Senior PySpark Developer (Cloudera, Iceberg, Airflow & AWS) - Tieto Tech Consulting (m/f/d)

Employment: Full-time Experience level: Mid-Senior Level Job Description Required Qualifications Bachelor's degree in Computer Science, Information Systems, Engineering, or related field. 10+ years of IT experience with 6+ years in Data Engineering and Big Data development. Strong hands-on experience with PySpark and Spark-based data processing. Experience developing data pipelines on Cloudera Data Platform (CDP) . Strong knowledge of Apache Iceberg table architecture and data lake concepts. Experience designing and managing workflows using Apache Airflow . Experience with SQL and data modeling techniques. Strong understanding of ETL/ELT development and data transformation frameworks. Experience working with large-scale structured and unstructured datasets. Knowledge of Git, CI/CD pipelines, and DevOps practices. Strong analytical, troubleshooting, and problem-solving skills. Excellent communication and collaboration skills.   Preferred Qualifications Experience with AWS services including S3, Glue, Lambda, ECS/EKS, EMR, RDS, IAM, and CloudWatch . Experience building cloud-native data lake and Lakehouse solutions. Strong knowledge of data partitioning, performance tuning, and query optimization. Experience with Kafka or event-driven data processing frameworks. Experience with Java or Python application development. Experience implementing data quality, metadata, and data governance solutions. Healthcare, Medicaid, Claims Processing, or Insurance industry experience. Experience working in Agile development environments. AWS Certification and/or Cloudera Certification preferred. Experience supporting large-scale cloud migration and modernization initiatives.   Role Level: Senior Developer / Lead Developer   Experience: 10-12+ years overall with strong expertise in PySpark, Cloudera CDP, Apache Iceberg, Airflow, and AWS Data Engineering. Additional Information At Tieto, we believe in the power of diversity, equity, and inclusion. We encourage applicants of all backgrounds, genders (m/f/d), and walks of life to join our team, as we believe that this fosters an inspiring workplace and fuels innovation. Our commitment to openness, trust, and diversity is at the heart of our mission to create digital futures that benefit businesses, societies, and humanity. Diversity, equity and inclusion | Sustainability | Tieto Stay alert to recruitment scams: • Tieto only communicates via  @tieto.com  email addresses. • We never ask candidates to pay fees or share financial details during recruitment. • If you receive a suspicious message claiming to be from Tieto, don't respond — verify it via our official careers site. • For more information visit  Important Advisory Regarding Recruitment Fraud | Tieto Blog