Senior Media Buyer – TikTok
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Job Description
Senior Media Buyer scaling TikTok acquisition for IM8, Prenetics’ subscription health and longevity brand. Owning rules-based buying, creative testing, and blended CAC performance.
Responsibilities:
- Own day-to-day buying on IM8's TikTok Ads account and scale it into a primary acquisition channel
- Report to the VP of Growth
- Own blended new-customer CAC against Shopify as the source of truth
- Structure campaigns and ad groups across multiple prospecting lanes
- Make Campaign Budget Optimization versus ad-group-budget decisions
- Decide when to use Smart+ / Smart Performance Campaigns versus manual management
- Run testing pods with spend floors and allocate budget across lanes
- Execute daily launches, kills, scales, and budget moves under pre-agreed thresholds and triggers
- Name, explain, and log every account change
- Run structured creative testing and maintain a pipeline of hooks, formats, Spark Ads, and creator content
- Analyze hook rate, hold and completion, and CTR to distinguish creative failures from configuration failures
- Scale winning campaigns without resetting the learning phase
- Manage budget velocity, CPM inflation, audience saturation, and creative saturation
- Cross-check TikTok attribution against Shopify daily and make kill/scale decisions using matured, full-day blended CAC
- Partner with the creative team on pipeline velocity and flag creative age and fatigue
- Partner with organic/creator and TikTok Shop efforts and contribute to secondary paid-channel expansion
Requirements:
- 3–5 years of hands-on paid social media buying experience
- DTC / e-commerce fluency, including CAC, LTV, contribution margin, and blended reality versus platform ROAS
- Deep working knowledge of TikTok Ads mechanics, including learning phase behaviour, delivery concentration, bid strategies, Smart+ / Smart Performance Campaigns, attribution windows, TikTok Pixel, and Events API
- Creative-first operating instinct focused on creative volume and iteration
- Rigorous operating habits, including change logs, naming conventions, and threshold-based decisions
- Personally structured, scaled, and been accountable for $10M+/year in TikTok ad spend, or provide a clear, specific reason why that benchmark does not apply
- Based in Hong Kong or willing to relocate
- Active, fluent daily AI tool usage is mandatory
- Shortlisted candidates must complete the role-specific Beat Claude Challenge assignment
- Meta and/or AppLovin buying experience is nice to have
- Spark Ads, creator whitelisting, or TikTok Shop paid experience is nice to have
- Subscription-business and retention-aware acquisition experience is nice to have
- Health, wellness, or supplements experience is nice to have
Benefits:
- Opportunity to grow with Prenetics
- Collaborative, growth-minded work environment
- Fully remote work arrangement
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