Engineering Manager (Y Leader)
trendmicro
Engineering Manager - Data Science Team
flohealth· Engineering
About this role
500M+ downloads. 80M+ monthly users. A decade of building – and we’re still accelerating.
Flo is the world’s #1 health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 – and we’re not slowing down.
With 7M paid subscribers and the highest-rated experience in the App Store’s health category, we’ve spent 10 years earning trust at scale. Now, we’re building the next generation of digital health – AI-powered, privacy-first, clinically backed – to help our users know their body better.
The job
We’re hiring a Data Science Lead in Vilnius to build and lead our Predictive Growth Optimisation team – pioneering ML models that power our user acquisition strategy, predict lifetime value, and optimise our $25M+ annual marketing spend across channels.
This role owns the strategy, development, and continuous improvement of Flo’s pLTV system - a mission-critical model reused across UA, AdTech, personalisation, and financial forecasting. That is the core of the role. Alongside it, you'll stand up a Marketing Mix Modeling (MMM) capability to measure cross-channel effectiveness and inform budget allocation, and develop the algorithms to drive real-time UA campaign management. You'll lead a team building production systems that directly impact our growth trajectory, staying as hands-on as you choose.
What you’ll do
- Lead & develop a team of 6+ ML and Backend engineers - hiring, mentoring, and setting technical direction
- Own pLTV strategy - architect and evolve our core predictive lifetime value models that inform millions in UA decisions
- Stand up MMM - build our Marketing Mix Modeling capability: adstock and saturation modelling, channel contribution, and budget allocation, calibrated against our incrementality experiments
- Power real-time campaign management - develop the algorithms that optimise our UA campaigns across channels in real time
- Build production ML systems - from real-time prediction services handling millions of daily predictions to MMM models
- Drive cross-functional impact - partner with Growth, Product, and Finance to translate business problems into ML solutions
- Shape technical architecture - guide MLOps infrastructure, monitoring, and rapid iteration cycles
- Stay as hands-on as you choose - modeling, architecture decisions, technical problem-solving; your call how deep you go.
What you bring
Technical Leadership
- 7+ years applied ML experience building and deploying models in production
- 4+ years managing technical teams (ML engineers, data scientists, or similar)
- Expert knowledge of ML fundamentals: supervised/unsupervised learning, time series; strong grounding in causal inference
- Experience with modern ML frameworks (TensorFlow, scikit-learn, CatBoost)
Growth & Product Experience
- Experience with growth analytics, attribution modeling, or marketing effectiveness
- Understanding of user acquisition funnels and retention optimization
- Comfortable translating business requirements into technical roadmaps
- Strong communication skills - can explain complex models to executive stakeholders
Production ML Systems
- Experience deploying ML models at scale
- Knowledge of MLOps practices: model versioning, monitoring, automated retraining
- Understanding of data engineering fundamentals and cloud platforms
Nice to have
- Hands-on experience building Marketing Mix Models end to end, Bayesian or regression based
- Background in consumer tech, mobile apps, or health tech
- Knowledge of privacy-preserving ML techniques and A/B testing methodology
Salary Range - gross per month (ranges may vary based on skills and experience)
€9.000—€11.000 EUR
How we work
We’re a mission-led, product-driven team. We move fast, stay focused and take ownership – from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar.
You’ll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it.
What you'll get
We support impact with meaningful reward. Here’s what that looks like:
- Competitive salary and annual reviews
- Opportunity to participate in Flo’s performance incentive scheme
- Paid holiday, sick leave, and female health leave
- Enhanced parental leave and pay for maternity, paternity, same-sex and adoptive parents
- Accelerated professional growth through world-changing work and learning support
- In-person collaboration and work in a hybrid model, with 3 days per week spent in the office
- 5-week fully paid sabbatical at 5-year Floversary
- Flo Premium for friends & family, plus more health, pension and wellbeing perks
Diversity, equity and inclusion
Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role – nothing else. We’re proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.
Frequently Asked Questions
What is the salary for the Engineering Manager - Data Science Team role at flohealth?
The listed salary for this Engineering Manager - Data Science Team position at flohealth is EUR 9K–11K. This is an full-time role.
Where is the Engineering Manager - Data Science Team position at flohealth located?
This Engineering Manager - Data Science Team role at flohealth is based in Vilnius. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Engineering Manager - Data Science Team at flohealth belong to?
This Engineering Manager - Data Science Team position is part of the Engineering department at flohealth. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Engineering Manager - Data Science Team position at flohealth?
Click the "Apply Now" button on this page. You will be redirected to flohealth's official application portal hosted on greenhouse where you can submit your application directly.
When was the Engineering Manager - Data Science Team job at flohealth posted?
This Engineering Manager - Data Science Team position at flohealth was posted on Jul 9, 2026. Apply as soon as possible — early applications are often reviewed first.
Engineering Manager - Data Science Team
flohealth · 💰 EUR 9K–11K
You'll be redirected to flohealth's official application page on Greenhouse.