AVAILABLE FOR NEW PROJECTS
15+ years building brands and campaigns with measurable results for clients like Amazon and The New York Times, across the US, Europe and LATAM.
15+
years in B2B/B2C marketing
3
regions: US, Europe, LATAM
2
native working languages
I've managed enterprise accounts like Amazon (US/UK) and The New York Times. Today I'm Head of Marketing at a boutique B2B tech agency, integrating AI (Claude, ChatGPT, Notion AI, Canva AI) into every process. Based in Madrid.
Each pillar solves a different need. Work with one, or combine them as your business grows.
A glimpse of the brand work and industry presence behind these results: GBH's website and campaigns.
"Mariel is an exceptional talent: smart, diligent, direct and responsible. While I supervised her, she accomplished remarkable transformations in our marketing department, collaborating across teams so projects ran like a Swiss clock."
Jose Bonetti
CEO/COO at GBH (direct manager)
"Mariel is a very reliable person who always hits her goals. After moving into Digital Marketing, she achieved excellent results with the digital brand, drawing on a strong understanding of operations to highlight the value of our services."
Sherley Brito
Senior Project Manager, former colleague at GBH
"She's that one team member you can trust with any task without a second thought, fully expecting her to deliver without breaking a sweat. She combines attention to detail, organization and strong time management."
Ginifsa De La Cruz
Creative Project Manager / Digital Producer (direct manager)
"Disciplined, goal-oriented, confident, proactive: she makes things happen no matter how difficult they seem. She's an A-team player, and working alongside her is a treat."
Angel Adames
Head of DevOps
Four real projects, with the challenge, approach and measurable result behind each one.
Designed and managed a LinkedIn Ads campaign for a B2B technology company, defining segmentation, creatives, and offer. The result: a steady flow of 20 high-value qualified leads (MQL) per month, handed directly to the sales team with the context needed to close.
Strategy and execution of a Meta Ads campaign (Facebook and Instagram) focused on lead capture, from campaign structure to creative and audience optimization. Result: 50 qualified leads (MQL) generated for the business.
Content strategy and full social media management for a brand, with an editorial calendar, formats, and tone of voice of its own. The LinkedIn profile grew 150% and the Meta profile 80%, both organically, with no paid spend.
Design and copywriting of email marketing campaigns, from contact segmentation to content and calls to action. The campaigns reached a 30% click rate, well above the industry average.
I've spent 15+ years leading brand strategy, content, campaigns and events across the US, Europe and LATAM, managing enterprise accounts like Amazon and The New York Times. Today I'm Head of Marketing at a boutique B2B tech agency, where I integrate AI tools into every workflow. I'm bilingual in Spanish and English, working from Madrid with teams around the world.
Tell me what you're working on and I'll get back to you within 48 hours with next steps.
I work in brand strategy, content strategy, social media management and paid media for B2B and B2C companies. I also coach junior marketing teams and take on fractional leadership roles.
Yes. I work as a fractional Head of Marketing, Marketing Director, Marketing Account Director, or Marketing Project Manager, depending on what a company needs at a given stage.
Yes, mentoring and coaching junior marketing teams is part of my fractional and consulting work, alongside hands-on strategy and execution.
I've worked across the US, Europe and LATAM, managing enterprise accounts including Amazon and The New York Times, with 15+ years of experience in B2B and B2C marketing.