Software Engineer (C#, Java)

About The Company

GitHub is the world’s leading platform for agentic software development — powered by Copilot to build, scale, and deliver secure software. With over 180 million developers, including more than 90% of the Fortune 100 companies, GitHub provides a collaborative environment where developers can innovate and create. More than 77,000 organizations have adopted GitHub Copilot, reflecting its significant impact on modern software engineering. The company is committed to fostering a diverse and inclusive culture, supporting remote work, and enabling developers worldwide to build impactful solutions. GitHub’s mission is to create the space where developers can do their best work, leveraging cutting-edge AI and open-source communities to push the boundaries of technology and innovation.

About The Role

We are seeking a Principal Software Engineer to join GitHub's Core UX organization, which owns the frontend platform behind GitHub.com. This role is pivotal in setting the technical direction for the platform, ensuring it remains fast, accessible, consistent, and reliable at scale. As a systems-level engineer, you will work across multiple teams to address overlapping concerns such as performance, accessibility, UX consistency, and platform availability. Your work will involve evolving a large, actively developed codebase, focusing on migration strategies, cross-team alignment, and architecture enhancements rather than starting from scratch. You will collaborate closely with senior engineering leadership, product managers, and designers to shape the future of GitHub’s frontend infrastructure, driving initiatives that impact millions of developers worldwide. Success in this role involves leading large-scale cross-team projects, establishing scalable patterns, and mentoring engineers to elevate the overall quality and efficiency of frontend development across the organization.

Qualifications

• 9+ years of experience in Software Engineering, Computer Science, or a related technical discipline, with proven experience in maintaining and delivering production software using languages such as C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python.
• OR an Associate’s Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, or related fields with 8+ years of relevant experience in software development.
• OR a Bachelor's Degree in Computer Science or related field with 7+ years of experience in software engineering.
• OR a Master’s Degree in relevant fields with 5+ years of experience.
• OR a Doctorate in relevant fields with 3+ years of experience.
• Equivalent experience will also be considered.

Responsibilities

• Own the technical direction for GitHub’s web UI platform, focusing on performance, accessibility, UX consistency, and platform availability.
• Drive large cross-team initiatives, including platform migrations, sequencing work to ensure seamless transitions without disrupting active development.
• Establish and promote patterns, standards, and paved paths that simplify frontend development and scale across multiple teams.
• Develop architecture and design proposals, evaluate tradeoffs, and build consensus among engineering, product, and design stakeholders.
• Mentor engineers at all levels through code reviews, design discussions, and pairing to elevate team capabilities.
• Represent frontend platform priorities to leadership, advocating for necessary resources and support to achieve strategic goals.
• Collaborate with cross-functional teams to ensure platform evolution aligns with organizational objectives and user needs.

Benefits

• Competitive salary packages and comprehensive health benefits.
• Flexible remote work arrangements, supporting work-life balance.
• Generous learning and development programs to foster continuous growth.
• Opportunities to work on impactful projects that influence millions of developers globally.
• Inclusive and diverse workplace culture that values innovation and collaboration.
• Paid time off, wellness programs, and employee resource groups to support well-being.

Equal Opportunity

GitHub is committed to creating an inclusive environment for all employees. We embrace diversity and do not discriminate against applicants or employees based on gender identity or expression, sexual orientation, race, religion, age, national origin, citizenship, disability, pregnancy status, veteran status, or any other characteristic protected by law. We encourage individuals from all backgrounds to apply and are dedicated to providing accommodations to ensure a fair and accessible interview process for everyone.