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May 21, 2026

Systems Software Developer

Senior • On-site

Chantilly, VA

Closure Technologies is seeking a Systems Software Developer who will leverage their development skills and experience to support the successful ingestion, cleansing, transformation, loading, and display of significant amounts of data, with a particular focus on Cloud data

Clearance Requirement: TS/SCI with Polygraph

Key Responsibilities:

  • Designing and implementing large-scale ingest systems in a Big Data environment
  • Optimizing all stages of the data lifecycle, from initial planning, to ingest, through final display and beyond
  • Designing and implementing data extraction, cleansing, transformation, loading, and replication/distribution
  • Developing custom solutions/code to ingest and exploit new and existing data sources
  • Developing data profiling, deduping logic, and matching logic for analysis
  • Organizing and maintaining data layer documentation, so others are able to understand and use it
  • Collaborating with teammates, other service providers, vendors, and users to develop new and more efficient methods
  • Effectively articulating the risks and constraints associated with software solutions, based on environment

Required Qualifications:

  • Strong software development experience, to include significant Java development, data analysis/parsing, and SQL/database experience
  • Strong experience with the full data lifecycle, from ingest through display, in a Big Data environment
  • Strong experience with Java-related technologies, such as JDK, J2EE, EJB, JDBC, and/or Spring, and experience with RESTful APIs
  • Experience developing and performing ETL tasks in Linux and/or Cloud environments

Preferred Qualifications:

  • Experience with Hadoop, Hbase, MapReduce
  • Experience with Elasticsearch
  • Experience working in a mission environment and/or with many different types of data