CareerPlan

Software Engineer – Senior Backend

SeoulFull-time2026-10-26 → 2026-11-08

Core

Senior Backend Engineer owning the business logic layer for an AI inference platform, serving enterprises across clouds with authentication, billing, and multi-tenant isolation.

Role type

Senior IC backend engineer (AI platform)

Builds

Production-grade APIs, multi-tenant SaaS infrastructure, and data pipelines for AI inference

Domain

Generative AI infrastructure, multi-cloud SaaS

Deliverable

production ML models

Required skills

Python, distributed systems, API design (REST/gRPC/GraphQL), PostgreSQL, ClickHouse, multi-tenant architecture, observability

Preferred skills

Kubernetes, LLM serving, incident response, SDK/CLI development

Technologies

FastAPI, PostgreSQL, ClickHouse, OpenTelemetry, Kubernetes

Responsibilities

Own architecture of core backend microservices; Design and build production-grade APIs; Build enterprise platform capabilities (auth, RBAC, billing); Develop AI-specific features (LLM deployment workflows); Design and optimize data models across OLTP and OLAP systems; Collaborate on multi-cloud deployment; Set reliability standards and resolve production issues; Drive engineering quality via testing and CI/CD

Seniority

Senior, hands-on IC