Software Engineer 2 (Data Transformation & Analytics)

Cornerstone Defense LLC; Annapolis (MD); On-site; USD 170,000 - 190,000; Full time

Benefits offered by this job

Medical, Dental and Vision Plans

Generous PTO Policy

401(k)

HSA and FSA options

Life and Disability Insurance

Tuition Reimbursement and Training

Perks at Work Discount Program

Referral Program

Leads Generation Program

CollegeAmerica 529

Fitness Reimbursement Program

Travel Assistance

Norton Lifelock Benefit Solutions

Life Planning Financial & Legal Servic

Job summary

Cornerstone Defense LLC is seeking a Software Engineer 2 focused on Data Transformation & Analytics in Annapolis Junction, MD, with an active TS/SCI w/ Polygraph clearance required to apply. The role centers on transforming raw, unstructured data into clean, high-quality datasets for advanced analytics and decision-making.

Compensation ranges from $170K to $190K annually, reflecting seniority and security requirements.

Qualifications

• Master’s degree in computer science or related discipline, plus 3 years SWE experience; or Bachelor’s degree plus 5 years; or 7 years SWE experience.

Responsibilities

• Identify ways to create repeatable data transformation capabilities.
• Transform raw, complex, unstructured data into clean, analysis-ready datasets.
• Support advanced analytics, predictive modeling, and data-driven decisions across the organization.

Skills

Linux CLI

Bash scripting

Python

Apache Spark

Jupyter Notebook

Pandas

NumPy

Data wrangling

Data quality

Data validation

Anomaly detection

Git

Education

Master's degree in computer science or related discipline

Bachelor's degree in computer science or related discipline

7+ years of SWE experience

Tools

Jira

Confluence

Slurm

Apache Airflow

Job description

Title: Software Engineer 2 (Data Transformation & Analytics)

Location: Annapolis Junction, MD

Compensation Range: $170 -$190K

*Clearance:* *Active TS/SCI w/ Polygraph needed to apply *

Company Overview

Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Benefits Overview

Cornerstone Defense offers a very comprehensive benefits package including, but not limited to:

• Medical, Dental and Vision Plans
• Generous PTO Policy
• 401(k)
• HSA and FSA options
• Life and Disability Insurance
• Tuition Reimbursement and Training
• Perks at Work Discount Program
• Referral Program
• Leads Generation Program
• CollegeAmerica 529
• Fitness Reimbursement Program
• Travel Assistance
• Norton Lifelock Benefit Solutions
• Life Planning Financial & Legal Services

Position Description

The Software Engineer shall be responsible for identifying ways to create consistent and repeatable capabilities including transforming raw, complex, and often unstructured data into clean, reliable, and high-quality analysis-ready datasets that support advanced analytics, predictive modeling, and data-driven decision-making across the organization.

SWE-2 Qualifications

• Master’s degree in computer science or related discipline from an accredited college or university, plus three (3) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. OR
• Bachelor’s degree in computer science or related discipline from an accredited college or university, plus five (5) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. OR
• Seven (7) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.

Position Required Skills

• Experience using the Linux CLI and Linux tools
• Experience developing Bash scripts to automate manual processes
• Recent software development experience using Python
• Familiar with Distributed Big Data processing engines including Apache Spark
• Experience using Jupyter Notebook
• Experience with data wrangling and preprocessing tools such as pandas and NumPy
• Experience working with structured, semi-structured, and unstructured data
• Familiarity with data quality concepts, data validation, and anomaly detection
• Experience with Git Source Control System

Position Desired Skills

• Familiar with Apache Airflow (DAG design, scheduling, operators, sensors) to orchestrate, schedule, and monitor complex workflows
• Familiar with SQL technologies such as MySQL, MariaDB, and PostgreSQL for querying, joining, and aggregating large datasets
• Familiar with HPC Job Scheduling tools including Slurm

Experience using the Atlassian Tool Suite (JIRA, Confluence)