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# Member of Technical Staff - Backend/API Platform

- **Company:** RADIXARK, INC.
- **Location:** Palo Alto, CA, United States
- **Experience:** Experienced
- **Salary:** $200,000
- **Contract:** Permanent contract
- **Skills:** Admin Tools, Application Programming Interfaces (APIs), Amazon Web Services, Systems Engineering, User Authentication, Microsoft Azure, Cloud Computing, Databases, Software Debugging, Distributed Systems, Monitoring of Systems, Identity and Access Management, Job Scheduling, Python (Programming Language), Network Control, Queueing Systems, Prometheus, Management of Software Versions, Datadog, Data Logging, Scripting, Google Cloud, Grafana, Caching, Backend, Rate Limiting, Usage Tracking, Build Management, Kubernetes, Information Technology, Deployment Automation, Production Code, SGLang, Machine Learning Operations, Restful APIs, Api Management, Golang, Programming Languages
- **Published:** November 14, 2026
- **Apply:** https://www.careerbuilder.com/job-details/member-of-technical-staff-backend-api-platform-palo-alto-ca--0190b6b3-de84-4be1-932e-d971b0971633

## About the Role

Application Programming Interface (API), Authentication, Application Programming Interface (API), REST (Representational State Transfer), Production Systems, Computer Science, Python Programming/Scripting Language, Go Programming Language (Golang), Quality Metrics, Distributed Computing, * 4+ years experience building production backend systems, APIs, or platform infrastructure

 * Bachelor's or Master's degree in Computer Science, Engineering, or equivalent industry experience
 * Strong proficiency in Python, Go, or Rust with production-quality code standards
 * Experience designing and building REST/gRPC APIs at scale
 * Solid understanding of distributed systems, databases, caching, and message queues
 * Experience with authentication, authorization, rate limiting, and multi-tenancy
 * Familiarity with cloud platforms (AWS, GCP, Azure) and Kubernetes
 * Experience with monitoring and observability tools (Prometheus, Grafana, DataDog)
 * Understanding of ML serving infrastructure or high-throughput systems is a plus

## Description

RadixArk is looking for a Member of Technical Staff - Backend/API Platform Engineer to build the API layer, control plane, and platform services that power SGLang and Miles in production. You'll design and implement the REST/gRPC APIs, authentication systems, multi-tenancy isolation, and monitoring infrastructure that thousands of developers and companies rely on. This role bridges high-performance inference/training systems with production-grade platform engineering., * Design and build production APIs for SGLang and Miles: REST/gRPC endpoints, client SDKs, API versioning

 * Implement authentication, authorization, and rate limiting systems for multi-tenant deployments
 * Build control plane infrastructure: job scheduling, resource allocation, model deployment management
 * Create monitoring, logging, and observability systems for production inference and training workloads
 * Design and implement billing integration, usage tracking, and quota management
 * Build management dashboards and admin tools for cluster operations
 * Ensure API reliability, performance, and security at scale
 * Implement multi-tenancy isolation and security boundaries
 * Create deployment automation, CI/CD pipelines, and rollback procedures
 * Write comprehensive API documentation and integration guides
 * Partner with Systems Engineers to optimize end-to-end latency from API serving layer
 * Debug production issues and implement reliability improvements