Sr. Software Engineer - Back-End

Vtgdefense; Chantilly (VA); On-site; USD 180,000 - 240,000; Full time

Job summary

VTG Defense seeks a Senior Software Engineer to lead backend development in a security-cleared environment in Chantilly, VA. You will design, build, and test backend systems using Python and JavaScript, with Linux-based automation and network analysis expertise.

You will also analyze unfamiliar code, reproduce behavior, and implement automated testing and infrastructure-as-code using AWS CDK in a collaborative, fast-paced setting.

Qualifications

• Active TS/SCI with Polygraph required.
• Extensive hands-on software development experience.
• Proficient in Python and JavaScript.
• Experience in at least one additional backend language.
• Experience analyzing unfamiliar code to reproduce behavior.
• Experience developing a software testing harness or continuous testing.
• Experience installing Linux from scratch and developing complex Unix shell scripts.
• Experience analyzing network traffic to understand client/server communications.
• Experience using AWS CDK for infrastructure as code.
• Strong analytical, troubleshooting, and technical problem-solving skills.

Responsibilities

• Design, develop, debug, and maintain backend software and supporting tools.
• Develop applications and automation using Python, JavaScript, and additional backend languages.
• Analyze unfamiliar source code to identify relevant data fields, understand application logic, and reproduce software behavior.
• Build software system testing harnesses or implement continuous testing methodologies to validate functionality and reliability.
• Install and configure Linux environments from scratch to support development and testing.
• Develop and maintain complex Unix shell scripts for automation, configuration, and troubleshooting.
• Analyze network traffic to understand client/server communications, request structures, and application interactions.
• Develop and manage AWS infrastructure as code using AWS CDK.
• Document technical findings, software behavior, testing approaches, and system configurations.

Skills

Python

JavaScript

Linux

Shell scripting

AWS CDK

Network analysis

Testing automation

Backend programming

Tools

AWS CDK

Unix/Linux

Job description

Overview

We are seeking a Senior Software Engineer with extensive development experience to build backend software, analyze existing applications, and develop automated testing capabilities. This role requires proficiency in Python, JavaScript, and at least one additional backend programming language, along with strong Linux, shell scripting, and network analysis skills.

What will you do?

• Design, develop, debug, and maintain backend software and supporting tools.
• Develop applications and automation using Python, JavaScript, and additional backend programming languages.
• Analyze unfamiliar source code to identify relevant data fields, understand application logic, and reproduce software behavior.
• Build software system testing harnesses or implement continuous testing methodologies to validate functionality and reliability.
• Install and configure Linux environments from scratch to support development and testing.

• Develop and maintain complex Unix shell scripts for automation, configuration, and troubleshooting.
• Analyze network traffic to understand client/server communications, request structures, and application interactions.
• Develop and manage AWS infrastructure as code using AWS CDK.
• Document technical findings, software behavior, testing approaches, and system configurations.

Do you have what it takes?

• Active TS/SCI with Polygraph Required.
• Extensive hands-on experience in software development.
• Demonstrated proficiency in Python and JavaScript.
• Ability to program efficiently in at least one additional backend programming language beyond Python and JavaScript.
• Demonstrated experience analyzing unfamiliar software code, extracting relevant fields, and determining how to reproduce its behavior.
• Experience developing a software system testing harness or implementing a continuous testing methodology.
• Demonstrated experience installing Linux from scratch and developing complex Unix shell scripts.
• Experience analyzing network traffic to understand client/server communications and requests.
• Demonstrated experience using AWS Cloud Development Kit (CDK).
• Strong analytical, troubleshooting, and technical problem-solving skills.

Pay Range: VTG’s estimated starting pay range is $180,000-$240,000 annually, which is a general guideline for the geographic location. When extending an offer, VTG also considers work experience, education, skill level, market considerations and may possibly include contractual requirements which may cause an offer to fall outside of this range.