Software Engineer II – Cybersecurity & Encryption (DoD Programs)

About the role

AST SpaceMobile and our global partners are building the first and only space-based cellular broadband network to be accessible by standard smartphones. Called SpaceMobile, this ultra-powerful network is being designed to provide connectivity at 4G/5G speeds everywhere on the planet – on land, at sea and in flight.

Position Overview

We are seeking a Software Engineer II – Cybersecurity & Encryption to support the development, integration, and maintenance of secure software solutions for government, defense, and other mission-critical programs. In this role, you will design and implement cybersecurity features, encryption technologies, and secure communications capabilities that protect sensitive data and ensure compliance with rigorous security requirements.

The ideal candidate has a strong background in secure software development, applied cryptography, vulnerability remediation, and cybersecurity best practices. This individual will collaborate closely with software engineers, systems engineers, security professionals, and program stakeholders to deliver secure, reliable, and high-performing solutions.

Key Responsibilities

- Design, develop, and maintain secure software applications and services supporting mission-critical programs.

- Implement and integrate cryptographic algorithms, encryption technologies, and secure communications protocols into software systems.

- Develop and maintain authentication, authorization, access control, and key management capabilities.

- Perform secure code reviews, vulnerability assessments, and remediation activities to address identified security risks.

- Support security compliance activities by implementing and documenting required technical controls aligned with industry and government cybersecurity standards.

- Collaborate with cybersecurity teams to address findings from security assessments, vulnerability scans, and penetration testing activities.

- Participate in the full software development lifecycle, including requirements analysis, design, development, testing, deployment, and sustainment.

- Develop well-structured, maintainable, and testable code using modern programming languages and development tools.

- Support integration activities involving secure computing environments, hardware security technologies, and encrypted communications systems.

- Contribute to technical documentation, design reviews, security assessments, and engineering reviews.

- Support DevSecOps initiatives, including automated security testing, software assurance, and secure deployment processes.

- Research emerging cybersecurity threats, cryptographic technologies, and industry best practices to support continuous improvement efforts.

Qualifications

Education

- Bachelor's degree in computer science, computer engineering, cybersecurity, software engineering, or a related technical discipline.