Microsoft
Principal Software Engineer, Online Ads Systems
$143K–$304K
Redmond, WA · On-site · Principal · Full-time · Posted Aug 21, 2026
- Experience
- 6+ years of technical engineering experience; preferred experience includes 5+ years in the listed areas.
- Education
- Bachelor's Degree in Computer Science or related technical field, or equivalent experience.
About the job
Build and operate scalable, low-latency online advertising services that host machine-learning models and support Bing Ads.
What you'll do
- Design and implement features and system improvements based on Bing Ads requirements, including security, compliance, testing, and code quality.
- Monitor and maintain live services on a rotational on-call basis; investigate issues and respond within SLA timeframes.
- Analyze distributed-system performance and capacity bottlenecks, and improve latency and capacity for online ad serving.
What they ask for
- Bachelor's Degree in Computer Science or related technical field, or equivalent experience.
- 6+ years of technical engineering experience coding in languages including C, C++, C#, Java, JavaScript, or Python.
Nice to have
- 5+ years of experience in distributed system engineering and multi-threading programming; experience in high-performance programming.
- 5+ years of experience in machine learning and online system design, implementation and qualification; profiling distributed systems; or Azure.
Pay
USD $142,800 - $274,800 per year (base salary); USD $188,000 - $304,200 per year (base salary)
Tools
C, C++, C#, Java, JavaScript, Python, Azure
AI focus
Develop scalable services hosting state-of-the-art machine-learning models for online advertising; preferred experience includes machine learning and online system design, implementation and qualification.
Model-written summary · the original posting is authoritative