Reeeliance

Junior Data Engineer

Hamburg, Germany full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

About the roleData 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 responsibilitiesYou 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 requirementsSolid 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

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 offerSpace 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…)

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Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT API integration MySQL Project Management Python Sales Mid level

Likely questions

  1. Tell us about work you have done that is close to the Junior Data Engineer role.
  2. How would you approach your first 30 days at Reeeliance?
  3. Which of API integration, MySQL and Project Management have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with API integration, MySQL and Project Management.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Junior Data Engineer role because I can bring practical experience in API integration, MySQL and Project Management, learn the team quickly, and contribute to the outcomes Reeeliance needs from this hire.

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