DWH Developer (m/f/n), Luxembourg

Creos Luxembourg S.A. is the operator of electricity and natural gas networks in Luxembourg. Nearly 900 employees currently serve the company.

Creos is responsible for the planning, construction, maintenance, and operation of high, medium, and low voltage electricity networks, as well as high, medium, and low pressure natural gas pipelines that it owns or has been entrusted to manage. The networks managed by Creos include more than 12,000 km of electricity lines and approximately 2,200 km of natural gas pipelines, serving over 317,000 electricity customers and around 50,000 natural gas customers.

tasks

• You design, develop, and maintain data pipelines and integrations for our national energy data platform using Python, Java, Kafka, and TimescaleDB
• You collaborate with product managers, data architects, and other developers to understand data requirements and deliver efficient solutions
• You develop and optimize data models and schemas for performance, scalability, and reliability
• You write and maintain complex SQL queries to support analytics, reporting, and data transformations
• You implement and maintain APIs and data services to ensure seamless data integration and accessibility
• You ensure the reliability, performance, and efficiency of data workflows and systems
• You write clean, maintainable, and well-documented code following best practices and standards
• You participate in code reviews and provide constructive feedback to ensure code quality and consistency
• You debug, troubleshoot, and resolve data and system issues to maintain stability and reliability
• You contribute to the improvement of data engineering practices, tools, and workflows
• You stay up to date with advancements in data technologies, tools, and industry trends to enhance our platform's capabilities

profile

• You hold a Bachelor’s degree in Computer Science, Software Engineering, or a related field
• You have at least 4 years of experience in data engineering or backend software development, with a focus on data pipelines, integration, and microservices architecture.
• Strong proficiency in Python and Java, including experience with frameworks such as Spring Boot and data processing libraries
• Hands-on experience with event-driven architectures and tools such as Kafka
• You demonstrate expertise in database systems (SQL and NoSQL), data modelling, and query optimization
• You are familiar with time-series databases, such as Timescale DB, is a strong advantage
• Knowledge of RESTful API design and development for data integration
• Understanding of version control systems (e.g., Git) and CI/CD pipelines
• You have experience working with cloud platforms (e.g., AWS, Azure, Google Cloud) and containerization technologies (e.g., Docker, Kubernetes)
• A strong interest in business processes within the energy market and the ability to align technical solutions with business needs
• Excellent analytical and problem-solving skills with a keen attention to detail
• Ability to work independently and collaboratively in a fast-paced, agile environment
• Strong communication skills, a team-oriented mindset, and enthusiasm for knowledge sharing and mentorship
• Highly effective verbal and written communication skills in English. The knowledge of German and/or French is considered an asset