Senior Media Buyer - Meta

IM8 Health; Hong Kong; Hybrid; HKD 941,000 - 1,412,000; Full time

Job summary

IM8 Health is seeking a Senior Media Buyer based in Hong Kong to own day-to-day buying on Meta, aiming for scalable performance in a fast-growing,subscription-driven health brand.

You will manage thousands of live ads, define bid strategies, and log every change to keep the account legible for teammates. This role demands AI-enabled workflows and strong discipline in testing and optimization.

Qualifications

• 3-5 years of hands-on paid social media buying.
• DTC / ecommerce fluency: understand CAC, LTV, margins.
• Deep knowledge of Meta mechanics, attribution windows and maturation.
• Based in Hong Kong or willing to relocate.

Responsibilities

• Own campaign architecture at scale across multiple prospecting lanes.
• Execute daily buying under a rules-based system with pre-defined thresholds.
• Run structured creative testing to validate concepts and protect tests.
• Scale winners without resetting the learning phase and monitor CAC.
• Collaborate with the creative team and expand to secondary channels as we scale.

Skills

Paid social buying

DTC ecommerce

Meta ads mastery

Analytics & attribution

AI-native workflow

Job description

IM8 is a next-generation health and longevity brand co-founded by David Beckham and Prenetics (NASDAQ: PRE), on a mission to make world-class nutritional science accessible to everyone. Launched in late 2024, IM8 grew Q1 2026 revenue nearly 6x year-over-year to $33.8M, and the company has raised full-year 2026 IM8 revenue guidance to $190M–$210M. Over 60% of revenue is generated outside the US. We ship to 43 countries, and our athlete partner roster includes David Beckham, Giannis Antetokounmpo, Aryna Sabalenka, Ollie Bearman, and Inter Miami CF.

We are built on science, not story — our flagship Daily Ultimate Essentials carries 90 active ingredients, we run randomized controlled trials on our products, and we hold a clinical-grade standard in a category notorious for shortcuts.

Our business is subscription at its core. Every basis point of NRR we add compounds — into LTV, into payback, into the ability to outspend everyone else on acquisition. Retention isn't a department at IM8. It is the model.

Why This Role Is Different

Most media buying roles inherit a messy account and spend years cleaning up someone else's logic. This one doesn't. At our growth rate, paid social has to scale faster than the rest of the business or it becomes the bottleneck on everything - new markets, new products, new athletes. Every wasted dollar of spend is a dollar not compounding into customer lifetime value, and on a subscription model with the LTV we're building, sloppy buying compounds against you fast. This account is already run as a rules-based system - spend frontiers per lane, kill limits, scaling ceilings, pause-don't-delete discipline, mandatory change logging, daily diagnostics. We need someone who treats a Meta account as a brand growth asset with real operating discipline, not a dashboard to babysit.

The Opportunity

We are looking for a Senior Media Buyer - IM8 Health, based in Hong Kong, to own day-to-day buying on a Meta account on track for $10M/month in spend, reporting to the VP of Growth. Thousands of live ads, multiple prospecting lanes, one explicit rules-based system that you run, improve, and answer for. Your mandate: own blended new-customer CAC against Shopify as the source of truth - not platform-attributed numbers - and make every buying decision legible, logged, and defensible.

What You'll Do

Own campaign architecture at scale

• Structure campaigns and ad sets across multiple prospecting lanes, making deliberate CBO vs ABO calls
• Run testing pods with spend floors and allocate budget across lanes with known efficiency ceilings

Execute daily buying under a rules-based system

• Make daily launches, kills, scales, and budget moves under pre-agreed thresholds and triggers
• Name, reason, and log every change so the account is legible to someone who didn't build it

Run structured creative testing

• Get new concepts to valid spend levels and protect tests from delivery concentration
• Distinguish creative failures from configuration failures - bid strategy, exclusions, broken destinations

Scale winners without breaking them

• Scale without resetting the learning phase; manage the interplay of budget velocity, CPM inflation, and audience saturation
• Cross-check Meta attribution against Shopify daily and make kill/scale calls on matured, full-day blended CAC

Partner and expand

• Work with the creative team on pipeline velocity, flagging creative age and fatigue on major lanes before performance shows it
• Contribute to expansion on secondary channels as we scale beyond Meta

What We're Looking For

• 3-5 years of hands-on paid social media buying
• DTC / e-commerce fluency: you understand CAC, LTV, contribution margin, and the gap between platform ROAS and blended reality
• Deep working knowledge of Meta mechanics: learning phase behaviour, delivery concentration within ad sets, bid strategies (cost caps, tROAS) and their failure modes, attribution windows and maturation
• Rigorous operating habits: change logs, naming conventions, threshold-based decisions - not vibes
• Based in Hong Kong or willing to relocate

Non-Negotiable

• You have personally structured, scaled, and been accountable for $10M+/year in Meta ad spend - not reported on it, owned it - or a clear, specific reason why that benchmark doesn't apply to your trajectory. If you can't make that case in a sentence, this isn't your role.

Nice to Have

• Buying experience on AppLovin and/or TikTok Ads
• Subscription-business and retention-aware acquisition experience
• Health, wellness, or supplements experience

You Must Be AI-Native

Active, fluent daily AI tool usage is mandatory, not optional. We expect you to be embedding AI into every workflow you touch on day one.

Shortlisted candidates complete a role-specific assignment, scored against a baseline we generate using Claude - same data, blind review. It covers account build, buying rules, and live diagnosis of a broken account snapshot. We care about judgment under real constraints, not portfolio decks. To advance, your thinking needs to be better than what the best AI produces. Ties don't advance.

Want to stand out? Head to our GitHub repo and submit your Beat Claude challenge: https://github.com/Prenetics/beat-claude