Software Engineer - C++

We are seeking a mid- to senior-level C++ Software Engineer to develop high-assurance cryptographic systems. This is a hands-on C++ development role focused on development of system services, APIs, business logic, and Qt-based user interface components. The ideal candidate brings strong C++ skills with an emphasis on code quality, security, and reliable system design. This position is full-time and on-site in San Diego, CA.

Responsibilities

• Design, develop, and maintain high-assurance software systems in C++
• Develop Qt-based user interface components and supporting application logic
• Build and integrate secure communications interfaces, APIs, and system services
• Develop modular, maintainable software aligned with system and security requirements
• Participate in architecture discussions, code reviews, and technical design reviews
• Develop automated tests and contribute to CI/CD workflows
• ·Collaborate closely with engineering, security, and systems teams

Desired Background

· BS in Computer Science, Engineering, or related field (or equivalent experience)

· 3–10+ years of professional software development experience

· Strong proficiency in C++

· Experience developing on Linux/Unix systems

· Experience with Git-based version control

· Familiarity with networking fundamentals (TCP/IP, TLS,

· Experience working in Agile/Scrum environments

· Strong written and verbal communication skills

Preferred Experience (any subset)

· Experience with embedded or resource-constrained systems

· Experience with UI frameworks (Qt preferred)

· Experience developing RESTful services or backend systems

· Familiarity with cryptographic concepts or secure communications

Additional Details

• Full-time, on-site in San Diego
• U.S. citizenship required
• Active Secret clearance is required

Company Description

Founded in 2018, TrustThink is a cybersecurity engineering firm that designs, builds, and secures mission-critical systems. We specialize in environments where software, communications, cryptography, and physical systems come together, including defense platforms, connected transportation, autonomous systems, and other safety-critical technologies.

Our teams solve challenging engineering problems involving secure communications, cryptographic key management, high-assurance software, and resilient system architectures. From early architecture and prototyping through software development, integration, and testing, we help turn advanced security concepts into systems that operate in real-world mission environments.