IPECS - Backend Developer

IPECS enables innovative and continuous R&D experience using the latest technologies, and experiences domestic and international communication solutions through various products and solutions. I hope you will pay a lot of attention to talented people who have the challenge, passion, and creativity to grow from IPECS to a global leader. We are now looking for a backend software developer to designing and developing Web service, AI & API. Your role will include all development activities such as: requirement analysis, system, architecture, software design, integration and product documentation. Our team mainly works on developing a UC (User Communication) system called iPECS-ONE and provides call, chat and collaboration service. We need back-end engineer with LLM, GenAI, and RAG development experience for AI Agent development.

Responsibilities

Requirement analysis, system, architecture, software design, integration and product documentation; Design and implement scalable core backend components based on a microservices architecture; Kubernetes-based service operations and API Gateway/MSA design (including Helm, ArgoCD, and GitOps practices); Developing AI/LLM backend integration and scalable system design (including MCP or similar interfaces); Building ELT pipelines and observability systems (logging & monitoring); AI data pipeline construction: Developing a RAG system and interactive data preprocessing using a vector database

Requirements

JavaScript, TypeScript, Node.js, Python; LLM, GenAI, and RAG development experience; Node.js/Docker, open source analysis & debugging, Linux, DB (Back-end); Experience building RAG-based chatbots using LangChain.js and other tools; Experience planning and developing hybrid services that combine rule-based and LLM-based chatbots; Experience optimizing database queries and distributed processing in enterprise-level, large-scale user environments; Web platform development experience using Node.js (Express, NestJS, etc.); Database: PostgreSQL, MySQL, Redis (Caching/Pub-Sub); Infrastructure: Docker, Kubernetes, AWS, CI/CD Pipeline; Git configuration management experience

Nice to have

Open API; various open source libraries and frameworks