Staff Software Engineer, C++ Backend Development(Ad Cloud Bidding)

About Appier Appier is an AI-native Agentic AI as a Service (AaaS) company that uses artificial intelligence (AI) to power business decision-making. Founded in 2012 with a vision of democratizing AI, Appier’s mission is turning AI into ROI by making software intelligent. Appier now has 17 offices across APAC, Europe and U.S., and is listed on the Tokyo Stock Exchange (Ticker number: 4180). Visit www.appier.com for more information. About The Ad Cloud Bidding Team The Ad Cloud Bidding Team is at the forefront of Appier's AI-driven advertising solutions. We develop high-throughput and low-latency systems that deliver superior ROAS (Return On Ad Spend) and maximize campaign ROI for clients worldwide. Our services optimize budget allocation across premium, high-intent inventories, and process billions of requests per day with millisecond precision. You will use advanced C++ technologies to build robust and scalable infrastructure that is foundational to our AI decision-making engines in a fast-paced, data-intensive environment where performance is paramount. About The Role Software engineers (Ad Cloud Bidding) at Appier build a wide range of platforms and services that interconnect data and AI with our customers and users. As a Staff Software Engineer, you will play a critical role in designing and building scalable and performant backend architecture, owning and driving the technical roadmap for sizable projects or services. You will also take responsibility for service operations – ensuring reliability, availability, and efficient deployment of large-scale distributed systems. Responsibilities Engage in the design of large-scale backend systems and distributed servicesContribute to technical roadmap and planningCollaborate with cross-functional teams to deliver robust and high-performance systemsTroubleshoot production issues and contribute to root cause analysisEnsure high reliability through best practices in service operation, monitoring, and deploymentParticipate in on-call rotations and lead incident response when required About You [Minimum qualifications] 8+ years of experience in software developmentProficient in modern C++ programming (C++11 and later)Familiar with Unix/Linux environmentsSolid understanding of system programmingExperience in developing low-latency (millisecond-scale) and high-throughput (>1K QPS per machine) systemsExperience in service optimization and performance tuningStrong sense of ownership and good problem-solving skills [Preferred qualifications] Experience in modern build systemsExperience in operation automation toolsExperience with monitoring, logging, and alerting frameworks