Senior Software Engineer (Backend)

We are looking for a Senior Software Engineer to continue building and operating the cloud platform that runs our simulations and delivers results to customers. You will design APIs, orchestrate large-scale simulation processing jobs, and work on the logging, observability, and security that keep the platform reliable and trustworthy. A core part of this role is customer access: hardening the front-end-facing services and, in time, the customer-exposed APIs that let carriers, agencies, and partners securely retrieve their risk data. This is a senior software engineering role at the center of how XyloPlan turns "Fast Fires" physics into wildfire risk products that insurance carriers and fire agencies depend on.

KEY RESPONSIBILITIES

- Design, build, and maintain backend APIs and services that serve simulation inputs, jobs, and results

- Build the services that power customer-facing front-ends and design customer-exposed APIs with secure, multi-tenant access controls

- Orchestrate compute-heavy simulation processing on GCP (Cloud Run, GKE, Batch, Pub/Sub, Cloud Storage)

- Build logging, monitoring, and observability so simulation pipelines are debuggable and dependable at scale

- Own platform security: authentication, authorization, tenant isolation, secrets management, and data protection for sensitive customer datasets

- Develop CI/CD, infrastructure-as-code, and deployment automation (Terraform, Cloud Build)

- Optimize cost and performance of large batch processing workloads

- Collaborate with the geospatial and simulation teams to productionize their models and pipelines

- Set engineering standards and mentor engineers as the team scales, and contribute to core technical architecture decisions

REQUIRED QUALIFICATIONS

- 7+ years of professional software engineering experience building and operating production backend systems

- Strong proficiency in Python for backend services and data processing

- 3+ years of hands-on experience with Google Cloud Platform

- Proven experience designing and shipping customer-facing or externally-exposed APIs (REST, gRPC, or GraphQL)

- Experience implementing authentication, authorization, and multi-tenant access controls for customer-facing systems

- Experience with containerization and orchestration (Docker, Kubernetes)

- Strong grounding in application and cloud security best practices

- Experience with observability tooling (logging, metrics, tracing)

PREFERRED QUALIFICATIONS

- Experience building developer-facing API products, including authentication schemes, rate limiting, versioning, and documentation

- Experience orchestrating large batch or scientific computing workloads

- Experience with infrastructure-as-code (Terraform) and CI/CD pipelines

- Experience handling sensitive or regulated customer data (insurance, financial, or geospatial)

- Experience in an early-stage startup environment

- Exposure to geospatial data, simulation pipelines, or high-performance computing

- Fullstack experience

BENEFITS

- Equity: Stock option grant four-year vesting with one-year cliff

- Benefits: Health, dental, vision

- 401(k) available