pays you in GBP after the company confirms the hours or the deliverable. The payment date is written in your task agreement.
• You work as an independent contractor: you report your own income, and your recruiter sends the statements your accountant needs.
• You never chase the company. Questions about money go to Deftridge.

What happens after you say you're interested

1. Within one working dayA recruiter writes to you to confirm your hours and the rate you want.
2. You agree the rateYou and the recruiter fix an exact rate inside the company's range. You decide whether to go ahead.
3. With your written OKThe company sees the anonymous profile below. Most companies answer within three working days.
4. StartYou sign the task agreement and the company's confidentiality terms through Deftridge, and begin on the date above.

What the company sees about you

First name, field, experience, tools and the hours you offer. Not your surname, your employer or your contact details.

How this rate compares

The midpoint of this range, £74 an hour, is below the median director Data Scientist rate in the United Kingdom (£75). The shaded band is the 25th to 75th percentile of the market.

All Data Scientist jobs in United Kingdom · Data Scientist rates in United Kingdom · Data & Analytics jobs

Questions about pay and privacy

The rules are the same for every task. Pricing explains the 15% fee, prepayment and when you are paid; How it works covers matching, what the company sees and side work next to a job.