Data Engineer

Flix; Warszawa; On-site; PLN 180,000 - 280,000; Full time

Job summary

Flix is seeking an experienced Data Engineer on a freelance/service agreement basis (B2B). You will build data pipelines powering marketing budget decisions and attribution, using Python, SQL, and Airflow. Join a fast-growing mobility platform and help scale data products for cross-functional teams.

You will operate as an independent contractor in Poland, collaborating with Product Owner to translate needs into robust solutions and ensuring data quality across pipelines.

Qualifications

• 2–4 years of hands-on data engineering experience.
• Degree in Computer Science or related field; business/marketing with tech exposure welcome.
• Proficient in Python, SQL, CI/CD, Terraform, Git, and Airflow.
• Experience with data quality, monitoring, and documentation.
• Excellent English communication and ability to work with non-technical stakeholders.
• Location: Poland-based contractors (B2B).

Responsibilities

• Develop reliable data pipelines using Python, SQL, and Airflow.
• Ensure data quality through validation and monitoring.
• Collaborate with Product Owner to translate data needs into solutions.
• Review AI-generated outputs appropriately and provide feedback.
• Contribute to scalable data infrastructure improvements.

Skills

English communication

Independent thinking

Stakeholder collaboration

Education

Bachelor's degree in Computer Science or related field

Tools

Python

SQL

Airflow

Terraform

CI/CD

Git

AWS

Docker/Kubernetes

Job description

We are looking for an experiencedData Engineer to join Flix on a freelance/service agreement basis (B2B contract).

Scope of Services

As a Data Engineer at Flix, you can make an impact by building the data pipelines and products that power marketing budget decisions for one of Europe's fastest-growing mobility platforms and contributing to team’s expansion into marketing attribution.

About the Engagement

• Use Python, SQL, and Airflow to develop reliable data pipelines that empower marketing stakeholders with timely, actionable data
• Be a good judge of when to delegate to AI, when to trust, and when to meticulously review AI-generated work
• Ensure data quality through validation, monitoring, and clear documentation
• Participate in code reviews and contribute to engineering best practices within the team
• Collaborate with the Product Owner and team to understand marketing stakeholders' data needs and translate them into technical solutions
• Contribute to the design, optimization, and continuous improvement of scalable data pipelines and infrastructure
• Understand data products deeply enough to independently investigate data questions, spot anomalies, and explain what the numbers mean to non-technical stakeholders

About You

• 2–4 years of hands-on experience in data engineering
• Degree in Computer Science or a related field - candidates from Business or Marketing backgrounds with technical exposure are also welcome
• Solid experience with Python, CI/CD, Terraform, SQL, relational databases, and Git
• Familiar with ETL orchestration tools such as Airflow
• Naturally curious - comfortable digging into data independently to find the root cause, framing questions about data and developing deep domain expertise over time
• Communicates well and works effectively with both technical and non-technical stakeholders; fluent in English
• Preferred: experience with AWS, Docker, Kubernetes, or foundational marketing knowledge
• Cooperation based on a service agreement (B2B/freelance contract), not an employment contract
• You will operate as an independent contractor, responsible for delivering agreed services and submitting invoices
• Location: open for contractors based in Poland

At Flix, we are committed to fostering diversity and inclusion.