Marcell Simon

Founded my own SaaS developer tool in my free time. Proxytool is a developer tool to make your team more effective, progressing faster, deploy sooner with less code and errors

Stack: Azure, React My Role: - participating in different teams to help every aspect of the platform - working on web and React Native apps

1plusX is a Machine-learning backed analytics tool for big sites Stack: AWS (Kafka, ECS, RDS), Node.js, Angular My Role: - improving the web frontend in usability and SEO - implementing new features

yamo is a 100% organic babyfood producer with a custom e-commerce site and system Stack: AWS (Lambda, RDS, EC2, S3, CloudFront), Node.js, ReactJS My Role: - introducing the team to proper Scrum - moving the frontend project to TypeScript - improving the web frontend in usability and SEO - rebuilding the backend side in AWS Serverless - supervising contractors' work

Automatized Crypto Market Trader Stack: AWS (Elastic Container Services, Elastic Container Registry, RDS, KMS, CloudWatch), Node.JS, TypeScript, MySQL, ReactJS My part: - Designing the architecture, deciding what technologies to use - Leading the development with the full-stack team - Developing the backend microservices - Trading on the Binance Crypto Market - Building scalable services

Whitelabel solution for restaurants/shops to easily create a web/mobile app Stack: Node.JS, MongoDB, ReactJS webadmin, Barion payments My part: - Designing the architecture - Developing backend API for the mobile apps - Leading the development for the mobile/backend project

Image based feedback solution for Businesses Stack: Node.JS, MongoDB, Java (Android) My Part: - Designing the application - Designing the backend architecture - Implementing the Android application - Implementing the same app on web with ReactJS - Since 2019 I only helped them as an Architect

Health Assistant Application (multiple rounds of funding since then, 6m EUR latest) Stack: Node.JS, TypeScript, MySQL, MongoDB, ReactJS, Redis, Docker My part: - Designing the architecture, deciding what technologies to use - Developing the backend microservices - Building scalable services (including databases) with secure health data storage - Developing custom Load Balancer and monitoring system - Leading the development of the whole platform

Kinsta is a premium WordPress hosting company, offering cloud-based hosting. Stack: Node.JS, ReactJS, ant.design, RethinkDB, GraphQL, Stripe, New Relic, Redis My Role: - implementing a custom invoicing system with Stripe - implementing a custom monitoring tool to healthcheck thousands of hosted sites - implementing new admin dashboard features for users - introducing the team to Scrum

As a Product Owner / Project Manager I was responsible for a team of 8 people, working with banks and telecommunication companies on the Front and backend side.