{"id":1028029,"url":"https://alion.io/job/woongjin-backend-engineer-ai-gateway-bilingual-korean-english-3","title":"Backend Engineer _ AI Gateway- Bilingual (Korean/ English)","company":{"id":3369,"name":"Woongjin","domain":"woongjin.com","url":"https://alion.io/company/woongjin","size_band":null,"is_staffing_agency":false,"is_intermediary":false,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":80,"open_postings":10,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":10,"computed_at":"2026-09-23T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"hiring_geo_confidence":"structured","locations":["Plano, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":115000,"max":128000,"currency":"USD","period":"year","gross":null,"usd_annual":128000},"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Aiohttp","optional":false},{"name":"Amazon EKS","optional":false},{"name":"Apache Kafka","optional":false},{"name":"Asyncio","optional":false},{"name":"Azure","optional":false},{"name":"Azure AKS","optional":false},{"name":"Blue-Green Deployment","optional":false},{"name":"CI/CD","optional":false},{"name":"Datadog","optional":false},{"name":"Dependency Injection","optional":false},{"name":"DLP","optional":false},{"name":"Docker","optional":false},{"name":"Envoy","optional":false},{"name":"FastAPI","optional":false},{"name":"FinOps","optional":false},{"name":"GitHub Actions","optional":false},{"name":"GitLab CI","optional":false},{"name":"Google GKE","optional":false},{"name":"Grafana","optional":false},{"name":"gRPC","optional":false},{"name":"HashiCorp Vault","optional":false},{"name":"IAM","optional":false},{"name":"Istio","optional":false},{"name":"Kubernetes","optional":false},{"name":"LLM","optional":false},{"name":"Microsoft Entra ID","optional":false},{"name":"Nginx","optional":false},{"name":"Okta","optional":false},{"name":"OpenAI","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Prometheus","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"Pydantic","optional":false},{"name":"Python","optional":false},{"name":"RabbitMQ","optional":false},{"name":"Redis","optional":false},{"name":"Rest API","optional":false},{"name":"SLI/SLO/SLA","optional":false},{"name":"Terraform","optional":false},{"name":"Vault","optional":false},{"name":"WebSockets","optional":false},{"name":"AWS","optional":true},{"name":"GCP","optional":true}],"status":"live","first_seen_at":"2026-09-14T17:31:06Z","employer_posted_date":"2026-09-14","last_verified_at":"2026-09-23T19:46:12Z","board_verified":true,"closed_at":null,"days_open":9,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":9},"description":"For More Open Positions Visit us at:\nhttp://recruiting.woongjininc.com/\nOur Mission\nWOONGJIN INC. is a rapidly growing team who provides a range of unique, exceptional, and enhanced services to our clients. We have a strong moral code that includes the service of goodness without expectations of reward. We are motivated by the sense of responsibility and servant leadership.\n We are building an AI Gateway - a high-performance, secure intermediary layer that routes, inspects, and governs all traffic between enterprise clients and LLM/AI service providers. This role requires deep expertise in network programming, async Python, and cloud infrastructure to design and operate a latency-sensitive, policy-driven gateway that handles massive concurrent streaming connections at scale.\nWhat we are looking for\nAsync Python & Network Programming (3 + yrs) - Strong hands-on experience with asyncio, aiohttp/anyio, low-level TCP/UDP sockets, WebSocket & SSE servers, TLS handshake, connection-pooling, keep-alive, and zero-copy buffering.\nStreaming & Large-Payload Handling - Ability to manage chunked transfer, bidirectional streaming, back-pressure and high-throughput data paths for real-time LLM inference.\nProtocol Knowledge - Working familiarity with HTTP/2 & HTTP/3 (multiplexing, HPACK), gRPC, and occasional custom protocol parsers.\nFastAPI-Based Backend (3 + yrs) - Design, develop and test production-grade REST/Streaming APIs; pragmatic use of Pydantic, dependency injection and OpenAPI docs.\nContainerization & Kubernetes - Docker, AKS/EKS/GKE deployment experience; HPA/VPA scaling, rolling updates, and service-mesh (e.g., Istio/Envoy) basics.\nAsync Messaging & Event-Driven Design - Production use of Redis Streams, RabbitMQ or Kafka for decoupled task queues, retries and back-off logic.\nPostgreSQL & Vault - Advanced query tuning, partitioning, PgBouncer pooling, plus HashiCorp Vault (dynamic secrets, transit encryption) for key management.\nCloud Networking & Security - L4/L7 load balancing, TLS termination, reverse-proxy (NGINX/Envoy), mTLS between services, and automated cert lifecycle (ACME/Let’s Encrypt).\nIaC & CI/CD - Terraform modules for multi-env infra, plus GitHub Actions/GitLab CI pipelines with container image scanning and canary/blue-green deployments.\n Enterprise Security Gateways - Integration with CASB/DLP/WSS or similar edge-security platforms; centralized logging & audit trails.\nIAM & SSO - Configuring Azure AD/Entra ID, Okta, SAML 2.0 or OIDC SSO flows; managing Conditional Access & SCIM provisioning.\nAI/LLM Pipelines - Building prompt-engineering workflows, PII anonymisation, and monitoring Azure OpenAI (or comparable) usage, rate limits & cost.\nAPI-Gateway Operations - Custom webhook/REST integrations, circuit-breaker patterns, rate-limiting, auto-retry and health-checking.\nObservability & FinOps - End-to-end monitoring with Datadog, Prometheus/Grafana or Azure Monitor; proactive cost-optimisation and 24/7 incident response (SLA/SLO).\n Bilingual Korean Highly Prefer\n All your information will be kept confidential according to EEO guidelines.\n*****NO C2C******","description_format":"text","description_chars":3119,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false},{"language":"Korean","level":"Proficiency (C2)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Food & Beverages","EdTech Platforms","Cloud Computing","Enterprise Resource Planning (ERP)"],"lifecycle":[{"event":"open","at":"2026-09-18T12:37:33Z"}],"liveness":{"score":34,"band":"fade","label":"Fading","p_open":1,"p_active":0.435,"p_room":0.788,"age_days":8,"expected_fill_days":10,"reasons":["conf:4","stale_co","velocity","win:late"],"computed_at":"2026-09-23T05:45:00Z"},"pay":{"stated_usd_annual":128000,"is_top_pay":false},"html_url":"https://alion.io/job/woongjin-backend-engineer-ai-gateway-bilingual-korean-english-3","json_url":"https://alion.io/job/woongjin-backend-engineer-ai-gateway-bilingual-korean-english-3.json","meta":{"generated_at":"2026-09-24T01:26:02Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers"}}