Cacao Mobile

We are Cacao Mobile. For over 10 years, we have been building mobile applications in Health & Wellness, Entertainment, and Utilities, reaching thousands of users worldwide.
 

We are currently looking for a Machine Learning Specialist for a part-time, project-based collaboration (4 hours per day).
 

About the project:
A mobile application that measures heart rate and heart rate variability (HRV) using PPG technology.
 

What you’ll be doing:
- Develop and improve models for blood pressure prediction based on PPG;
- Fine-tune and optimize models on limited and noisy data (~3k signals);
- Improve prediction quality (including for calibrated users);
- Signal processing (filtering, transformations, feature engineering);
- Work on tasks without explicit labels (clustering, PCA, pattern discovery);
- Solve additional tasks on the same signal (stress, energy, etc.);
- Develop algorithms and personalized user baselines;
- Conduct research and analyze new approaches.
 

What will help you succeed in this role:
- 1+ year of hands-on experience in Machine Learning;
- Strong background in signal processing;
- Experience working with noisy real-world data;
- Experience in supervised and unsupervised learning;
- Experience working with incomplete / imperfect labels;
- Ability to solve open-ended problems;
- Research mindset (working with papers, analyzing approaches);
- Nice to have: experience with PPG or understanding of blood pressure.
 

What you’ll get from us:
- Experience working in a product team focused on scaling;
- Opportunity to boost your professional skills within a like-minded team;
- Creative environment, transparent processes, minimal bureaucracy;
- Access to all necessary tools and services;
- Fully remote work.

We are Cacao Mobile. For over 10 years, we have been building mobile applications in the Health & Wellness, Entertainment, and Utilities categories, attracting thousands of users worldwide.
 

We are currently strengthening our team and looking for a Senior User Acquisition Manager — a professional with strong expertise in traffic acquisition within Health, Utilities, or AI Chat applications.
 

Key responsibilities:
- Manage the full lifecycle of advertising campaigns: planning, launching, optimizing, and scaling;
- Analyze user acquisition funnels — from click to paying user;
- Continuously research the market and competitors to identify best practices.
 

What will help you succeed in this role:
- 3+ years of experience running Google, Meta, or ASA campaigns for Health & Wellness or Utilities apps with a subscription model;
- Experience launching apps from scratch and bringing them to profitability;
- Strong understanding of performance marketing metrics: CPI, ROAS, LTV, CR, CPT, etc.;
- Confident use of tools such as Applovin, Mintegral, Meta Ads, Google Ads, TikTok Ads, Unity Ads, AdJoe, and others;
- Strong self-management skills and readiness to take ownership of results.
 

What we offer:
- Experience working in a product team focused on scaling and growth;
- The opportunity to boost your professional skills in a team of like-minded specialists;
- Open and creative culture with transparent processes;
- Access to all the tools and services needed for effective work;
- Fully remote work format.
 

Our hiring process:

- HR interview
- Technical interview