Social Media Executive in Cardiff

Organisation Profile

Proteus Digital is a human-first social media marketing agency based in Cardiff. We build real, human, performance-led content for ambitious businesses through monthly campaigns on Instagram, Facebook, TikTok and LinkedIn. We work with clients all across the world on social media strategy, content production, Meta ads and website builds. We're a young, fast-moving team and we're growing fast. This isn't a big agency where you disappear into a department. Everyone here has real responsibility and real impact from day one. We're in this for the long game and we want someone who is too.

There are eight things that matter more to us than your CV:

• You fail fast and build back faster. You try things, they don't work, you learn and you move. You don't freeze up and you definitely don't blame other people. You're accountable for your wins and your losses. You own your results, good and bad. And you don't make excuses!
• You challenge everything, including the founder. We don't want yes people. If you think something is wrong, say it. If you've got a better idea, bring it. The best work comes from people who push back.
• You're kind, not just nice. There's a difference. Nice avoids hard conversations. Kind has them because it's the right thing to do.
• You treat it like it's your business. You care about how clients are doing, you notice things that could be better, and you act on them without being asked.
• You embrace new technology. AI, new tools, new platforms and you're curious about all of it and you're willing to experiment.
• You want to be in the office. We work together, in person, at The Maltings in Cardiff. It's a huge part of how we work and why we work well.
• You're in it for the long term. This isn't a stepping stone. We want someone who wants to grow with Proteus and eventually become the powerhouse of the company.

The Role

This role will involve managing client social media accounts, running Meta ad campaigns and leading the creative output of the agency. Starting with a structured onboarding period where you'll learn how Proteus operates, how we think about content and how we deliver results for clients. Following your probationary period, you'll take on greater ownership of the business. Managing clients more independently, leading creative decisions and working directly alongside the founder to grow the agency. The long term goal is for the right person to become an operational and creative leader within Proteus.

Key Responsibilities

• Scheduling and manually posting content across Instagram and TikTok for all clients.
• Creating graphics, carousels and static posts using Canva or Adobe.
• Building, launching and managing Meta ad campaigns on behalf of clients.
• Conducting social media and content research (trends, hooks, formats, what's performing and why).
• Running Answer the Public and keyword research to inform strategy.
• Keeping up with platform and algorithm changes across Meta and TikTok.
• Managing the day-to-day needs of client accounts.
• Learning Meta ads inside out and becoming genuinely excellent at it.

Skills Required

We do not expect you to arrive knowing everything. We expect you to arrive wanting to learn everything.

Essential:

• Based in Cardiff with a genuine desire to work from our office at The Maltings.
• A real passion for social media. You use it, you think about it, you understand how it works.
• Some graphic design experience, Canva is fine, Adobe is a bonus.
• An interest in paid social and Meta ads, you don't need to be an expert yet but you need to want to be.
• Strong written communication.
• The ability to manage multiple clients and tasks without dropping the ball.

Desirable:

• Experience in a social media, marketing or agency environment.
• Familiarity with Meta Ads Manager.
• An understanding of content strategy and performance metrics.

What You Will Gain

In this position, you will:

• Have a genuine and realistic pathway to a senior role. The goal is for the right person to eventually help run this business, not just work in it.
• Be mentored directly by the founder with real investment in your growth as a creative and a strategist.
• Join a fast-growing agency at an exciting stage, you won't be inheriting a finished product, you'll be helping build one.
• Work from a brilliant office at The Maltings in Cardiff! A creative, collaborative workspace with a café on site and a free gym included.
• Be part of a small, tight-knit team where communication is everything and no one disappears behind a job title.
• Gain hands-on experience across content, strategy, graphic design and paid social in a fast-moving environment.
• Understand how a modern digital agency operates, grows and wins.

Additional Information

• Location - The Maltings, East Tyndall Street, Cardiff CF24 5EA. Office based. This role is not remote.
• Hours - Part time, 24-28 hours per week across 5 days, with a genuine and structured pathway to full time after the probationary period.
• Start date - 1st July 2026
• Suggested date for interview - 8th to 15th of June 2026

How to Apply

Please send the following to hello@proteusdigital.net:

• An up to date CV.
• A cover video telling us who you are, what you've done and why Proteus. If you've got work to show us, include it.

Applications will end on the 1st of June 2026. We reserve the right to close this role early if the right person is found.