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 RogueThink

RogueThink 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 DevOps pipelines and tooling.

Why Join RogueThink

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 RogueThink

At RogueThink, 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, company performance, and program management recommendations.

Retirement Plans

Our 401(k) Matching program provides dollar-for-dollar matching on the first 6% of employee contributions to a traditional or Roth 401(k) through Vanguard.

Employee Referral Bonuses

We value our employees' trusted recommendations. To recognize these referrals:

• $8,000 bonus for successfully hired TS/SCI-cleared candidates
• $5,000 bonus for all other successful referrals

Paid Time Off (PTO)

RogueThink offers competitive PTO policies that consider both program requirements and employee seniority.

Observed Federal Holidays

We observe the following holidays:

• New Year's Day
• Martin Luther King Jr. Day
• Presidents Day
• Memorial Day
• Independence Day
• Labor Day
• Columbus Day
• Veterans Day
• Thanksgiving Day
• Christmas Day

Insurance Coverage

We offer comprehensive insurance options, including:

• Health, Dental, and Vision Insurance
• Disability Insurance
• Accident and Critical Illness Insurance
• Life Insurance

Leave Policies

• Family Leave: Five paid days following the birth or adoption of a child
• Bereavement Leave: Three paid days for the loss of an immediate family member

Training and Development

We invest in our people. RogueThink offers a combination of online and in-person training to ensure our workforce stays ahead of industry trends and evolving technologies.

Educational Assistance

We support your professional and continuing education goals by offering tuition assistance for eligible programs.

Equal Opportunity Employer: RogueThink is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive work environment for all employees.