Team
Digital
Location
London (Hybrid Role)
Role Info
2-3 days a week in Old Street, London office
Benefits
Hybrid and flexible working
Regular social get-togethers
Dog-friendly office
Beauty and fitness discounts
Restaurant and shopping discounts
Private medical insurance
Dental insurance
Pension scheme
We’re looking for a confident, curious, and performance-driven Senior Digital Planner to join our team. This role is central to how we deliver media strategy, optimise campaign performance, and evolve our planning frameworks across paid media.
You’ll lead planning across a wide range of paid media channels, including paid search, paid social, and programmatic, using the right mix of platforms to meet campaign goals. You’ll turn briefs into actionable plans, evaluate performance data to guide optimisations, and collaborate with cross-functional teams to connect media with creative and client objectives.
This is a hands-on, strategic role for someone who can own campaign planning end-to-end, work in-platform, and help shape how we plan, test, present, and report in a transforming agency environment.
Your Responsibilities
Lead media strategy for campaigns across paid search, paid social, and programmatic platforms
Build and evolve full-funnel media plans based on client objectives and audience insight
Write and present campaign plans with clear rationale, budget phasing, and test recommendations
Present media strategies and performance insights to clients, both in meetings and written reports
Design, track, and evaluate A/B tests and optimisations across platform, format, and message
Work directly in-platform to set up, monitor, and adjust campaign performance as needed
Interpret campaign performance to shape next steps and feed into client reports
Work with creative, content and strategy teams to connect media with messaging and user experience
Support campaign build, QA, and trafficking where needed
Actively contribute to the improvement of our media planning frameworks, processes and tools
Stay current on media trends and platform innovations — and bring that thinking to clients and team discussions
What we’re looking for
Proven experience planning and optimising campaigns across a mix of digital platforms (e.g. Google Ads, Meta, LinkedIn, programmatic DSPs, TikTok, Reddit or others)
Strong understanding of digital media KPIs and how to use data to drive decision-making
Comfortable presenting plans and results to clients and collaborating cross-functionally
Experience writing media plans and reporting commentary
Ability to independently lead planning from brief through to wrap-up
Experience with campaign testing frameworks and performance innovation
Comfortable working in-platform or overseeing builds in partnership with support roles
Familiarity with employer branding, recruitment marketing, or talent audience behaviour is a plus
Knowledge of Google Tag Manager, GA4, and ATS platforms a bonus
Why join us?
We’re in an exciting phase of change. You’ll help shape how we plan and deliver campaigns, raise the value of paid media, and strengthen the connection between media strategy, performance and creative. This is an opportunity to influence how we work as much as what we deliver.
About ThirtyThree
We are an award-winning Employer Brand and Recruitment Marketing agency that brings together thinkers, writers, doers, and makers. Our team delivers innovative strategies, digital solutions, and multimedia campaigns that make a real impact across various sectors including Finance, Law, Retail, and Engineering.
Our Commitment to Diversity and Inclusion
At ThirtyThree, we are committed to creating a diverse and inclusive workplace. We believe that the best work emerges when talented individuals from all backgrounds and life experiences come together. Our team is dedicated to:
Embracing different perspectives
Supporting individual growth
Creating a culture of mutual respect and collaboration
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Interested in joining our team? We want to hear from you!
Send your CV and salary expectations to work@thirtythree.co.uk

Please refer the Job description for details