{"id":89572,"url":"https://alion.io/job/appier-senior-software-engineer-c-backend-development-ad-cloud-bidding-tokyo-relocation-required","title":"Senior Software Engineer, C++ Backend Development (Ad Cloud Bidding)- Tokyo Relocation required","company":{"id":177717,"name":"Appier","domain":"appier.com","url":"https://alion.io/company/appier-2","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":88,"open_postings":56,"ghost_share":0.125,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":323,"computed_at":"2026-11-09T06:03:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Tokyo, Japan"],"countries":["JP"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":46000,"max_usd":95000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":22},"experience_years_min":5,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"C++","optional":false},{"name":"Linux","optional":false},{"name":"Unix","optional":false}],"status":"live","first_seen_at":"2025-11-07T08:39:22Z","employer_posted_date":"2026-03-16","last_verified_at":"2026-11-09T19:13:11Z","board_verified":true,"closed_at":null,"days_open":367,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":366},"description":"About Appier \nAppier 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.\nAbout the role\nSoftware engineers (Ad Cloud Bidding) at Appier Tokyo office build a wide range of platforms and services that interconnect data and AI with our customers and users. As a Senior Software Engineer, you will contribute to building scalable backend systems while also participating in service operation activities, including deployment, monitoring, and incident response, to ensure reliable and high-performing distributed services.\nResponsibilities\nDesign, implement, and optimize backend services\nParticipate in code reviews and contribute to system design discussions\nCollaborate with cross-functional teams to deliver robust and high-performance systems\nTroubleshoot production issues and contribute to root cause analysis\nSupport system deployment, monitoring, and maintenance in production environments\nParticipate in on-call rotations and lead incident response when required\nAbout You\n[Minimum qualifications]\nBS/MS degree in Computer Science or related fields\n3+ years of experience in software development\nExperience in modern C++ programming (C++11 and later)\nFamiliar with Unix/Linux environments\nGood interpersonal and problem-solving skills and strong sense of ownership\n[Preferred qualifications]\nGood understanding of system programming\nExperience in developing low-latency (millisecond-scale) and high-throughput (>1K QPS per machine) systems\nExperience in service optimization and performance tuning\nExperience in modern build systems\nExperience in operation automation tools\n[Language]\nFluent in English or Chinese.\nOpen to overseas candidates/Visa Support\n This position is based in Tokyo, Japan. 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