Senior Data Engineer (PySpark, NoSQL)

We are seeking a Senior Data Engineer with strong expertise in Azure and PySpark, skilled in designing, implementing, and maintaining robust data processing solutions. This role focuses on building scalable, production-grade data systems, ensuring reliability, and optimizing performance in distributed environments.

Responsibilities

• Design and optimize large-scale data pipelines using PySpark

• Build and maintain scalable ETL/ELT workflows in Azure

• Troubleshoot production issues related to performance, latency, and availability

• Work with distributed NoSQL technologies (e.g., Cosmos DB, Cassandra, DynamoDB, MongoDB, or similar)

• Optimize Spark jobs (partitioning, execution plans, resource usage)

• Implement best practices for scalability, security, and reliability

• Collaborate with cross-functional teams on data-driven solutions

• Contribute to automation, CI/CD, and operational improvements

Requirements

• 5+ years of experience as a Data Engineer or similar role

• Strong hands-on experience with PySpark in production

• Proven experience in data modeling, partitioning, indexing, and performance tuning in NoSQL systems

• Strong programming skills in Python

• Experience building and operating production-grade pipelines in cloud (Azure)

• Experience with distributed NoSQL databases (e.g., Cosmos DB, Cassandra, DynamoDB, MongoDB)

• Strong understanding of distributed systems and performance optimization

• Experience with CI/CD, monitoring, troubleshooting, and production support

• Strong analytical and communication skills (English B2+)

Nice to have

• Experience with real-time / streaming data

• Exposure to Data Science workflows

• Knowledge of Big Data ecosystems

• Experience with financial data

• Familiarity with AI-assisted development or LLM tools

We offer/Benefits
We gather like-minded people:

• Engineering community of industry professionals

• Friendly team and enjoyable working environment

• Flexible schedule and opportunity to work remotely within Poland

• Chance to work abroad for up to 60 days annually

• Business-driven relocation opportunities

We provide growth opportunities:

• Outstanding career roadmap

• Leadership development, career advising, soft skills, and well-being programs

• Certification (GCP, Azure, AWS)

• Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru

• English classes

We cover it all:

• Stable income (Employment Contract or B2B)

• Participation in the Employee Stock Purchase Plan

• Benefits package (health insurance, multisport, shopping vouchers)

• Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more

• Referral bonuses

• Corporate, social and well-being events

Please, note:

• The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview.

• We will reach out to selected candidates exclusively.

EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.