Sr. Software Engineer, Mac Cloud

GitHub is the world’s leading platform for agentic software development, and they are seeking a Senior Software Engineer to design, build, and ship systems for the macOS platform within GitHub Actions. The role involves addressing infrastructure challenges and improving developer experience at scale.

Responsibilities:

• Design, develop, test and ship high-quality technical solutions that scale across multiple GitHub services with a focus on MacOS support for Actions
• Provide technical leadership, mentorship, pairing opportunities, and code reviews to encourage the growth of others; support teams in producing extensible and maintainable code, ensuring integration with downstream dependencies and adherence to quality standards
• Own and advocate for the health and quality of the systems that the team builds, including participating in on-call for first responder rotations and live incidents
• Design and implement APIs to facilitate seamless integration between software components
• Collaborate with cross-functional teams and partner with stakeholders and lead discussions for technical solutions, including design and cost considerations
• Lead the team in developing comprehensive testing strategies, defining success metrics, and incorporating customer feedback to drive continuous improvement
• Champion security across GitHub Actions by designing and implementing isolation mechanisms for untrusted code execution, ensuring compliance with enterprise security requirements, and partnering with Security teams to protect against vulnerabilities in our services
• Champion operational excellence by improving system reliability, reducing incident response times, and establishing best practices for monitoring, alerting, and runbooks across Actions services

Requirements:

• 6+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR Associate's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 5+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR Bachelor's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 4+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR Master's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 2+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR Doctorate in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field OR equivalent experience
• 2+ years' experience using general purpose programming languages (e.g., Go, Ruby, or a similar language)
• 2+ years' experience in one or more scripting languages (e.g., Bash, Python, or a similar language)
• Experience building or operating CI/CD systems at scale
• Experience developing on MacOS or iOS platforms