Backend Platform Engineer - Scalable APIs & Multi-Tenancy

RadixArk; Palo Alto (CA); Hybrid; USD 120,000 - 160,000; Full time

Benefits offered by this job

Equity

Comprehensive health benefits

Flexible work arrangements

Job summary

RadixArk is hiring a Backend/Platform Engineer to develop high-performance production APIs for SGLang and Miles. Candidates should possess over 4 years of experience in backend systems, APIs, and distributed platforms.

Strong skills in Python, Go, or Rust are required. The position offers competitive compensation, equity, and flexible work arrangements at a leading AI infrastructure company.

Qualifications

• 4+ years experience building production backend systems, APIs, or platform infrastructure.
• Strong proficiency in Python, Go, or Rust with production-quality code standards.
• Experience designing and building REST/gRPC APIs at scale.

Responsibilities

• Design and build production APIs for SGLang and Miles: REST/gRPC endpoints, client SDKs.
• Implement authentication, authorization, and rate limiting systems for multi-tenant deployments.
• Build control plane infrastructure: job scheduling, resource allocation, model deployment management.

Skills

Python

Go

Rust

REST/gRPC APIs

Distributed systems

Cloud platforms (AWS, GCP, Azure)

Kubernetes

Monitoring tools (Prometheus, Grafana, DataDog)

Education

Bachelor's or Master's degree in Computer Science, Engineering, or equivalent industry experience

Job description

RadixArk is hiring a Backend/Platform Engineer to develop high-performance production APIs for SGLang and Miles. Candidates should possess over 4 years of experience in backend systems, APIs, and distributed platforms.

Strong skills in Python, Go, or Rust are required. The position offers competitive compensation, equity, and flexible work arrangements at a leading AI infrastructure company.