Performance Marketing Manager

Simmer; Greater London; On-site; GBP 42,000 - 62,000; Full time

Job summary

Simmer is seeking a Performance Marketing Manager with solid foundations in paid social to take ownership of paid acquisition across Meta, TikTok and Reddit, working with the Growth Lead to steer spend, tests and creative.

You'll be inside the accounts daily, analysing performance, optimising campaigns and budgets, while collaborating with Creative to turn insights into compelling hooks and messages. 2–3 years’ experience in a fast-moving, founder-led startup in London is preferred.

Qualifications

• 2–3 years of hands-on paid social experience.
• Proficiency with Meta Ads Manager and platform analytics.
• Analytical and commercially-minded with strong decision-making.

Responsibilities

• Own Meta day-to-day performance including campaigns, budgets and tests.
• Diagnose drivers of CPA and growth beyond numbers.
• Translate data into winning hooks and creative briefs.
• Develop hypotheses, run experiments and analyze results.
• Support TikTok, Reddit and emerging channels.
• Improve reporting and testing frameworks and feedback loops.
• Grow into creative strategy and customer insights.

Skills

Paid social

Meta Ads Manager

Campaign optimisation

Data analysis

Budget management

Ownership

Job description

At Simmer, we're on a mission to make healthy eating effortless. We create chef-made, high-protein meals inspired by flavours from around the world, making it easier for busy people to eat well every day.

What started with £10 worth of ingredients and a handful of family recipes has grown into one of the UK's fastest-growing businesses. In both 2025 and 2026, Simmer was recognised by The Sunday Times as the UK's 5th fastest-growing company.

We're proud of that, but we're much more focused on what comes next. We're a profitable, founder-led business building in a category we think can become much bigger. We've grown quickly through product quality, performance marketing and a deep understanding of our customers. Now we're entering the next phase.

We're still a deliberately lean team, which means people here get close to the work, the customers and the decisions that shape the business. Good ideas can come from anywhere, and the people who join us have the chance to make a real impact.

We're ambitious, but we don't take ourselves too seriously. There's still a huge amount to build, and we think we're only at the beginning.

The Role

We're looking for a Performance Marketing Manager with solid foundations in paid social who wants significantly more ownership, exposure and responsibility.

You'll own paid social performance across Meta, TikTok and Reddit, working closely with our Growth Lead to make daily decisions around spend, performance, testing and creative.

You'll work directly with our Growth Lead and take day-to-day ownership of paid acquisition across Meta, with exposure to TikTok, Reddit and emerging channels. You'll be inside the account every day -analysing performance, optimising campaigns, managing budgets, launching tests and deciding what we should do next.

But we don't want to develop you into just a better media buyer. You'll work closely with Creative to understand why ads win or lose, turning performance insight into better hooks, messages, concepts and creative briefs.

If you're 18mth–3 years into performance marketing and want a much steeper learning curve, this is the opportunity.

What you’ll do

• Own Meta day to day - monitoring performance, optimising campaigns, managing budgets and launching tests.
• Understand what's driving CPA and growth - go beyond reporting numbers to diagnose why performance is changing.
• Turn data into creative insight - identify winning hooks, messages, formats and audiences and feed those learnings directly into Creative.
• Build and run tests -develop hypotheses, launch experiments, analyse the results and decide what happens next.
• Support TikTok, Reddit and emerging channels as we identify new opportunities.
• Improve how we work - from reporting and testing frameworks to the feedback loop between Growth and Creative.
• Develop beyond media buying - over time, build much deeper capability in creative strategy, customer insight and commercial growth.

What we’re looking for

You’ll probably have 2–3 years of hands-on paid social experience, either in-house or agency-side.

Most importantly, we’re looking for someone who:

• Knows their way around Meta Ads Manager and has personally optimised campaigns rather than simply reporting on them.
• Understands metrics like CPA, ROAS, CPM, CTR and conversion rate and how they interact.
• Is analytical but also commercially minded - you're interested in why customers behave the way they do.
• Has opinions about creative and wants to get better at understanding why ads win or lose.
• Likes getting into the detail and making decisions.
• Learns quickly and actively seeks feedback.
• Takes ownership rather than waiting for instructions.
• Is comfortable working in a fast-moving, founder-led environment.

What you’ll get from us

You’ll be joining at a stage where there's a huge amount to learn and an equally big opportunity to make an impact. We believe talented people develop fastest when they're given real responsibility, high standards, direct feedback and great people to learn from.

You won't be expected to arrive knowing everything.

What matters more is your trajectory: how quickly you learn, how well you turn feedback into better judgement and how much responsibility you're capable of taking on as you develop.

If you're a couple of years into performance marketing and feel ready for a much steeper learning curve, we'd love to hear from you.