Data Science Tech Lead - Automation and Innovation Department

Location: Warszawa 12, Warszawa

Type of contract: Direct B2B

Type of cooperation: Hybrid (to be decided)

Recruitment Only!

As a Data Science Tech Lead, you will build our data capabilities end to end: collecting, analyzing, driving insights, and delivering machine learning solutions that enhance our offerings. You will play a pivotal role in building the organization’s “data muscle,” empowering Operational and Network teams to use data for smarter decisions, operational excellence, and innovation. The role requires a seasoned professional with deep expertise in data strategy, analytics, and governance, paired with a hands-on mindset to deliver results. 

What tasks await you?

• Ensure key business drivers are captured during the design of Machine Learning solutions in collaboration with product stakeholders.

• Lead data science projects and mentor data scientists, establish standards for code quality, experimentation, documentation, and reproducibility.

• End-to-end ownership of ML models on Data Science platform, from data ingestion and feature engineering to training, deployment, monitoring, and retraining.

• Drive data strategy and governance: data contracts, quality, privacy, security, and compliance across the model lifecycle.

• Ensure reliability of models in production (SLOs/SLAs, observability, retraining schedules, alerts).

• Extract and analyze network and business data to identify trends, detect anomalies, and recommend improvements in service performance and customer experience.

• Apply advanced analytical techniques and develop predictive models and algorithms that support telecom operations across the value chain.

• Collaborate with cross-functional teams including engineering, product, and operations.

• Maintain and enhance the model development environment including pipelines and orchestration frameworks.

• Visualize and explain the outcomes of the work in a way that is understandable for diverse audiences

What skills will be appreciated?

• Minimum 5 years of proven industry experience in data science or applied machine learning.

• Solid business acumen, strong customer centric mindset and strategic thinker who can balance big picture strategy with tactical needs of day-day execution.

• Strong programming skills in Python.

• Expert knowledge of supervised and unsupervised machine learning methods.

• Hands-on experience with ML libraries and frameworks such as Scikit-Learn, TensorFlow, PyTorch.

• Proficient with big data tools (e.g., Spark, Hadoop) and orchestration tools.

• Solid foundation in data analytics, data visualization, data mining, statistics, and probability theory.

• Experience with SQL and relational databases.

• Familiar with agile methodologies and software development practices (Git, JIRA, Confluence).

• Experience working in cloud environments (Data Robot, AWS and GCP are a plus).

• Understanding of big data ecosystems and ETL processes.

• Previous experience working with telecom datasets (e.g., network KPIs, customer behavior) and stakeholder management skills.

• Strong problem-solving skills and a proactive, detail-oriented mindset.

• Excellent communication skills with the ability to present findings to diverse audiences.

• Fluent in English (written and spoken).