# Sr. Principal Engineer, Scale-Up (Data Path Features) at Upscale AI

- Company: Upscale AI
- What the company does: Upscale builds next-generation AI network infrastructure with scalable systems, intelligent automation, and seamless connectivity.
- Company website: https://upscale.com
- Type: Startups (AI role)
- Level: Principal and up
- Location: US - Headquarters
- Work setup: On-site
- Pay: $263K to $284K base salary per year (USD)
- Posted: 2026-10-15
- Apply by: 2026-11-29
- Apply: https://jobs.lever.co/upscale-ai/76a5791f-3060-4cd6-a940-506c3ff2820f?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/upscale-ai-sr-principal-engineer-scale-up-data-path-features/

## About the role

Senior individual-contributor validation role. You own how data-path features are qualified on our scale-up AI networking platform, from the SAI/SDK programming path through ASIC forwarding and traffic-management behavior. You set the test strategy, own feature readiness and release sign-off, debug the hardest cross-stack failures, and grow the QA engineers around you. Primary depth is traffic management. Feature scope (cycle-accurate model and silicon) Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- 15+ years in networking software, system validation, or ASIC/platform QA, with a substantial stretch as a senior individual contributor
- Deep hands-on traffic management: PFC, scheduling, buffers, classification and marking, queueing, ECN/WRED
- Strong L2/L3 and ACL fundamentals, and experience with SAI, a switch SDK, or a NOS such as SONiC or FBOSS
- Ownership of validation frameworks and automation, not only test execution
- Python or Go at framework-review level, solid Linux and packet- and counter-level debugging
- Proven mentoring and influence as an individual contributor, and clear written readiness and root-cause reports

Tags: AI Network Software

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/upscale-ai-sr-principal-engineer-scale-up-data-path-features/