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I'm Wilbert Pangilinan, a senior frontend-oriented software engineer with 4+ years of professional experience specializing in TypeScript, advanced type systems, and scalable JavaScript architectures. I take ownership of frontend architecture, ensure strong type safety, and deliver production-grade results across React and Node.js ecosystems. I have a track record of guiding AI-assisted code generation and improving model accuracy by over 35% through precise type modeling and prompt-driven workflows. I'm passionate about clean architecture, design patterns, and cross-team collaboration. I enjoy evaluating step-by-step AI reasoning, identifying flaws in type modeling and architectural thinking, and delivering reference implementations that are robust and production-ready. I have contributed to AI training datasets and optimized AI response quality for engineers at scale, helping ensure reliable AI models used by teams worldwide.…I'm Wilbert Pangilinan, a senior frontend-oriented software engineer with 4+ years of professional experience specializing in TypeScript, advanced type systems, and scalable JavaScript architectures. I take ownership of frontend architecture, ensure strong type safety, and deliver production-grade results across React and Node.js ecosystems. I have a track record of guiding AI-assisted code generation and improving model accuracy by over 35% through precise type modeling and prompt-driven workflows. I'm passionate about clean architecture, design patterns, and cross-team collaboration. I enjoy evaluating step-by-step AI reasoning, identifying flaws in type modeling and architectural thinking, and delivering reference implementations that are robust and production-ready. I have contributed to AI training datasets and optimized AI response quality for engineers at scale, helping ensure reliable AI models used by teams worldwide.

Wilbert Pangilinan

Full Stack Developer, Front-End Developer, Back-End Developer, +6

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I'm Wilbert Pangilinan, a senior frontend-oriented software engineer with 4+ years of professional experience specializing in TypeScript, advanced type systems, and scalable JavaScript architectures. I take ownership of frontend architecture, ensure strong type safety, and deliver production-grade results across React and Node.js ecosystems. I have a track record of guiding AI-assisted code generation and improving model accuracy by over 35% through precise type modeling and prompt-driven workflows. I'm passionate about clean architecture, design patterns, and cross-team collaboration. I enjoy evaluating step-by-step AI reasoning, identifying flaws in type modeling and architectural thinking, and delivering reference implementations that are robust and production-ready. I have contributed to AI training datasets and optimized AI response quality for engineers at scale, helping ensure reliable AI models used by teams worldwide.…I'm Wilbert Pangilinan, a senior frontend-oriented software engineer with 4+ years of professional experience specializing in TypeScript, advanced type systems, and scalable JavaScript architectures. I take ownership of frontend architecture, ensure strong type safety, and deliver production-grade results across React and Node.js ecosystems. I have a track record of guiding AI-assisted code generation and improving model accuracy by over 35% through precise type modeling and prompt-driven workflows. I'm passionate about clean architecture, design patterns, and cross-team collaboration. I enjoy evaluating step-by-step AI reasoning, identifying flaws in type modeling and architectural thinking, and delivering reference implementations that are robust and production-ready. I have contributed to AI training datasets and optimized AI response quality for engineers at scale, helping ensure reliable AI models used by teams worldwide.

Available to hire

I’m Wilbert Pangilinan, a senior frontend-oriented software engineer with 4+ years of professional experience specializing in TypeScript, advanced type systems, and scalable JavaScript architectures. I take ownership of frontend architecture, ensure strong type safety, and deliver production-grade results across React and Node.js ecosystems. I have a track record of guiding AI-assisted code generation and improving model accuracy by over 35% through precise type modeling and prompt-driven workflows.

I’m passionate about clean architecture, design patterns, and cross-team collaboration. I enjoy evaluating step-by-step AI reasoning, identifying flaws in type modeling and architectural thinking, and delivering reference implementations that are robust and production-ready. I have contributed to AI training datasets and optimized AI response quality for engineers at scale, helping ensure reliable AI models used by teams worldwide.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Japanese

Intermediate

Work Experience

Full Stack Engineer at Wallstreet.io

November 2, 2025 - November 2, 2025

Led architecture and interface design for a scalable stock trading application using Angular 13+, NgRx, and SCSS for 5,000 concurrent users. Built responsive dashboards with Angular Flex Layout and Sass MQ, performed AB testing on layouts, and contributed to a 10% reduction in bounce rate. Delivered trading features in fast-paced Agile sprints, supporting a revenue increase of $50K within three months. Mentored junior developers on component reuse, layout logic, and best practices, enforcing code reviews and achieving a 15% reduction in defects. Established state persistence using NgRx Effects and Entity, improving workflow reliability by 20%. Upgraded Angular framework from v13 to v14, resolving 100+ dependency issues and improving maintainability. Integrated socket.io client for real-time data streams, reducing data latency by 15%. Optimized DevOps with Dockerized environments and source-map tuning, increasing deployment frequency by 30%. Implemented Cypress and Jest test automation

Full Stack Engineer at Ringbook.io

November 2, 2024 - November 2, 2024

Architected and implemented a modular front-end foundation using React 19, TypeScript 5.x, and Vite, enabling code-splitting, lazy loading, and prefetch strategies to improve first-page load times by 20% for 10,000+ monthly visitors across platforms. Designed and automated PDF data extraction pipelines with LangChain, pdf-lib, and OpenAI models, building custom parsers for complex documents; achieved 95%+ field-level accuracy and reduced manual data entry time by 50%. Devised and deployed AI-driven reconciliation workflows with LangChain, Claude, and rule-based logic to match transactional data, cutting manual accounting workload by 40% (~15 hours/week) while improving error detection. Implemented collaborative documentation editing (TipTap Pro), WebSocket synchronization, and conflict resolution to support simultaneous multi-user edits, boosting doc collaboration by 30% and team productivity by 25%. Visualized large-scale financial data (1M+ rows) using Recharts and TanStack Table wit

JavaScript Developer at KillerGF

April 2, 2023 - April 2, 2023

Developed and deployed a mining dApp using React, TypeScript, Redux Toolkit, and Styled Components, with Firebase Hosting and CI/CD workflows for rapid deployment. Implemented lazy-loading and Redux persistence to optimize performance, generating 70+ qualified leads in the first month. Mentored two junior frontend developers, established architecture standards, testing frameworks (Jest, React Testing Library), and PR guidelines, boosting frontend test coverage by 30%. Built scalable blockchain data connections via Alchemy and Infura APIs, and integrated OpenSea marketplace endpoints for live NFT metadata, listings, and floor prices, contributing to a 25% increase in conversion rates. Integrated a Unity-based WebGL game into the React ecosystem, driving a 10% increase in session duration and improving user retention through interactive gameplay.

Lead Frontend Developer at Wall Street.io

September 2, 2024 - November 2, 2025

Led frontend architecture and development of a real-time trading platform serving 50,000+ concurrent users, delivering low-latency, scalable, and SEO-optimized performance. Architected Angular 13–14+ apps with RxJS; built real-time dashboards using WebSockets and Socket.IO; mentored engineers; implemented CI/CD pipelines; improved onboarding efficiency.

Senior Frontend Architect at Ringbook.io

February 2, 2023 - November 2, 2024

Owned frontend architecture for a React + TypeScript SaaS platform with 10,000+ MAUs; designed modular React + Vite architecture; improved UI stability and developer velocity. Built AI-assisted document review using OpenAI API + LangChain, achieving 95% validation accuracy and reducing manual review time by ~40%. Implemented real-time collaborative editing with WebSockets + TipTap Pro, increasing user engagement by 25%. Introduced monorepo architecture with shared TypeScript models to improve safety across services.

Senior Frontend Developer at Teladoc Health

August 2, 2022 - March 2, 2023

Developed HIPAA-compliant React + TypeScript applications for a telehealth platform; improved clinician efficiency and patient experience; integrated real-time data visualizations and optimized bundle sizes via code-splitting and memoization.

Junior Frontend Developer at KillerGF

September 2, 2021 - July 2, 2022

Built and optimized React + Web3 interfaces for a blockchain gaming platform; enhanced UX, improved front-end performance, audited Solid contracts (ERC-721 / 721A), and integrated NFT analytics dashboards.

Lead Frontend Developer / Senior JavaScript Architect at Wallstreet.io

September 2, 2024 - November 2, 2025

Led the frontend architecture and development of a real-time trading platform serving 50,000+ concurrent users; delivered low-latency, scalable, and SEO-optimized performance. Architected Angular 13–14 + NgRx applications, improving UI stability by 20% and reducing support tickets by 25%. Built real-time trading dashboards with WebSockets and Socket.IO, reducing latency by 15% and enhancing trader responsiveness. Migrated Angular 13 → 14, resolving 100+ dependency issues and boosting release velocity by 30%. Automated E2E testing with Cypress + Jest, reducing regressions by 20%. Mentored 5 engineers and defined code-review and architecture standards that cut PR cycle time by 25% and improved onboarding efficiency by 30%.

Senior JavaScript Developer (Frontend Architect) at Ringbook.io

February 2, 2023 - November 2, 2024

Owned frontend architecture for a React + TypeScript SaaS platform with 10,000+ MAUs, focusing on performance, scalability, and AI-assisted workflows. Designed modular React + Vite architecture, increasing developer velocity and cross-team productivity by 30%. Optimized rendering with memoization and fine-grained state management. Built AI-assisted document review using OpenAI API + LangChain, achieving 95% validation accuracy and reducing manual review time by 40%. Implemented real-time collaborative editing with WebSockets + Tiptap Pro, increasing user engagement by 25%. Introduced monorepo architecture and shared TypeScript models to improve safety across services.

Frontend Developer (JavaScript / Web3 Developer) at Teladoc Health

August 2, 2022 - March 2, 2023

Developed HIPAA-compliant React + TypeScript applications for Teladoc’s telehealth platform, improving clinician efficiency and patient experience. Delivered features that boosted patient engagement by 30% and reduced UI incidents by 25%. Improved lazy loading, code-splitting, and memoization. Collaborated with Product, QA, and Backend to meet strict security and compliance standards. Integrated third-party APIs for real-time patient data visualization.

Frontend Developer (JavaScript / Web3 Developer) at KillerGF

September 2, 2021 - July 2, 2022

Built and optimized React + Web3 interfaces for a blockchain gaming platform, enhancing UX and on-chain performance. Increased user engagement and retention through frontend optimization. Audited Solidity contracts (ERC-721 / ERC-721A) to reduce gas fees by 25%. Integrated NFT analytics dashboards via Alchemy, Infura, and OpenSea APIs. Brought Unity WebGL gameplay into the web platform to raise session times by 15%. Implemented NFT analytics dashboards and introduced a modular React + Vite architecture, increasing developer velocity and cross-team productivity by 30%.

Lead Frontend Developer (Senior JavaScript Developer) at Wallstreet.io

September 1, 2024 - November 1, 2025

Reviewed large volumes of AI-generated TypeScript code, pinpointing advanced type modeling issues and improving correctness across datasets by 40%. Authored high-quality reference solutions with generics, interfaces, and utility types to guide AI learning and standardize outputs. Evaluated step-by-step reasoning in AI responses to detect logical errors and architectural flaws, reducing invalid solutions by 30%. Validated React and Node.js implementations to ensure production-grade feasibility. Produced clear technical explanations that adhered to prompts, increasing instruction-following accuracy by 25%. Ranked and compared multiple AI responses to optimize model performance. Applied OO and FP principles to correct flawed designs. Collaborated via Git workflows, reviewing PRs and maintaining consistent evaluation standards. Enhanced AI response fluency and clarity, strengthening downstream developer usability metrics, and contributed to training datasets used by multiple large-scale AI

Frontend Developer (JavaScript Developer) at Teladoc Health

August 1, 2022 - March 1, 2023

Reviewed TypeScript and JavaScript examples for healthcare-oriented use cases with strict correctness requirements. Validated React component patterns against real-world constraints and maintainability standards. Improved typed API examples using consistent DTOs and schema-driven designs. Detected logical inconsistencies in step-by-step reasoning, reducing downstream errors by 30%. Ensured strict adherence to prompts and detailed technical guidelines in AI-generated outputs. Contributed clear, concise explanations suitable for regulated and high-reliability environments. Collaborated using Git workflows to review changes and maintain auditability. Maintained high technical accuracy under tight review timelines.

Junior Frontend Developer (JavaScript / Web3 Developer) at KillerGF

September 1, 2021 - July 1, 2022

Reviewed early-stage TypeScript and JavaScript examples involving Web3 integrations. Corrected unsafe type assertions and improper interface usage to improve type safety. Authored clean reference implementations demonstrating sound object-oriented programming abstractions. Improved clarity of technical explanations for junior and mid-level audiences. Applied standard Git workflows for version control and collaborative reviews. Helped establish baseline quality standards for TypeScript-focused AI training data.