Principal Software Engineer - PubMatic AgenticOS (Buy Side Bidding Platform)

📋 Description Architect, design, and build ultra-low-latency RTB systems for buy-side ads. Lead bidder services handling millions of QPS with strict latency and SLAs in Golang/C/C++. Design campaign pacing, budgeting, and delivery optimization across CPA, ROAS, CTR, CVR. Own core systems for deal execution, auction participation, and bid optimization. Build data pipelines for impressions, clicks, conversions, and attribution (Kafka, Flink, Spark). Collaborate with ML engineers to productionize bid optimization and reach forecasting models. 🎯 Requirements Eight+ years of software engineering in ad tech/performance advertising. Strong Golang experience building low-latency, high-scale backends. Proven experience designing and operating RTB platforms, bidders, or ad serving systems. Deep understanding of campaign pacing, budgeting, and optimization algorithms. Experience with streaming and distributed systems (Kafka, Flink, Spark Streaming). Familiarity with OpenRTB, VAST, and programmatic ad workflows. SQL, PostgreSQL, and large-scale analytics (Snowflake, BigQuery, or similar). 🎁 Benefits Hybrid work with 3 days in office and 2 remote. Healthcare, dental, and vision insurance. Paid leave, holidays, and wellness programs. In-office lunches and commuter benefits. Equal opportunity employer promoting diversity and inclusion.