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

* 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.