Experience

Sr. Strategist October 2025 - Current

DAVID, New York

Clients: IKEA | HUGGIES | PULL-UPS | DEPEND | NEW BUSINESS

• Owns strategic leadership for client brands, shaping positioning, messaging, and long-term brand vision.

• Crafts compelling creative briefs and POVs that unlock strong ideas and keep work relentlessly on strategy.

• Partners with Creatives to push thinking, pressure-test ideas, and turn insights into breakthrough work

• Supports new business efforts by contributing to pitch strategy, narratives, and strategic frameworks

• Brings in office treats, hope you like banana bread!

Strategist February 2022 - September 2025

GUT, New York (former MIA & LA)

Clients: P&G | diablo 4 | Stella Artois | NEW BUSINESS| diablo 4 | Overwatch 2 | DoorDASh | HULU | Verizon | Estrella Jalisco | Stella Artois | NEW BUSINESS

• Won a Grand Prix in WARC Global Awards for Effectiveness in Path-to-Purchase for DoorDash’s Self-Love Bouqet and a Grand Prix at Cannes in PR—the first two for the LA office.

• Won a Gold and Bronze at the US Effies in Seasonal Marketing and Omi-Channel Shopper Solutions for DoorDash’s Self-Love Bouquet.

• Won a Gold at WARC North America in Instant Impact for DoorDash’s Kids Currency.

• Won a Silver at the US Effies in Seasonal Marketing for DoorDash’s Bouquets for Living Men.

• Won a Silver at WARC North America in Instant Impact for DoorDash’s Bouquets For Livng Men.

• Led culture-driven strategy across client briefs and proactive initiatives, translating cultural insights into clear strategic direction and POVs

• Acted as the sole strategist for the LA office, owning strategic oversight and contributing to 6 awards, including Effies US and WARC awards, in under two years.

• Helped launch two new offices by supporting new business pitches and high-impact one-off projects that converted into new client relationships

• Contributed to pitch and client work through research, brief development, territory creation, creative reviews, and presentation storytelling

• Partnered across disciplines and integrated agency teams to align strategy and deliver against client business objectives

• Authored award-winning Effies and WARC case studies, elevating strategic thinking into compelling, results-driven stories

Junior strategist | April 2021 - JAnuary 2022

Strategic Planning Intern | January 2021 - March

GUT, Miami, FL

Clients: Activision Blizzard | verizon | VISIBLE MOBILE | POPEYES | MICHELOB ULTRA | PHILADELPHIA CREAM CHEESE | vital farms | WHATSAPP | STELLA ARTOIS | ESTRELLA JALISCO | GET YOUR GUIDE | TAGLINE

• Lead strategy development and briefings for existing and new clients, harnessing insightful conclusions, including proactive and client briefs.

• Acted as social strategist for social AOR Account, increasing content engagement over 8 months using cultural conversations.

• Supports a bi-weekly gaming & insights report by crafting strategic implementations across all brands.

• Lead and participated in quantitative research initiatives through conducting VOX Pop interviews and focus groups and designing questionnaires.

Copywriting & Content Intern June 2019 - August 2019

Mascola Group, New Haven, CT

• Researched and compiled client brand guidelines to facilitate cohesive content creation.

• Crafted unique content for company B2B and Destination & Lifestyle blogs.

• Wrote copy for various client projects.

• Conducted rebranding surveys.

Awards

Rising to the top honoree Campaign us’ 2024 inspiring women

The "Rising to the Top" category highlights women in the industry who show great promise within their first 5 years in advertising.

Silver EFFIE SEASONAL MARKETING - DOORDASH Bouquets For Living Men Effie awards US 2025

Silver Instant Impact - DOORDASH Bouquets for living men WARC AWARDS NORTH AMERICA 2025

Bronze Brand Engagement - Doordash Bouquets for living Men Cannes lions international festival of Creativity 2o24

Bronze Brand experience - doordash bouquets for living men Cannes Lions International Festival of creativity 2o24

bronze brand experience - diablo iv Blood Harvest Cannes Lions International Festival of Creativity 2o24

Gold Instant Impact - DOORDASH Kids Currency WARC AWARDS NORTH AMERICA 2024

Gold EFFIE SEASONAL MARKETING - DOORDASH SELF-LOVE BOUQUET Effie awards US 2024

Bronze EFFIE OMni-channel marketing - DOORDASH SELF-LOVE BOUQUET Effie Awards US 2024

Grand Prix path to purchase - doordash self-love bouquet WARC awards for effectiveness global 2023

Grand Prix PR - doordash self-love bouquet Cannes Lions International Festival of Creativity 2023

Best product launch of the year - popeyes we come in piece adage creative marketing 2022

Education

Miami Ad School Europe, Miami, FL | 2023

Strategic Planning Certificate

Studied a wide range of strategy skills during an 8-week professional program 

Florida International University, Miami, FL | 2021

Mass Communications M.S.; Emphasis: Global Strategic Communication - Creative Track

Partnership with Miami Ad School

Miami Ad School, Miami, FL | 2021

Strategic Planning Certificate

Enrolled in classes focusing on topics such as social media, story writing, video storytelling, User experience, Digital Campaigns, media, and thinking strategically.

Strategic Planning Bootcamp

Participated in an 11-week strategy-intensive boot camp. Developed skills in research Design, identifying the problem, Deck Building, Consumer journey, brand architecture, communication planning, new business pitching, measuring campaign impact, and campaign pitching.

Partnership with FIU

Marist College, Poughkeepsie, NY | 2016-2019

Business Management B.S.; Emphasis: International Business and Marketing; Global Studies Minor

Lorenzo de 'Medici Institute, Florence, ITaly | 2015-2016

Academic year abroad during first year of college with extensive studies in Italian language and culture.

Skills

Creative Brief Writing

Gaming insights

Social Media

Copywriting

Cross-Cultural Communication

Branding

BrandWatch

Infegy Atlas

collaboration

Communication Planning

Tierney is an exceptional strategist that continues to surprise with outstanding ideas, phenomenal execution, and strong advocacy for the end-user. She dives into research to identify the audience challenges, learns about the problem space, and uses design thinking methods to recommend thoughtful solutions. She is extremely user-centered, thoughtful, and strategic. I was truly impressed by Tierney's work ethic, creativity, and excellent presentation skills. Would strongly recommend her, feel free to reach out if you have any questions!

Indre Putrimaite: UX Lead, Google

Tierney is a passionate individual whose charisma and unique personality will add tremendous value to any team. She manages to create strategies with compelling storytelling, her research methods and her insights are always spot on. I have no doubt Tierney will develop into a great strategist, anyone would be lucky to have her in their ranks.

Angel Van Der Biest: Social media expert, netflix

Tierney is an incredible strategist.
She is brave, and insightful. She is quick, and thorough. She is a big thinker, and detail oriented.
She elegantly pushes others - at any level - to think further, while also making them smile broader.
She adds enormous value to every project she touches, and is an absolute pleasure to work with.
I would - absolutely - jump at the opportunity to work with Tierney again.

Pablo Rosas: Executive director of strategy, attn:

If you are looking for a traditional strategist, don't look to Tierney.
If you're looking for uninspiring briefs, don't look to Tierney.
If you’re looking for someone to just do the job, don’t look to Tierney.
If you're looking for campaigns with no results, don't look to Tierney.
If you're looking to lose at awards shows, don't look to Tierney.
If you're looking for someone who thinks strategy matters more than anything, don't look to Tierney.
If you’re looking for someone who won’t push you or question you, don’t look to Tierney.
Also, what a great human being.

Matías candia: Group strategy director, Gut