Member of Technical Staff — Backend/API Platform
RadixArkAI Infrastructure company
Palo Alto, United States$200,000 - $400,000 USDLead
Accel
Spark Capital
NVentures
Salience Capital
A&E Investments
HOF Capital
Software Engineering
About the role
TL;DR
Builds backend API layer, control plane, and platform services for AI infrastructure.
- •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.
- •Key Responsibilities 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 Ensure API reliability, performance, and security at scale Requirements 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 Familiarity with cloud platforms (AWS, GCP, Azure) and Kubernetes
Required skills
PythonGoRustREST APIgRPCKubernetesAWSGoogle CloudAzurePrometheusGrafanaDatadog
Nice-to-have skills
MLflowKubeflowSageMakerVertex AI
Domain expertise
aideveloper-tools
Benefits & perks
equity
Tech stack
PythonGoRustREST APIgRPCAWSGoogle CloudAzureKubernetesPrometheusGrafanaDatadog
