Senior Data Analyst

Senior Data Analyst London - hybrid 2-3x a week

Up to £55,000

This is a strong opportunity for a Lead Data Analyst to step into a high-impact role within a fast-growing data and advertising technology environment. You will play a key part in shaping how advanced analytics supports both client delivery and business growth, while building your leadership capabilities in a supportive, collaborative team.

The Company They are a London-based advertising technology and media business, founded in recent years and already scaling rapidly. The organisation partners with agencies and brands to improve campaign performance, win new business, and drive better marketing outcomes through data. With a multidisciplinary team of analysts, data scientists and engineers, they are focused on innovation across the full lifecycle of advertising campaigns. Their environment encourages collaboration, learning, and continuous improvement.

The Role As a Senior Data Analyst, you will support the Head of Business Intelligence in delivering high-quality analytics and guiding best practice across the team. You will work across a range of client-focused projects, using data to generate insight and recommendation.

Lead the delivery of advanced analytics projects across campaign, customer, and commercial data

Ensure quality and best practice across analytical outputs within your team

Translate complex datasets into clear, actionable insights for stakeholders

Support pre-campaign analysis, campaign strategy, and post-campaign evaluation

Mentor and develop junior analysts, with responsibility to grow a small team over time

Manage multiple priorities and deadlines in a fast-paced, client-facing environment

Collaborate with data scientists and engineers to enhance analytical capability

Contribute to improving processes, tools, and ways of working within the BI function

Your Skills & Experience

Strong experience using Python for data analysis

Advanced Excel and confidence working with large, complex datasets

Solid understanding of data modelling, data cleansing, and validation techniques

Experience delivering analytics projects in a commercial or client-focused setting

Ability to manage multiple projects and priorities effectively

Strong communication skills, with the ability to present insights clearly

Interest in mentoring or leading others, with a desire to develop leadership skills

Exposure to media, marketing, or agency environments is beneficial but not required

What They Offer

Salary of £55,000 plus benefits

Hybrid working model with flexibility

Clear pathway into people management, starting with mentoring and growing a team

Exposure to advanced analytics and increasing involvement in more statistical work over time

Opportunity to influence a growing analytics function and make a visible impact

Collaborative working environment with strong technical talent

How to Apply

If you are a commercially minded data analyst looking to step into a leadership role and further develop your technical and strategic impact, please apply with your CV.