We are currently looking for a Senior Data Scientist who will support the product development of both our new and existing and popular products.

The position is open for remote work. Relocation to Cyprus is also possible.

What you need to join us:

• Experience in building recommendation systems;
• Experience in the full cycle of solving ML tasks: data preprocessing, algorithm selection and parameter tuning, model evaluation, visualization, and analysis of results;
• Deep understanding of recommendation systems: approaches, common issues, metrics;
  Interest in research work;
• Practical experience in conducting A/B tests and understanding the theoretical foundations;
• Proficiency in Python (core libraries and PyTorch for model development);
• Experience using PySpark, creating complex queries for processing large data volumes;
• Knowledge of classical machine learning algorithms and mathematical statistics;
• Strong math skills (linear algebra, statistics, optimization methods);
• Higher education in technical, mathematical, machine learning, or data analysis fields.
   

Our tech stack: Python3, ClickHouse, PyTorch, Jenkins, Airflow, ON.

We expect from you:

• Collect, process, and explore data;
• Generate hypotheses, create a backlog, and prioritize tasks;
• Develop recommendation models to improve product metrics;
• Test models on historical data, validate hypotheses before release;
• Integrate solutions into production services;
• Validate algorithms on real users through A/B testing;
• Interpret and analyze the results obtained.
   

We offer:

• Office in Limassol (Cyprus);
• Relocation package and visa support, opportunity to become an EU citizen;
• Health insurance after probation;
• Powerful and fast hardware, Apple devices;
• Child’s birth and birthday bonuses;
• Monthly budget for team building and corporate events;
• Free breakfasts and lunches with a wide choice of dishes.

Requirements:

• 3+ years of experience in functional testing of client-server applications;
• Experience in API testing;
• Understanding of microservice architecture;
• Knowledge of HTTP protocol;
• Experience in testing mobile applications (iOS, Android);
• Experience with Android Studio / Xcode;
• Experience with sniffer (Charles / Fiddler / Wireshark / Mitmproxy);
• Experience in maintaining test documentation (test cases/checklists).

Tasks:

• conduct functional testing of backend of our mobile applications and API;
• maintain and develop test infrastructure;
• participate in writing new automated tests and improving existing ones;
• collaborate with product teams and colleagues testers.

Would be really cool if you have:

• experience in development/support of frameworks for automated testing;
• knowledge of Java, Python, Kotlin, Groovy or any other script language;
• basic knowledge of Linux;
• work experience with Docker.

Tech stack we use:

• Jira + Confluence;
• CI-system: Jenkins;
• backend stack — Kotlin, PHP, Python, MongoDB, Redis;
• Linux, Linux shell utilities, Docker;
• automated testing: Java/Kotlin + JUnit 5.

We offer:

• Office in Limassol (Cyprus);
• Relocation package and visa support, opportunity to become an EU citizen;
• Health insurance after probation;
• Powerful and fast hardware, Apple devices;
• Child's birth and birthday bonuses;
• Monthly budget for team building and corporate events;
• Free breakfasts and lunches with a wide choice of dishes.

Currently, we are looking for Senior Backend Engineer to join our team.

Position in Limassol, Cyprus (you need to be ready for relocation).

What will you do:

• Ensuring the stability and fault tolerance of the entire backend;
• Optimization of performance and resources used by services;
• Optimization of work with databases and queues;
• Perform complex product tasks with high quality.

What we will be expecting from you:

• Extensive experience in backend development in Java/Kotlin/PHP;
• Experience with MongoDB;
• Love to write clean code, use the DDD approach and follow SOLID principles;
• Experience in building and maintaining highload systems and services.

It will be cool if you have:

• Experience with PHP.

Tech stack we use:

• Java/Kotlin + Spring + Ktor;
• DB: MongoDB, Kafka, Redis, Clickhouse, Elasticsearch, Memcached,;
• Hybrid infrastructure (own DC + Amazon AWS);
• Docker, Jenkins, Gitlab.

What we offer:

• Relocation to Limassol, Cyprus;
• Relocation package and visa support, opportunity to become an EU citizen;
• Health insurance after probation;
• Powerful and fast hardware, Apple devices;
• Child's birth and birthday bonuses;
• Monthly budget for team building and corporate events;
• Free breakfasts and lunches with a wide choice of dishes.

We use a Data-Driven approach and do lots of A/B tests to make the app as optimized and user-friendly as possible, and all decisions are made based on data and experimental results. We develop in Kotlin, using coroutines, Firebase, Jetpack and MVI architecture, Exoplayer, and Glide.

What's to be done:

• develop and improve our apps, develop new features and functionality, and track how the solutions you develop work in different countries and for different audiences, affecting millions of users;
• launch new technological services and apps around the world.

What tasks do you have to do:

• improvement of existing products;
• design and implement new features and optimize current application capabilities;
• ensuring high code quality and application performance;
• collaborate with other developers, designers, analysts, and product managers to achieve team goals;
• use of modern technologies and approaches in development, such as Kotlin, Jetpack Compose, Hilt, Coroutines, and others;
• working with version control systems (Git) and participating in the code review process;
• improvement and development of a technical analytics system for battery consumption and temperature, CPU, and RAM for early problems detection;
• experiments with push notifications and FCM;
• participation in the development and improvement of the MVI architecture. 

To join us, you need:

• have 3 or more years of commercial Android app development experience;
• knowledge of Kotlin, Java, and Android SDK;
• follow OOP and SOLID principles;
• understand and apply design patterns, MV*, and Clean architecture; 
• experience working with RESTful API, Retrofit и OkHttp;
• experience working with databases  (SQLite, Room);
• understand core principles of multithreading and asynchronous operations; 
• experience working with Dependency Injection (Hilt or Dagger);
• experience working in a product company;
• experience working in teams with code review.

We offer:

• relocation to Limassol (Cyprus);
• relocation package and visa support, an opportunity to become an EU citizen;
• health insurance (after the probation period);
• powerful and fast hardware, Apple devices;
• childbirth bonus, Birthday bonus;
• monthly budget for team-building and corporate events;
• free breakfasts and lunches with a wide choice of dishes.