Jobs / United States / Xantium Labs Limited

Xantium Labs Limited

Infrastructure Generalist

London, New York City Posted 3 months ago

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Sponsorship verdict

No sponsorship evidence yet

No government record and no wording either way. Not a refusal: ask the recruiter.

  • No government sponsor record hereThis employer does not appear with approvals in the government data SponsorApply holds.
  • The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
  • No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area.
  • Confirmed live todayWhen a source last listed this job as open.
Details and sources
No salary bar for this route
H-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.

US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).

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Before you apply

Sponsorship unknown

No register record and no sponsorship wording in the posting. Worth asking the employer before investing significant time.

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About the role

We seek talented Infrastructure Generalists to build, evolve and maintain the core infrastructure that underpins and protects Xantium’s technology environment. Those in this role are versatile problem solvers capable of working with leaders in Xantium’s Security, Engineering, and Operations teams. Infrastructure Generalists operate in a greenfield, high-performance environment where their decisions can have both immediate and long-term impacts. Key Responsibilities May Include • Building and maintaining infrastructure across compute, storage, networking, and cloud environments. • Owning system configuration, deployment, and troubleshooting across endpoints, servers, and services. • Defining and running experiments to improve performance, reliability, and system design. • Understanding latest state-of-the-art solutions and identifying fresh ideas to propose to senior leadership • Driving architectural decisions that support growth and operational resilience. Requirements • Track record of academic and professional achievement. • 2+ years of experience in infrastructure or systems engineering within complex environments. • Deep understanding of how computers, operating systems, and networks work. • Strong ability to reason from first principles and debug unfamiliar systems. • Proven ability to experiment thoughtfully and apply learnings to real systems. • Pragmatic, high-ownership mindset with clear and structured thinking.

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