Prompt Engineer

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GenAI Artist (Hands‑On)
We are looking for a  GenAI Artist  to join our multidisciplinary creative and production team in Madrid. The candidate will develop a wide range of still and motion assets across digital, social, print, OOH, shopper and TV channels, responsible for generating and adapting visuals for digital campaigns, social content, online video, high‑resolution key visuals, print‑ready artwork, large‑format OOH assets, retail and e‑commerce imagery, and motion deliverables such as supers, tags and TV adaptations.

The role requires versatility in both static and moving image creation, ensuring brand consistency and seamless integration within broader campaign ecosystems.

You will do

Operate hands‑on GenAI image workflows using models such as BFL’s Flux suite, Firefly and internally trained models.

Write advanced structured prompts using internal libraries and style guides to ensure consistent, controlled results.

Assess and perform visual QA on outputs, curate selects and collaborate with Creative Directors to refine aesthetic direction.

Contribute to prompt libraries and participate in internal knowledge sharing around prompting, style control and model nuances.

Understand and adapt to brand guidelines, narrative intent and cinematic language in image generation.

Apply production logic (lighting, lensing, composition, production design) in generative pipelines to ensure outputs feel polished and production‑ready.

Partner with Producers to ensure all assets are delivered on time, on brief and within a fast‑moving workflow.

Support static and motion deliverables across campaigns, ensuring quality, fidelity and brand alignment.

Experience

Experience working with GenAI image models and a strong visual/photographic sensibility.

Expert user of Comfy

UI and cloud‑based GenAI platforms.

Hands‑on experience building and tuning GenAI workflows to achieve predictable results.

Understanding of training techniques, foundational model biases and how to leverage or bypass them to achieve the desired image.

Solid knowledge of cinematic lighting, composition, lensing and production‑ready aesthetics.

Experience in photography, creative retouching or art direction (required).

Experience in post‑production, VFX or design (required).

Familiarity with real‑world production processes and expectations for both still and motion assets.

Profile of the candidate

Versatile visual creator with strong craft sensibilities and attention to detail.

Collaborative, proactive and solution‑oriented mindset.

Ability to work efficiently across multiple projects in fast‑paced environments.

Strong aesthetic judgement and ability to QA generative outputs with precision.

Comfortable working within structured workflows, libraries and style systems.

Strong communication skills and eagerness to contribute to team knowledge growth.

What we offer

Indefinite contract.

Competitive salary, negotiable according to experience.

23 working days of vacation (+ 2 long weekends of your choice).

Your birthday off!

Incorporation in a multinational company with high professional, economic and financial solvency, leading innovative and large‑scale projects.

Hybrid model.

About Craft
To achieve success in the world of global adaptation and production, you need more than just clear processes and smart technology — you need true craftsmen and women: people who care deeply about their clients’ brands and who work tirelessly to drive maximum cost savings while ensuring each brand’s story remains impactful as it travels around the world. Craft currently employs over 1000 full‑time employees, operating in 120 countries with hubs in 17 strategic locations specializing in broadcast/video production, print production, digital production and global translation.

While wholly owned by McCann Worldgroup, Craft has been purposely established as an independent company within the Interpublic Group of Companies.

Equal Employment Opportunity

McCann Worldgroup is an Equal Employment Opportunity (EEO) employer. We embrace diversity in all its forms. We provide equal employment opportunities to all qualified applicants without regard to race, colour, religion, sex, sexual orientation, gender identity, national origin, age, protected veteran or disabled status, or genetic information.

If you have a disability, please let us know what adjustments you may need during the recruitment process to perform your best.

Location:

Madrid, Community of Madrid, Spain

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