Senior Data Scientist - Experimentation and Causal Inference

Senior Data Scientist - Experimentation/Causal

Contract Length: 6 months

Rate: £650pd (Inside iR35 if UK based)

Location: Fully Remote

Start: ASAP – ability to deliver impact from Week 1 required

Digitech are partner with a globally recognised tech brand, with unicorn status, who are seeking a highly experienced Senior Data Scientist to join on a 6 month contract and drive experimentation, insights, and strategic decision-making across the business.

This role requires someone who can hit the ground running, operate autonomously, and communicate effectively with senior stakeholders.

You will work across a variety of complex analytical problems, owning experimentation end-to-end—even when ideal conditions such as user randomisation or high statistical power are not present.

Responsibilities:

• Lead the design, execution, and analysis of experiments, including:

Quasi Experimental Techniques

A/B tests

Difference-in-difference

Pre-/post-analysis

• Low-power and constrained-randomisation experimentation
• Partner closely with senior non-technical stakeholders to translate business needs into analytical solutions.
• Communicate complex concepts clearly, in person, in writing, and through well-structured analytical code.
• Mentor and support junior analysts/data scientists.
• Deliver meaningful business impact quickly by identifying opportunities, prioritising effectively, and executing with speed.
• Apply strong problem-solving and critical-thinking skills to uncover insights and guide decision-making.
• Work cross-functionally to ensure data science outputs are actionable, practical, and aligned with business priorities.

Required Skills:

• 6+ years of experience in Data Science or related analytical roles.
• Deep expertise in experimentation, including advanced techniques and real-world constraints (e.g., no randomisation, low-power scenarios).
• Proficient in Python or R, with strong hands-on experience in statistical modelling and experimentation frameworks.
• Working knowledge of SQL for data extraction and manipulation.
• Exceptional communication skills, with the ability to engage senior non-technical stakeholders.
• Proven ability to work autonomously, deliver impact quickly, and manage competing priorities.
• Strong analytical mindset with high attention to detail and a pragmatic approach.
• Demonstrated ability to think creatively and translate ambiguous business questions into clear analytical approaches.
• Experience coaching or leading junior team members.