Senior C/C++ Engineer — High-Performance Systems

LaunchCode; St. Louis (MO); On-site; USD 120,000 - 180,000; Full time

Job summary

LaunchCode in St. Louis, Missouri is seeking a Senior Software Engineer with strong C/C++ experience to join a team building and enhancing high-performance software.

This role focuses on performance, reliability, and precision, delivering mission-critical applications while collaborating with experienced engineers in an Agile environment that values quality, automation, and continuous improvement. You will design, test, and optimize complex systems, contribute to test frameworks with Google

Qualifications

• Bachelor's degree in computer science, Software Engineering, Information Technology, Mathematics, or related field, or equivalent practical experience.
• Strong C/C++ development experience and ability to produce high-performance software.
• Java experience is a plus.
• Experience building, testing, debugging, and maintaining complex software.
• Familiarity with testing methodologies (unit, integration, system, functional) and test plans.
• Experience with Google Test for unit testing.
• Proficiency with Git and scripting (Shell).
• Knowledge of CI/CD and Agile development.
• Solid fundamentals in algorithms, data structures, operating systems, networking, and distributed systems.

Responsibilities

• Design, develop, enhance, and maintain high-performance C/C++ applications.
• Build reliable software for systems with demanding performance and availability requirements.
• Develop unit tests using Google Test and contribute to automated testing frameworks.
• Translate technical requirements and design specifications into test plans and implementation strategies.
• Perform functional, integration, system, and user acceptance testing to ensure software quality.
• Analyze logs, traces, and system behavior to identify issues and validate application performance.
• Troubleshoot complex defects, investigate root causes, and implement lasting solutions.
• Support production readiness, incident resolution, and ongoing system reliability.
• Identify opportunities to improve performance, test automation, and engineering efficiency.
• Participate in code reviews, technical design discussions, sprint planning, and other Agile activities.
• Collaborate with engineers, architects, product owners, and cross-functional partners.
• Create technical documentation and share knowledge to help strengthen the engineering team.

Skills

C/C++ development

Java experience

Testing

Git

Shell scripting

CI/CD

Agile

Distributed systems

Education

Bachelor's degree in CS/Software Engineering/IT/Mathematics or related field

Tools

Google Test

Job description

LaunchCode in St. Louis, Missouri is seeking a Senior Software Engineer with strong C/C++ experience to join a team building and enhancing high-performance software.

This role focuses on performance, reliability, and precision, delivering mission-critical applications while collaborating with experienced engineers in an Agile environment that values quality, automation, and continuous improvement. You will design, test, and optimize complex systems, contribute to test frameworks with Google