Senior Java Backend Engineer | TS/SCI Clearance

Cornerstone Defense LLC; Hanover (MD); On-site; USD 235,000 - 255,000; Full time

Job summary

Cornerstone Defense LLC is seeking an Expert Applications Developer to design, develop, and maintain backend libraries and integration services. The role emphasizes Java with occasional Python, focusing on data ingestion, transformation, and standardization across multiple applications.

Responsibilities include MongoDB administration, Linux server tasks, and participation in architecture decisions. Strong Java expertise and familiarity with Python are essential for success.

Qualifications

• Bachelor's or higher in a relevant field; military substitute possible.
• 12+ years with a Bachelor’s, or 10+ with a Master’s in listed domains.
• Experience in C/C++/Java and Unix/Linux environments.
• Strong Java expertise with Python familiarity; Linux/MongoDB admin skills.

Responsibilities

• Design, develop, and maintain backend libraries and services.
• Implement data ingestion, transformation, and standardization logic.
• Develop Java-based solutions; Python support as needed.
• Create shared libraries for common data formats.
• Administer MongoDB and perform Linux system tasks.
• Collaborate via Git workflows and code reviews.

Skills

Java

Python

Linux

MongoDB

Backend development

Data transformation

REST APIs

Software architecture

Education

Bachelor's degree in EE/CS/CE/Math

Master's degree in CS/CE

Tools

Git

RPM

Unix/Linux

Job description

Cornerstone Defense LLC is seeking an Expert Applications Developer to design, develop, and maintain backend libraries and integration services. The role emphasizes Java with occasional Python, focusing on data ingestion, transformation, and standardization across multiple applications.

Responsibilities include MongoDB administration, Linux server tasks, and participation in architecture decisions. Strong Java expertise and familiarity with Python are essential for success.