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Hi, I'm William Nguyen, a Senior Full Stack Engineer with 10+ years of experience delivering AI-powered platforms, web systems, and developer tools across high-growth startups and enterprise environments. I enjoy turning complex problems into scalable solutions and collaborating with diverse teams to ship reliable software. I specialize in building agentic AI workflows, designing observable architectures, and ensuring end-to-end traceability and compliance. I love applying modern tech stacks—from React and Node to FastAPI, AI tooling, and secure, auditable workflows—to deliver impactful products.…Hi, I'm William Nguyen, a Senior Full Stack Engineer with 10+ years of experience delivering AI-powered platforms, web systems, and developer tools across high-growth startups and enterprise environments. I enjoy turning complex problems into scalable solutions and collaborating with diverse teams to ship reliable software. I specialize in building agentic AI workflows, designing observable architectures, and ensuring end-to-end traceability and compliance. I love applying modern tech stacks—from React and Node to FastAPI, AI tooling, and secure, auditable workflows—to deliver impactful products.

William Nguyen

Full Stack Developer, Front-End Developer, Back-End Developer, +2

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Hi, I'm William Nguyen, a Senior Full Stack Engineer with 10+ years of experience delivering AI-powered platforms, web systems, and developer tools across high-growth startups and enterprise environments. I enjoy turning complex problems into scalable solutions and collaborating with diverse teams to ship reliable software. I specialize in building agentic AI workflows, designing observable architectures, and ensuring end-to-end traceability and compliance. I love applying modern tech stacks—from React and Node to FastAPI, AI tooling, and secure, auditable workflows—to deliver impactful products.…Hi, I'm William Nguyen, a Senior Full Stack Engineer with 10+ years of experience delivering AI-powered platforms, web systems, and developer tools across high-growth startups and enterprise environments. I enjoy turning complex problems into scalable solutions and collaborating with diverse teams to ship reliable software. I specialize in building agentic AI workflows, designing observable architectures, and ensuring end-to-end traceability and compliance. I love applying modern tech stacks—from React and Node to FastAPI, AI tooling, and secure, auditable workflows—to deliver impactful products.

Available to hire

Hi, I’m William Nguyen, a Senior Full Stack Engineer with 10+ years of experience delivering AI-powered platforms, web systems, and developer tools across high-growth startups and enterprise environments. I enjoy turning complex problems into scalable solutions and collaborating with diverse teams to ship reliable software.

I specialize in building agentic AI workflows, designing observable architectures, and ensuring end-to-end traceability and compliance. I love applying modern tech stacks—from React and Node to FastAPI, AI tooling, and secure, auditable workflows—to deliver impactful products.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Senior AI Full Stack Developer at ProveAI

February 1, 2024 - Present

Led development of an AI agent orchestration platform enabling internal teams to deploy and manage autonomous agents with configurable workflows, rule-based execution, and real-time observability across task pipelines. Built an AI Agent Console with live session playback, flow tracking, real-time status indicators, and embedded error modals for rapid diagnosis. Implemented backend orchestration using FastAPI and Node.js to support persistent prompt-response chaining, agent coordination via event queues, and scalable handling of concurrent tasks with PostgreSQL for metadata and Redis for session state. Created a real-time incident monitoring system that generates alerts and logs recovery history for audits. Integrated modular brain architecture (memory-perception-action) and Model Context Protocol (MCP) for cross-LLM interoperability. Employed AWS Bedrock, SageMaker, Lambda, and Kendra; LangGraph for reasoning-driven workflows; and Hedera Hashgraph for blockchain-based immutable audit l

Senior Software Engineer at Booz Allen Hamilton

September 1, 2022 - January 1, 2024

Built a scalable HR automation system reducing manual workload by 60%, including training, compliance, and employee services via automation and AI. Developed a conversational HR chatbot using LLaMA 2 with document-aware responses and implemented RAG pipelines with vector databases for context-rich answers from handbooks and compliance documents. Delivered responsive UIs with TypeScript, Tailwind CSS, and Vue, plus reusable component libraries. Created RESTful and event-driven APIs (NestJS, FastAPI, WebSockets) for real-time notifications and role-based views. Integrated external HR systems (Workday, SAP SuccessFactors, ADP, Active Directory) using OAuth2, SAML SSO, and custom connectors. Tailored HIPAA-compliant workflows for a healthcare startup using FHIR. Designed a cross-platform mobile app (Ionic Vue). Established CI/CD with GitHub Actions, Jenkins, Terraform; deployed with Docker/Kubernetes/Helm and RBAC. Collaborated across Agile teams with Jira, Figma, Confluence.

Full Stack Developer at Intellectyx

March 1, 2019 - July 1, 2022

Developed MASQ web browser using React.js and Electron.js, achieving a 20% increase in user engagement via a global visualization feature with 3D Earth interactions. Built a desktop interface with folder creation and multi-tab system, and implemented real-time network speed monitoring to boost user satisfaction by 25%. Enhanced accessibility through localization and internationalization. Created MASQ Chrome extension, automated software updates with 90% adoption, and introduced a built-in chat for thousands of users. Designed reusable components and front-end libraries, boosting development efficiency by 20%. Participated in continuous professional development to stay ahead of trends.

Software Engineer at RCT Systems

July 1, 2017 - February 1, 2019

Developed full-stack enterprise applications using Java (Spring Boot) on the backend and Angular on the frontend to support data monitoring, analysis, and workflow automation. Designed RESTful APIs with robust data validation and security middleware. Built interactive dashboards and visualizations, integrated SQL databases (PostgreSQL/MySQL), and authored unit/integration tests with JUnit, Mockito, Karma/Jasmine. Implemented CI pipelines with Jenkins and collaborated in cross-functional teams through architecture reviews and secure code audits.

Software Engineer at Apple

February 1, 2014 - June 1, 2017

Developed dynamic data visualizations with D3.js and maintained Redux-based state management for large datasets. Contributed to component-based architecture, performance optimizations (lazy loading, code-splitting), and internal UI libraries for consistency. Maintained 100% unit and integration test coverage (Jest, Enzyme), improved accessibility (ARIA, WCAG), and enhanced SEO metadata for internal portals and documentation.