Upscale AI

Upscale AI

Sr. Principal Engineer, Scale-Up (Data Path Features)

US - Headquarters · Principal

Sponsorship not specified$263k-$284kDetected 1 day ago
PythonGoLinuxAccessibilityMentoring

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odds of building a lasting career here

61Sponsors, lottery-bound
Cap-exempt (no lottery)0
Sponsors this role90
Entry-level history0
PERM / green-card track0
Lottery odds (Level IV)94
Fits your clock70

Sponsors, but it's cap-subject — you still face the weighted lottery (~61% per draw at Level IV). Good if you win; have a cap-exempt backup on your list.

Lottery odds assume a STEM candidate.

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Employer immigration record

from this employer's Department of Labor filings

Files H-1B transfers

16 transfer filings in the last year, covering 16 workers. Median labor-condition decision: 7 days. An employer that already files transfers is one that can take over an existing H-1B.

Sourced from Department of Labor LCA, PERM and prevailing-wage disclosure data. Employer matching is by name, so figures may be split across an employer's legal entities. Absence of a filing means none appears in our copy of the data, not that none exists.

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About the role

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

Responsibilities

  • Build the frameworks and debug tools the team depends on, including model-based checks of classification, queueing, scheduling, and drop or mark outcomes
  • Lead root-cause analysis across software, SDK, model, silicon, and Linux, and decide when the spec, the implementation, or the test is wrong
  • Mentor QA engineers, review their plans and automation, and represent validation in design reviews and the development-to-QA handoff
  • Support customer deployments, proofs of concept, and field issues on data-path and congestion behavior

Requirements

  • 15+ years in networking software, system validation, or ASIC/platform QA, with a substantial stretch as a senior individual contributor
  • Strong L2/L3 and ACL fundamentals, and experience with SAI, a switch SDK, or a NOS such as SONiC or FBOSS
  • Proven mentoring and influence as an individual contributor, and clear written readiness and root-cause reports

Nice to have

  • customer, field, or forward-deployed work is a plus

Skills

  • Why join Upscale, Inc.
  • Position Overview
  • Primary depth is traffic management.
  • Feature scope (cycle-accurate model and silicon)
  • Classification and marking:
  • DSCP and 802.1p to traffic class, trust, TC-to-queue, remarking, port versus switch map binding, classification miss, ACL rewrite
  • unicast and multicast queues, counters, occupancy, watermarks, drops
  • strict priority, WRR/DWRR, hierarchy, shaping, rate limiting, fairness under oversubscription
  • ingress and egress pools, static and dynamic thresholds, priority groups, headroom, reserved versus shared
  • PFC and lossless Ethernet:
  • pause, headroom, lossless queues, watchdog, storm and deadlock, DCB
  • ECN and WRED:

Compensation

  • $263k-$284k

Benefits

  • Own the validation strategy, test plans, coverage, and release entry/exit criteria for the features above

Company info

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

Equal opportunity

  • Upscale, Inc., is building a team that reflects a wide range of perspectives, backgrounds, and experiences. We're proud to be an Equal Opportunity Employer and consider all qualified applicants regardless of race, color, religion, national origin, sex, sexual orientation, gender identity, disability, or veteran status.
  • Accessibility & Accommodations
  • We're committed to making our hiring process accessible to everyone. If you need accommodations at any stage, just reach out to us at hiring@upscaleai.com -we're happy to help. Note: This inbox is only for accommodation requests.
  • Upscale, Inc., is building a team that reflects a wide range of perspectives, backgrounds, and experiences.
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This listing is sourced directly from Upscale AI's careers page and normalized into a canonical job model.