Heri S.

Senior Product Engineer | Expert in Frontend Systems, Web Performance

I help businesses transform complex designs into high-performance digital products. Specializing in modern headless architectures, performance engineering, and AI automation, I bridge the gap between sophisticated UI/UX and scalable backend/frontend logic. Core Expertise & Latest Stack: Modern Frontend: React, Next.js, TypeScript, Tailwind CSS, VueJS, React Native, Hyperformula. AI, Automation & DevOps: n8n, Slack/ChatOps, Git CI/CD (Bitbucket, GitLab, GitHub), GPT-4 API integration, NodeJS, AWS Lambda. Performance: UI latency reduction, code refactoring, and optimizing build processes (e.g., Babel to ESBuild). eCommerce & CMS: Headless CMS (Sanity, Storyblok), WooCommerce (WP Engine specialist), Shopify, Magento. Case Studies: NEW: AI-Powered ChatOps Pipeline: Architected an automated pipeline connecting Slack to n8n to CI/CD (Bitbucket, GitLab, GitHub), allowing AI to automatically analyze UI issues/PDFs uploaded via chat and trigger automated hotfix workflows. NEW: High-Performance eCommerce Deployment: Architected a scalable WooCommerce solution on WP Engine, leveraging managed caching and automated deployment pipelines for high-traffic stability. AI & Automation: Developed GPT-4 function call wrapper to easily communicate with OpenAPI Specifications. Serverless Architecture: Deployed NextJS based APIs using AWS Lambda. Legacy Modernization: Complete rewrites of web applications from Javascript to Typescript. AI Widgets: Developed Chat UI widget integrated with AI, using NodeJS and Serverless Engine. Low-Code Innovation: Developed Strapi plugins to create a low-code app builder. Performance Engineering: Sped up build processes from 1 hour (using Babel) to less than 5 minutes (using ESBuild). MVP Development: Turned Webflow/Figma designs into interactive MVPs, digital reports, or functional prototypes. Enterprise Contribution: Contributed to a full stack web/desktop/mobile application (Expensify). UI Revamp: Modernized web apps with various UI libraries (Material UI, Tailwind, Styled Components). Apps I Have Developed: - AI-driven automation workflows & ChatOps tools - Interactive digital platforms & content-heavy reporting dashboards - Low-code applications & app builders - High-conversion e-commerce platforms - Accounting & business management systems - Real-time multiplayer web-based games I have worked in the field for over a decade, launching my web development services on Upwork back when it was oDesk. Since then, I have evolved with the industry, moving from the jQuery era to today’s fast-changing ecosystem of React, Next.js, and AI automation. This deep history gives me a unique advantage in engineering, ensuring I can handle both cutting-edge headless builds and complex legacy infrastructure migrations. How can I help you today? Let’s talk.