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September 5, 2026

Senior Data Software Engineer

Senior • Remote

Warsaw, Poland

We are looking for a Senior Data Software Engineer to join a growing Data Practice.

Projects and technologies are diverse, covering current market technologies and open-source communities. The role supports clients in domains including Financial Services, Health Care, and Insurance, offering opportunities to develop in different directions.

Quick Facts

  • Hybrid-by-design work model and the opportunity to work remotely within Poland
  • Opportunity to work abroad for up to 60 days annually
  • Business-driven relocation opportunities
  • Open to contractors; B2B cooperation terms are agreed individually
  • Benefits listed are available to employees only
  • Only selected candidates will be contacted

Responsibilities

  • Implement data ingestion from diverse sources, including RDBMS, REST HTTP APIs, flat files, streams, time-series data, and SAP, using Big Data technologies.
  • Process and transform data using Spark and cloud services.
  • Understand and implement project-specific business logic using programming languages supported by the primary data platform.
  • Optimize data retrieval, develop dashboards, and perform data validation.
  • Collaborate with data scientists, analysts, and IT professionals.
  • Provide thought leadership on Big Data best practices and technology trends.
  • Maintain the integrity and security of big data sources and platforms.
  • Troubleshoot, debug, and upgrade big data systems and applications.

Requirements

  • Bachelor’s degree in Computer Science, Mathematics, or a related technical field.
  • 5+ years of software development experience with Big Data technologies.
  • Advanced knowledge of Python, Scala, or Java.
  • Proficiency with Spark and Databricks and/or Snowflake.
  • Experience with cloud platforms such as Azure, Google Cloud Platform, or Amazon Web Services.
  • Demonstrated experience with big data models, databases, and tools.
  • Understanding of data file formats including JSON, Parquet, and Avro.
  • Hands-on experience with SQL and NoSQL databases, including Cassandra and MongoDB.
  • Proficiency in data warehousing solutions and ETL processes.
  • Ability to work in a fast-paced, team-oriented environment.
  • Detail orientation with strong analytical and problem-solving skills.
  • Knowledge of software development methodologies and best practices.
  • Exceptional written and spoken English at B2+ level.

Nice to Have

  • Experience with Hadoop, Spark, Kafka, Oozie, Airflow, HDFS, and YARN.
  • Experience with message queues, especially Kafka.
  • Production experience with search technologies such as Solr, OpenSearch, or Lucene.

We Offer

  • Work alongside technical specialists in AI, cloud, and digital platform modernization.
  • Supportive, agile, startup-like culture.
  • Career development programs.
  • Thought leadership, mentoring, soft-skills, and well-being programs.
  • Certification opportunities in Anthropic, Gemini, GCP, Azure, and AWS.
  • English classes.
  • Stable pay.
  • Participation in the Employee Stock Purchase Plan with a 15% discount.
  • Benefits package, including health insurance, Multisport, and shopping vouchers.
  • Referral bonuses of up to $2,000.
  • Offices with entertainment and relaxation zones, table tennis, football, free snacks, coffee, and more.
  • Corporate, social, and well-being events.

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