We are seeking a highly motivated Data Scientist to join our growing Data Science and AI team within a leading telecommunications operator. This role will be central to driving customer value by developing advanced machine learning models, ensuring robust data pipelines, and supporting the deployment of cutting-edge AI solutions such as Large Language Models (LLMs) and speech-to-text technologies.
The ideal candidate is both technically strong and business-minded, with a passion for delivering insights and solutions that directly impact customer experience, retention, and revenue.
What we will expect from you:
- Customer Value Modeling:
- Develop, validate, and maintain predictive models focused on churn, lifetime value, segmentation, and customer engagement.
- Collaborate with marketing, product, and customer experience teams to translate insights into actionable strategies.
- Data Pipelines & Infrastructure:
- Design, build, and maintain scalable data pipelines that support analytics and machine learning workloads.
- Ensure high data quality, reliability, and availability across structured and unstructured sources.
- KPI Monitoring & Reporting:
- Define, track, and automate key performance indicators (KPIs) related to network usage, customer behavior, and AI model performance.
- Build dashboards and alerts to provide real-time visibility into business-critical metrics.
- AI/ML Development:
- Contribute to the design, training, and deployment of Large Language Models (LLMs) for customer support automation, knowledge retrieval, and internal process optimization.
- Participate in the development of speech-to-text and natural language processing (NLP) models.
- Collaboration & Innovation:
- Partner with engineers, data analysts, and business stakeholders to align technical solutions with business needs.
- Stay up-to-date with advancements in AI, ML, and telecom analytics, bringing innovative ideas into practice.
For a good start you will need:
- Bachelor degree in Data Science, Computer Science, Statistics, Mathematics
- Strong proficiency in Python, SQL, and ML libraries (e.g., TensorFlow, PyTorch, Scikit-learn).
- Experience with data pipeline tools (e.g., Airflow, Spark, Kafka) and cloud platforms (Azure, AWS, or GCP).
- Proven experience building and deploying predictive models at scale.
- Solid understanding of KPIs relevant to customer lifecycle management (ARPU, churn, NPS, LTV).
Why we think you should apply:
- You will work in an environment which allows you to grow and develop
- Hybrid work model (on-site and off-site)
- 25 days off per year
- Participation in bonus reward system
- Health package
- Mobile phone with unlimited internet and Yettel Family tariff package
- Recreation or health program
- In-house training and development programs
- Career development opportunities
Please include your references in your CV, as reference check is an integral part of our selection process.
We hope to meet you soon.
Yettel d.o.o.
Yettel je deo e& PPF Telekom Grupe, koja je nastala iz partnerstva PPF Grupe i Emirates Telecommunication Group („e&”). e& PPF Telekom Grupa usmerena je na pružanje vrhunskog korisničkog iskustva u oblasti telekomunikacionih i digitalnih usluga u zemljama Centralne i Istočne Evrope. Yettel, deo e& PPF Telekom Grupe, ima skoro tri miliona korisnika u Srbiji i do marta 2022. godine poslovao je pod imenom Telenor Srbija. Kompanija je prisutna na tržištu od 2006. godine i trenutno…
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