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Senior Principal Cyber Software Engineer; iOS

Job in Sterling, Loudoun County, Virginia, 22170, USA
Listing for: Nightwing
Full Time position
Listed on 2026-06-18
Job specializations:
  • IT/Tech
    Cybersecurity
Salary/Wage Range or Industry Benchmark: 125000 - 150000 USD Yearly USD 125000.00 150000.00 YEAR
Job Description & How to Apply Below
Position: Senior Principal Cyber Software Engineer (iOS)

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers’ most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in the intelligence community, defense, civil, and commercial markets.

CODEX

Overview

The Nightwing CODEX (Cyber Offense and Defense Experts) division brings together an elite team of mission-focused industry experts who are well known for their ability to overcome the most advanced technical challenges. The team comprises engineers of multiple disciplines including vulnerability research, reverse engineering, CNO/CNE development, hardware emulation, system engineering, and data analytics. Our engineers do more than just work with cutting-edge technology—they ensure the missions succeed for the customers!

CODEX offices span the nation and offer its engineers the ability to advance their careers through mentorship, training, and an expansive technical portfolio that covers every side of cyber. If you want to be part of a collaborative team that supports challenging, meaningful work that is vital to our national security, apply today!

Senior Principal Cyber Engineer

Cyber Offense and Defense Experts (CODEX) is seeking a cyber engineer to join our team to solve real-time cyber challenges, working on site with our end users in their spaces. Applicants will join a team of developers building high impact native applications for mobile devices, with continuous and meaningful feedback from users. Applicants are expected to integrate reverse engineering results into development products and expand their knowledge of the mobile platform to meet development objectives and customer requirements.

The place of performance for this work is at a customer site in Sterling, Virginia.

Security Clearance

Current TS/SCI clearance is required

Technical Requirements
  • Top Secret Clearance
  • At least 10 years of experience with C/C++ on Unix/Linux platforms
  • Experience developing on iOS
  • Experience with objective C
  • Experience with core Unix features, including
  • Named Pipes / Pipes
  • pThreads
  • Signal Handlers
  • Familiarity with static decompilers (e.g Hex Rays) & disassemblers (e.g. Ghidra)
Desired Experience
  • Experience developing in iOS kernel space
  • Experience with the ARM
    64/ARM
    32 Architecture or other similar platform
  • Experience with Core Foundation framework
  • Experience using virtualization technologies (e.g., Corellium)
  • Experience using Docker
  • Familiarity with Atlassian products (Bitbucket, Bamboo, JIRA, etc.)
  • Familiarity with version control software such as git
  • Developing proof-of-concept exploit software
Education Requirements

Requires a degree in a technical discipline

This position is not relocation eligible but a signing bonus may be an option for the sufficiently qualified candidate.

Nightwing is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.

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Position Requirements
10+ Years work experience
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