Java Developer

About Our Company Delmock Technologies, Inc. (DTI), is a leading HUBZone business in Baltimore, known for delivering sophisticated IT (Information Technology) and Health solutions with a commitment to ethics, expertise, and superior service. Actively engaged in the local community, DTI creates opportunities for talented residents while maintaining a stellar reputation as an award‑winning contractor, earning accolades like the Government Choice Award for IRS (Internal Revenue Service) Systems Modernizations.Clearance: Active IRS MBI Clearance is required to be considered for this position. Location: This position is remote.Role Delmock Technologies, Inc. is seeking an intermediate‑level Java Developer to convert existing PySpark codebases into optimized Java‑based Spark applications. This role includes developing, refactoring, and maintaining scalable data processing solutions developed on the Databricks platform (or similar Spark execution environments). The developer will collaborate with IRS stakeholders and technical teams to ensure accurate translation of logic, high performance of Spark jobs, and compliance with federal security, privacy, and governance standards.ResponsibilitiesConvert existing PySpark applications into equivalent, efficient Java Spark implementations.Design, develop, and maintain scalable Spark‑based data pipelines.Implement data processing logic using Java 8+ with best practices in OOP and functional programming.Integrate solutions with IRS datasets including IRMF, BMF, and IMF.Optimize Spark jobs for performance, maintainability, and cost‑efficiency.Collaborate across development, data engineering, and architecture teams.Troubleshoot and debug Spark workloads in distributed environments.Ensure compliance with IRS data handling, security, and governance policies.Minimum RequirementsBachelor’s degree in Computer Science, Information Systems, or related fieldTechnical Experience (5+ Years Total Professional Experience)Knowledge of IRS Data SystemsStrong expertise in Java 8+Proficiency with Spark Core, Spark SQL, and DataFrame/Dataset APIsFamiliarity with HDFS, Hive, or HBaseExperience with S3, KafkaKnowledge of Parquet, Avro, ORC formatsExperience building and supporting ETL pipelinesExperience with Databricks, or EMRCI/CD experience (Jenkins, GitHub Actions)Proficient with GitExperience with Maven or GradleExperience with unit testing using JUnit or TestNGExperience working in Agile/Scrum environmentsPreferred/Nice To Have SkillsGFE, e.g. IRS‑issued laptopExperience with PySpark‑to‑Java Spark translationMonitoring tools such as Grafana, Prometheus, Datadog, or Spark logsExperience with Databricks, Google Dataproc, or similar Spark ecosystemsKnowledge of Delta Lake or Apache IcebergRecently ranked as high as #3 among HUBZone Companies in a GOVWIN survey, DTI offers a dynamic environment for those passionate about impactful projects, community involvement, and contributing to top‑ranking Federal and State Commissionaires project support teams.At DTI, we balance continuous growth and innovation with a strong dedication to corporate social responsibility. Join our talented team and be part of a company that values both professional excellence and community impact. Explore the exciting career opportunities awaiting you at DTI!DTI is committed to hiring and maintaining a diverse workforce. We are an equal opportunity employer making decisions without regard to race, color, religion, sex, national origin, age, veteran status, disability, or any other protected class.#J-18808-Ljbffr