Hiring.Camp

Data Scientist (f/m/d) @ A1 Competence Delivery Center

A1Group

·

Jun 1, 2026

Location
София, бул. Черни връх 51 Б, Bulgaria
Workplace
Hybrid
Type
Full-time
Department
Education
Experience
3+ years
Closing date
Jun 30, 2026
Source
Workday

Description

Strength. Care. Growth

A1 Competence Delivery Center is a vital component of A1’s telecommunications business. Acting as an expertise hub, CDC is dedicated to delivering a full range of high-quality IT, network, financial and other services to support A1’s operations across all OpCos, independent of location.

Using the power of being OneGroup and leveraging synergies, CDC enables transparency of resources, key skills and knowledge expansion and personal career growth opportunities’ enhancement, paired with job stability.

You will know we are the right place for you, if you are driven by:

  • Opportunities to learn and build your career.

  • Meaningful work in a stable and fast-paced company.

  • Diversity of people, projects, and platforms.

  • A supportive, fun, and inspiring place to work.

Role Overview:

Data Scientist with expertise in Python, machine learning and conversational AI, responsible for fine-tuning chatbot models in WatsonX, developing data pipelines, and leveraging NLU and generative AI to improve chatbot performance and user interactions.

Role Insights:

  • Contribute to the continuous training and improvement of our chatbot using WatsonX.
  • Fine-tune models to enhance performance and accuracy.
  • Develop and maintain data pipelines for efficient data processing.
  • Conduct regular model training to ensure up-to-date and reliable outputs.
  • Apply your expertise in Natural Language Understanding (NLU) to optimize chatbot interactions.
  • Leverage generative AI techniques to create engaging and effective conversations.

What Makes You Unique:

  • Over 3 years of professional experience in data science with a strong focus on Python.
  • Experience in fine-tuning machine learning models.
  • Knowledge of data pipeline development and maintenance.
  • Hands-on experience with NLU and conversational AI.
  • Bachelor’s or Master’s degree in Data Science, Computer Science, or a related field.

Nice to have:

  • Familiarity with the WatsonX platform for AI and machine learning.
  • Experience with RESTful APIs and integrating chatbots with various platforms.

Our gratitude for the job done will be eternal, but we’ll also offer you:

  •  Valuable experience in one of the fastest-growing and most innovative industries.
  •  Challenging assignments with strong opportunities for personal and professional growth in a multinational environment.
  •  Hybrid working model supporting a healthy work-life balance.
  •  Thousands of online and in-person Learning opportunities for you to grow.
  •  Modern, open, and friendly work environment that fosters continuous learning and the development of both technical and soft skills.
  •  Special employee tariffs and a wide range of attractive employee benefits.

If you have any questions,  please do not hesitate to contact Nadya Georgieva.

Skills

PythonMachine LearningData Science

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