https://goodlisten.co/, I've been a founder, full-stack engineer at GoodListen, an ai driven audio comprehension platform that helps creators and listeners by generating searchable clips by automating Clips, Highlights processing for Podcasters, YouTubers, and breaking down long audio, video content- Tools and techniques used: Next.js, React.js, Server Side Rendering, Micro Services, Cloud Functions, CI/CD, End to End Test, Playwright Node.js, Terraform, AWS(EC2+ECS, S3, RDS+Redshift, CloudWatch, Load Balancing+Auto-scaling), Google Cloud Platform, Postgres, Python, Sentry, Vector Search, Web Scraping, SEO, Docker, Machine Learning frameworks- Role in the project: Built B2B, B2C AI pipeline, full stack application. As a CEO, I've managed senior AI engineers, full stack developers, designers, sales.- Size of the project (team): Team of 7- Responsibility: Founder, CEO, Techlead(Principal Full-stack Engineer)- Results achieved: Acquired some of the most popular podcasters, media companies as clients, potentially impacting content discovery experience of millions of creators and listeners.

sunmoon.co is a Supabase Expert Partner, building apps for startups utillising standard tech stacks such as #React.js #Node.js #Next.js #Python #PostgreSQL #Supabase, machine learning cloud implementations.Customers include Infiuss.com (YC healthcare startup), goodlisten.co(Podcast Editor SaaS), Spotify, Klarna.Sunmoon is an full stack application development (web, mobile) agency with a team of senior software engineers and PhDs from Spotify, Semrush, Neo4j headquartered in Amsterdam, Netherlands with specialties in AI, NLP, Audio.

- Description of the project(s): Develop new features, fix, maintain, improve external and internal Klarna Service Center Portal Software.- Tools and techniques used: Vanilla JavaScript, React.js, TypeScript, CI/CD, End to End Test, Node.js, Google Cloud Platform, DataDog, Jenkins, Sentry, Docker, - Role in the project: Develop, fix, maintain, improve code, make business, team decisions- Size of the project (team): Direct team of 10, team of 100+ Klarna Payments Unit, collaborated with 1000+ people at Klarna.- Responsibility: Senior Full stack Engineer Consultant(Full Stack)- Results achieved: Impacting 150 million Klarna users and merchants and internal employees with better experience

"Hire the Top 3% of Freelance Talent" https://www.toptal.com/resume/seunghun-lee seunghun.lee@toptal.com

- Description of the project(s): Develop, maintain, integrate 40+ internal Spotify softwares mainly regarding user, payment, customer service- Tools and techniques used: Next.js, React.js, TypeScript, Server Side Rendering, Micro Services, Cloud Functions, CI/CD, End to End Test, Node.js, Google Cloud Platform, Postgres, Python, Sentry, Docker, Kubernetes- Role in the project: Develop, fix, maintain, improve code, make business, team decisions- Size of the project (team): Direct team of 16, team of 100+ Spotify Freemium Unit, collaborated with 1000+ people at Spotify.- Responsibility: Senior Software Engineer Consultant(Full Stack)- Results achieved: Impacting 210 million Spotify users and internal employees with better experience

- Description of the project(s): Develop, fix, maintain, improve external and internal Klarna SDK library, checkout experience, Klarna Payments API in JavaScript. Develop the Klarna SDK (vanilla Javascript) for merchant to integrate the Klarna Playments Develop Klarna One Widget (React + Typescript) Focus on testing and pipeline (building and deploy)- Tools and techniques used: Vanilla JavaScript, React.js, TypeScript, CI/CD, End to End Test, Node.js, Google Cloud Platform, DataDog, Splunk, Jenkins, Sentry, Docker, - Role in the project: Develop, fix, maintain, improve code, make business, team decisions- Size of the project (team): Direct team of 10, team of 100+ Klarna Payments Unit, collaborated with 1000+ people at Klarna.- Responsibility: Senior Software Engineer Consultant(Full Stack)- Results achieved: Impacting 150 million Klarna users and merchants and internal employees with better experience

Development of trading, social networking platforms with Kubernetes, Elasticsearch, PubSub, Docker, Terraform, Redis, RabbitMQ, Istio, Ingress, Python, Django, Java Spring Boot, Node.js, Google Cloud platform(GCP), Amazon Web Services(AWS), React, Postgres

I've developed React apps, Node backend for the logistics company. That includes* tracking client that users use to track deliveries, change delivery location, time.* Node Backend server, PostgresSQL, continuous integration* internal application to manage internationalization, translations for international operations.* static pages with animations.* libraries to manage translations, frontend.* rewrote old JavaScript, Angular code to react

phase.yonsei.ac.kr I did entire project by myself starting from design, architecture, frontend, backend, running server on google cloud platform, SEO, Google Analytics dashboard, hosting, optimization. Used server side rendered React, Node.js, Firebase to create role,component based authorization, realtime datbase CMS applicatoin, SEO for university laboratory database management system integrated with dashboard, frontend. Component, role based authorization concept is a feaure that I couldn't find in existing CMS market

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