Janus Reith
Lead Developer at Digitalagentur MIA3 GmbH
Greater Bielefeld Area Germany
Summary
👤
Senior🎓
Top SchoolJanus Reith is a Lead Developer with a decade of professional experience building scalable web applications, currently focused on TypeScript and Node.js for e-commerce and B2B platforms. He combines hands-on full-stack delivery with deep DevOps expertise—Docker, Kubernetes, serverless, GitOps and IaC—to deploy performant, maintainable systems. Janus prefers functional, immutable styles over classical OOP and applies that philosophy across front- and back-end architectures to improve reliability and testability. His open-source contributions include backend work on the Reaction Commerce platform and a Next.js storefront, where he implemented Stripe Payments Intents and demeteorized key file-processing workers. Based in the Greater Bielefeld area, he draws on both agency leadership and freelance experience to craft bespoke solutions tailored to product and operational needs. Colleagues describe him as a pragmatic engineer who balances developer ergonomics with production-grade infrastructure.
11 years of coding experience
4 years of employment as a software developer
Informatik, Informatik at Paderborn UniversityGrundschule (2. + 4. Klasse), Grundschule (2. + 4. Klasse) at WeerthschuleGrundschule (1. Klasse), Grundschule (1. Klasse) at FreiligrathschuleAbitur, Abitur at Christian-Dietrich-Grabbe-Gymnasium
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (23)
javascript10
apidoc10
ecommerce10
nextjs10
material-ui10
wpgraphql10
api10
wordpress-graphql10
graphql10
nodejs10
apollo10
react10
stripe-api10
mongodb-database9
payment-integration9
Programming languages (16)
Github contributions (5)
reactioncommerce/example-storefront
Mar 2020 - Jun 2021
Example Storefront is Reaction Commerce’s headless ecommerce storefront - Next.js, GraphQL, React. Built using Apollo Client and the commerce-focused React UI components provided in the Storefront Component Library (reactioncommerce/reaction-component-library). It connects with Reaction backend with the GraphQL API.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:30 reviews, 117 commits, 10 PRs in 1 year 3 months
Contributions summary:Janus primarily focused on front-end development, updating Material UI components and implementing the Stripe payment integration. Their work also included refactoring the codebase to use a new Apollo implementation and updating paths for the new i18n implementation. Additionally, they made several changes to improve performance and remove unused code.
apollo-clientbackendecommercegraphqlgraphql-api
reactioncommerce/reaction
Jul 2019 - Jun 2021
Project has been discontinued ////// Mailchimp Open Commerce is an API-first, headless commerce platform built using Node.js, React, GraphQL. Deployed via Docker and Kubernetes.
Role in this project:Back-end Developer
Back-end DeveloperContributions:8 commits, 3 PRs, 125 comments in 1 year 11 months
Contributions summary:Janus primarily focused on back-end development tasks within the Reaction Commerce platform. Their work involved demeteorizing and refactoring file processing workers related to remote URLs and temporary file storage, adding options for handling new file records. They also implemented a new Stripe Payments Intents API payment plugin, including mutations, authorization, and refund functionalities, which integrated with the existing e-commerce platform. Additionally, they cleaned up existing code, updated documentation, and refactored the sharp syntax for image transformations.
dockergraphqlkubernetesmailchimpnodejs
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.