Senior Software Engineer

Advantest•Lake Forest, CA

5h•Onsite

About The Position

Advantest Test Solutions (ATS) is a global leader in semiconductor test infrastructure, delivering high-performance, massively parallel test platforms to customers worldwide. We are seeking a Senior Software Engineer with strong hands-on expertise in designing, building, and owning high-performance, cross-platform software platforms for semiconductor test systems. This role is focused on deep engineering, platform ownership, and customer-facing technical execution across SLT, Burn-In, and HPC environments.

Requirements

S. in Computer Science, Computer Engineering, Software Engineering, or related field (M.S. preferred)
7+ years of software development experience, including 5+ years with C# and .NET
Strong expertise in the .NET ecosystem and cross-platform development
Proficiency in C#, C++, Python, SQL, and NoSQL technologies
Experience with Apache Pulsar, Microsoft Azure, and distributed messaging systems
Strong background in multithreading, asynchronous programming, and high-performance systems
Hands-on experience building and deploying on-premises and hybrid software platforms
Demonstrated ability in large-scale data flows, telemetry throughput optimization, and system-level design
Strong technical design, documentation, and communication skills
This is an onsite role at our Lake Forest, CA facility.
Ability and willingness to travel domestically and internationally, sometimes on short notice
Strong written and verbal communication skills

Nice To Haves

Prior experience with semiconductor test systems and testers
Experience developing or working with semiconductor test IDEs
Familiarity with ActivATE™ and/or Advantest 93000 SOC platform (SmarTest)
Experience with digital test, SCAN, pattern execution, and vector-based test flows
Experience with modern test frameworks and practices (xUnit, FluentAssertions, TDD, Playwright, Blazor)

Responsibilities

Design, develop, and maintain high-performance software platforms and products for on-premises and hybrid deployments
Lead modernization of legacy software components into scalable, production-ready architecture
Build cross-platform server and terminal applications (Windows, Linux, macOS), including development using the OneImlx.Terminal framework
Develop software, drivers, and test programs for advanced silicon targeting SLT (System Level Test), Burn-In, and HPC (High-Performance Computing) platforms
Engineer software for control, communication, and data flow across mechatronic and semiconductor test subsystems
Design, implement, and own SCAN execution and vector conversion pipelines across multiple digital pin-card configurations, ensuring correctness, scalability, and performance
Engineer distributed systems supporting high-throughput telemetry, messaging, and data pipelines
Work extensively with networking and communication protocols (TCP/IP, UDP, HTTP, gRPC)
Actively code, design, document, review, and support production-quality software
Serve as a technical interface with customers and internal cross-functional teams
Support on-site deployments and occasional domestic and international travel (10–20%)
All other duties as assigned.