Senior ASIC Modeling Software Engineer

Upscale AI is building the high-performance infrastructure powering the next generation of artificial intelligence.

Backed by over $300M in funding and rapid global adoption, we are scaling systems designed for the world’s most demanding AI workloads.

We focus on first-principles engineering across silicon, systems, and networking—where performance, scale, and execution are critical.

Our team is talent-dense and high-performing.

We value ownership, technical rigor, and speed, and we offer the opportunity to work on foundational problems with immediate, real-world impact.

If you’re looking to do high-impact work, move fast, and help define the infrastructure behind the future of AI—Upscale AI is where you can produce meaningful work at the frontier—and operate at a high standard.

About the Role: We're building the simulation platform for UpscaleAI's next-generation AI networking ASICs.

The platform is a functionally accurate software model of our ASIC architecture, enabling software development, verification, and customer validation before silicon is available.

You'll be responsible for developing, testing and maintaining the platform across multiple ASIC generations, ensuring it accurately represents hardware behavior and scales to support our customers' demanding AI infrastructure workloads.

• ASIC Architectural Model: Our current-generation ASIC simulator
• Next-gen ASIC models: Future silicon with enhanced AI networking features
• Multi-chip simulation: Modeling systems with multiple interconnected ASICs
• Performance optimization: Making large-scale simulations practical
• Design and implement software model components that accurately simulate ASIC behavior (forwarding engines, schedulers, memory subsystems, control plane interfaces)
• Translate architectural specifications and microarchitecture documents into high-fidelity C++ models, ranging from functionally accurate to performance-accurate depending on the subsystem