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# Backend Software Engineer

- **Company:** Spire Inc.
- **Location:** Boulder, CO, United States
- **Experience:** Expert
- **Salary:** $171,000.0 - $202,500.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Geographic Information Systems, Application Programming Interfaces (APIs), Amazon Web Services, Amazon S3, Code Review, Data as a Services, Amazon DynamoDB, Identity and Access Management, Python (Programming Language), NetCDF, Node.Js, OAuth, OpenID, Data Streaming, Systems Architecture, TypeScript, Okta, Jupyter, Amazon Virtual Private Cloud (VPC), Backend, Cloudformation, Dask, Real Time Data, Api Gateway, Restful APIs, Terraform
- **Published:** October 5, 2026
- **Apply:** https://spire.com/careers/job-openings/job/?gh_jid=8238125#apply

## About the Role

* 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 as the FAA

## Description

* 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