Open to opportunities

Sergio Rúa

@sergiora

Lifecycle marketing professional at Nielson Marketing who raised open rates from 26% to 39% through segmentation and personalization.

Colombia

Message

At Nielson Marketing, I lead lifecycle marketing and audience engagement for U.S.-based B2B clients. I developed segmented email journeys and optimized onboarding communications, increasing open rates from 26% to 39% and lead-to-demo conversion by 18%.

At Tuya S.A., I designed marketing strategies for credit lines and product launches, using Marketing Cloud automation and dynamic content across email and app communications. I also developed a customer preference center and A/B tests for email, SMS, and push notifications.

At Dentsu Medellín, I contributed to growth initiatives across acquisition, activation, engagement, and retention. Audience-focused messaging and testing helped lift email open rates from 18% to 26%.

Earlier, I created SEO-focused content at Yuxipacific, where I increased apex.sh landing page traffic by 25% and contributed to growing organic traffic from 500K to 2M monthly visits. My work spans lifecycle communications, content, and performance analysis across B2B and B2C environments.

Experience

Work history, roles, and key accomplishments

Current

Email Marketing Direct

Current

Nielson Marketing

Jan 2025 - Present (1 year 10 months)

Led lifecycle marketing and audience engagement initiatives for U.S.-based B2B clients, supporting lead generation, retention, and long-term customer growth. Increased open rates from 26% to 39% through segmentation and personalization, and improved lead-to-demo conversion by 18%.

Email Marketing Lifecycle Marketing Audience Segmentation Personalization A B Testing GA4 Google Tag Manager Performance Analytics Copywriting

Social Media Manager

Mammoth Marketing Agency

Jan 2025 - Feb 2026 (1 year 1 month)

Developed content strategies for 27 home service brands, transforming technical expertise into engaging educational and entertainment-driven content. Increased engagement by 45% through audience-focused content experimentation and optimization.

Content Strategy Social Media Management Audience Engagement Content Calendar Storytelling Trend Analysis Collaboration

Growth Marketer – Digital Strategist

Dentsu Medellín

Sep 2022 - Sep 2025 (3 years)

Contributed to growth marketing initiatives across acquisition, activation, engagement, and retention stages. Improved email open rates from 18% to 26% and increased user activations by 2% through targeted optimization.

Growth Marketing Digital Strategy Consumer Behavior Analysis Audience Segmentation Email Marketing Lifecycle Communications Social Listening Performance Analysis Experimentation

Digital Marketer

Collective Conscience

Nov 2023 - Dec 2024 (1 year 1 month)

Led digital marketing initiatives focused on audience growth, thought leadership, and environmental advocacy. Increased engagement rates by 15% and click-through rates by 20% through segmentation and data-driven testing.

Digital Marketing Email Marketing Social Media Webinar Promotion Livestorm Content Repurposing Audience Segmentation DataDrivenTesting

E-Commerce

Tennis S.A.

Jun 2022 - Sep 2022 (3 months)

Directed promotional strategy for E-Commerce across Colombia and Ecuador, increasing sales and brand recognition. Achieved a 5% increase in conversion rates over two months through trend analysis and omnichannel strategy.

Ecommerce Promotional Strategy Market Analysis Omnichannel Strategy Conversion Rate Optimization

Marketing

Tuya S.A.

Jul 2018 - Jun 2022 (3 years 11 months)

Designed and led marketing strategies for credit lines, enhancing email marketing contactability and orchestrating new product launches. Reduced app abandonment by 30% and increased credit card placements through A/B testing and preference center development.

Marketing Strategy Email Marketing Marketing Automation Marketing Cloud A B Testing SMS Marketing Push Notifications Preference Centers Data Analysis Mobile App Marketing

Marketing

Chef Company

Aug 2015 - Jul 2018 (2 years 11 months)

Designed and implemented strategic email marketing plans, executed IP warm-ups for IBM Marketing Cloud, and created automation flows for Bancolombia. Achieved a 25% rise in sales for Bancolombia cards and a 15% sales increase for new businesses through digital channel strategies.

Email Marketing Marketing Automation IBM Cloud IP Warm Up Facebook Ads Google Ads SEM SEO A B Testing Segmentation Data Analysis

Content Writer

Yuxipacific

Jul 2014 - Jul 2015 (1 year)

Created content strategies and long-form content assets including user manuals, blog articles, landing pages, and email campaigns. Increased apex.sh landing page traffic by 25% and contributed to scaling organic traffic from 500K to 2M monthly visits.