Senior Data Scientist

We are looking for you if you want to work at one of Hungary's leading telecommunications companies to help our clients navigate the digital world. Take the first step, bring your inspiring ideas and join our supportive and creative Data science team.

Be curious and responsible, work passionately and be open to development. Let’s reach our goals together, because at Yettel you can inspire true change while being yourself. Who are we? More than 1,800 colleagues working at nearly 130 locations across the country forming one big team and enjoying an unlimited experience. We have a lime heart and Yettel enables us to make our dreams come true.

Join Yettel Hungary as

Senior Data Scientist,

be yourself and make a difference in the world.

You will have the following responsibilities:

• By designing, developing, and evaluating machine learning models and algorithms, you transform data into scalable, high‑impact solutions that strengthen data‑driven decision‑making, improve operational efficiency, and support the company’s long‑term innovation and competitive advantage.
• Through close collaboration with data science peers and cross‑functional stakeholders, you translate business needs into actionable AI solutions aligned with strategic objectives, ensuring that investments in data science deliver measurable value and directly support organizational priorities.
• By applying strong statistical methods, machine learning algorithms, and data analysis techniques, you build reliable, explainable models that foster trust in AI‑driven outcomes and enable the company to scale its analytics capabilities responsibly and confidently.
• You actively participate in generative AI initiatives, working with LLMs, knowledge graphs, traditional NLP approaches, and custom models to develop innovative, forward‑looking solutions.
• By staying up to date with the latest research and developments in data science and generative AI, you continuously introduce new ideas and techniques that enhance processes, improve solution quality, and keep the organization at the forefront of innovation.
• In close collaboration with MLOps engineers, data engineers, product management, and IT, you help integrate AI‑based solutions into products and processes, ensuring they are scalable, reliable, and ready for real‑world impact.
• Through mentoring junior and medior colleagues and participating in organization‑wide knowledge‑sharing sessions, you contribute to a collaborative learning culture and help elevate the overall capability and maturity of the data science community.

You are the ideal candidate for our team if you have / are:

• BSc or MSc of IT, Economics, Technology, Natural or Social Sciences. 
• Advanced with data science tools (e.g. Python, SQL, MLflow, Spark). 
• At least 4-5 years of experience in a data science or machine learning engineer role. 
• Thorough understanding of statistics, machine learning, data modelling, deep learning. 
• Excellent problem-solving skills and the ability to work independently and as part of a team. 
• Proficient level of English. 
• Experience in marketing is a plus.  
• Experience with Cloudera and H2O Spark is a plus. 
• Knowledge of AWS, Sagemaker, Bedrock or other cloud related solutions for data science is a plus. 

You’ll feel at home in the Yettel team if you enjoy working collaboratively, take ownership of your work, think in a data-driven way, have a proactive mindset, and treat everyone with respect. At Yettel, we are relentlessly working to reshape the telco industry, which is why it’s important to us that you use AI tools at least at a basic level and confidently integrate them into your day-to-day work to become even more effective.

Discover the opportunities offered by Yettel.

#FlexibleWorking: On Tuesdays, Wednesdays and Thursdays we work in the nature-friendly and innovative Yettel House, and in the Garden office in the summer. On Mondays, if our projects or tasks require it, we have the opportunity to work in the Yettel House, but also from home, on Fridays we are all in home office.

#Health: We provide our colleagues with collective life and health insurance, paternity leave, and free advice in the areas of lifestyle, psychology, law and finance. Our office gym and saunas also await our employees.

#Technology: It is natural that you will receive a company smartphone with unlimited internet, and we even offer discounted rates for your family and friends.

#Learning: Trainings, courses and an online platform are also available so that you never stop developing! Our goal is to support you throughout your personal and professional career, while you are constantly learning new things!

#YettelHQ: Our headquarter at Törökbálint is one of the most modern office buildings in the country, with a panoramic terrace, an outdoor sports field and an alternative garden office.

#YettelBus: You can also get to Törökbálint with Yettel's buses, which are available to everyone. You don’t need to show any documents when boarding. These buses leave from several stations in the city: Népliget, Kelenföld, as well as Déli pályaudvar stations, and you can recognize them by the "Yettel bus - Yettel" sign on the front of the vehicles.

Are you interested?

Please submit your application and we’ll contact you soon. For more information about the application process please visit our career page. Until then, please follow us for the best Yettel moments on Instagram and LinkedIn.