Sie Ren-Bin
AI Agent / LLM Application Engineer with a frontend foundation — agent tooling, RAG/MCP integrations, and the UIs that ship them.
About
Software engineer building web apps since 2022, including banking and e-commerce client work, now focused on AI agents. Currently a vendor engineer at Google via Wipro, working on an internal browser-to-device web console. Builds multi-agent pipelines, agent-callable tools and guardrail hooks for Claude Code, Codex, Pi and Antigravity, with cited retrieval and MCP integrations, and has wired OpenAI, Claude, Gemini and local open-source models (Ollama) behind one provider interface. Works directly with business stakeholders to turn requirements into shipped features.
Work Experience
WiproClient: GoogleVendor
Software Engineer · Developer Tools
Device Developer Tooling: • Develop Angular front-end features and back-end endpoints for an internal web console that connects to devices from the browser (Web Serial/WebUSB) to speed up device development; now in dogfood • Standardized how the web console's front-end and back-end dev servers run and ran a code-health pass, using internal AI coding agents with project rules as agent memory, agent skills and plan-mode reviews
Usability: • Drafted the web console's dogfood survey on usability for non-technical users (tooltips, docs, clarity on tracked activity) and filed usability bugs found in testing
LityoClient: Cathay United BankOnsite
Front End Developer
Architecture & Delivery: • Architected a modular Angular 18 CMS, reducing new page development time by 40% and improving code reusability across 15+ components; built its modules from bank business units' requirements
Team Enablement: • Implemented the secure authentication system and API architecture, enabling 2+ team members to independently develop and debug features with 50% faster onboarding
Code Quality: • Abstracted data-flow libraries and established coding standards, improving code readability and maintenance efficiency by 35%
Infrastructure: • Deployed the development environment inside the bank's air-gapped network, meeting strict security requirements
Seidor APAHybris
Front End Developer
Client Delivery & Performance: • Led the CSR-to-SSR migration of Falcon Pack's live SAP Commerce storefront (UAE), improving initial page load time by 60% and SEO performance; worked directly with the client from a Spain-based team
Architecture & Scalability: • Refactored the Redux state-management architecture, reducing code complexity by 30% and enabling seamless data sharing across 4+ team members
Critical Bug Resolution: • Resolved a critical payment-session bug affecting 15% of checkout transactions
Development Velocity: • Established a cross-device testing workflow (Ngrok, Android Studio) and custom NPM modules, accelerating development velocity by 45%
éŸ‹çˆ»ç ”ç–Onsite
Front End Developer
Project Foundation: • Architected the Next.js project foundation: folder structure, CSS conventions, formatting rules, and a Git branching strategy for separate development and production environments
Data Architecture: • Designed the data-flow architecture (Props, Context, Redux, Local Storage) with consistent API-fetching patterns across 20+ components
Education
National Taiwan Normal University
Skills
AI Agents & Tooling
LLM APIs & Models
Retrieval & Tools
Front End
Back End
Practice
Projects
Multi-agent Claude Code plugin (also on Codex, Pi, Antigravity) turning URLs, videos and text into linked Obsidian notes: eight prompt-defined agents run a discover → distill → render → integrate pipeline, with cited vault retrieval, Notion MCP intake and web-clipper, a companion agent-callable clipper built on Obsidian Web Clipper. v1.8.1, 88 unit tests.
ai-dotfiles
One agent toolkit for four coding-agent CLIs from a single source: 17 original skills plus adapted community ones, shared MCP config, and guardrail hooks such as a PreToolUse hook that gives each agent task its own git worktree (1,388 lines, 107 tests); a nightly headless Claude Code run, limited to one allowlisted command, writes a personal dev log. 654 tests in CI.
Natural-language-to-shell CLI forked from Builder.io's ai-shell. Refactored its OpenAI-only code into one provider interface over OpenAI, Claude, Gemini and local open-source models via Ollama, with streams normalized to one SSE shape and 121 tests.