Senior Media Buyer

Channel Factory; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading digital marketing firm in Greater London is seeking a Senior Media Buyer to lead media buying strategy across platforms like Google Ads and DV360. You'll be responsible for managing budgets, optimizing performance campaigns, and leveraging data insights to meet client objectives. The ideal candidate will have 5+ years of hands-on experience in digital advertising, strong analytical skills, and the ability to mentor junior team members. This is a full-time position offering a competitive salary and growth opportunities.

Benefits

Competitive salary

Clear development pathways

Supportive team environment

Qualifications

• 5+ years of experience managing campaigns across various digital platforms.
• Proficiency in conversion tracking and first-party data utilization.
• Experience with A/B testing and creative optimization.

Responsibilities

• Develop, manage and optimize performance campaigns across multiple digital channels.
• Own budget responsibility for accounts including margin management and optimization.
• Leverage data insights to drive strategic decision-making and meet KPIs.

Skills

Analytical skills

Attention to detail

Communication skills

Problem-solving mindset

Audience targeting

Tools

Google Analytics (GA4)

Google Tag Manager (GTM)

Third-party measurement tools

Job description

Senior Media Buyer UK

Location : UK London

Department : Programmatic Solutions

About Channel Factory

Channel Factory provides intelligent marketing solutions for the next generation of contextual safety suitability and performance for brands and agencies. Our platform helps marketers implement automate and scale their marketing programs across the worlds largest video library YouTube and emerging growth channels. We sit at the intersection of marketing and suitability and have a mission of enabling the worlds top brands to consciously connect with the right audience in the right context maximizing suitability and contextual performance.

Channel Factory embodies a strong culture that values diversity collaboration and results. Our bias towards execution balances critical thinking analysis and pragmatic problem solving. We expect a lot from one another and value our thoughtful and intellectually curious company culture.

Summary

As a Senior Media Buyer at Channel Factory you will lead the media buying strategy and execution across Google Ads DV360 Meta TikTok Snapchat etc. ensuring campaigns are optimized meet client objectives and adhere to Channel Factorys performance brand safety and suitability standards particularly on Google Ads & DV360. This senior role requires a deep understanding of digital advertising excellent analytical skills and the ability to mentor junior team members.

Key Responsibilities

• Develop, manage and optimize performance campaigns across multiple digital channels ensuring alignment with business objectives.
• Own budget responsibility for accounts including margin management forecasting and optimization to maximize efficiency and ROI.
• Leverage data insights to drive strategic decision-making ensuring campaigns deliver on KPIs.
• Implement and optimize cross-platform campaigns with a deep understanding of platform algorithms and auction dynamics.
• Utilize contextual and audience segmentation, creative testing and automation strategies to improve campaign performance.
• Collaborate with internal stakeholders to drive campaign success.
• Stay ahead of industry trends, platform updates and emerging technologies to maintain a competitive edge.
• Provide in-depth performance reporting including actionable insights and recommendations for scaling initiatives.
• Attend and represent the team at regular external and internal client meetings.
• Mentoring junior members of the team to increase quality and performance.

Qualifications & Experience

• 5 years of hands‑on experience managing campaigns across Google Meta TikTok Snapchat LinkedIn and X.
• Analytical and critical thinking skills.
• Solutions-oriented mindset with great attention to detail.
• Keen eye for detail and understanding of budget management.
• Expertise in A / B testing, creative optimization and audience targeting.
• Ability to work cross-functionally with internal teams and external partners.
• Strong communication and presentation skills.
• A proactive problem-solving mindset with a passion for performance marketing.
• Deep expertise in conversion tracking, attribution modeling and first-party data utilization.
• Proficiency in Google Analytics (GA4), Google Tag Manager (GTM) and tracking implementation across web and app environments.
• Strong understanding of incrementality testing, MMM and lift studies.
• Hands‑on experience with third-party measurement & verification tools.
• Strong data-driven mindset with the ability to interpret analytics, optimize performance and drive measurable outcomes.

Why Join Us

• We’re a people‑first company with a passion for fresh thinking bold ideas and driving change across the digital ecosystem.
• Take ownership of client relationships and lead strategic initiatives for global brands and agencies.
• Operate in a fast-paced data-led environment where you can drive real impact.
• Grow your expertise in contextual and programmatic advertising solutions.
• Collaborate with a supportive inclusive team that values creative thinking and continuous learning.
• Access clear development pathways and career progression opportunities.
• Enjoy a competitive salary and benefits package.

Employment Type

Full‑Time

Vacancy

1