Junior Copywriter

Company overview

Catalyst Growth is a digital marketing agency focused on high-impact visual and copy-led advertising. The team creates UGC ads along with static and motion design assets, supporting fast-growing DTC brands around the world as they aim to boost engagement and expand their digital reach.

About the opportunity

The agency is hiring a Junior Copywriter who is eager to learn how high-performing paid social creative is developed. In this role, you will collaborate with Creative Strategists, Designers, and Producers to transform client briefs into concepts designed to perform across Meta, TikTok, YouTube, and other emerging platforms.

This opportunity is ideal for someone who enjoys writing, pays attention to ads that grab their attention, and wants to understand why certain creatives scale while others fade away. You will build skills in crafting attention-grabbing hooks, action-driving scripts, and conversion-focused copy, while also learning how performance data can elevate creative work.

Responsibilities

• Partner with Creative Strategists and Designers to take client briefs from initial idea through final delivery.
• Help shape concepts that combine originality with business goals.
• Bring new angles, hooks, and copy-first ideas to brainstorming sessions and creative reviews.
• Work with Designers to ensure visual and written elements support each other, especially in static creative where every word matters.
• Write copy for multiple paid social formats, including hooks, UGC scripts, headlines, CTAs, static ads, and supporting assets.
• Develop a strong sense of what makes people pause, engage, and convert.
• Learn each client’s tone of voice and apply it consistently across deliverables.
• Tailor copy for different audiences, placements, and platforms within paid social.
• Use performance results and testing feedback to refine and improve creative over time.
• Approach every test as a chance to learn what drives winning creative.
• Build an eye for emerging patterns, trends, and opportunities before they become obvious.

Requirements

• Some copywriting experience is preferred, whether gained through a previous role, internship, freelance work, or a portfolio that demonstrates your ability.
• You should be able to write sharp headlines, inventive creative concepts, and scripts that capture attention quickly.
• Interest in advertising, paid social, and performance-driven creative is essential.
• A collaborative approach and willingness to contribute ideas early and often are important.
• Strong attention to detail, along with the ability to self-edit and produce polished work under pressure, is required.
• Comfort with a fast-moving environment and a mindset focused on learning and continuous improvement are key.

Work arrangement

This is a hybrid position based in London. The team works from the Elephant & Castle office two days per week.

Additional information

No salary or stipend details were provided for this position.