People & Culture Manager | Scale-Up Growth into US, UK & Asia

Your first hire is you.
Most HR roles hand you a function to maintain. This one is the moment a fast-growing business makes people a specialist function in its own right, and you’ll be the one to lead it.

The business
A Melbourne-based, venture-backed ad tech scale-up. Its award-winning technology is used by global brands and works with some of the world’s biggest media and tech platforms. It recently closed a capital raise backed by a US investor and is now expanding into the US, the UK and Southeast Asia. Experienced senior leaders are being hired right across the business.

No ad tech background? That’s fine. This role is about building HR in a fast-growing business, not knowing the industry.

The opportunity
Headcount is heading from around 30 to 80+, with hiring both locally and overseas to support the global expansion. Like most successful scale-ups, the business has reached the point where key functions move from shared responsibility to dedicated specialists, and People & Culture is one of the first. Strong foundations are already in place. Your job is to take the function to its next stage: assess what’s there, decide what’s needed for international scale, and build it yourself, so it holds up at this stage of growth and the next.

What you’ll do

Own HR end to end: policy, contracts, ER, performance and engagement

Build scalable foundations,



including HRIS, payroll, onboarding and people data

Drive hiring for around 50 roles and personally lead senior hires

Set up consistent, compliant people practice across Australia, the US, the UK and Asia with EOR and local partners

Advise the founder and leadership team as a steady, trusted voice

What you’ll bring
Scale-up experience matters far more than sector. Whether you’ve built HR in SaaS, fintech, e-commerce, media, gaming or any other rapid-moving business, if you’ve grown a people function alongside a company that was scaling quickly, we want to hear from you.

A track record of building HR in a startup or scale-up through growth

Experience supporting people outside Australia (US, UK or Asia) or working with EORs and offshore teams

A hands-on approach: you’ve implemented systems, policies and processes yourself

Strong recruitment experience, including senior roles

Composure with complex ER matters

The confidence to challenge leadership, and the judgement to know when to do it

Exposure to tech, media or digital businesses is a bonus, but not essential

What’s in it for you

- Ground-floor ownership with real influence at founder and leadership level
- Global scope from day one
- A role that grows with the company
- Competitive senior package
- Hybrid working from an inner-city Melbourne office

📌 People & Culture Manager | Scale-Up Growth into US, UK & Asia (Melbourne)
🏢 Brennan Sourcing Pty
📍 Melbourne