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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on AI-driven tools supporting enterprise tax services. Required technologies include Apache Spark, Python, Pandas/Polars, Parquet, Delta Tables along with experience in designing and maintaining Spark applications emphasizing code quality and optimization. Responsibilities cover defining standards, code reviews, team and client collaboration, and documentation. Optional skills include Azure Cloud, FastAPI, Docker, and Kubernetes. The benefits include private medical care.
Senior Data Engineer (Python / Apache Spark / Azure)
Company: SQUARE ONE RESOURCES sp. z o.o.
from: 14 July 2026
to: 13 August 2026
150 - 170 złnet (+ VAT)/ hr.B2B contract (full-time)
Offer parameters
level:senior • expert
working mode:remote
Warszawa, Mokotów
Requirements
Expected technologies
Python
Databricks
Apache Spark
Optional technologies
FastAPI
Docker
Kubernetes
Microsoft Azure
Our requirements
- 5+ years of hands-on experience in software development
- Extensive experience working with Apache Spark, including platforms such as Databricks and/or Azure Synapse/Fabric
- Proficient in Python, with strong skills in data manipulation using Pandas/Polars and similar
- Solid understanding of columnar data storage formats, particularly Parquet, with practical experience using Delta Tables
- Proven expertise in data processing, analysis, and transformation workflows
- Strong analytical and problem-solving abilities with a detail-oriented mindset
- Practical and pragmatic approach to balancing standardized processes with flexibility to meet project goals effectively
- Excellent organizational skills with the ability to self-manage, prioritize tasks, structure workload, and meet tight deadlines
- Solid understanding of microservices architecture and its implementation in scalable systems
Optional
- Experience working with Azure Cloud services (or other major cloud platforms), including a range of SaaS offerings such as Service Bus, Data Lake, Blob Storage, Redis, and more
- Familiarity with FastAPI
- Expertise in containerization and orchestration tools such as Docker and Kubernetes
Your responsibilities
- Define and enforce best practices and coding standards across the project
- Conduct thorough code reviews to ensure adherence to established guidelines and maintain high code quality
- Working both independently and in close collaboration with others in the team
- Communicating clear instructions to team members and helping manage the flow of day-to-day operations
- Communicating with the client regularly
- Design, develop, and maintain robust and scalable Spark applications
- Write clean, maintainable, and efficient code following best practices and coding standards
- Optimize code for performance and scalability, ensuring efficient data handling
- Work closely with cross-functional teams to deliver high-quality software solutions
- Identify and resolve technical issues, ensuring the reliability and performance of applications
- Create and maintain comprehensive documentation for code, processes, and workflows
About the project
The team you will join designs, develops, and deploys innovative enterprise technology and AI-driven tools to support the delivery of tax services. It is a dynamic group combining expertise in tax, software engineering, change management, and project management, working on initiatives from tool design and deployment to training development and engagement management
This is how we organize our work
This is how we work
at the client's siteagile
Benefits
- private medical care
SQUARE ONE RESOURCES sp. z o.o.
At Square One Poland we link IT experts with the business. With over 25 years of experience, we specialize in recruitment processes on a global scale. Despite years of experience, we still have a startup DNA and this is our advantage. Our offices are located in London and Warsaw, however, we can reach clients from all over the world, from start-ups to big worldwide corporations.
This is how we work
Senior Data Engineer (Python / Apache Spark / Azure)
150–170 zł / hr. (B2B)
I apply to:
SQUARE ONE RESOURCES sp. z o.o.
Warszawa, Mokotów
Need more information?
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