Software Engineer 2 (Data Transformation & Analytics) with Security Clearance

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

Benefits offered by this job

Medical, dental and vision plans

401(k)

Tuition reimbursement

Perks at Work Discount Program

Travel assistance

Job summary

Cornerstone Defense LLC is seeking a Software Engineer 2 focused on data transformation and analytics. The role centers on turning raw, structured and unstructured data into reliable, analytics-ready datasets to support advanced modeling and data-driven decisions.

You will leverage Python, Spark, Jupyter and Git to build robust data pipelines. The position requires TS/SCI with polygraph to apply, a strong data background, and collaboration across teams to meet mission-driven goals in Annapolis

Qualifications

• Experience transforming raw, complex data into clean, analysis-ready datasets.
• Proficiency with Python and distributed data processing (Spark).
• Strong background in data wrangling, validation, and anomaly detection.

Responsibilities

• Transform data into repeatable, reliable datasets to support advanced analytics.
• Develop data pipelines and analytics-ready outputs for modeling and decision making.
• Collaborate with data scientists to enable predictive analytics.
• Maintain versioned code and data quality across datasets.

Skills

Linux CLI

Bash scripting

Python

Apache Spark

Jupyter Notebook

Pandas

NumPy

Data wrangling

Data quality concepts

Git

Education

Master's degree in computer science or related discipline

Bachelor's degree in computer science or related discipline

7+ years SWE experience

Tools

Jupyter Notebook

Git

Pandas

NumPy

Bash

Spark

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)