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Freelance Senior Data Scientist

Publicis Production

London

On-site

GBP 60,000 - 120,000

Full time

30+ days ago

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Job summary

A leading advertising services company is seeking a Senior Data Scientist in London. This role requires developing data strategies and building solutions to enhance business operations. Candidates should have strong Python skills, experience in machine learning frameworks, and the ability to present complex concepts to non-technical stakeholders. The position offers opportunities to work with cloud platforms and promote best practices in data science.

Qualifications

Self-motivated and able to take ownership of projects.
Collaborate closely with stakeholders across product and engineering.
Experience in marketing, operations, or NLP is a plus.

Responsibilities

Develop data strategies across multiple platforms.
Build and implement data solutions for forecasting functionalities.
Lead the design and deployment of data strategies and ML models.

Skills

Strong coding skills in Python

Expert in Python and ML frameworks

Strong statistical background

Experience with SQL

Excellent communication skills

Experience with cloud platforms

Familiarity with MLOps

Hands-on experience with LLM stacks

Interest in AI trends

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We are looking for a Senior Data Scientist to join our data team and help transform complex data into actionable insights that enable strategic decision-making.

You’ll work at the intersection of machine learning, analytics, and business strategy and the associated technical and non technical teams —helping to shape data-driven solutions and strategies that power our data products and production operations.

The main objective of this role will be to develop the data strategies across multiple platforms and sources, build and implement the required data solutions in order to feed production platform’s forecasting and visibility functionality.

As a senior member of the team, you’ll be self motivated and be able to take ownership of projects, collaborate closely with stakeholders across product, engineering, and business to deliver data science solutions.

Experience:

· Strong coding skills in Python, including libraries such as pandas, scikit-learn, TensorFlow, or PyTorch.
· Expert in Python and ML frameworks (PyTorch, TensorFlow, Sklearn), with experience across NLP, computer vision, and LLMs.
· Strong statistical and experimental design background, including A/B testing and causal inference.
· Experience working with SQL and large-scale datasets.
· Demonstrated ability to turn ambiguous business problems into structured data science projects and implement them to enable action in end state platforms
· Excellent communication skills and ability to present complex ideas to non-technical stakeholders.
· Experience with cloud platforms (AWS, GCP, Azure) and tools like Databricks, Snowflake, or BigQuery.
· Familiarity with MLOps, model monitoring, and production deployment.
· Experience in a specific domain (e.g., marketing, operations, fraud, personalization, NLP) is a plus
· Hands-on experience with LLM stacks (e.g., Mistral, LangChain, Chroma, Hugging Face Transformers).
· Interest in staying current with AI trends and contributing to internal R&D or innovation initiatives.
· Work across and support a range of data use cases including analytics and data provisioning
· Lead the design, development, and deployment of data strategies, machine learning models and advanced analytics solutions to support recommendation and insight to production use cases
· Apply statistical techniques to extract insights and support data-driven decision-making.
· Work alongside data engineering in requirements for data pipelines and feature engineering
· Promote best practices in data science, model validation, documentation, and reproducibility.
· Limited travel may be required depending on team needs.
· Flexibility to operate in a global organization.

Seniority level

Seniority level
Mid-Senior level

Employment type

Employment type
Full-time

Job function

Job function
Information Technology, Analyst, and Science
Industries
Advertising Services

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