Junior People Data Engineer

ISS Tech Team; Warszawa; On-site; PLN 90,000 - 120,000; Full time

Job summary

ISS is seeking a Junior Microsoft Fabric Data Engineer in Warsaw to support the People Data Hub by building and running data pipelines, transformations, and data quality controls.

You will work with the People Data Analytics, Cloud Engineering, and DevOps teams to deliver scalable HR data solutions, gain hands-on experience with modern data platform technologies, and help improve data consistency and automation across the organization.

Qualifications

• Experience with SQL querying, data validation, and basic data modeling.
• Foundational Python and/or PySpark programming skills.
• Understanding ETL/ELT and data integration from CSV/Excel and APIs.
• Awareness of data governance, security, and quality practices.
• Willingness to develop deeper Fabric and cloud data platform expertise.

Responsibilities

• Build and maintain data pipelines in Microsoft Fabric for HR data.
• Develop data transformations following Bronze-Silver-Gold patterns.
• Monitor data quality and validate incoming datasets.
• Support secure operations by following governance, security, and docs standards.
• Collaborate with engineers, architects, and stakeholders to scale the People Data Hub.

Skills

SQL

Python

PySpark

Data modeling

ETL/ELT

Data quality

Git

Azure Data Services

Microsoft Fabric

Data governance

Tools

Microsoft Fabric

Lakehouse

OneLake

Power BI

Git

Azure

Job description

As a global leader in facilities services we connect people and places to make the world work better. Whether directly or indirectly, you’ll play a vital role in supporting our placemakers in delivering exceptional workplace experiences for our customers. Together, we make space for people and businesses to thrive.

Location: Warsaw

Language: English, Polish

Application deadline: 10.08.2026

Main purpose of the position

The Junior Microsoft Fabric Data Engineer supports the development and operation of the People Data Hub by implementing and maintaining data pipelines, transformations, and data quality controls within Microsoft Fabric. The role works closely with senior engineers and architects to ensure reliable ingestion, processing, and delivery of HR data for reporting and analytics. The position contributes to maintaining secure, well-documented, and operationally stable data solutions while gaining hands-on experience with modern data platform technologies. Through day-to-day delivery activities, the role helps improve data consistency, automation, and scalability across the organization.

What You’ll Do

• Build and maintain data pipelines in Microsoft Fabric to ingest, transform, and prepare HR data for reporting and analytics.
• Develop and support data transformations following established Medallion Architecture (Bronze, Silver, Gold) patterns.
• Monitor data quality and validate incoming datasets, identifying issues and supporting resolution with senior engineers.
• Support secure and reliable operations by following data governance, security, deployment, and documentation standards.
• Collaborate with senior engineers, architects, and business stakeholders to deliver scalable data solutions and continuously improve the People Data Hub platform.

Who You’ll Work With

• People Data Analytics team
• Cloud Engineering team
• DevOps

Key Qualifications

• Basic knowledge of Microsoft Fabric including Lakehouse, Data Pipelines, Notebooks, and OneLake, with a strong willingness to develop deeper platform expertise.
• Hands-on experience with SQL and data processing concepts, including querying, data validation, and basic data modeling principles.
• Foundational programming skills in Python and/or PySpark, with the ability to develop and troubleshoot simple data transformation logic.
• Understanding of ETL/ELT processes and data integration concepts, including working with files (CSV, Excel) and APIs as data sources.
• Awareness of data governance, security, and quality practices, including handling sensitive business data and following established standards and procedures.
• Preferred: Exposure to Azure Data Services, Microsoft Fabric, Power BI, Git, or cloud-based data platforms through projects, coursework, internships, or professional experience.

Personal Skills You Excel

• Strong learning agility and curiosity, with a proactive approach to developing new technical skills and understanding modern data platform technologies.
• Effective communication skills, with the ability to clearly explain issues, ask questions, and collaborate with technical and business stakeholders.
• Attention to detail, ensuring accuracy in data processing, validation, documentation, and adherence to established standards.
• Team-oriented mindset and accountability, demonstrating reliability, willingness to support colleagues, and ownership of assigned tasks from start to completion.

Why ISS

At ISS, we are more than just a service provider of cleaning, food, workplace and technical services, we are a partner in our customers’ success. By creating exceptional service moments and transforming workplaces into spaces where employees feel valued, engaged and productive, we enhance productivity and help our customers to attract talent and grow their businesses. This begins with our own people through training, career development, and a supportive culture – empowering them to deliver outstanding service. We know that when our people thrive, they create spaces where our customers’ employees and businesses thrive too.

ISS is a Place to Be You.

Be who you are. Become what you want. Be part of something bigger.
Become more. Become ISS.

ISS seeks to BE a place of belonging and CREATE places where every person is welcomed, embraced, and valued for exactly who they are. Places where people feel safe, respected, represented, and supported as their authentic selves.