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# Software Engineer, Sr

- **Company:** Parsons Corporation
- **Location:** Herndon, VA, United States
- **Experience:** Expert
- **Salary:** $112,200.0 - $196,400.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, User Authentication, Automation of Tests, Signals Intelligence, Continuous Integration, D3.Js, Data Fusion, Data Visualization, Relational Databases, Software Debugging, Django Web Framework, Graph Database, Design of User Interfaces, Intelligence Analysis, Data Intelligence, JSON, Python (Programming Language), PostgreSQL, Machine Learning, Metadata, NoSQL, Parsing, Reverse Engineering, Secure Coding, Software Engineering, Software Systems, TypeScript, Unstructured Data, Extensible Markup Language (XML), Data Processing, Data Classification, Data Ingestion, ReactJS, Large Language Models, Cyber Threat Analysis, Backend, Git, Fastapi, Containerization, AI Platforms, Linux Development, Kubernetes, Integration Frameworks, Plotly, Data Management, Entity Resolution, Restful APIs, Cyber Warfare, Docker, Vulnerability Analysis
- **Published:** October 3, 2026
- **Apply:** https://dejobs.org/x/x/ED638EADA54248348C3BFE67613AF224/job/

## About the Role

* U.S. citizenship and eligibility for a TS/SCI security clearance
 * Bachelor's Degree and a minimum of 8 years of related professional experience
 * Experience developing full-stack applications using Python and React/TypeScript
 * Experience developing backend services and RESTful APIs using frameworks such as FastAPI, Django, or equivalent technologies
 * Experience developing interactive user interfaces and dashboards using React and modern JavaScript/TypeScript frameworks
 * Experience working with structured data formats such as JSON and XML and relational databases such as PostgreSQL
 * Familiarity with data ingestion, parsing, transformation, and integration across multiple data sources
 * Experience using Git, software debugging tools, and automated testing frameworks.
 * Familiarity with Linux development environments and containerization technologies such as Docker
 * Understanding of software engineering principles, secure coding practices, and Agile development methodologies
 * Strong analytical and problem-solving skills and the ability to collaborate effectively with multidisciplinary technical teams

What Desired Skills You'll Bring

 * TS/SCI clearance is preferred
 * Experience developing software supporting SIGINT, intelligence analysis, cyber operations, or other national security missions
 * Familiarity with reverse engineering, vulnerability research, or cyber threat analysis.
 * Experience with data fusion, entity resolution, record correlation, or graph-based data relationships
 * Familiarity with graph databases, NoSQL databases, or modern data processing frameworks.
 * Experience developing data visualization interfaces using libraries such as D3.js, Plotly, or equivalent technologies
 * Experience working with unstructured data, including text extraction, metadata enrichment, and automated data classification
 * Familiarity with AI/ML technologies, Large Language Models (LLMs), and integration with external AI platforms through APIs
 * Experience with Kubernetes, CI/CD pipelines, and automated software deployment
 * Familiarity with cybersecurity best practices, authentication, authorization, and secure API development

## Description

Parsons is looking for a talented Full Stack Software Engineer to join our growing team supporting a high-priority national security mission. In this role, you will contribute to the design, development, integration, and testing of an advanced Signals Intelligence (SIGINT) data fusion and analytics platform.

The platform integrates multiple intelligence data sources into a unified operational environment, leveraging modern data processing technologies, APIs, and advanced visualization capabilities to support intelligence analysis, vulnerability research, and collaborative mission planning.

This position offers an opportunity to work on cutting-edge intelligence integration projects, developing secure, scalable, and high-performance solutions that support critical national security missions.

This position offers a hybrid work schedule

What You'll be Doing:

 * You will be an integral part of our team solving challenging mission-focused problems to meet customer needs. You will participate on an Agile team to develop well-designed, testable, and efficient code. You will collaborate with team members in person or remotely, ask smart questions, take risks, and champion innovative solutions.
 * Design, develop, and maintain full-stack software applications using Python, React, and TypeScript to integrate, process, and correlate structured and unstructured intelligence data through APIs and backend services.
 * Develop interactive dashboards, custom interfaces, and data visualization capabilities to support SIGINT analysis, vulnerability research, and collaborative mission workflows, while enabling integration with external AI platforms.
 * Collaborate with mission stakeholders and engineering teams to deliver secure, scalable, and reliable software solutions through Agile development practices, automated testing, and continuous integration.


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