Overview
Serotonin is a performance-driven creative agency built for ambitious consumer brands.
We’ve worked with brands like ASSOS of Switzerland, Rudy's, British Cycling, New & Lingwood, Riverstone Living and many more. We believe good creative is what gets you noticed; performance is what keeps you growing. We do both. We’re growing fast, moving fast, and need leaders who can think big and roll their sleeves up.
The Role — a social-obsessed creative-thinker who lives online and knows how to turn community insights into scroll-stopping work. This isn’t just a content scheduling job. It’s about thinking and moving like a creator. You’ll be in-platform every day, spotting trends, building community, fuelling influencer campaigns, and pitching ideas that feel more TikTok than TVC. You’ll collaborate across strategy, performance, content, and creative to build always-on social calendars that actually work - not just tick a box. If you thrive in a fast-paced agency, love turning real-time insight into reactive ideas, and believe brand isn’t what you say but what you post, then this could be your moment.
What You’ll Do
Content & Channel Strategy
* Own the social strategy for multiple clients - from daily TikToks to long-form content campaigns
* Build monthly content calendars backed by insight, trends, and creative thinking
* Produce copy and caption banks that sound more like the internet and less like a press release
* Work with our creative and production teams to brief, plan, and execute content days/shoots
* Analyse what works (and what flops) across platforms and feed it back into your thinking
Community, Culture & Trends
* Stay glued to the algorithm - know what’s blowing up, what’s getting binned, and why
* Run daily social listening and trend spotting sessions
* Engage with followers, reply to comments, and help brands sound human
* Manage influencer outreach, product seeding, and brand partnerships
Strategy & Client Thinking
* Bring the voice of the customer into every campaign
* Write decks, insights, and creative rationales that sell the idea and the outcome
* Support client reporting with performance breakdowns, trend commentary, and forward recommendations
* Be the go-to for social-first ideas that ladder up to business results
What You Bring
* 2+ years in a similar social-first role - whether at an agency, in-house, or freelancing
* A finger on the pulse of TikTok, Instagram, YouTube Shorts, and whatever’s next
* Experience crafting content calendars, writing copy, and planning influencer or brand campaigns
* An instinct for what makes good content - plus experience with basic tools like Canva, CapCut, or Adobe Suite
* Confidence in front of clients and collaborators - you can pitch ideas clearly and back them up with insight
* Comfortable working fast, flexibly, and cross-functionally
* Strong understanding of marketing principles, and how brand and performance can work together
The Package
* Private health insurance including mental health support
* Salary is £26-30k (depending on experience)
* 14 day "Work From Anywhere" policy
* Pet-friendly Manchester office
* Flexible start-end times
* Free breakfast and stocked snacks
* Regular team socials and wellness perks
* Opportunity to shape the agency and scale a high-performing campaign team
* A chance to lead at one of Manchester’s fastest-growing performance agencies
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