JustJoin.IT Hybrydowo Senior

Senior AI/ML Engineer

Altalog

⚲ Warszawa

18 000 - 22 000 PLN netto (B2B)

Wymagania

  • Python
  • Machine Learning
  • Algorithms
  • PyTorch
  • MongoDB
  • PostgreSQL
  • Docker
  • Kubernetes

Opis stanowiska

Who we are
We are a small, independent startup with our own team, decision-making, and culture, while operating within the Cyfrowy Polsat and Polkomtel Group and benefiting from its support. We build production AI/ML and data-intensive systems, including recommender systems, distributed applications, and ML-powered products. We value simple, maintainable solutions and encourage our team members to influence architectural and technological choices.
For more information please see: altalog.pl

We're looking for a Senior Software Engineer with strong Python skills and working knowledge of  AI/ML tools such as Torch and scikit-learn. Most of the work would involve data processing, integration of AI/ML models and algorithms, experiments, and some backend work.

When you apply we always respond. If you don't see the response, please check your spam folder.Our AI/ML focus:
• Recommendation systems with collaborative filtering, content-based filtering, and our own algorithms
• LLM-based content enrichment
• Vector search and retrieval

Our tech stack includes:
• FastAPI
• PyTorch
• scikit-learn
• Pydantic
• Docker and Kubernetes
• Kafka
• Redis
• MongoDB and PostgreSQL

Required:
• Valid work permit for Poland and Polish tax residency
• Good working proficiency in both Polish and English
• Looking for a long-term collaboration
• Ability to work independently with minimal supervision and a high level of self-motivation
• Comfortable working in a remote-first collaborative environment
• Willingness to contribute to and maintain a respectful and collaborative communication

Required technical skills:
• Appreciation for clean, maintainable, and well-structured code
• Strong Python programming skills
• Solid understanding of software design, algorithms, and data structures
• Experience developing software using modern AI/ML frameworks and tools (such as PyTorch, scikit-learn, TensorFlow, or similar)
• Experience building and maintaining CI/CD pipelines (GitLab CI)
• Experience developing and deploying containerized applications with Docker
• Experience with NoSQL databases, preferably MongoDB and/or Redis
• Experience with SQL databases, preferably PostgreSQL
• Experience with vector databases
• Experience writing automated tests and maintaining reliable test coverage

Nice to have:
• Degree in Computer Science or a related field;
• Experience with cloud platforms;
• Familiarity with message brokers or streaming platforms (e.g., Kafka or RabbitMQ);
• Experience with search and indexing technologies such as Elasticsearch.

What we offer:
• B2B contract
• Flexible working hours
• Remote, hybrid, or office-based work
• Real impact on the product and technical decisions
• Optional Multisport and Medicover benefit packages
• Friendly and collaborative work environment
• Interesting technical challenges and opportunities for professional growth
• Working in a team of ~10 software, AI, and DevOps engineers
• PR reviews and technical discussions

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