Head of Growth, Japan (Series C HealthTech)

About Eucalyptus (Euc)

Good health, for life.

More than one billion people worldwide live with obesity — a key driver of preventable chronic conditions like diabetes and heart disease.

Eucalyptus is the digital healthcare company behind Juniper, one of the world’s largest weight-management programs combining:

•
clinically proven GLP-1 medication

•
personalised nutrition + movement

•
support from doctors, dietitians, coaches and pharmacists

Our published research shows that Juniper patients lose 4x more weight when combining medication with lifestyle support, compared to medication alone.

By 2026, we will support 1 million patients globally.

🇯🇵 Eucalyptus in Japan

Launched in 2024, we have already grown to ~1,000 Japanese patients. By partnering with medical institutions and government bodies, we aim to support 50,000 patients per month by 2026.

Our track record:In the UK, we scaled from 2,000 → 70,000 patients in just 18 months.

Backed by $200M+ USD in funding and triple-digit annual growth, we are building a long-term, clinically responsible healthcare model trusted by patients and doctors worldwide.

🇯🇵 Why Japan?

Obesity in Japan often goes unnoticed. While Japan is seen as a “slim nation,” the WHO defines obesity in Asian populations from BMI 25, due to increased risk of diabetes and heart disease at lower BMI levels.

Every year, 20% of adults in Japan are informed of obesity indicators during health checks — yet few receive sustainable support.

Meanwhile, GLP-1 medications are frequently used by beauty clinics for patients who may already be within a healthy weight range.

Eucalyptus exists to bring:

•
clinical precision

•
ethical prescribing

•
affordable access

•
zero shame, zero judgement care

Our mission is simple:Help people enjoy the next 30–40 years of life with true health, vitality, and confidence.

🌿 The Challenge

Most marketers in 2026 are playing it safe creatively — and are frankly cowards — afraid to push a bold message, confidently to many eyeballs. Getting people to proactively engage with their health is one of the most difficult challenges in the world, and we are looking for someone who is not afraid to say the hard things in an openly challenging way that inspires people to take action.

🌿 About the Role: Head of Growth, Japan

We’re looking for a bold, strategic Head of Growth to accelerate one of Eucalyptus’ fastest-growing brands in Japan.

You will own:

•
full-funnel growth (brand → performance → lifecycle → creative)

•
a team of 2–5

•
an eight-figure USD annual budget

•
the mission to scale from 1,000 → 50,000 patients per month by 2026

You will:

•
Drive the full growth strategy across creative, performance, PR, CRM and brand

•
Manage capital allocation and optimise acquisition cost at scale

•
Build and lead a high-performing local team

•
Deliver trusted, culturally resonant messaging for Japanese consumers

•
Work cross-functionally with Product, Operations, and Clinical teams

•
Report directly to the General Manager Japan, with support from global functional leads

🌿 Who You Are

Experience

•
10+ years in high-growth marketing, performance or growth (agency or D2C/e-commerce)

•
Deep understanding of Japanese consumer behaviour

•
Strong leadership experience — growing teams, coaching talent, setting performance standards

•
Confident directing creative that stands out in a conservative market

•
Strong analytical, operational and financial skills

•
Fluent, clear communicator (Japanese essential; English a plus)

Mindset

•
Ownership mentality — you lead the mission, not just tasks

•
Ambitious and impact-driven — energised by big, meaningful goals

•
Calm under pressure — thrives in fast, high-growth environments

•
Curious, reflective, and data-driven

•
Creative yet rigorous — unafraid to push boundaries responsibly

🌿 Why Join Eucalyptus?

Raise the bar

Work with global experts in Japan, Australia, the UK and Europe in a team that values quality, innovation and integrity.

Accelerate your career

Access to professional development budgets, mentoring, cross-market collaboration, and opportunities to grow into global roles.

Community & wellbeing

Join a mission-driven company with social connection, wellness initiatives, and a strong culture of support.

Inclusive by design

We welcome applicants of all backgrounds. Please let us know if you need any adjustments during the interview process.