Principal Cyber Software Engineer Security Clearance

Position: Principal Cyber Software Engineer with Security Clearance
Senior Principal Cyber Software Engineer

Location:

Chantilly, VA (On-Site / Customer Site)
Clearance:
Active Secret clearance required; TS/SCI with polygraph preferred

Employment Type:

Full-Time About Rogue Think
Rogue Think is a forward-thinking IT services provider supporting mission-critical federal programs. We deliver secure, high-impact technology solutions in classified environments while fostering a culture of integrity, accountability, and technical excellence.

Position Overview
As a Senior Principal Cyber Software Engineer, you will support a mission-critical federal program focused on the design, development, and delivery of high-quality software solutions, with a strong emphasis on mobile and platform-level development. You will be responsible for defending architectural decisions in rigorous technical reviews and effectively communicating complex technical concepts to engineering teams and customer leadership. Your work will play a critical role in shaping mission direction and long-term technical success.

Key Responsibilities

• Design, develop, test, and deliver secure software solutions supporting mission objectives.

• Lead and contribute across the full software development lifecycle (SDLC).

• Develop applications for mobile platforms, including Android-based environments.

• Defend software architecture and design decisions in formal technical reviews.

• Collaborate with cross-functional teams, including cybersecurity and systems engineering.

• Produce and maintain high-quality software design and technical documentation.

• Support modernization, sustainment, and enhancement of existing systems.

• Provide technical leadership, code reviews, and mentorship to junior engineers.

• Operate effectively within Agile development environments.

Required Qualifications

• Active Secret security clearance; clearance must be in place by the start date and remain active throughout employment.

• Bachelor’s degree with a minimum of 8 years of professional software development experience; or Master’s degree with 6 years; or PhD with 4 years.

• Proficiency in one or more programming languages, including C, Rust, Java, Kotlin, C++, C#, or Python.

• Experience developing software on Agile teams.

• Experience developing applications for mobile platforms.

• Strong understanding of cybersecurity fundamentals.

• Strong understanding of the software development lifecycle (SDLC).

• Experience writing and maintaining software design documentation.

Preferred Qualifications

• Active Top Secret / SCI clearance with polygraph.

• Demonstrated leadership of software development teams and technical initiatives.

• In-depth understanding of cryptography best practices and secure software design.

• Advanced knowledge of Android and Linux system internals.

• Background in Android or Linux kernel and driver development.

• Familiarity with reverse engineering tools such as Ghidra or IDA Pro.

• Proven capability designing embedded software systems.

• Hands-on experience developing Flutter applications.

• Experience managing Linux virtual machines and virtualized environments.

• Working knowledge of Microsoft Azure Dev Ops pipelines and tooling. Why Join Rogue Think
You will work on mission-critical federal programs that directly support national security and government transformation while collaborating with a high-performance engineering team that values innovation, autonomy, and technical excellence. This role provides access to secure development environments, exposure to emerging technologies, and meaningful opportunities for professional growth, including supported technical training, certifications, and clearance upgrades. Benefits at Rogue Think
At Rogue Think, we believe our people are our greatest strength. We are committed to creating a supportive, rewarding, and growth-oriented environment. Our benefits reflect that commitment, with offerings designed to support your personal and professional well-being. Compensation
We offer competitive compensation packages that reflect our core values of integrity, intelligence, and passion. In addition, performance bonuses are available to all employees and are based on individual contributions,…