Thumbnails Specialist

As a Thumbnails Specialist, you will collaborate with our team to take our video performance to the next level, combining visual creativity and data analysis. If you are passionate about Visuals & Artificial Intelligence and understand the inner workings of YouTube, this is the place for you.

About the Company

QforMedia is a media company that owns two very large and successful YouTube Channels: Quantum Makers and Quantastic, with a combined audience of more than 23 million subscribers and more than 150 million views per month.

Quantum Makers is a leading YouTube channel displaying some of the most viral documentaries, constructions, Do-It-Yourself projects, and cutting-edge technology. With over 18 million subscribers and more than 20 videos surpassing 30 million views, the channel delivers engaging, high-quality content with top-talented creators who build extraordinary works and inspire a global audience.

Quantastic is much more than a YouTube channel. With over 5 million subscribers, it’s a passionate community of art lovers and a home for creativity. It showcases talented artists and various techniques including artistic expressions, painting, sculpture, digital art, and handicrafts.

About the Job

We are not looking for a traditional designer, but a visual strategist. You will work side-by-side with the current head of the area, managing the entire lifecycle of our thumbnails. Your main goal is not just to get the click (CTR), but to ensure the image is the perfect promise to maximize watch time.

As an Thumbnails Specialist, your core responsibilities will be:

• AI Image Generation: Using frames from our videos, you will use Top notch AI tools to generate a high volume of images, enhancing visual quality, and paying close attention to textures, realism, and lighting.

• Agile Composition: You will use Canva to quickly and efficiently assemble, compose, and add the final touches to the images.

• Execution of the "24/24" Strategy: You will select and prepare the 24 best variations to rotate every hour during the first day of the video's publication.

• Analysis and A/B Testing: You will extract and interpret data directly from YouTube Analytics. You will identify which thumbnails best retain the audience, isolate variables and winner concepts (composition, colors, elements, contrasts), and create new iterations to outperform the winning image.

• Visual Quality Control: You will actively avoid clickbait and "AI slop" (obvious AI errors). You will ensure that each thumbnail is representative of the video's actual content and visually spectacular.

• Collaborative and Flexible Work: You will dynamically share all phases of the process, adapting your tasks according to the weekly workflow needs.

What we're looking for:

• Mastery of Native Tools: You are fast and methodical when working on creating prompts for generative AI images.

• Analytical Mindset: You are not afraid of retention graphs. You understand that a good design is one that works based on data, not just one that looks the prettiest.

• Clinical Eye and Visual Judgment: You have solid notions of composition, contrasts, and visual weights.

• Creative Detachment: You are capable of generating dozens of ideas and discarding them without frustration if the data shows they don't work.

• Attention to Detail: You have a trained eye for detecting oddities generated by AI and ensuring that the images shown are logically sound.

• Advanced English level

Who We're Looking For

We're looking for a true visual strategist, not just a pure creative or a pure analyst. You're a hybrid talent who understands the entire thumbnail lifecycle—from generating dozens of creative ideas with AI tools in the morning to diving into YouTube Analytics in the afternoon to understand why a specific image failed to retain viewers.

You move with speed and agility between tools, focusing on efficient workflows rather than pixel-perfect obsession. Your guiding star is always Watch Time; you know that aesthetics must serve performance and that every image must deliver on the video's narrative promise. You're resilient and professionally mature, capable of creating a high volume of designs and letting go of your favorites if the data proves they don't work.

Finally, you are genuinely curious about DIY and makers' worlds, and the fast-paced world of AI, always on the lookout for new tools and techniques that can give us an edge. You will be a key partner in our mission to optimize every video to its fullest potential.

Job conditions and perks

• A competitive salary, in the top 20% of the industry.

• Office-based work, with 1 day per week of optional work from home.

• A cool office in the Gràcia district of Barcelona, with kitchen, chill-out area, terrace, and a fun atmosphere.

• Working hours: 8:00h to 16:30h.

• 23 vacation days per year.

• Professional development and clear career growth opportunities.

• Being part of a young, dynamic, and talented team with a strong company culture.

Our culture

Check our Careers Page to read more about our company culture.

We are really looking forward to hearing from you!