Fengshuang Tan
@fengshuangtan1
Senior software engineer building AI agent and LLM infrastructure end-to-end for production reliability.
What I'm looking for
I’m a Senior Software Engineer with 10+ years at Red Hat, delivering AI Agent/LLM systems end-to-end—from architecture to production operations. I own building blocks like multi-agent RCA frameworks with LangGraph/AutoGen and RAG knowledge assistants that teams can use for 24/7 self-service.
I’m especially strong in turning messy distributed-system failures into automated, self-service tooling. I integrated LLM-based log analysis into Prow CI pipelines and added an LLM-as-judge evaluation layer so low-confidence RCA results are flagged for human review.
On the infrastructure side, I design for reliability and scalability: distributed Redis-queue pipelines, AWS EKS deployments with auto-scaling worker pools, Kubernetes readiness/liveness probes, and safe rollouts with rollback on failed health checks. I also operate CI/CD platforms on OpenShift with 100% config-as-code (JCasC), secrets management, and production-grade observability.
Beyond core delivery, I’ve led integration testing for OpenShift Platform Plus, diagnosed chronic platform instability, and improved stability from 95%+ while reducing cross-team resolution cycles. I bring a practical engineering ethos—secure, observable, test-gated workflows that reduce time-to-fix and keep production signals clean.
Experience
Work history, roles, and key accomplishments
Owned end-to-end AI agent/LLM infrastructure and CI/CD platform at Red Hat, including a RAG knowledge assistant, LLM-based log analysis in Prow pipelines, and an LLM-as-judge evaluation layer. Architected a distributed Redis-queue pipeline deployed on AWS EKS with Helm auto-scaling and zero-downtime health-check rollouts, and built an end-to-end fine-tuning workflow (QLoRA/AWQ/vLLM) to support fut
Python Developer
Designed, built, and deployed a subscription/account management platform with a Flask (WSGI) backend, Jinja2/PatternFly/Bootstrap UI, RESTful APIs, and MariaDB. Owned the deployment lifecycle across RHV, OpenShift (Tekton CI/CD), and AWS, and enforced Tekton/Jenkins release gating using Robot Framework API/UI regression suites.
Integration Test Lead
Led end-to-end integration testing for the OpenShift Platform Plus stack (OCP, ACM, ACS, Quay, ODF) and served as the primary technical escalation point for cross-component production failures. Diagnosed and resolved Quay registry instability and ACM policy deployment issues, and improved monitoring and resource right-sizing to reduce recurring OOMKill events.
Education
Degrees, certifications, and relevant coursework
Tianjin University
Bachelor's Degree in Computer Science / Engineering, Computer Science / Engineering
Earned a Bachelor's Degree in Computer Science / Engineering from Tianjin University.
Tech stack
Software and tools used professionally
GitHub
GitLab
Kubernetes
Docker Compose
Jenkins
GitHub Actions
GitLab CI
MySQL
MariaDB
Rollout
Redis
Terraform
Jira
JavaScript
Java
FastAPI
Grafana
Prometheus
OpenTelemetry
OpenStack
gRPC
Ansible
pytest
Robot Framework
Root Cause
Hugging Face
Qdrant
LangChain
Ollama
ChromaDB
Playwright
AutoGen
Trivy
vLLM
Tekton
ArgoCD
Langfuse
Score
Bash
LangGraph
LangSmith
DeepSeek
Qwen
Task
Factory
Namespace
LLaMA-Factory
Availability
Location
Authorized to work in
Job categories
Skills
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