Senior Data Platform Engineer (Python)

At ROITI we work on solving trading and risk challenges related to the growing energy generation from renewables, the introduction of large-scale batteries, the closing down of conventional thermal power plants, and other fun topics in the energy sector. The solutions we build are typically related to asset optimization, data management and reporting, process improvements, and trading and risk functionalities.

For our growing team in Sofia, we are looking for a Senior Data Platform Engineer who will work with our clients in the energy and commodities business to deliver optimized ETL/ELT processes, develop and deploy data pipelines to efficiently store and retrieve data, and develop Python libraries to work with internal APIs. If you enjoy a dynamic environment and diverse challenging tasks, our expanding team is the right place for you.

Experience we are looking for:

• Strong proficiency in Python and writing production-grade code
• DataFrame libraries such as Pandas, Polars, or PySpark
• Building, optimizing, and maintaining ETL/ELT pipelines
• Working with various data sources – APIs, object storage, local files, FTP/SFTP, streaming services, etc.
• SQL and NoSQL Databases
• Data Lakes and Lakehouses
• Data modelling – Star/Snowflake Schema, Data Vault design, etc.
• Query performance optimization
• Data streaming technologies – Kafka, RabbitMQ, Azure Event Hub, AWS SQS, etc.
• Experience with cloud environments such as Azure, AWS, or GCP
• Working with modern data platforms such as Databricks, Microsoft Fabric, Snowflake, or Azure Synapse.
• Good understanding of Big Data processing concepts and distributed computing
• Experience with Git and version control workflows
• Proficiency with command-line tools and shell scripting

Experience in the following is a plus:

• Docker and container technologies
• CI/CD pipelines and deployment automation
• Additional programming languages such as Scala, Java, Go, or C#
• The AI/ML ecosystem and data-intensive applications
• Finance/economics domain
• Proficiency in German language

We offer:

• Competitive remuneration package:

– Above average market research-based salaries.

– Options for additional stimuli in the long term.

• Challenges offering professional and personal growth and fully company-sponsored:

– Internal and external trainings and courses

– Obtainment of certifications

– Tickets for tech events

• Internal policies that allow you to take control of your own schedule:

– Flexible home office

– Floating working hours

– Additional paid leave days

•  Transparent communication:

– Regular town hall meetings where the CEO and CFO update everyone on current company matters.

– Clear and open career path and salary brackets.

– Salary and performance review every 6 months.

• Fully covered additional health insurance, including dental, yearly preventative medical examinations, and healthy food at the office.
• Fully covered Multisport card.
• Pleasant team atmosphere – movie nights, charity work, parties, team buildings.

If you are interested, please send us a CV!