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Data Engineer – Data Quality & Data Modeling | Berlin | Freelance

Original title: Data Engineer (m/w/d) – Datenqualität & Datenmodellierung | Berlin | Freiberuflich

YER Deutschland · Berlin, Deutschland, Germany · Hybrid · Senior

  • Berlin, Deutschland, Germany · Hybrid
  • 3 Monate
  • German

Indexed (4 days ago) · refreshed constantly

Start
2026-11
Duration
3 Monate
Work mode
Hybrid
Contract
Freelance / B2B
Seniority
Senior
Reference
3064483

Required skills

Nice to have:AWSBPMNCamunda

Languages: German

Job description

Seeking an experienced Data Engineer for a client project in Berlin to analyze and improve data quality and structure, develop data models, and optimize data landscapes. The role involves close collaboration with internal teams.

Project overview

I am looking for an experienced Data Engineer (m/f/d) for a client who analyzes the quality and structure of large datasets, identifies weaknesses, and develops sustainable solutions for optimizing the data landscape.

In this project, you will play a central role in analyzing and cleaning data, further developing a company-wide data model, and optimizing existing systems and processes. You will work closely with internal development teams, business departments, the system architect, and the BI team.

Responsibilities

  • Analysis of large datasets to identify inconsistencies, data errors, and structural weaknesses
  • Development and implementation of measures for sustainable improvement of data quality
  • Conception and implementation of data cleaning processes and suitable tools
  • Building and further developing a structured, company-wide data model
  • Analysis and optimization of existing data architectures and processes, including in distributed system landscapes
  • Close collaboration with developers, business departments, system architecture, and BI to develop sustainable solutions
  • Support for the BI team in data analysis and evaluations

Requirements

Framework Data

If you are interested in this project, I look forward to receiving your current profile with details on your availability and your hourly rate.

Best regards

Jan Stangenberg

YER Deutschland GmbH

  • Several years of experience as a Data Engineer or in a comparable data-driven position
  • Profound knowledge of working with SQL databases, such as MySQL or Oracle
  • Good understanding of data modeling, data architectures, and data quality management
  • Ideally, experience with distributed system landscapes
  • Analytical, structured, and independent way of working, as well as a keen eye for detail
  • Very good German language skills are essential
  • Good English language skills
  • Desirable: Experience with AWS and/or BPMN tools like Camunda
  • Start: November 2026
  • Duration: 3 months with option for extension
  • Workload: Full-time
  • Location: Berlin
  • Remote Share: Hybrid working, ideally 2-3 days per week on-site
  • Contract Type: Freelance

Project details

  • Start: 2026-11
  • Duration: 3 Monate
  • Remote: hybrid
  • Location: Berlin, Deutschland, DE
  • Languages: German

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