Software Engineer Data (REF5581S)

Company Description

As Hungary’s most attractive employer in 2025 (according to Randstad’s representative survey), Deutsche Telekom IT Solutions is a subsidiary of the Deutsche Telekom Group. The company provides a wide portfolio of IT and telecommunications services with more than 5300 employees. We have hundreds of large customers, corporations in Germany and in other European countries.
DT-ITS recieved the Best in Educational Cooperation award from HIPA in 2019, acknowledged as the the Most Ethical Multinational Company in 2019. The company continuously develops its four sites in Budapest, Debrecen, Pécs and Szeged and is looking for skilled IT professionals to join its team.

Job Description

We are building a new, dedicated BI engineering team to take over and further develop a critical Business Intelligence component responsible for billing, reporting, and analytics across a wide range of sales and operational KPIs.

As a BI Software Engineer – Data, you will focus on designing, developing, and operating data pipelines and reporting solutions. The component integrates customer, booking, and product data from multiple internal Magenta APIs (e.g. CDP, PIM, POM) and delivers structured outputs to various stakeholders and systems such as Data Warehouse (ODE), Billing, Kibana, and other analytics consumers.

While the primary focus is on hands-on development, experience as a Product Owner and/or Business Analyst is considered a plus, but is not mandatory.
Your Responsibilities
Design, implement, and maintain scalable BI and data processing solutions
Develop and operate ETL pipelines for customer, booking, and product data
Integrate data from various file- and REST-based Magenta APIs (like POM, PIM, CDP, PCM, etc.)
Generate and deliver reports and datasets for multiple downstream consumers (e.g. ODE, Billing, Kibana)
Collaborate closely with stakeholders across analytics, billing, and platform teams
Contribute to the setup and shaping of a newly formed team, including technical standards and best practices
Ensure data quality, reliability, and performance across the BI component
Support cloud-based operations and monitoring in an AWS environment
What We Offer
The opportunity to build a new BI engineering team from the ground up
A technically challenging environment with modern data and cloud technologies
High impact on business-critical billing and reporting processes
Collaboration with diverse stakeholders across analytics and platform teams
An English-speaking work environment

Qualifications

Required Technical Skills:
Strong experience with ETL processes
SQL
Python
Docker
GitLab
Apache Airflow
Apache Cassandra
Kibana
AWS (general knowledge), including:AWS S3
AWS DataSync
AWS Athena Notebook
Amazon Aurora
Amazon ECS
Amazon ECR

PySpark
Experience with a data hub / data integration platform (Datendrehscheibe)
REST APIs (e.g. TARDIS / REST)
Nice to Have:
Experience in BI or billing-related data domains
Background as Product Owner and/or Business Analyst
Familiarity with data warehouse integrations
Experience working in cross-functional, agile teams
Knowledge of German is a plus, but not mandatory

Additional Information

* Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation.

Company: Deutsche Telekom ITTC Hungary Kft.