Patrick Yuen
Patrick Yuen

agentic software engineer

Actively looking · Member since 1 Oct 2026
Location
Jersey, United States
Desired salary
100k–200k USD/yearly
Work preference
Remote Only / Full Time, Contract
Experience level
Senior

About

Professional summary

Senior AI Engineer with 10 years of hands-on experience spanning backend and full-stack development, cloud-native systems, machine learning, NLP, and Generative AI.
Specializes in building production-ready LLM applications, retrieval-augmented generation (RAG) platforms, hybrid vector search, agentic workflows, prompt pipelines, evaluation frameworks, guardrails, and observable AI services.
Proficient in Python, FastAPI, AWS, Kubernetes, Docker, distributed systems, APIs, data pipelines, and MLOps. Experienced in collaborating across product, data, and engineering teams, mentoring junior engineers through code reviews and knowledge sharing, and translating business requirements into reliable, scalable AI solutions.

Notice period: immediately

Tech stack & tools

Working toolkit

Application Hosting

Data Stores

Design

Experience

Career history

Senior AI Engineer / Generative AI Engineer JPMorgan Chase

Build secure enterprise GenAI and agentic-AI capabilities for banking operations, risk, and technology teams, owning RAG design, agent orchestration, evaluation, production reliability, and cloud deployment across high-governance workflows.
Designed multi-agent investigation workflows that decompose complex requests, gather evidence, compare findings, and produce cited recommendations for human review.
• Built enterprise RAG across policies, procedures, regulatory guidance, historical cases, architecture documents, and ownership metadata.
• Engineered hybrid retrieval using dense embeddings, keyword search, metadata filters, query rewriting, evidence-aware reranking, and context deduplication.
• Implemented governed LLM tool calling for case search, policy retrieval, workflow status, service telemetry, and approved actions with scoped permissions and audit records.
• Established AI evaluation covering retrieval recall, groundedness, case-resolution accuracy, task completion, hallucinations, latency, and cost.
• Improved grounded-answer accuracy by 24% and reduced end-to-end latency by 31% through chunking, reranking, citation validation, parallel tool execution, caching, streaming, and model routing.
• Added prompt-injection screening, PII controls, least-privilege actions, human approval gates, deterministic validation, fallbacks, and output-policy checks.
• Deployed autoscaled AI services on Kubernetes and AWS with OpenTelemetry tracing, quality dashboards, spend alerts, safe rollouts, and automated rollback.

Machine Learning Engineer Prudential Financial

Built production insurance ML and document-intelligence services that transformed forms, correspondence, claim events, and policy data into structured features, classifications, prioritization signals, and recommendation workflows.
• Built Kafka and Spark pipelines to ingest claim events, scanned documents, correspondence, policy metadata, and workflow outcomes into model-ready features.
• Developed document extraction and classification models for form type, coverage attributes, claim intent, missing information, and processing priority.
• Trained NLP classifiers for topic, urgency, sentiment, and routing of adjuster notes and customer correspondence.
• Created recommendation and ranking services that prioritized processing queues and surfaced related policies, prior cases, and likely next steps.
• Improved document-routing precision by 19% through layout-aware features, hard-negative sampling, calibrated thresholds, and error analysis with claims specialists.
• Standardized experimentation, model registry, approvals, lineage, reproducibility, and rollback using MLflow.
• Delivered low-latency model-serving APIs with FastAPI and gRPC, Redis caching, batch inference, graceful fallback, and Kubernetes-based canary deployment.
• Implemented monitoring for drift, feature freshness, prediction distributions, latency, errors, and downstream outcome quality.

Software Development Engineer Accenture

Modernized Prudential policy-servicing and claims integration across legacy and cloud systems, owning APIs, event-driven services, AWS migration, resilience patterns, performance optimization, and operational tooling.
• Owned Java and Spring Boot APIs for policy lookup, customer updates, document status, claim intake, and servicing workflow actions.
• Designed event-driven integration services with Amazon Kinesis, SQS, and SNS to process policy and claim events across operational systems.
• Integrated rules and risk-scoring outputs into low-latency, versioned APIs with validation, explainability metadata, and fallback logic.
• Reduced p95 API latency by 37% through Redis caching, DynamoDB access-pattern redesign, request coalescing, and parallel downstream calls.
• Migrated services to AWS using ECS, Lambda, API Gateway, RDS, DynamoDB, S3, CloudWatch, and Terraform-managed infrastructure.
• Improved resilience with idempotent consumers, circuit breakers, bounded retries, dead-letter recovery, health checks, and operational runbooks.
• Built React and TypeScript dashboards for claim intake, document exceptions, processing lag, service health, and operational workload.
• Expanded unit, integration, consumer-contract, load, and failure-recovery testing in CI/CD and contributed to architecture and production-readiness reviews.

Education

Learning history

New York University

Bachelor Degree, Computer Science

orithms & Data Structures, Database Systems, Software Engineering, Computer Networks, Operating Systems, Artificial Intelligence, Machine Learning, Distributed Systems

Academic Project / Thesis:
Intelligent Document Classification and Information Retrieval — Designed a machine-learning-based system for classifying documents and retrieving relevant information using NLP techniques, with emphasis on feature extraction, ranking, and evaluation.

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