Principal Software Engineer

Advantest•Lake Forest, CA

3d•Onsite

About The Position

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.

Requirements

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.

Nice To Haves

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.

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.