Jobs / United States / Spire INC
Backend Software Engineer, Weather & Aviation
Spire INC · 🇺🇸 Boulder, Colorado, United States
Sponsorship verdict
Sponsorship possible
One solid signal, not two — worth applying, and worth asking about sponsorship early.
- Employer is on a government sponsor recordThe US Department of Labor certified 9 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest May 2026) — the step every H-1B hire needs first. USCIS also records 6 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
- 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. 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.
- What Spire INC paid sponsored hires in similar roles4 certified filings for “Platform Integration Engineer III” (Software Developers) in MO: $140k–$150k, median $141k. Most were filed at wage level IV (100%) — 4 lottery entries, ≈61% projected selection odds for cap-subject employers. Source: US Department of Labor LCA disclosure data (Oct 2025 – Jun 2026).
- Confirmed live todayWhen a source last listed this job as open.
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).
A verdict summarises public evidence; it is not legal advice and never a guarantee — the employer and the immigration authority decide. Sign in to factor in where you can already work.
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Sponsor Radar — Spire INC
The US Department of Labor certified 9 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest May 2026) — the step every H-1B hire needs first. USCIS also records 6 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
Past sponsorship or register membership never guarantees sponsorship for this vacancy or for you. Full Sponsor Radar for Spire INC →
About the role
The Role: Spire's Weather & Aviation business delivers global weather forecasts, flight tracking, and aviation data to customers who rely on it every day to make operational decisions. As we grow, we're investing in the engineering foundations that keep our platform fast, secure, and dependable at scale. We're seeking a Senior Backend Software Engineer who has helped production systems scale, harden, and stay reliable as usage and expectations grew. You'll own critical services end to end, contribute to the architecture behind our weather and aviation data services, and help raise the engineering bar as we grow. This role suits someone with experience in an established organization with production customers, uptime commitments, and compliance obligations, where a well-designed, observable, recoverable system matters more than the fastest prototype. What You'll Do as a Senior Backend Software Engineer: • Build and improve AWS-based backend services with a focus on availability, fault tolerance, and performance as load grows • Design and implement authentication and authorization features using OIDC and OAuth 2.0, including token handling, service-to-service auth, and access control • Develop and maintain the REST APIs and streaming endpoints (e.g., WebSockets, Server-Sent Events, or Kinesis/Kafka-backed feeds) that deliver Spire's weather and aviation data to customers • Improve observability across metrics, logging, and tracing, and help define and track SLOs for the services you own • Share ownership of production operations, including participation in an on-call rotation, incident response, and postmortems, as part of an engineering team that runs what it builds • Apply secure engineering practices day to day, and help our systems meet the NIST and ISO/IEC 27001 standards we operate under • Take the technical lead on projects within your area, from design through rollout • Mentor other engineers through code reviews, pairing, and design discussions • Contribute to team practices for testing, deployment, infrastructure-as-code, and change management • Collaborate closely with product owners and data scientists to align backend services with customer and mission needs • Create and maintain clear documentation for APIs and system architectures Basic Skills/Qualifications: • 6+ years' experience in professional backend software development, with significant time operating and scaling production systems that customers rely on • A track record of taking systems from "working" to "reliable": improving uptime, reducing incidents, and handling growth in data volume, traffic, or customers • Strong hands-on experience with AWS (e.g., ECS/EKS, Lambda, API Gateway, RDS/Aurora, DynamoDB, S3, IAM, VPC networking) and infrastructure-as-code (Terraform, CDK, or CloudFormation) • Strong knowledge of OIDC and OAuth 2.0, including identity providers (e.g., Cognito, Okta, Auth0, Keycloak), JWT handling, and secure session and token management • Experience designing and operating both REST APIs and streaming or real-time data endpoints • Experience working in environments governed by NIST or ISO/IEC 27001 security standards, with an understanding of how they shape engineering decisions • Proficiency in Python or another backend language such as Go, Java, or TypeScript/Node.js • Excellent documentation, collaboration, and communication skills, and comfort making and defending architectural trade-offs Nice to Have: • Experience with the Pangeo ecosystem (xarray, Dask, Zarr, Jupyter) or other large-scale scientific and geospatial data tooling • Background in the weather or aviation domains, including familiarity with data formats such as GRIB2 and NetCDF, aviation products such as METAR/TAF or ADS-B, or regulatory contexts such