Senior Data Developer (m/f/d)

Join our Global Network Analytics area

This is a role for someone who enjoys working close to data, understands both technical quality and business context, and wants to have a real impact on how data is prepared, validated and used by analytical, reporting and product teams.

As a (Senior) 

Data Developer

 you will help transform data into a trusted foundation for decision-making, reporting and automation. You will combine technical engineering skills with business understanding, data quality awareness and a critical approach to AI-supported work

In this role, you will:

• Design, build and maintain

ETL/ELT processes

using SQL, PySpark and Python, including integration of data from different source systems. 

• Develop data layers in

Databricks, Data Lake and Delta Lake

, including tables, views and data models used by analytical, reporting and automation solutions.

• Automate and orchestrate data loading and transformation processes to reduce manual work, improve repeatability and lower the risk of errors. 
• Ensure data quality, consistency and reliability through validation rules, monitoring, alerting and incident diagnosis.
• Optimize SQL queries, Spark processes and data storage structures with a focus on performance, stability, scalability and processing costs. 
• Provide reliable, ready-to-use data to analysts, Product Owners and other stakeholders as a foundation for analysis, reporting and automation
• Create and maintain technical documentation in Confluence, covering data processes, models, KPI logic, dependencies, data lineage and incident-handling procedureshttps://inpost-my.sharepoint.com/personal/kstrzezek_inpost_pl/_layouts/15/Doc.aspx?sourcedoc=%7B20EB6B8C-8571-4B7D-9B1D-B4D6827339AE%7D&file=ogloszenie_Data_Analytics_Engineer_MID_1.docx&action=default&mobileredirect=true  
• Use AI tools consciously as a work accelerator, while fully verifying generated code, configurations and documentation before implementation.

What we are looking for

 

• At least

2 years of experience

in Data Engineering, Analytics Engineering or data analysis, including experience in designing ETL/ELT processes and building data models or data layers for analytical purposes.

• Experience in maintaining production data processes, including monitoring, issue diagnosis and data quality assurance.
• Experience with cloud solutions, especially

Microsoft Azure

.

• Practical knowledge of

SQL, Python, PySpark and Databricks

. 

• Understanding of

Data Lake / Delta Lake architecture

and data modelling principles. 

• Practical experience with

Git and Azure DevOps

, including managing changes across Dev, Test and Prod environments.

• The ability to translate business requirements into technical solutions.
• Advanced English skills, enabling confident communication in an international environment. 
• Analytical and logical thinking, attention to detail, proactivity and the ability to prioritize work under time pressure.

Nice to have

• Experience working in a complex operational environment. 
• Knowledge of dimensional modelling, including star schema, fact and dimension tables, data grain, and normalization or denormalization approaches for reporting and analytics. 
• Knowledge of advanced Databricks and Delta Lake mechanisms. 
• Experience with streaming technologies such as

Kafka, Structured Streaming or Event Hubs

. 

• Familiarity with monitoring and alerting tools.
• Knowledge of data security, access control, metadata management and data lineage principles. 
• Experience with

Jira and Confluence

.

• Certifications such as

Microsoft Certified: Fabric Analytics Engineer DP-600

or

Databricks Data Engineer / Analyst Associate

.

Why join InPost?

• Real ownership — your data products will directly influence strategic decisions
• Opportunity to cooperate in a diverse, international, and cross-functional environment alongside leading experts
• Space to experiment with new technologies — including AI tooling — and bring innovations into production
• Your impact will be visible immediately 
• We offer B2B type of cooperation

• Experience working in a complex operational environment.
• Knowledge of dimensional modelling, including star schema, fact and dimension tables, data grain, and normalization or denormalization approaches for reporting and analytics.
• Knowledge of advanced Databricks and Delta Lake mechanisms.
• Experience with streaming technologies such as

Kafka, Structured Streaming or Event Hubs

.

• Familiarity with monitoring and alerting tools.
• Knowledge of data security, access control, metadata management and data lineage principles.
• Experience with

Jira and Confluence

.

• Certifications such as

Microsoft Certified: Fabric Analytics Engineer DP-600

or

Databricks Data Engineer / Analyst Associate

.