Job Title: Backend Developer - Big DataLocation: Poland (1 day in the office (Warsaw) for every 1-2 months)Employment Type: Contract About Hirexa Solutions:Hirexa Solutions is a leading player in the recruitment ecosystem across the United States, United Kingdom, Europe, and India. As the fastest-growing next-generation provider of technology talent, we empower our clients to become resourceful, achieve higher productivity, adopt agile structures, and effectively execute project deliverables.Envisioned and co-founded by veterans of the Information Technology industry, our mission is to make recruitment efficient, flawless, and cost-effective. Our unwavering commitment to strategic investments in intelligent technology underscores our passion for people and our dedication to helping organizations realize their true potential. Position Overview:For one of our partners, we are seeking a Backend Developer who will be responsible for building scalable, efficient, and robust solutions for global regulatory reporting, contributing to risk reduction and operational excellence across the Group. The ideal candidate will possess the necessary skills and experience to contribute to the success of our partner organization. As a Backend Developer, you will: Design and implement scalable, high-performance reporting solutions. Build Spark-based applications (Scala preferred). Develop and maintain end-to-end ETL/ELT pipelines, including data transfer, validation, and business logic. Collaborate closely with Product Owners, Architects, Analysts, and cross-functional teams across geographies. Work in an Agile/Scrum environment with a strong focus on continuous delivery and quick feedback loops. Contribute to CI/CD pipelines and ensure high-quality delivery through unit testing, automation, and peer reviews. Document solutions in standard tools (JIRA, Confluence, ALM). Integrate data from multiple sources, supporting a microservices-based architecture. Required Qualifications: Bachelor’s degree in Computer Science or related field. 3+ years of experience in software/data engineering, preferably in financial services. Hands-on experience with Apache Spark (Scala). Strong background in ETL/ELT pipeline development. Knowledge of integration solutions (APIs, microservices). Familiarity with Big Data technologies and SQL databases. Experience with CI/CD tools (Git, GitHub, Jenkins). Professional English (B2+). Preferred Qualifications: Experience with Python, Bash scripting, or Airflow/Control-M. Familiarity with Cloud platforms (Azure, AWS, Databricks, S3, Kubernetes, Docker, EMR). Understanding basics of cybersecurity/quality assurance (Sonar). Knowledge of software development lifecycle tools (HP ALM). Strong analytical and problem-solving skills. How to Apply:If you are interested in this opportunity, please submit your resume. We look forward to hearing from you!