Junior Data Scientist

Harnham - Data and Analytics Recruitment; City Of London; On-site; GBP 40,000 - 50,000; Full time

Job summary

Harnham - Data and Analytics Recruitment is seeking a Junior Data Scientist in London to join an early-stage AI business. You will work closely with the founders and gain exposure to a broad range of data and AI projects across data science and data engineering.

Responsibilities include analyzing large datasets, building data pipelines, and contributing to Generative AI initiatives using modern LLM technologies.

Qualifications

• STEM background required.
• Commercial experience with data in a professional environment.
• Strong Python and SQL skills.
• Experience with ML libraries in professional, research, or personal projects.
• Exposure to Generative AI tech and LLMs.
• Understanding of software engineering fundamentals and development best practices.

Responsibilities

• Analyze large and complex datasets to uncover insights and business value.
• Support the development of data pipelines and data engineering processes.
• Work with proprietary client data to improve analytics and AI outputs.
• Contribute to Generative AI projects using modern LLM technologies.
• Assist with data labelling, model training, and experimentation.
• Build reporting, visibility, and decision-support solutions.
• Collaborate with stakeholders to translate business challenges into data-driven outcomes.
• Explore AI applications across operational, compliance, and sustainability use cases.

Skills

Python

SQL

ML libraries

Generative AI

Software engineering

Data analysis

Education

STEM degree (CS/Math/Physics/Engineering)

Job description

Junior Data Scientist

London | £40,000 - £50,000

This is an excellent opportunity for a Junior Data Scientist to join an early-stage AI business at a pivotal point in its growth. With a growing client base, proprietary datasets, and direct access to experienced founders, you'll have the chance to make a tangible impact while accelerating your development across Data Science, Data Engineering, and Generative AI.

The Company

They are building an AI-powered platform that helps businesses navigate complex operational and compliance processes through intelligent data solutions. Working in the global trade space, they transform documentation into actionable insights that support decision-making, visibility, and regulatory compliance. The business has secured strong funding and offers a collaborative startup environment where curiosity, ownership, and a passion for data are highly valued.

The Role

As a Junior Data Scientist, you will work closely with the founders and gain exposure to a wide range of data and AI projects.

Responsibilities include:

• Analysing large and complex datasets to uncover insights and business value
• Supporting the development of data pipelines and data engineering processes
• Working with proprietary client data to improve analytics and AI-driven outputs
• Contributing to Generative AI projects using modern LLM technologies
• Assisting with data labelling, model training, and experimentation
• Building reporting, visibility, and decision-support solutions
• Collaborating with stakeholders to understand business challenges and translate them into data-driven outcomes
• Learning how AI can be applied across operational, compliance, and sustainability-focused use cases

Your Skills & Experience

• Strong academic background in a STEM subject such as Computer Science, Mathematics, Physics, Engineering, or a related discipline
• Commercial experience working with data in a professional environment
• Strong Python and SQL skills
• Experience using machine learning libraries through professional work, research, or personal projects
• Exposure to Generative AI technologies and Large Language Models
• Understanding of software engineering fundamentals and development best practices