Software Engineer 3 (Interface Design & Data Visualization)

Cornerstone Defense LLC; Maryland; On-site; USD 190,000 - 210,000; Full time

Benefits offered by this job

Medical, Dental and Vision Plans

Generous PTO Policy

401(k)

Job summary

Cornerstone Defense in Annapolis Junction, MD is seeking a Software Engineer 3 to enhance a Streamlit-based UI prototype and evolve it into a scalable interface for external use. You will design and implement features that visualize complex data and support decision making within a defense context.

The role requires strong Python and front-end skills, experience with TypeScript/HTML/CSS, and collaboration with cross-functional teams. A TS/SCI with polygraph clearance is required for application.

Qualifications

• Master’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
• Bachelor’s degree in computer science or related discipline from an accredited college or university, plus seven (7) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
• OR
• Nine (9) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.

Responsibilities

• Enhance a UI prototype developed with Streamlit and build it into an interface for future external availability.
• Collaborate with back-end and UI teams to deliver polished data visualization features.
• Ensure performance and accessibility considerations for the interface.

Skills

Linux CLI

Bash scripting

Python

Java

Streamlit

TypeScript

HTML

CSS

JavaScript frameworks

Apache Spark

Jupyter Notebook

Pandas/NumPy

Parquet/JSON/CSV/XML

Git

Education

Master’s degree in CS or related

Bachelor’s degree in CS or related

Nine years SWE experience

Tools

Streamlit

React/Angular/Vue

Linux tools

Jupyter Notebook

SQL (MySQL/PostgreSQL)

Apache Airflow

Slurm

Atlassian JIRA/Confluence

Job description

Title: Software Engineer 3 (Interface Design & Data Visualization)

Location: Annapolis Junction, MD

Compensation Range: $190 -$210K

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

• 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

Summary:

The Software Engineer shall be responsible for enhancing a UI prototype that was developed using Streamlit and build it into an interface with future plans to make the interface available external to the corporate enterprise.

Qualifications:

• Master’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
• Bachelor’s degree in computer science or related discipline from an accredited college or university, plus seven (7) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
• OR
• Nine (9) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.

Required Skills:

• Experience using the Linux CLI and Linux tools
• Experience developing Bash scripts to automate manual processes
• Recent software development experience using Python and Java
• Familiar with Streamlit, a Python framework for building interactive web applications
• Experience developing front-end applications using TypeScript, HTML, and CSS
• Experience with JavaScript frameworks such as React, Angular, and Vue
• Familiar with Distributed Big Data processing engines including Apache Spark
• Experience using Jupyter Notebook
• Experience with data wrangling and preprocessing using tools such as pandas, NumPy
• Experience working with structured, semi-structured, and unstructured data such as Parquet, JSON, CSV, XML
• Familiarity with data quality concepts, data validation, and anomaly detection
• Experience with Git Source Control System

Desired Skills:

• Experience using Apache Airflow (DAG design, scheduling, operators, sensors) to orchestrate, schedule, and monitor complex workflows
• Experience 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)