Performance Marketing Manager - Paid Social (3 month FTC)

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A Marshmallow career is built on a cycle of continuous growth, with learning at its core. You will be challenged to raise the bar on your capabilities and supported with the right tools and guidance to do so. This ensures you can deliver impactful work and drive change.

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Move our mission, and your career, forward.

We’re looking for a confident, hands-on Paid Social specialist who can step in quickly, take ownership from day one, and operate independently with minimal oversight.

You boast significant Paid Social experience and have managed complex accounts either in-house, or in an agency environment.

• Take ownership of day-to-day Paid Social channel activities to deliver effective performance.

• Manage and optimise budgets across campaigns focussed on efficiency and delivery against KPI and key results.

• Execute integrated full-funnel campaigns across awareness, prospecting and retargeting.

• Actively collaborate with data on existing and evolving KPI and metric frameworks.

• Brief and iterate creative with internal creative partners based on performance and audience insights.

• Support the setup and execution of incrementality or lift testing in partnership with data team.

• Identify cross-channel opportunities and share insights on audience and creative.

• Confidently forecast channel level performance to support planning and budget management.

• Partner with the influencer team to activate and include influencer content in paid social campaigns.

• Report to stakeholders, translating performance into business outcomes.

• You have proven experience managing Meta (Facebook and Instagram) performance channels, owning budgets, strategies and results. You combine commercial acumen with the ability to deliver results at pace.

• You work confidently with cross-functional teams including data, product, agencies and platform partners, ensuring alignment with our growth priorities.

• You’re passionate about performance and paid social, and operate at the forefront of channel and industry innovation and best practice.

• Having full responsibility for channel outcomes, you thrive in a fast-paced, high-growth environment where priorities can shift quickly and you’ll be comfortable making decisions in ambiguity.

• Experience in regulated industries, in particular Financial Services is an advantage, as is a proven ability to navigate complex compliance requirements.

• Hands-on Execution - Strong operational experience running Paid Social campaigns end-to-end. Comfortable owning campaign setup, pacing, optimisation, and troubleshooting across platforms. Happy to stay close to the detail while keeping an eye on overall performance.

• Analytical Skills - Uses data to tell compelling stories and inform decisions. Conducts deep dives into campaign performance to identify trends, opportunities, and risks. Proficient in data visualisation and analytics tools (e.g. Looker, GA) to monitor KPIs, and generate actionable insights. Comfortable working with large datasets and translating analysis into clear recommendations for non-technical stakeholders.

• Forecasting and Planning - Develops short-medium term channel forecasts and budget plans aligned with business objectives and commercial cycles using historic data. Able to optimise spend allocation across campaigns, and track progress against forecasts.

• Strategic input: Understands how Paid Social contributes across awareness, consideration and conversion, particularly in a mid-funnel role. Evaluates performance beyond pure CPA, with awareness of incrementality and cross-channel impact.

• Technical Background - Demonstrates a solid technical understanding of paid social ecosystems including tracking, data, and audience issues, UTM structure. Can work effectively with engineering, analytics, or third-party partners to troubleshoot complex issues.

• Tactics & Optimisation - Builds and executes structured creative and audience testing roadmaps. Identifies scalable tactics to drive efficiency and growth across Facebook and Instagram. Optimises campaigns continuously to achieve performance targets, balancing short-term wins with long-term learning agendas. Comfortable to experiment within the existing framework

• Flexible working: Spend three days a week with your team in our collaborative London office, and own your own working hours. The rest is up to you 🏠

• Competitive bonus scheme - designed to reward and recognise high performance 🌟

• Flexible benefits budget - £50 per month to spend on a Ben Mastercard meaning you get your own benefits budget to spend on things you want. Whether that’s subscriptions, night classes (puppy yoga, anyone?), the big shop or a forest of houseplants. Pretty much anything goes 💰

• Mental wellbeing support – Access therapy and mental health sessions through Oliva 💚

• Learning and development – Personal budgets for books and training courses to help you grow in your role. Plus 2 days a year - on us! - to further your skillset 🤓

• Private health care - Enjoy all the benefits Vitality has to offer, including reduced gym memberships and discounts on smartwatches 🏥

• Medical cash plan - To help you with the costs of dental, optical and physio (plus more!)

• Tech scheme - Get the latest tech for less 🖥

We are not in a position to offer visa sponsorship for this role.

• We break it up into 3 stages:

  • Initial call with a member from our Talent Team (30 mins)

  • Past Experience interview with Hiring Manager (60 mins)

  • Case study interview with a couple of the team (60 mins)

As part of our commitment to maintaining a safe and trustworthy environment, we’ll carry out standard background checks, including a DBS and a Cifas check. These help ensure there are no ongoing criminal proceedings and support the prevention of fraud and other forms of serious misconduct. If anything of concern is identified, it may affect your eligibility for certain roles or services. Feel free to ask our Talent Acquisition team if you have any questions about this!

At Marshmallow, we want to hire people from all walks of life with the passion and skills needed to help us achieve our company mission. To do that, we're committed to hiring without judgement, prejudice or bias.

We encourage everyone to apply for our open roles. Gender identity, race, ethnicity, sexual orientation, age or background does not affect how we process job applications.

We're working hard to build an inclusive culture that empowers our people to do their best work, have fun and feel that they belong.

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