Platform Software Architect, Senior / Staff

positron.ai; United States; Remote; USD 180,000 - 210,000; Full time

Benefits offered by this job

Remote-friendly

Company computer provided

Medical coverage

Dental coverage

Vision coverage

Life insurance

Disability insurance

Unlimited PTO

13 paid holidays

Equity

401(k) matching

Job summary

positron.ai is seeking a senior platform architect to set the software architecture for a custom AI inference platform across current and future hardware generations.

This role spans silicon, firmware, operating systems, runtimes, simulation, security, performance, and developer tools, combining long-term interface decisions with hands-on prototypes where needed.

Qualifications

• 10+ years in low-level platform software or a related systems field, with architecture-level ownership.
• Deep knowledge of computer architecture, memory systems, concurrency, device I/O, hardware-software interfaces, and system bring-up.
• Strong C or C++ skills and sound judgment about when to use specifications, models, or code to settle design questions.

Responsibilities

• Define stable, versioned interfaces for boot, commands, memory, data movement, scheduling, telemetry, errors, resets, security, and host-device communication.
• Bring runtime libraries, firmware, Linux, simulation, and post-silicon tools into a coherent platform design.
• Lead architecture reviews, record trade-offs, and resolve technical issues across teams.
• Prototype high-risk interfaces and provide reference implementations to clarify design choices.
• Mentor senior engineers and work with security and performance specialists on protection, observability, debugging, and throughput.

Skills

Low-level platform software

Computer architecture

Concurrency & memory systems

C/C++ programming

Tools

Linux

Simulation tools

Job description

Role overview

Set the software architecture for a custom AI inference platform across current and future hardware generations. This senior technical leadership role spans silicon, firmware, operating systems, runtimes, simulation, security, performance, and developer tools, combining long-term interface decisions with hands-on prototypes where needed.

Responsibilities

• Define stable, versioned interfaces for boot, commands, memory, data movement, scheduling, telemetry, errors, resets, security, and host-device communication.
• Bring runtime libraries, firmware, Linux, simulation, and post-silicon tools into a coherent platform design.
• Lead architecture reviews, record trade-offs, and resolve technical issues across teams.
• Prototype high-risk interfaces and provide reference implementations to clarify design choices.
• Mentor senior engineers and work with security and performance specialists on protection, observability, debugging, and throughput.

Requirements

• At least 10 years in low-level platform software or a related systems field, with architecture-level ownership.
• Deep knowledge of computer architecture, memory systems, concurrency, device I/O, hardware-software interfaces, and system bring-up.
• Strong C or C++ skills and sound judgment about when to use specifications, models, or code to settle design questions.

Benefits and work setup

Remote-first work with company-provided computer and home office setup. Benefits include company-paid medical, dental, vision, life, and disability coverage; supplemental coverage options; unlimited paid time off; 13 paid holidays; equity; and a 401(k) with matching.

Applicants must already be authorized to work in the U.S.; new visa sponsorship is unavailable, though eligible H-1B transfers may be supported.