It's a new product of a company is the 3rd largest social discovery company in the world that unites people communication through online platforms focusing on AI, game mechanics, and video streaming.

Responsibilities:

• Solving NLP problems such as summarization, classification, clustering, NER, using modern techniques including LLM;
• Participate in the full development cycle, from problem definition to implementation;
• Building a data processing and pre-training LLM pipelines for text generation, chatbot development, RAG systems;
• Developing new approaches and data partitioning processes to assess the quality of LLM performance;
• Extracting data from various sources (reading from files, APIs, databases);
• Participate in generating requirements and necessary data for model improvements;
• Implementing the model in production, supporting the model lifecycle, monitoring and updating.

Requirements:

• Experience in the role of Data Scientist/LLM engineer for more than 5 years
• Experience in Data Science related to natural language processing (NLP);
• Proficiency in Python, including NumPy, Pandas, Scikit-learn and text processing libraries;
• Practical experience in developing and implementing NLP models for classification, text clustering, NER (Named Entity Recognition), etc;
• Experience with deep learning frameworks (TensorFlow/Keras or PyTorch), including model building, training and evaluation;
• Knowledge of GPT, BERT and other Transformer model architectures;
• Knowledge of various metrics for evaluating the quality of NLP models (precision, recall, F1-score, AUC-ROC, etc.), ability to select appropriate metrics for a particular task;
• Experience in bringing models to production;
• Experience in using tools for performance and quality monitoring;
• Experience with model training: Qwen, llamaindex and Mistral.

Responsibilities:

• Develop and maintain high-performance, scalable Flutter applications for iOS and Android.
• Develop Flutter modules that can be seamlessly integrated into existing applications.
• Implement Flutter Clean Architecture, focusing on Domain-Driven Design (DDD) using BLoC or Riverpod for state management.

Requirements:

• 5+ years of experience in Flutter and Dart development.
• Strong understanding of Flutter Clean Architecture (BLoC or Riverpod State Management).
• Experience with Flutter App Development using Clean Architecture and Domain-Driven Design (DDD) with BLoC/Riverpod.
• Experience with background services and always-on location services for periodic execution, efficient location updates, and movement detection.
• Experience with Activity Recognition APIs (Google Activity Recognition for Android, Core Motion for iOS) to detect user movement using sensors.
• Proficiency in developing Live Activities and real-time updates for displaying ongoing events, such as location changes, activity status, or notifications.
• Proficiency in State Management (BLoC, Riverpod, Provider, Redux, or MobX).
• Strong understanding of modular architecture in Flutter.
• Experience with RESTful API integration, GraphQL (optional), and WebSockets.
• Familiarity with Firebase (Auth, Firestore, Cloud Functions, Push Notifications, Crashlytics).
• Experience with native integrations using Kotlin (Android) and Swift (iOS) is a plus.
• Strong knowledge of Git, CI/CD, and automated testing frameworks (Cypress, Selenium, Cucumber or other).
• Familiarity with Android Auto and Apple CarPlay integration is a plus.
• English level B2+ (work with the team in english).

Location: Warsaw, Poland

Type of Work: Hybrid (3 days in the office, 2 days remote)