T Hub - AI Intern – LLM, Voice to Text & Agentic Systems

T Hub - AI Intern – LLM, Voice to Text & Agentic Systems

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Location: Warszawa, ul. Marynarska 12
Form of Employment: Civil Contract / Internship (Umowa zlecenie)

T Hub is a dynamic, forward-thinking initiative where technology matters! We serve as the core of innovation within our organization. It’s a place where best talents converge to ideate, prototype, and implement cutting-edge solutions in international projects held in Deutsche Telekom Group.

Have you ever asked yourself whether you'd rather work in a big-tech, software house or startup? At home or in an office? In the telco or IT area? In international teams or those of Poland? At T Hub, the answer is one – YES!

What’s next? Find yourself a super position Apply Talk with us Find yourself in a superposition!

What tasks await you?

• Build and fine-tune large language models (LLMs) for specific business use cases
• Contribute to the development and testing of voice-to-text pipelines
• Design, implement, and iterate on conversational agents interacting via text and speech
• Prepare and annotate text and audio datasets for training and validation
• Develop prototype agentic applications (e.g., chatbots, task-oriented assistants) using Python
• Evaluate model outputs, prepare reports, and recommend improvements
• Explore emerging GenAI techniques and suggest production-ready enhancements
• Participate in code reviews, documentation, and team stand-ups while working closely with senior engineers

What skills will be appreciated?

• Strong Python programming skills with knowledge of libraries such as Pandas, NumPy, PyTorch, TensorFlow, Hugging Face Transformers or similar
• Basic understanding of machine learning concepts (especially NLP, speech processing, or autonomous agents)
• Familiarity with transformer architectures, Hugging Face ecosystem, and prompt engineering
• Hands-on experience with open-source models (e.g., Whisper, Vosk) and audio-processing pipelines or agent frameworks (e.g., LangGraph, smolagents)
• Ability to clean and prepare large-scale text and audio datasets
• Experience with Git (creating pull requests, code reviews)
• Strong analytical thinking and ability to clearly communicate results
• Ability to work with technical documentation and scientific papers
• English min. B2 level

Nice to have:

• German language skills (min. B1),
• Familiarity with MLOps tools (MLflow, DVC, CI/CD for ML models)
• Knowledge of audio signal processing (e.g., FFT, mel spectrograms)
• Background in UX/UI design for conversational or voice interfaces

Our offer for you

Working at T-Mobile’s T Hub will offer you a unique and highly rewarding experience on the IT market. As a leader in the telecommunications industry, T-Mobile not only provides a platform to develop your technical skills but also empowers you to contribute to real innovation.

You will have the opportunity to work with cutting-edge technologies, including AI, conversational systems, and voice interfaces, gaining hands-on experience across the full AI product lifecycle.

Our culture promotes continuous learning and collaboration in international teams. With access to mentorship from experienced engineers, you will grow both technically and professionally in a supportive and dynamic environment.

Benefits

• No dress code

  • you can just be yourself here

• Medical,
  sport and life insurance
  packages at preferential terms

• Access to: Percipio, Coursera, Rodos learning platforms

• Access to our products and
  services at preferential terms

• Employment contract-based cooperation

• Know Talent - receive training
  or financial bonus for
  recommending new
  employees

What will your recruitment process be like?

A fair approach to all people who want to join T Hub means that:

• The recruitment process is transparent;
• Our recruitment decision is based solely on an assessment of your skills (your race, skin color, sexual orientation, gender identity, origin, disability, political view, appearance, or religion will not have any influence on yhe outcome of the process);
• Regardless of the outcome of the process, you will get detailed feedback.

Who are we?

We're one of the four European technological hubs of the Deutsche Telekom group, to which T-Mobile belongs. Thanks to this, you have the opportunity to work on global projects as well as collaborate with business partners from various industries. Whether it's automotive, security, banking, or countless other options - be sure to explore them all!