Stamos Sinioris

Head of Performance Marketing & Paid Media at Nooseit

Managed €4.2M annual paid media budget across B2B and DTC lead gen campaigns; delivered 490% average ROAS. Led full-funnel strategy across paid search, paid social, display, video, programmatic and email/CRM. Optimized KPIs (ROAS, CPL/CAC, CPC, CTR, CVR, MQL→SQL, CLV, churn) with data-driven bidding and real-time adjustments. Drove SEO & UX landing page optimization, implemented GA4/GTMs, multi-touch attribution and self-serve analytics. Executed A/B/MVT testing and implemented CRM automations for full-funnel ROI attribution and customer value growth. Managed and mentored a cross-functional media team.

Paid Media Lead at Peoplecert

Defined global lead generation and direct sales campaigns across EMEA, NAmerica, LATAM and APAC; scaled annual media investment to €6M with an average ROAS of 410%. Optimized ROAS, CAC/CPL, CPC, CTR, CVR and lead quality (MQL→SQL, CLV, CLV:CAC, churn). Led creative localization, analytics tracking, and multi-touch attribution; implemented GA4/GTM and BI dashboards (Power BI, Looker).

Performance Marketing Lead at Nooseit

Scaled B2B and DTC lead gen campaigns across key channels; managed €3M in media investment with a 430% average ROAS. Implemented data-driven funnel optimization, tracking, and CRM integrations for full-funnel ROI measurement; collaborated on creative and content strategy; led structured tests to improve conversions.

Performance Marketing & Paid Media Freelancer at Self-Employed / Nooseit / Europe & USA (remote)

Implemented and optimized full-funnel performance marketing campaigns for B2B and DTC clients across sectors; managed multi-platform campaigns (Google/Meta/TikTok/YT), implemented GTM/GA4, and built self-serve dashboards. Led CRM integration and automation for lead tracking and ROI measurement; managed shopping/product feeds and transition from analytics to paid media optimization.

Media Operations & Digital Analytics Lead at Zoopla Property Group

Led Zoopla's Single Customer View (SCV) project to optimize full-funnel lead generation and reduce CAC/CPL. Coordinated cross-functional planning with marketing, analytics and data teams; implemented measurement frameworks for true ROAS and ROI attribution; supported marketing tech integration and optimization workflows.

Senior Digital Analytics and Insight Manager at Merkle

Delivered Renault’s SCV initiative for tracking full-funnel performance and reducing acquisition costs; supported paid media by building attribution models and customer data applications for targeting and personalization; led global rollout of analytics and activation tools to support campaign personalization at scale; defined measurement strategies and ROI reporting.

Digital Analytics Specialist at PharmPress / Royal Pharmaceutical Society

Managed analytics, CRO initiatives and insights for eCommerce and subscription platforms; supported optimization and reporting to drive engagement and conversions.

Digital Analytics Consultant at Stream20

Managed analytics, media monetization and campaign performance insights for top-tier advertisers; supported measurement strategy and optimization.

Digital Project Manager at Persado

Led implementation of Persado’s campaign optimization models across Skype’s global markets; supported digital project delivery and analytics.

Ad Ops & Digital Analytics Manager (EMEA) at Universal McCann

Managed campaign tracking, ad ops and digital performance reporting across Microsoft’s EMEA region; supported optimization and measurement strategies.

Digital Analytics Manager at Ptarmigan Media

Campaign measurement, analytics reporting and optimization insights for financial advertisers; enhanced data-driven decision making.

Campaign Executive at Mediaedge (MEC)

Campaign setup, delivery and reporting across paid search, display, programmatic and affiliate channels; performance optimization.

Media & Advertising Executive at SPG Media

Online research, data collection, reporting and media/advertising insights.

Head of Performance Marketing & Paid Media at Nooseit

Lead budget management (~€4.2M annual) across B2B and DTC lead gen campaigns. Designed and executed full-funnel, integrated growth strategies spanning paid search, paid social, display & video, programmatic and email/CRM. Optimized ROAS, CAC/CPL, CPC, CTR, CVR, MQL-to-SQL and CLV through data-driven bidding, funnel analytics, and real-time optimization. Collaborated on SEO & UX optimization for high-conversion assets; implemented GA4, GTM and Looker for multi-touch attribution and self-serve ROI reporting. Led a diverse team and managed third-party suppliers.

Paid Media Lead at Peoplecert

Global campaign strategy for lead gen and direct sales across EMEA, N.America, LATAM and APAC; scaled media investment to €6M with an average ROAS of 410%. Applied data-driven budget allocation, bid adjustments, and funnel insights to optimize ROI and lead quality. Localized creative in 5+ languages. Tracking and analytics via GA4, GTM; Power BI and Looker. Led A/B testing, CRM integration and cross-functional collaboration.

Performance Marketing Lead at Nooseit

Scaled B2B and DTC lead gen campaigns across key performance channels; managed €3M in media investment and achieved an average ROAS of 430%. Implemented tracking, attribution and self-serve analytics; collaborated on creative and landing page optimization. Established CRM integrations and automated campaign workflows to optimize customer metrics.

Performance Marketing & Paid Media Freelancer at Europe & USA (remote)

Implemented, managed and optimized full-funnel performance campaigns for B2B lead gen and D2C eCommerce clients across multiple industries. Platforms included Google Ads, YouTube, Meta, TikTok, LinkedIn; set up tracking with GA4/GT M and Looker; integrated CRM for full-funnel ROI measurement; managed product feeds on Google Merchant Center, Meta Commerce Manager and TikTok Seller Center.

Media Operations & Digital Analytics Lead at Zoopla Property Group

Led Zoopla’s Single Customer View (SCV) project to optimize lead generation and acquisition campaigns; cross-functional media planning tied to personalization and conversion strategy. Implemented measurement frameworks to assess campaign impact and ROAS, and supported marketing tech integration for data-driven optimization.

Senior Digital Analytics and Insight Manager at Merkle

Delivered Renault’s SCV initiative to track full-funnel performance and reduce CAC through granular optimization. Supported paid media with attribution models and customer-level data applications for targeting and personalization. Led marketing analytics tech deployment and ROI reporting.

Digital Analytics Specialist at PharmPress / Royal Pharmaceutical Society

Managed analytics, CRO initiatives and insights generation across eCommerce and subscription platforms.

Digital Analytics Consultant at Stream20

Managed analytics, media monetization and campaign performance insights for top-tier advertisers.

Digital Project Manager at Persado

Led implementation of Persado’s campaign optimization models across Skype’s global markets.

Ad Ops & Digital Analytics Manager (EMEA) at Universal McCann

Campaign tracking, ad operations and digital performance reporting across Microsoft’s EMEA region.

Digital Analytics Manager at Ptarmigan Media

Campaign measurement, analytics reporting and optimization insights for financial advertisers.

Campaign Executive at MEC

Campaign setup, delivery and reporting across paid search, display, programmatic and affiliate channels.

Media & Advertising Executive at SPG Media

Online research, data collection, reporting and media/advertising insights.

Head of Performance Marketing & Paid Media at Nooseit

Led global performance marketing and paid media strategy across B2B and DTC, overseeing a €4.2M annual budget and multi-channel campaigns (Google Ads, Meta, TikTok, YouTube, display & programmatic, CRM). Established data-driven bidding, tracking, and attribution, optimized ROAS and CAC/CPL, built GA4/GTM tracking, and guided a cross-functional team.

Paid Media Lead at Peoplecert

Directed global lead generation and direct sales campaigns across EMEA, NA, LATAM, and APAC; scaled annual media investment to €6M with an average ROAS of 410%; implemented tracking, attribution, CRM integration, and multi-language localization for campaigns.

Performance Marketing Lead at Nooseit

Scaled B2B and DTC lead generation campaigns; managed €3M in media, achieving ~430% ROAS; developed data-driven media plans, implemented GA4/GTM tracking, and integrated CRM for full-funnel attribution.

Performance Marketing & Paid Media Freelancer at Self-employed / Nooseit (Freelance)

Delivered end-to-end performance marketing for B2B and consumer brands across Europe and the USA; executed multi-platform campaigns (Google, Meta, TikTok, LinkedIn), built tracking dashboards (GA4/Looker), and established CRM integrations; supported shopping feeds and ecommerce optimization.

Media Operations & Digital Analytics Lead at Zoopla Property Group

Led Zoopla’s Single Customer View (SCV) program to optimize lead generation and full-funnel acquisition, implemented attribution ROI measurement, and aligned media plans with personalization and conversion strategies.

Senior Digital Analytics and Insight Manager at Merkle

Delivered Renault’s SCV initiative to track full-funnel performance, built attribution models and data applications for targeting, deployed marketing analytics tech (Adobe Analytics, Audience Manager, Target) for scalable personalization, and produced ROI reporting.

Digital Analytics Specialist at PharmPress / Royal Pharmaceutical Society

Managed analytics, CRO initiatives and insights across ecommerce and subscription platforms.

Digital Analytics Consultant at Stream20

Managed analytics, media monetization, and campaign performance insights across top-tier advertisers.

Digital Project Manager at Persado

Led implementation of Persado’s campaign optimization models across global markets.

Ad Ops & Digital Analytics Manager (EMEA) at Universal McCann

Campaign tracking, ad operations and digital performance reporting across Microsoft’s EMEA region.

Digital Analytics Manager at Ptarmigan Media

Campaign measurement, analytics reporting and optimization insights for top-tier financial advertisers.

Campaign Executive at MEC

Campaign setup, delivery and reporting across paid search, display, programmatic, and affiliate channels.