The Principal Software Engineer will play a key role in shaping the future of advertiser experiences within Microsoft Advertising by driving technical innovation and collaborating with engineering, product, and design teams. This position focuses on leading the architecture and implementation of high-impact initiatives that enhance platform scalability, performance, and user experience. The role is ideal for engineers who enjoy solving complex technical challenges and influencing cross-team impact through technical leadership. The engineer will work at the intersection of large-scale web applications and AI-powered development.

• Bachelor's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.
• Ability to meet Microsoft, customer and/or government security screening requirements.

• Lead the architecture, design, and implementation of high-impact engineering initiatives across Microsoft Advertising's advertiser-facing experiences.
• Drive technical solutions that improve platform scalability, performance, reliability, maintainability, and engineering efficiency.
• Partner with engineering, product, and design teams to deliver innovative customer experiences and solve complex technical challenges.
• Influence architectural direction across multiple teams through technical expertise, collaboration, and solid engineering judgment.
• Design and evolve shared platform capabilities, frameworks, and development patterns that enable teams to build and deliver products more effectively.
• Advance AI-enabled engineering practices that improve developer productivity, accelerate innovation, and enhance software quality.
• Lead technical investigations, architecture reviews, and design discussions for business-critical initiatives and platform investments.
• Drive improvements in frontend architecture, performance, accessibility, observability, and engineering excellence across the platform.
• Mentor and collaborate with engineers across teams, sharing knowledge and raising the overall technical bar of the organization.
• Contribute to long-term technical strategy and identify opportunities to modernize systems, reduce complexity, and improve customer outcomes.

• Employees at Microsoft are often offered comprehensive, “world-class” benefits—including health and mental-wellness programs, competitive pay with bonuses and stock awards, and retirement/savings options. Time-off and flexibility are common, with generous vacation and holidays, parental and caregiver leave, and flexible work schedules, alongside learning support, employee resource groups, product discounts, and matching-gifts/volunteering programs. Specific benefits can vary by region.