Dinh General Hospital - embedded growth lead across 6 service lines (~1.8B VND Meta spend over 10months, ~US$70K): • Cut blended CPL 38% (612K → 380K VND; best month 268K) while growing monthly leads 71% (peak+138%) and bookings +112% on flat budget; completed patient cases roughly tripled and blended CAC fell ~64% (partly aided by implementing improved downstream tracking). • Built the end-to-end attribution framework (Messages → Leads → Bookings → Show-ups → CompletedCases) joining Meta spend with the hospital’s CRM, making marketing’s contribution to real patient volume visible and defensible to hospital leadership. • Designed and deployed the “Creative Performance Operating System” (CPOS) - an operating framework run by a 10-person cross-functional team (account, creative, media, sales, medical compliance): a 7-step creative pipeline with locked contribution ownership, an asset-ID system linking every ad across Meta, CRM, and reporting, weekly experiment cadence with explicit scale/kill rules and performance labels, a 6- dimension underperformance diagnosis (creative / media / offer / landing page / sales quality / sample size), and a permanent knowledge base of winning formulas and failed tests. Viata (European online pharmacy - viata.be / .nl / .es / .fr): managed catalog campaigns promoting 20,000+ SKUs per market across 5 European markets simultaneously, using feed automation and AI-assisted ad copy and creative variant generation.

• Managed ~US$200K/month across Google Ads, TikTok Ads, Meta, and Zalo Ads, integrated with the company CDP; team consistently hit ≥90% of sales targets for six consecutive months. • Reduced Google Ads CPL by 50% through campaign restructuring and ad-copy optimization, sustaining lead volume at lower cost. • Proposed and piloted new channels and experimental campaign types cross-functionally with sales, telesales, and academic teams - from hypothesis to budget approval to in-platform execution.

• Planned and ran paid campaigns for 20+ clients (retail, e-commerce, FMCG, finance, hospitality, energy) across the EU, Australia, and Vietnam on Google, Meta, LinkedIn, Bing, and Shopify; drove up to +35% revenue for key accounts. • Scaled a structured A/B testing program with scripts and automation, contributing to 80% growth in the agency’s PPC client base; built SOPs and trained 4 team members.

• Ran lead-generation funnels (ads, email, landing pages) for Singaporean clients in healthcare, real estate, and education; won a larger budget share through simplified campaign structure and intensive A/B testing. • Migrated client reporting to automated Looker Studio dashboards and streamlined tracking setups.

• Managed US$80K/month lead generation on Google, TikTok, and Facebook Ads; cut Google CPL 14% via restructuring and TikTok CPL 35% via creative and landing-page experiments that also lifted lead conversion rate 19%. • Owned GTM and GA4 implementation; coordinated growth vendors (Appier, Coc Coc).