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Joanna Stepien

@joannastepien

Performance Marketing Specialist who builds data-driven paid acquisition, measurement, and CRO to grow revenue and leads.

Spain

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What I'm looking for

I’m looking to lead cross-channel paid acquisition, refine measurement with GA4/GTM, run continuous experiments, and improve post-click journeys through CRO—working with teams that value data-driven marketing and performance reporting.

I’m a Performance Marketing Specialist with 4+ years of experience managing paid acquisition campaigns across Google Ads, Meta Ads, and TikTok Ads for e-commerce, marketplaces, and lead generation businesses. I combine campaign strategy, audience targeting, and performance reporting with a strong focus on measurement and continuous optimization.

I build robust measurement frameworks using GA4, GTM, and Looker Studio, then turn data into action. I manage monthly budgets up to approximately €9,000 and optimize across audiences, bidding strategies, placements, and campaign structure to improve CTR, CPC, and overall media performance.

I lead experimentation through continuous A/B testing of creatives, messaging, and audience segments to reduce creative fatigue and identify higher-performing combinations. I also focus on the post-click experience—analyzing user behavior in GA4 and Microsoft Clarity (and landing page performance) to pinpoint friction and recommend landing page and UX improvements.

Previously, I supported growth as an Engagement Lead by running Google Ads and Meta Ads campaigns and collaborating with SEO and content teams. I also worked on lead generation programs remotely, supporting HubSpot CRM implementation for lead scoring, marketing automation, and nurturing workflows—bringing a full-funnel, data-led mindset into every campaign.

Experience

Work history, roles, and key accomplishments

Performance Marketing Specialist

Ball on Top – Collectible Sports Accessories

Sep 2025 - Jun 2026 (9 months)

Built the paid acquisition infrastructure, including campaign architecture and GA4/GTM conversion tracking, and delivered performance dashboards in Looker Studio. Managed cross-channel campaigns (Google Ads, Meta Ads, TikTok Ads) with audience, bidding, and A/B testing optimization to improve acquisition efficiency and post-click performance.

Google Ads Meta Ads GA4 Google Tag Manager (GTM)Looker Studio Conversion Tracking Budget Management Audience Targeting Bidding Strategies A B Testing Creative Testing Landing Page Optimization Conversion Optimization Microsoft Clarity performance reporting

Engagement Lead

Spiritualme | Marketplace Sissoo

Oct 2022 - Aug 2025 (2 years 10 months)

Managed Google Ads (Search) and Meta Ads campaigns for customer acquisition, lead generation, and brand awareness. Planned and executed multi-channel campaigns, using GA4 to identify funnel optimization opportunities and improve performance across the acquisition journey.

Google Ads Meta Ads GA4 Creative Briefs SEO Collaboration Performance Analysis

Marketing Executive

Evolution Group FZC

Feb 2021 - Sep 2022 (1 year 7 months)

Managed Meta Lead Ads and Google Ads (Search) campaigns focused on lead generation for international education programmes and retreats. Optimized campaigns through performance analysis and supported HubSpot CRM implementation for lead scoring, marketing automation, and lead nurturing workflows.

Meta Ads Google Ads Lead Generation Campaign Optimization performance reporting HubSpot CRM Lead Scoring Marketing Automation Lead Nurturing

Partner Engagement Executive

Booking.com

May 2017 - Dec 2020 (3 years 7 months)

Managed a portfolio of accommodation partners, supporting onboarding, platform optimization, and commercial performance. Advised partners on pricing and inventory strategy and used marketplace performance data and operational metrics to improve partner growth and account quality.

Partner Management Accommodation Partner Onboarding Pricing Strategy Inventory Management Marketplace Visibility Marketplace Performance Analysis Commercial Relationship Management

Education

Degrees, certifications, and relevant coursework

Universidad Internacional de Valencia (VIU)

Master's Degree in Digital Marketing & Data Analytics, Digital Marketing & Data Analytics

2024 - 2025

Master's degree in Digital Marketing & Data Analytics with coursework including Performance Marketing, SEO & SEM, Data Analytics, Marketing Automation, and Conversion Rate Optimisation (CRO).