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Experienced Full-Stack Engineer with 9+ years of experience designing and delivering scalable, high-performance web platforms across publishing, e-commerce, IoT, and travel-tech domains. Skilled in architecting microservice-based and modular monolith systems using Next.js, Node.js, Nest.js, Spring Boot, and AWS / GCP cloud infrastructure. Adept at building rich, performant frontends with React, Next.js, and TypeScript, and integrating AI-powered features using LangChain and OpenAI API. Strong background in distributed systems, async task orchestration, and CI/CD automation. Passionate about creating maintainable codebases, mentoring teams, and shaping robust product architectures that bridge elegant UX with reliable backend engineering.…Experienced Full-Stack Engineer with 9+ years of experience designing and delivering scalable, high-performance web platforms across publishing, e-commerce, IoT, and travel-tech domains. Skilled in architecting microservice-based and modular monolith systems using Next.js, Node.js, Nest.js, Spring Boot, and AWS / GCP cloud infrastructure. Adept at building rich, performant frontends with React, Next.js, and TypeScript, and integrating AI-powered features using LangChain and OpenAI API. Strong background in distributed systems, async task orchestration, and CI/CD automation. Passionate about creating maintainable codebases, mentoring teams, and shaping robust product architectures that bridge elegant UX with reliable backend engineering.

Alex Jin

Full Stack Developer, Front-End Developer, Back-End Developer, +3

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Experienced Full-Stack Engineer with 9+ years of experience designing and delivering scalable, high-performance web platforms across publishing, e-commerce, IoT, and travel-tech domains. Skilled in architecting microservice-based and modular monolith systems using Next.js, Node.js, Nest.js, Spring Boot, and AWS / GCP cloud infrastructure. Adept at building rich, performant frontends with React, Next.js, and TypeScript, and integrating AI-powered features using LangChain and OpenAI API. Strong background in distributed systems, async task orchestration, and CI/CD automation. Passionate about creating maintainable codebases, mentoring teams, and shaping robust product architectures that bridge elegant UX with reliable backend engineering.…Experienced Full-Stack Engineer with 9+ years of experience designing and delivering scalable, high-performance web platforms across publishing, e-commerce, IoT, and travel-tech domains. Skilled in architecting microservice-based and modular monolith systems using Next.js, Node.js, Nest.js, Spring Boot, and AWS / GCP cloud infrastructure. Adept at building rich, performant frontends with React, Next.js, and TypeScript, and integrating AI-powered features using LangChain and OpenAI API. Strong background in distributed systems, async task orchestration, and CI/CD automation. Passionate about creating maintainable codebases, mentoring teams, and shaping robust product architectures that bridge elegant UX with reliable backend engineering.

Available to hire

Experienced Full-Stack Engineer with 9+ years of experience designing and delivering scalable, high-performance web platforms across publishing, e-commerce, IoT, and travel-tech domains.
Skilled in architecting microservice-based and modular monolith systems using Next.js, Node.js, Nest.js, Spring Boot, and AWS / GCP cloud infrastructure. Adept at building rich, performant frontends with React, Next.js, and TypeScript, and integrating AI-powered features using LangChain and OpenAI API.
Strong background in distributed systems, async task orchestration, and CI/CD automation. Passionate about creating maintainable codebases, mentoring teams, and shaping robust product architectures that bridge elegant UX with reliable backend engineering.

Skills

Work Experience

Full Stack Engineer at Publi LLC

August 1, 2022 - November 25, 2025

Designed and implemented a microservice-based publishing architecture using Nest.js on Google Cloud Run, integrating TypeORM, PostgreSQL, and Upstash Redis/QStash for scalable content delivery and background job orchestration. Built an AI-powered editorial experience with LangChain and OpenAI API for auto-summarization, SEO tag generation, and writing assistance within the editor. Developed a Slate.js-based WYSIWYG content editor in Next.js/React/TypeScript with drag-and-drop blocks, embedded media, and collaborative editing with real-time state persistence. Implemented NextAuth-based authentication with multi-tenant access control, supporting team workspaces, domain-restricted publications, and OAuth providers. Leveraged Upstash QStash and Google Cloud Tasks for distributed task scheduling, ensuring reliable delivery of async jobs like AI processing, content indexing, and webhook notifications. Deployed and optimized the platform on Vercel and GCP Cloud Run, achieving high performance

Open-Source Contributor at TinaCMS

December 31, 2023 - December 31, 2023

Collaborated with the TinaCMS core team to maintain TinaCMS, an open-source Git-backed headless CMS with 12K+ GitHub stars. Implemented new features and integrations, authored technical documentation, and resolved community-reported issues to improve stability and developer experience. Assisted with customer onboarding and technical migration from Forestry to TinaCMS, including enterprise clients.

Full Stack Engineer at GonnaOrder B.V.

August 1, 2022 - August 1, 2022

Architected a modular monolith in Spring Boot powering a multi-tenant online ordering and order-management platform adopted by 600+ merchants across 15+ European countries. Designed REST APIs and a PostgreSQL data layer with tenant-based isolation and auditing, hosted on AWS Elastic Beanstalk with blue/green deployments and automated CI/CD using GitHub Actions, reducing release time by ~60%. Developed and maintained web, mobile, and desktop apps for merchants using Angular 8+, Ionic, and Electron, implementing WebSocket-based real-time communication to instantly deliver new order alerts and trigger automatic receipt printing on connected devices. Implemented asynchronous, event-driven communication between internal modules using Amazon SNS and SQS, improving reliability of background tasks such as order notifications and third-party integrations, and increasing system resilience under load. Managed Secrets Manager and CloudFormation for secure, reproducible infrastructure; leveraged Cl

Senior Frontend Engineer at Home Tech Innovation, Inc.

April 1, 2020 - April 1, 2020

Led the development of Suvie’s marketing and meal-planner apps (Next.js PWA) serving 10K+ daily active users, driving $1.5M+ in annual recurring revenue growth through subscription-based meal services. Optimized SEO, performance, and WCAG 2.1 accessibility, increasing organic traffic by 30% and reducing page load time by 25% through Core Web Vitals enhancements. Collaborated with design and marketing on A/B testing of tailored brochure versions for specific user segments, delivering a ~20% increase in conversion rate and user retention. Spearheaded the mobile app using React Native, Expo, and AWS IoT SDK for real-time smart-oven management. Partnered with backend engineers using Rails, Solidus, and Hasura to design scalable data models and GraphQL APIs, reducing API development time by ~60% and cutting latency by ~30%. Established automated code-quality checks using ESLint, Prettier, and GitHub Actions, and mentored two frontend engineers on these workflows and best practices in code

Frontend Engineer at Sweet Inn

March 1, 2018 - March 1, 2018

Rebuilt Sweet Inn’s booking platform to support its hybrid 'apartment + hotel' model, adding modules for personalized stay customization, contactless check-in via smart locks, integrated customer-service chat, and dynamic pricing, boosting bookings by 22%. Designed and implemented a modular, responsive UI system using React, Next.js, and Styled Components, ensuring cross-device consistency across 5+ international markets. Integrated Apollo GraphQL and Redux to deliver real-time property and pricing data for 1,000+ listings, improving responsiveness and data integrity between client and backend services. Enhanced performance with route-level code-splitting, image lazy-loading, and caching, reducing page-load time by 35% and improving Lighthouse SEO scores. Practiced full Test-Driven Development (TDD) using Jest, Mocha, Enzyme, and Cypress, achieving comprehensive coverage across unit, integration, and end-to-end testing flows; mentored junior frontend engineers on these workflows.