Java Softwareentwickler (m/w/d) remote

Role: Senior Java/Spark Developer - Remote (Should be inside US to apply for this role)
Need US CITIZENSHIP because of the nature of the client and job plus undergo security clearance
Senior Java/Spark Developer:
Design, code, and maintain applications and data processing solutions using Java, Kotlin, Scala, and Apache Spark.
Design and implement data loading and transformation for large datasets. Process data in various formats and compression codecs.
Use Spark SQL, DataFrames, and Datasets for efficient data manipulation and querying within Spark applications.
Optimize Spark applications, including tuning configurations, managing memory, and fine-tuning data serialization and task partitioning.

5+ years of professional software engineering experience, with a strong focus on JVM-based development and large-scale data processing solutions.

• Hands-on experience developing applications using Java and Kotlin, with a solid understanding of object-oriented and functional programming concepts.
• Strong experience designing, developing, and maintaining Apache Spark-based data pipelines and processing jobs.
• Proficiency with Spark SQL, DataFrames, distributed data processing, and performance optimization for high-volume data workloads.
• Solid understanding of big data engineering principles, distributed computing models, and scalable application design.
• Strong SQL skills and experience working with relational database systems.
• Experience building or supporting cloud-based data solutions within AWS environments.