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Senior Software Engineer

Parsons

Annapolis Junction, MD · Posted September 30, 2026

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Parsons has filed 5 layoff notices in the last twelve months, covering 94 workers, most recently October 2026. These are public filings with state labor departments, and an open role can sit alongside them. See the filings

Skills this job asks for

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  • Python
  • Linux
  • C#
  • Bash

About the job

In a world of possibilities, pursue one with endless opportunities. Imagine Next!

At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of valuing people, embracing agility, and fostering growth, we cultivate an innovative culture that empowers you to achieve your full potential. Unleash your talent and redefine what’s possible.

Job Description:

Parsons is looking for an amazingly talented Senior Software Engineer to join our team! In this role you will get to designs, modifies, develops, writes, and implements and tests software and software applications

What You'll Be Doing:

Designs, modifies, develops, writes, and implements and tests software and software applications individually or as a team member

Primary role is to lead technical design of software systems as well as lead integration testing of software systems

Supports System Administrators with the installation of software applications

Participates in the testing process through test review and analysis, test witnessing and certification of software

Develops software documentation

Works with system engineering team or software team lead to review and validate system requirements and to derive software requirements from system/subsystem requirements

What Required Skills You'll Bring:

Fifteen [15] years experience in software development and maintenance: ie. software requirements analysis, software design including object oriented analysis and design, coding, testing, documentation, configuration management, user training, deployment, life cycle maintenance. (Relevant Degrees: Electrical/Computer/Software Engineering, Computer Science, Math or Information Systems)

Documented formal training on the Software Engineering Institute (SEI) Capability Maturity Model Integration for Development (CMMI-DEV) model or documented experience working on projects that applied some portions of this model

Documented formal training on DOD standards for software testing and documentation or documented experience working on projects that applied these standards

Active TS/SCI w/Polygraph security clearance required.

What Desired Skills You'll Bring:

Experience in malware analysis and mitigation techniques

Strong understanding of the Windows and Linux Operating System internals and APIs

Knowledge of analyzing shellcode, packed and obfuscated and the associated algorithms a plus

Experience with scripting languages such as Python, Bash, Pearl, etc

Experience in host and network analysis to identify and characterize anomalies and vulnerabilities in the platform

Experience documenting findings in reports and briefings

Security certifications a plus: CISSP, C|EH, CREA, GPEN, GREM, OSCP, OSCE

Experience in x86/x64 assembly and/or C, C++, software reverse engineering, kernel debugging, and/or protocol stacks

Experience developing computer exploits

Experience in Software Reverse Engineering with at least 1 of the following tool or an equivalent: IDAPro, GDB, WinDbg, Immunity/OllyDbg

Security Clearance Requirement: An active Top Secret SCI w/Polygraph security clearance is required for this position.​

This position is part of our Federal Solutions team.

The Federal Solutions segment delivers resources to our US government customers that ensure the success of missions around the globe. Our intelligent employees drive the state of the art as they provide services and solutions in the areas of defense, security, intelligence, infrastructure, and environmental. We promote a culture of excellence and close-knit teams that take pride in delivering, protecting, and sustaining our nation's most critical assets, from Earth to cyberspace. Throughout the company, our people are anticipating what’s next to deliver the solutions our customers need now.

Salary Range: $176,900.00 - $332,400.00

We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as medical, dental, vision, paid time off, 401(k), life insurance, flexible work schedules, and holidays to fit your busy lifestyle!

Parsons is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status or any other protected status.

We truly invest and care about our employee’s wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest—APPLY TODAY!

Parsons is aware of fraudulent recruitment practices. To learn more about recruitment fraud and how to report it, please refer to https://www.parsons.com/fraudulent-recruitment/ .