Junior Data Engineer

Promptcube3; Hamburg; Hybrid; EUR 52,000 - 78,000; Full time

Benefits offered by this job

Childcare subsidy

Company pension scheme

Job bike

Job summary

Reeeliance is seeking a Junior Data Engineer in Hamburg to design, build, and maintain scalable data pipelines across cloud platforms. You will work with the data integration team to ensure data quality, privacy, and compliance while supporting AI-driven initiatives.

You will gain hands-on experience with ETL/ELT, data warehousing concepts, and modern tools in a collaborative agile environment. This entry-level role offers a path to grow in distributed multinational projects.

Qualifications

• Foundational knowledge of data modeling and modern data warehousing architectures.
• Proficiency in Python and strong SQL skills for querying and manipulating complex datasets.
• Hands-on experience with Git for version control and collaborative development.

Responsibilities

• Design, build, and maintain data pipelines according to client needs.
• Optimize data extraction, transformation, and loading (ETL/ELT) processes across sources.
• Collaborate with senior engineers to ensure data accuracy, privacy, security, and compliance.

Skills

Python

SQL

Git

Cloud platforms (Azure/AWS)

GenAI basics

RAG application

Education

Bachelor's in Computer Science / IT or related field

Tools

LangChain

Job description

# Junior Data EngineerReeeliance1970-01-21HamburgOn-site / hybridEntry, Permanent, Full time## Role informationAbout the role Data is undeniably one of the world's most valuable resources. However, it's futile if it's not in the right place or the right setup. We strive to place data where it's needed most and can be used to its fullest potential. Become a valued member of our data integration team and start your journey building scalable data architectures and fast data pipelines for our multinational clients. Our use cases range from data warehouse and lakehouse architecture implementations over IoT and data streaming setups to sophisticated AI scenarios, in industries ranging from manufacturing, consumer products, and healthcare to banking and insurance, just to name a few. Your responsibilities You will support the team in designing, building, and maintaining data pipelines according to client business needs and embedding them end-to-end into the given data stack On this role, you will assist in maintaining and optimizing data infrastructure required for data extraction, transformation, and loading (ETL/ELT) from a wide variety of data sources As a junior Data Engineer, you will build, test, and deploy data artifacts on cloud platforms using modern version control best practices You will collaborate with senior engineers to ensure data accuracy, integrity, privacy, security, and compliance by applying data quality assurance methods Monitoring data pipeline performance and assisting in identifying opportunities for pipeline optimization In this role, you will work closely together with both reeeliance and client staff as part of an agile project team Our requirements Solid foundational knowledge of data modeling concepts and modern data warehousing architectures Proficiency in Python and strong SQL skills for querying and manipulating complex datasets Hands-on experience with Git for version control and collaborative development Practical exposure to or understanding of working within cloud environments (such as Azure or AWS) Eagerness to learn new ETL/ELT tools, cloud technologies, and software engineering practices Foundational understanding of a typical GenAI stack (LLMs, Vector Databases, frameworks like LangChain) First-hand experience building a basic RAG application or deploying an open-source model locally Strong problem-solving attitude and an enthusiastic, proactive approach to learning Ability to work both independently on delegated tasks and collaboratively within agile project teams A university degree in Computer Science, Information Technology, or a related discipline (or equivalent practical experience) Articulate with impeccable verbal and written communication skills in German (C1 level) and English (B2 level). Strong & discerning listener What we offer Space to grow: Taking ownership in international projects while continuously expanding your skills Mentorship and Onboarding: Structured introduction supported by dedicated mentor Cutting-edge workspace: Work with the latest technology and modern equipment to drive innovative solutions Long-term stability: A permanent employment in a family-oriented and people-focused company Diverse & inclusive environment: Join a truly international environment and collaborate daily with teammates from over 15 different nationalities Balance matters or work-life harmony: A work schedule designed to promote well-being and productivity Team culture & connection: Social events and structured team-building days held in Berlin and Hamburg Language courses: Learn, improve or practice your conversational skills on language platform Lingoda Never stop learning: You’ll receive a dedicated budget to industry-leading platforms like Udemy and MasterClass to sharpen your technical expertise and leadership skills ...and many other Job perks (childcare subsidy, company pension scheme, job bike, etc...) Find Jobs in Germany on Arbeitnow