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# Sr. Software Engineer - Back-End

- **Company:** VTG LLC
- **Location:** Chantilly, VA, United States
- **Experience:** Expert
- **Salary:** $180,000 - $240,000
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Amazon Web Services, Applications Architecture, Business Logic, Automation of Tests, Client Server Models, Network Analysis, Computer Networks, System Configuration, Software Debugging, Linux, Python (Programming Language), Linux System Administration, Unix Shell, Shell Script, Software Engineering, System Testing, AWS Cdk, Backend
- **Published:** November 3, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9285254/sr-software-engineer-back-end

## About the Role

* 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.

## Description

* 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.