Senior Principal Engineer, Data-Path Scale-Up

Upscale, Inc.; Kentucky; On-site; USD 263,000 - 284,000; Full time

Job summary

Upscale, Inc. is seeking a senior validation professional to own how data-path features are qualified on our AI networking platform. You will define test strategy, ownership of feature readiness, and release sign-off while debugging cross-stack failures and growing the QA team.

The role focuses on traffic management, cycle-accurate models, and silicon validation. Strong leadership and framework development are essential for success at scale.

Qualifications

• 15+ years in networking software, validation, or ASIC/platform QA.
• Deep hands-on traffic management: PFC, scheduling, buffers, ECN/WRED.
• Python or Go at framework-review level; solid Linux and packet- and counter-level debugging.

Responsibilities

• Define and own the validation strategy, test plans, coverage, and release criteria for the features above.
• Qualify lossless and congestion behavior under RoCEv2 and GPU collectives at line rate, including incast and ECN accuracy.
• Build validation frameworks and debug tools the team depends on; model-based checks of routing and queueing outcomes.
• Lead root-cause analysis across software, SDK, model, silicon, and Linux; decide where to fix.
• Mentor QA engineers, review their plans and automation, and represent validation in design reviews.

Skills

Networking software

System validation

Mentoring QA engineers

Root-cause analysis

Traffic management

Tools

SAI & switch SDK

NOS: SONiC or FBOSS

Linux

Job description

Upscale, Inc. is seeking a senior validation professional to own how data-path features are qualified on our AI networking platform. You will define test strategy, ownership of feature readiness, and release sign-off while debugging cross-stack failures and growing the QA team.

The role focuses on traffic management, cycle-accurate models, and silicon validation. Strong leadership and framework development are essential for success at scale.