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I am a seasoned AI Application Development Engineer with 15 years of hands-on software development and system architecture design, focusing on high-concurrency processing, performance optimization, and building stable, scalable enterprise-level technical solutions. I have extensive experience in building AI-driven knowledge bases, RAG pipelines, and multi-model orchestration using LangChain, LlamaIndex, and BERT-based architectures. In recent years I led end-to-end security, data privacy, and large-model deployment initiatives, including zero-trust architectures, encryption, and secure model integration. I enjoy turning complex requirements into robust, scalable systems and mentoring teams through challenging AI engineering problems, while continuously exploring new AI tools and technologies to keep solutions cutting-edge.…I am a seasoned AI Application Development Engineer with 15 years of hands-on software development and system architecture design, focusing on high-concurrency processing, performance optimization, and building stable, scalable enterprise-level technical solutions. I have extensive experience in building AI-driven knowledge bases, RAG pipelines, and multi-model orchestration using LangChain, LlamaIndex, and BERT-based architectures. In recent years I led end-to-end security, data privacy, and large-model deployment initiatives, including zero-trust architectures, encryption, and secure model integration. I enjoy turning complex requirements into robust, scalable systems and mentoring teams through challenging AI engineering problems, while continuously exploring new AI tools and technologies to keep solutions cutting-edge.

user1540363

AI Engineer, Data Scientist, Full Stack Developer, +2

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I am a seasoned AI Application Development Engineer with 15 years of hands-on software development and system architecture design, focusing on high-concurrency processing, performance optimization, and building stable, scalable enterprise-level technical solutions. I have extensive experience in building AI-driven knowledge bases, RAG pipelines, and multi-model orchestration using LangChain, LlamaIndex, and BERT-based architectures. In recent years I led end-to-end security, data privacy, and large-model deployment initiatives, including zero-trust architectures, encryption, and secure model integration. I enjoy turning complex requirements into robust, scalable systems and mentoring teams through challenging AI engineering problems, while continuously exploring new AI tools and technologies to keep solutions cutting-edge.…I am a seasoned AI Application Development Engineer with 15 years of hands-on software development and system architecture design, focusing on high-concurrency processing, performance optimization, and building stable, scalable enterprise-level technical solutions. I have extensive experience in building AI-driven knowledge bases, RAG pipelines, and multi-model orchestration using LangChain, LlamaIndex, and BERT-based architectures. In recent years I led end-to-end security, data privacy, and large-model deployment initiatives, including zero-trust architectures, encryption, and secure model integration. I enjoy turning complex requirements into robust, scalable systems and mentoring teams through challenging AI engineering problems, while continuously exploring new AI tools and technologies to keep solutions cutting-edge.

Available to hire

I am a seasoned AI Application Development Engineer with 15 years of hands-on software development and system architecture design, focusing on high-concurrency processing, performance optimization, and building stable, scalable enterprise-level technical solutions. I have extensive experience in building AI-driven knowledge bases, RAG pipelines, and multi-model orchestration using LangChain, LlamaIndex, and BERT-based architectures. In recent years I led end-to-end security, data privacy, and large-model deployment initiatives, including zero-trust architectures, encryption, and secure model integration.

I enjoy turning complex requirements into robust, scalable systems and mentoring teams through challenging AI engineering problems, while continuously exploring new AI tools and technologies to keep solutions cutting-edge.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Chinese

Fluent

Work Experience

Principal System Backend Engineer / Security Architect at Beijing Zhixiang Technology Co., Ltd.

July 20, 2015 - April 20, 2024

Led enterprise-scale security engineering and backend system design. Implemented zero-password storage and secure authentication, AES-256-GCM encryption across transport layers, and a comprehensive security architecture for enterprise AI platforms. Architected retrieval-augmented generation (RAG) pipelines, language-model risk controls, multi-tenant access controls, and continuous security hardening. Built end-to-end knowledge management and documentation workflows integrated with consented document approval, AI-assisted auditing, and Docker/Kubernetes deployment to support scalable, secure enterprise solutions.

Senior AI/ML Engineer – Large Model Content Security Platform at Beijing Zhixiang Technology Co., Ltd.

April 20, 2024 - December 20, 2025

Led development of a large-model content security platform: real-time detection of risk signals such as prompt injection, PII leakage, harmful content, sentiment analysis, and multi-dimension content screening across the end-to-end user request chain. Implemented streaming chunks, Redis caching, and a gated security pipeline with a modern API gateway; deployed with Docker/Kubernetes for enterprise-grade protection.

AI Knowledge Base Integration Engineer – LangGraph & Max KB RAG at Beijing Zhixiang Technology Co., Ltd.

July 1, 2024 - June 30, 2025

Designed and implemented enterprise knowledge base integration using LangGraph/LangChain for retrieval-augmented generation. Built cross-node architecture, permissioned access, doc-approval workflows, and microservice deployment with Docker/Kubernetes. Implemented secure document handling and evaluation pipelines for RAG workflows.

Embedded Software Development Engineer at Beijing Shenzhen Aerospace Software Technology Co., Ltd.

August 1, 2010 - April 1, 2012

Ported RTOS to new hardware platforms (e.g., SPARC), customized BSP, kernel drivers, and application layer for embedded systems. Contributed to embedded software design, real-time behavior, and hardware/software integration.

Principal System Backend Engineer / Security Architect at Beijing Shenzhen Aerospace Software Technology Co., Ltd.

July 1, 2015 - April 1, 2024

Led system backend engineering and security architecture for enterprise AI platforms. Implemented security practices (zero-trust concepts, encryption, and secure communications) and designed scalable, robust architectures to support AI workloads and large-model deployments.

Large Model Content Security Platform Engineer at Beijing Zhixiang Technology Co., Ltd.

April 1, 2024 - June 1, 2025

Built a large-model content security platform with real-time detection of security risks such as prompt injections and data leakage; implemented sentiment analysis, content safety controls, and end-to-end security across the full user request lifecycle including containerized deployment and integration with customer networks.

AI Project Experience at Beijing Zhixiang Technology Co., Ltd.

November 20, 2025 - December 20, 2025

Led an internal AI documentation RAG knowledge-base project, building a knowledge base and intelligent Q&A/document retrieval system for R&D teams using LangChain 1.0 and async pipelines; designed dual-layer prompt optimization and retrieval strategies.