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  require d to  be considered for this position.

Location :   This position is remote.

Role :

Delmock  Technologies, Inc. is seeking  a n intermediate-level Java Developer  to convert existing  P y Spark   c odebases into optimized Java-based Spark applications. This role includes developing, refactoring, and  m a intaining   s calable 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.

Responsibilities :

Convert 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  Requirements :

Bachelor’s degree in Computer Science , Information Systems, or related field

Technical Experience (5+ Years Total Professional Experience)

Knowledge  of IRS Data Systems

Strong  expertise  in Java 8+

Proficiency  with Spark Core, Spark SQL, and  DataFrame / Dataset APIs

Familiarity with HDFS, Hive, or HBase

Experience with S3, Kafka

Knowledge of Parquet, Avro, ORC formats

Experience building and supporting ETL pipelines

Experience with Databricks, or EMR

CI / CD experience (Jenkins, GitHub Actions)

Proficient with Git

Experience with Maven or Gradle

Experience with u nit testing  using  JUnit or TestNG

Experience working in Agile / Scrum environments

Preferred / Nice to Have  Skills :

GFE,  e.g.  IRS-issued laptop

Experience with  PySpark -to-Java Spark translation

Monitoring tools such as Grafana, Prometheus, Datadog, or Spark logs

Experience with Databricks, Google  Dataproc , or similar Spark ecosystems

Knowledge of Delta Lake or Apache Iceberg

Recently 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 team s .

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 .