Simulators Engineer Jobs

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Systems Software Engineer

quadric Burlingame, CA

Burlingame, CA

Today

$150k - $220k/yr Full time C++ Language Debugging Engineering

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Job Description

Quadric is building foundational systems software that connects its GPNPU hardware to a high-level SDK, focusing on the tools developers rely on every day. As a Systems Software Engineer in Burlingame, you will help create and evolve simulator, debugger, loader/toolchain, and C++ host/core interfaces that support ultra-high-performance developer workflows.

This onsite role centers on low-level infrastructure, including architecture validation through simulation, binary execution paths, and debugging backends with deep visibility into core GPNPU execution. You will also contribute to next-generation hardware and software specifications by analyzing execution trade-offs using the Instruction Set Simulator.

Responsibilities

Maintain and optimize the simulator used for architecture validation and software development.
Lead design work on a low-level toolchain, covering efficient translation, binary execution (including ELF handling), and code loading.
Build, enhance, and refine debugging tools and backends that enable low-level inspection of core GPNPU execution.
Design, maintain, and document clean abstraction layers and public C++ APIs that help users and SDKs interact with the hardware with minimal friction.
Independently own and expand one or more key components across the systems stack, including Simulator, Loader/Assembler, Debugger, or C++ Host APIs.
Use insights from the Instruction Set Simulator to influence next-generation GPNPU hardware and software specifications by identifying execution trade-offs.
Deliver production-ready, low-latency API abstractions and debugging utilities trusted by internal SDK developers and external customers.

Requirements

5 years+ experience building systems software such as simulators, toolchains, debuggers, drivers, or performance-critical C++ libraries.
Deep proficiency with modern C++ (C++17/20) and systems-level programming concepts.
Advanced understanding of RAII, manual memory management, object lifetimes, ownership models, and memory access optimization.
Ability to identify, design, and maintain abstraction layers that keep code readable, maintainable, and scalable.
Proactive, adaptable mindset for tackling challenges specific to a brand-new processor architecture.
Demonstrated experience working at the boundary of hardware and software, including one or more areas:
- Building/extending cycle-accurate or functional simulators (for example, Gem5, QEMU, or proprietary tools).
- Working on debugger internals such as breakpoints, memory inspection, and GDB stubs or remote protocols.
- Shipping C++ SDKs/libraries that balance “zero-cost” abstractions with intuitive UIs.
- Writing or maintaining assemblers, linkers, or loaders with deep knowledge of binary formats (ELF) and memory layouts.
- Writing performance-critical code where every byte and cycle matters (drivers, embedded firmware).
- Low-level hardware concepts including CPU/NPU pipelines, registers, caches, and silicon-level constraints.
Experience with CUDA, OpenCL, or Vulkan, including SIMD/SIMT architectures and host-to-device memory transfers.
Experience with Linux driver development and CMake project configuration best practices.
Familiarity with Rust for systems safety, including reasoning through multi-threaded logic and complex synchronization.
Knowledge of integrating functional programming concepts in non-garbage-collected environments.

Technologies

C++ (C++17, C++20)
RAII
ELF, ELF formats
Gem5, QEMU
GDB, GDB stubs
CUDA, OpenCL, Vulkan
SIMD, SIMT
Linux driver development
CMake
Rust
Caltrain

Benefits

Medical, dental, and vision insurance from day one, with premiums covered at 99% for Employees.
Company-paid life insurance.
Voluntary supplemental life insurance.
STD + LTD insurance.
Commuter support including parking or Caltrain reimbursement (office within walking distance of the Caltrain station).
FSA + HSA.
Equity with the business.
Paid Parental Leave.
401(k) Retirement Plan.
Flexible PTO.
Winter holiday shutdown.
Catered lunch each day in the office.
Downtown Burlingame office location near shops, cafes, and local amenities.
Collaborative, low-ego culture with significant ownership and impact.
A work culture focused on innovative disruption.

Location: Burlingame, CA (onsite). Salary: USD 150,000 - 220,000 per yearly.

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