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Sonia SerraSS

Sonia Serra

Digital Marketing | E-Commerce | SEO SEM 🎯| Web 📈

€280/day
Barcelona, ES
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sonia

I help companies gain online visibility, generate more qualified leads, and achieve their digital marketing goals. With over 15 years of experience in digital marketing, I have worked on both B2B and e-commerce projects, combining strategy with practical execution.

I have extensive experience in the design and implementation of Digital Marketing Plans (DMP), covering website creation and optimization, web audits, SEO strategies and SEA (SEM) campaigns, conversion-oriented landing page development, digital analytics, social media management, online and offline event organization, as well as planning and execution of Inbound Marketing and email marketing strategies.

In the e-commerce area, I have worked on user experience (UX/UI) and CRO (Conversion Rate Optimization) projects, always with a data-driven approach. I am accustomed to analyzing KPIs and key metrics to turn data into actionable insights that guide strategic decision-making and maximize campaign performance.

I also assist companies that want to make the digital leap: from web design in CMS, local SEO, and Google My Business management, to the creation and optimization of social media profiles and content strategies adapted to each business.

If you need me to help you generate more leads, consolidate your digital identity, or boost your business, I will be happy to hear from you.
  • Catalan

    Native or bilingual

  • Spanish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • DS Smith ePack
    E-commerce Marketing Manager
    E-COMMERCE
    August 2022 - Today (3 years and 10 months)
    Barcelona, Spain
    Development and execution of the digital marketing plan for e-commerce.
    Strategy and continuous optimization of the conversion funnel (CRO), in order to increase CR and AOV.
    Leadership of UX/UI projects to improve the shopping experience.
    Analysis, implementation, and monitoring of KPIs for strategic decision-making.
    Leadership of the SEO project for increasing traffic and channel conversion.
    Management of acquisition campaigns through Google Ads, LinkedIn, and
    Microsoft Ads.
    Management of the marketing budget and resource control.
    Google Ads SEO Audit On-Page SEO UX/UI CRO
  • Trace Software International
    Marketing Manager
    SOFTWARE PUBLISHING
    January 2018 - June 2021 (3 years and 6 months)
    Barcelona, Spain
    Definition of the Marketing strategy and creation of the Digital Marketing Plan
    (DMP) internationally. Management of the Marketing budget and resource control.
    Coordination of the marketing team.
    Analysis of KPIs and digital analytics. Optimization of the corporate website and
    landing pages, analysis, and usability.
    Creation and optimization of SEM and SEO campaigns, for web positioning
    in search engines, both organic and paid.
    Definition of email marketing campaigns and their analysis.
    Organization and planning of events and trade shows, online and offline seminars
    Email marketing SEO Audit On-Page SEO SEM CRM

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Education

  • Google Ads
    Lin3s
    2021
  • Postgraduate in Digital Analytics
    Universitat Pompeu Fabra
    2023

Certifications

  • Google Ads
    Google
    2025
  • Google Analytics
    Google
    2025

Skill set

Categories