Principal Software Engineer

What you'll do

• Own long-range architecture of MMS platform including OpenRTB request hot path, auction engines, bidder adapter framework, and experimentation system
• Drive cross-team technical strategy with peer principals across Microsoft Advertising
• Set and enforce engineering standards via design/code reviews, technical RFCs, and mentorship
• Identify and resolve systemic risks in reliability, latency, cost, and correctness
• Design and build highly scalable Go services with strict latency and availability SLAs
• Evolve bidder adapter framework to support new supply types and integration patterns
• Improve auction subsystem including pricing, filtration, bidder selection, and response shaping
• Strengthen experimentation framework for safe high cadence A/B testing
• Improve observability of request path with logging, sampling, metrics, and tracing
• Drive Azure-native deployment and operational excellence across multiple Azure services
• Lead initiatives to reduce cost-per-request, improve cold-start, config-reload, and cross-region failover
• Improve CI/CD processes including canary, progressive rollout, and automated rollback
• Lead org-wide initiatives to improve software delivery across full SDLC
• Contribute to runbooks, deployment documentation, and oncall readiness
• Lead efforts to raise incident response standards and post-incident learning
• Leverage AI dev tools to raise team-wide engineering productivity

Requirements

• Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including C, C++, C#, Java, JavaScript, or Python OR equivalent experience
• Ability to meet Microsoft, customer and/or government security screening requirements including Microsoft Cloud Background Check
• Preferred: Master's Degree in Computer Science or related technical field AND 8+ years technical engineering experience OR Bachelor's Degree AND 12+ years experience
• 6+ years of experience building and operating latency-sensitive backend services with strict SLA requirements
• Deep production experience with Go including profiling, GC tuning, concurrency patterns, and performance-sensitive code
• Hands-on experience with OpenRTB / programmatic advertising including header bidding, real-time bidding, mediation, exchanges, SSPs/DSPs, brand safety, or identity/cookie syncing
• Experience designing or evolving auction systems pricing logic, bidder filtration, dynamic reserve pricing, or floor-price optimization at scale
• Production experience with Kubernetes & Azure services including AKS, ACR, Azure Key Vault, Azure Event Hubs, Azure Blob Storage, Azure Application Insights, and Azure DevOps
• Solid understanding of distributed systems including consistency trade-offs, fault tolerance, distributed caching, and cross-region replication
• Experience designing or scaling experimentation platforms such as A/B testing frameworks, feature flags, or controlled rollout systems
• Experience with observability tools including structured logging, high-cardinality metrics, sampling at scale, and event streaming pipelines
• Proven record of mentoring senior engineers and driving cross-team technical initiatives
• Strong problem-solving skills focused on reliability, observability, and system design

Tech stack

Benefits