International Partnerships · Growth Marketing · Market Entry

International partnerships & growth marketing.

I help organisations grow in new markets by building international partnerships and running data-driven campaigns. 15+ years at Nike, YMCA and UPakWeShip across Spain, the Netherlands, the UK and Mexico. I speak four languages.

Rotterdam · EN · ES · NL · FR
Portrait of Elda Calixto
Open to new opportunities

Partnerships Manager · Partnerships Coordinator · International Marketing Manager · Growth Marketing Specialist

Rotterdam, Netherlands · International scope

25→70Strategic partnerships expanded
+50%Donations through international campaigns
52Retail stores launched internationally
What I bring

Three things I do well, backed by results.

15+ years in international roles at Nike, YMCA and UPakWeShip, now focused on international partnerships and growth marketing in Europe.

01 · International partnerships

I build partner networks that bring in money

At YMCA I grew strategic partners from 25 to 70 and raised donations by 50% through international campaigns.

02 · Market entry

I help brands launch in new countries

At Nike I supported 52 new store openings across Spain, Portugal and Russia, including the first 20 in Russia.

03 · Growth marketing

I turn customer trust into new demand

Reviews, PR, email and paid channels, measured in GA4 and HubSpot. I took UPakWeShip's Google reviews from 2 to 150+.

Target roles
Partnerships Manager · Partnerships Coordinator · International Marketing Manager · Growth Marketing Specialist / Manager
Languages
English · Spanish · Dutch (B2) · French (intermediate)
Based in
Rotterdam, Netherlands · open to hybrid & remote
Work authorisation
EU citizen · Dutch passport
Availability
Available now
Career impact

Evidence, not adjectives.

Results from roles in international partnerships, customer engagement, PR and market expansion.

2008Nike · 52 stores2015YMCA · 25 partners201870 partners · +50% donations2019+40% sales via PR20252→150+ reviewsCUMULATIVE INTERNATIONAL IMPACT →

YMCA · Partnerships

25→70

Problem: funding depended on a small partner base. Action: I built business, fundraising and cultural partnerships across countries. Result: 70 partners and +50% donations.

Nike · Market expansion

52 stores

Problem: fast retail roll-out in new markets. Action: I coordinated accounts and logistics with partners. Result: 52 stores opened and delivery delays cut by 40%.

UPakWeShip · Reputation

2→150+

Problem: almost no online proof for a trust-based service. Action: I set up a review and local-marketing routine. Result: 150+ Google reviews.

YMCA Scheveningen · PR

+40%

Problem: programmes weren't reaching enough people. Action: I ran PR, trade shows and outreach, and repositioned the offer. Result: 40% sales growth.

01Professional experienceRoles · Employers · Achieved career results
Employment history

Where I worked and what I achieved.

A concise view of the international roles that shaped my approach to marketing, partnerships and growth.

Career evidenceSelected achieved results
2→150+Google reviews
25→70Partnerships
+40%Sales growth
52Stores launched
2025 — NOW

Independent Marketing Consultant

Freelance · Rotterdam / remote · from mid-2025

Digital campaigns across social, email and local media, supported by market research, lead generation and AI-enabled content workflows.

2019 — MAR 2025

Import Coordinator

UPakWeShip International Moving

Structured US-to-Europe workflows, directed marketing activity and grew Google Business reviews from 2 to 150+.

2015 — 2018

Policy Officer · Communications & Partnerships

YMCA · International

Managed international partner relations and communications, and co-organised conferences and leadership programmes with 4,000+ participants.

2019

PR Specialist

YMCA Scheveningen · Netherlands · alongside UPakWeShip

Supported 40% sales growth through PR campaigns, trade shows, community outreach and program repositioning.

2008 — 2011

International Account Manager

Nike · Hilversum

Supported expansion with 52 new stores across Spain, Portugal and Russia, including the first 20 stores in Russia.

International footprint

Lived and worked in four countries.

I have lived and worked in Spain, the Netherlands, the United Kingdom and Mexico—experience that shapes how I connect with audiences, teams and markets across cultures.

MXESNLUKMARKETS · MX / ES / NL / UK — LIVED, WORKED, LAUNCHED
Plaza Mayor in Valladolid, SpainPHOTO ↗
ES
Valladolid City CentreSpain · Lived + worked
Erasmus Bridge in Rotterdam, the NetherlandsPHOTO ↗
NL
Erasmus Bridge, RotterdamThe Netherlands · Lived + worked
Cardiff city centre in the United KingdomPHOTO ↗
UK
Cardiff CityUnited Kingdom · Lived + worked
Polanco skyline in Mexico City, MexicoPHOTO ↗
MX
Polanco, Mexico CityMexico · Lived + worked
International events

Conferences and partner events I helped deliver.

Conferences, trade shows, cross-cultural workshops and networking programs—where partnerships start and international growth becomes tangible.

Elda Martinez as an exhibitor at the Women in Tech stand, Data Expo Netherlands
Exhibitor · NetherlandsData ExpoRepresenting Rotterdam Women in Tech
Poster for the 34th Annual NAYDO Conference on YMCA Philanthropy, Atlanta 2015
Conference · Atlanta, USANAYDO 2015YMCA USA, Canada & Mexico philanthropy conference
Large networking reception of conference delegates seen from above
Networking reception4,000+ participantsConferences and leadership programs
Panel of four speakers on stage at a YMCA conference
Leadership panel25→70 partnersBusiness, fundraising and cultural partnerships
Two speakers on stage during a YMCA conference session
Stage session+50% donationsFundraising and stakeholder engagement
Audience watching a YMCA presentation at an international conference
Plenary presentationInternational programsCross-cultural youth and community initiatives
03Recent projectsIronhack AI-Driven Marketing Bootcamp projects
Recent projects

Applying AI-driven marketing to real business problems.

Projects developed during the Ironhack AI-Driven Marketing Bootcamp: two live digital experiences and one clearly labelled strategy project. Campaign targets are separated from career results.

LIVE WEBSITE · 01

Biz Growth Hub

One clear digital path for entrepreneurs in the Netherlands—from positioning and discovery to lead capture.

Campaign modelProjected targets
112Leads / month
€3.4KRevenue / month
2.8×ROAS
Visit live website ↗
Biz Growth Hub website homepage showing its dark interface and introductory campaign video
Behind the build

Biz Growth Hub campaign system

Helping entrepreneurs in the Netherlands move from fragmented guidance to a clear path to action — a full campaign from positioning to automation.

Growth strategyNetherlandsIronhack AI-Driven Marketing Bootcamp
Projected campaign targets
€3,400Monthly revenueProjected target
112Monthly leadsProjected target
2.8xROASProjected target

Projected campaign targets from the strategy model — not achieved results.

From customer journey to measurable campaign

Journey drop-offs informed the channel plan, message-matched landing experience and stage-based HubSpot nurturing. Make routes leads and GA4 closes the measurement loop.

Ironhack AI-Driven Marketing Bootcamp project · GA4 · HubSpot · Make · Netlify

LIVE WEBSITE · 02

Paw Balance

A trust-led pet-care experience designed to support discovery, booking and long-term customer relationships.

Acquisition modelProjected targets
1.5KLead target
+25%Booking target
3Journey stages
Visit live website ↗
Paw Balance website homepage showing its pet-care service and dog photography
Live website · Project 02

Paw Balance — Project details

Pet-care website strategy, customer journey, UX and acquisition model.

Project context

Pet-care service platform

A live digital concept for busy urban pet owners who need a simple, reassuring way to understand services and move toward booking.

Challenge

Turn trust into action

Pet care is personal. The experience needed to establish credibility quickly while keeping services, pricing and the next step easy to find.

My contribution

Strategy, UX and website build

Structured the content journey, clarified the service proposition and created the responsive website experience around discovery, reassurance and booking.

Key deliverables

Service journey and retention model

Homepage, service and price navigation, trust messaging, booking calls to action, promotional offer and a three-stage acquisition model.

Ironhack AI-Driven Marketing Bootcamp project · Website strategy · UX · Acquisition journey · Netlify

STRATEGY WORK · 03B2B growth strategy

IamExpat

Turning a broad expat audience into a structured B2B journey for wellness partner acquisition.

Approach

Built a TOFU-MOFU-BOFU nurture model with CRM segmentation, automated email journeys and stage-specific KPIs.

Project contextIronhack AI-Driven Marketing Bootcamp project

A B2B growth concept connecting IamExpat's international audience with institutional wellness partners.

My contributionFunnel and lifecycle strategy

Defined audience stages, CRM segments, nurture logic, email touchpoints and the KPIs needed to evaluate movement through the funnel.

Key deliverablesAcquisition system

Partner targeting framework, TOFU–MOFU–BOFU journey, automated nurture map and stage-specific measurement plan.

MeasurementStrategic targets—not results

A target universe of 500 institutions with full-funnel KPIs designed for awareness, nurturing and partner conversion.

500 institutions targetedFull-funnel KPIs

Ironhack AI-Driven Marketing Bootcamp project · Strategic target · HubSpot · Email segmentation · CRM automation

Capabilities

Strategy with hands-on execution.

A toolkit spanning international partnerships, analytics, acquisition, content, CRM and automation.

Marketing & digital toolkit

International PartnershipsPartner & Alliance DevelopmentGrowth StrategyGA4Google AdsLooker StudioHubSpotSEOSEMrushPaid SocialMake AutomationMarketing FunnelsContent StrategyStakeholder ManagementCross-cultural Communication

Education & certifications

AI-Driven MarketingIronhack · 2026
Google Analytics CertificationGoogle
Google Ads CertificationGoogle
Inbound CertificateHubSpot
MSc MarketingUniversity of South Wales
Sustainable EconomyHarvard University
Let's connect

Hiring for a partnerships role?

I'm looking for Partnerships Manager or Partnerships Coordinator roles, and international marketing or growth marketing roles where partner networks drive the results. Based in the Netherlands, open to anywhere in Europe. Send me an email and we can set up a call.