Senior Backend Engineer for AI Gateway (Korean Req)

SBT Global, Inc.; Plano (TX); On-site; USD 120,000 - 160,000; Full time

Job summary

SBT Global, Inc. in Plano, TX seeks a seasoned backend engineer for a 1-year contract on-site.

You will own the full-stack lifecycle of a high-performance AI gateway, from core Python API service design to containerization, deployment, monitoring, and day-to-day operations. You will work solo on the application code, tests, CI/CD pipelines, and production operations with autonomy, shaping a production-grade system to route, inspect, and govern traffic between enterprise clients and AI service

Qualifications

• Around 5 years of professional backend development experience building and operating production-grade services.
• Deep understanding of asyncio and production experience with FastAPI (Pydantic, DI, OpenAPI).
• Strong grasp of HTTP/1.1, HTTP/2, and Server-Sent Events for real-time LLM inference streaming.
• Practical understanding of TCP/IP lifecycle, connection pooling, keep-alive, and back-pressure management.
• Proficiency in PostgreSQL and query tuning, including pooling via PgBouncer.
• Experience with message queues or event streams (Redis Streams, RabbitMQ, or Kafka).
• Containerization & CI/CD: Docker, Kubernetes, and setting up CI/CD pipelines (GitHub Actions / GitLab CI).
• Collaborative security and Infra awareness: NGINX/Envoy reverse-proxy setup, mTLS, IAM/SSO integrations.
• AI/LLM integration: handling LLM API payloads and rate limits, proxy/gateway patterns for AI services.
• Infrastructure as Code: basic familiarity with Terraform for multi-env infra management.

Responsibilities

• Own the full-stack lifecycle of the AI gateway from core Python API service design to containerization, deployment, monitoring, and day-to-day operations.
• Develop, test, and maintain the application code, tests, and CI/CD pipelines with minimal external dependencies.
• Manage production deployment, observability, and operations to ensure reliability at scale.
• Collaborate with security/network teams on architecture reviews, threat modeling, and policy definitions.
• Scale a robust, production-grade system for real-time LLM inference streaming and high-throughput traffic routing.

Skills

Async Python

FastAPI

HTTP/2

PostgreSQL

Docker

Kubernetes

CI/CD

Redis Streams

NGINX / Envoy

mTLS

Terraform

OpenAPI

Tools

GitHub Actions

CI/CD Pipelines

PgBouncer

Job description

SBT Global, Inc. in Plano, TX seeks a seasoned backend engineer for a 1-year contract on-site.

You will own the full-stack lifecycle of a high-performance AI gateway, from core Python API service design to containerization, deployment, monitoring, and day-to-day operations. You will work solo on the application code, tests, CI/CD pipelines, and production operations with autonomy, shaping a production-grade system to route, inspect, and govern traffic between enterprise clients and AI service