Principal Software Engineer Advantest - 3.5 Lake Forest, CA Job Details 19 hours ago Qualifications Customer communication Systems integration Software engineering Device driver development System troubleshooting Software deployment C# Software implementation Integration Architecture Design (Architecture design skills) Integration architecture Distributed systems Implementation (software development lifecycle) IP networking System deployment Distributed computing Multithreading Design (software development lifecycle) Full Job Description Principal Software Engineer Position Overview Hands-on Principal Software Engineer responsible for software architecture, design, coding, system integration, and debugging across SLT, Burn-In, and HPC Semiconductor test platforms. The role works directly across semiconductor testers, automated handlers, software drivers, firmware, instrumentation, thermal systems, test programs, and distributed software platforms. Key Responsibilities Architect, design, and develop software for SLT, Burn-In, and HPC test platforms, test orchestration, equipment integration, messaging, and data services. Drives test driven development in Hardware-Centric Environments with high focus on unit and integration tests Remain approximately 70% hands-on in coding, integration, testing, debugging, and technical design. Develop cross-platform applications, SDKs, drivers, APIs, test programs, and equipment-control software using C#, .NET 10+, ASP.NET10+, Python, Blazor, and xUnit. Develop distributed messaging, telemetry, data pipelines, and orchestration using Apache Pulsar and PostgreSQL. Implement secure on-premises platform services using OIDC/OAuth 2.0 and related identity technologies. Integrate software with test hardware, firmware, electrical, mechanical, thermal, and instrumentation systems. Develop and integrate ActivATE/ActivATE360, device/instrumentation drivers, and test execution workflows. Implement SCAN, pattern execution, and vector-conversion workflows. Debug system-level issues across software, communications, firmware, hardware, and DUT execution. Work directly with customers and global engineering teams during integration and deployment. Gather requirements from customers, internal departments, and cross-BU partners; communicate tradeoffs and deliver solutions from design through production. Design for reliable execution, test-data integrity, fault recovery, and compatibility across independently evolving components. Mentor engineers and lead design/code reviews while remaining hands-on. All other duties as assigned.

Requirements:

Required Qualifications 12+ years of software engineering experience with strong hands-on technical leadership. Deep expertise in C#/.NET, distributed systems, multithreading, asynchronous programming, APIs, and debugging. Experience integrating software with physical equipment, firmware, drivers, or semiconductor/industrial test systems. Experience owning architecture through implementation, integration, and production deployment. Strong Knowledge of TCP/IP, UDP, HTTP, and gRPC. Bachelor's degree in computer science, computer engineering, electrical engineering, or a related field, or equivalent practical experience. Must be willing to work onsite at our Lake Forest, CA office. Preferred Qualifications Experience with SLT, Burn-In, ATE, HPC, ActivATE/ActivATE360, or Advantest 93000. Experience with digital tests, test programs, device drivers, instrumentation, and hardware-in-the-loop testing. Experience delivering cross-platform and on-premises software in semiconductor production environments. Additional Requirements Willingness to work in an on-prem and on-site setup (No Hybrid) in Lake Forest, CA. Ability and willingness to travel domestically and internationally, sometimes on short notice Strong written and verbal communication skills