This is a role for someone who enjoys solving commercial problems, not just managing advertising platforms.

You’ll work with established eCommerce brands to identify opportunities, shape paid media strategy and make commercially grounded decisions backed by data. Alongside specialists in CRO, SEO and Analytics, you’ll help clients understand what drives profitable growth—and where to focus next.

Why join Proof3?

This isn’t an agency where you’ll inherit 25 accounts and spend your days tweaking bids.

You’ll work with a small portfolio of ambitious eCommerce brands, supported by specialist CRO, SEO and Data teams that help improve performance rather than simply report on it.

You’ll be trusted to shape strategy, challenge clients constructively and focus on what actually matters: profitable growth, not vanity metrics.

We care far more about commercial outcomes than platform metrics. If you enjoy solving business problems, testing new ideas and working with people who value evidence over opinion, you’ll fit right in.

What you’ll be doing

Own paid media strategy across a portfolio of multi-million pound eCommerce clients
Develop clear, commercially grounded roadmaps aligned to client growth targets
Lead the planning and execution of paid media campaigns across a range of digital channels, with Google, Microsoft and Meta as the primary platforms.
Continuously evaluate and test new channels where they can create commercial advantage.
Go beyond platform metrics - focus on profitability, contribution, and real business impact
Continuously test and refine targeting, creative, and messaging to improve performance
Analyse performance deeply, turning data into clear actions and recommendations
Present insights and strategy confidently to clients, acting as a trusted partner rather than just a delivery function
Work closely with CRO and SEO teams to align acquisition with on-site experience and conversion
Identify opportunities to scale accounts, expand channels, and increase client investment where justified
Stay ahead of platform changes, industry trends, and emerging opportunities and apply them pragmatically

What you’ll bring

3–5+ years’ experience managing paid media for eCommerce brands, ideally agency-side
A strong track record of driving measurable growth (not just managing spend)
Deep hands-on experience with Google Ads, Microsoft Ads, and Meta
Good experience configuring and managing tagging & tracking setups using tools like Google Tag Manager (GTM, GA4, pixels, custom events)
Experience working with product feeds, Shopping, and Performance Max at scale
Comfortable working with data - able to interrogate performance and spot what actually matters
Commercial awareness - you understand margins, CAC, and profitability, not just CPCs and CTRs
Confident communicator who can challenge clients constructively and build long-term trust
Proactive and accountable - you take ownership of outcomes, not just tasks
Strong attention to detail without losing sight of the bigger picture
Able to operate in a fast-moving environment where priorities shift and expectations are high

Bonus points

Meta Blueprint / Google certifications
Experience working alongside CRO teams or running experiments alongside paid activity
Perks of the job
Competitive salary and career progression
30 days holiday (inclusive of public holidays)
Flexible working arrangements including remote working
Company pension scheme
Private healthcare
Bonus incentive scheme
Childcare and eye care vouchers
Regular appraisals and personal development plans
Events and conferences attendance actively encouraged

About us

Proof3 is dedicated to empowering multi-million pound eCommerce businesses with data, insight and solutions for growth. Backed by iWeb—an Adobe Commerce Gold Partner with 30 years of eCommerce experience—we help brands turn data into more traffic, customers and profitable sales. We connect the dots between performance, platform and people to unlock genuine growth.

Our success is built on hiring bright, ambitious people and giving them the support, trust and freedom they need to thrive.

Proof3

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