Marc Stammerjohann
Freelance Software Engineer at notiz-dev
Summary
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RockstarMarc Stammerjohann is a freelance software engineer with a decade of hands-on experience building full-stack applications using Angular, NestJS, Prisma, Tailwind CSS and Capacitor. He contributes to open-source projects, notably improving UX and keyboard accessibility in the Cryptomator desktop client and implementing authentication and Prisma integrations in a NestJS starter template. Comfortable across front-end and back-end domains, he delivers secure, user-focused features—ranging from client-side encryption UX to GraphQL/Prisma data layers and Passport-JWT auth. Clients benefit from his pragmatic approach to developer tooling and templates that accelerate secure, maintainable app delivery. An attention to polish and usability distinguishes his work: small UI improvements and shortcuts that materially improve day-to-day product interactions.
10 years of coding experience
Github Skills (20)
authentication10
javafx10
user-authentication10
wpgraphql10
java10
prisma10
nestjs10
javas10
uid10
front-end-development10
wordpress-graphql10
graphql10
bcrypt10
ui-design9
cryptography9
Programming languages (13)
Github contributions (5)
notiz-dev/nestjs-prisma-starter
Dec 2018 - Jul 2022
Starter template for NestJS 😻 includes GraphQL with Prisma Client, Passport-JWT authentication, Swagger Api and Docker
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 reviews, 393 commits, 72 PRs in 3 years 8 months
Contributions summary:Marc's commits primarily focused on setting up and configuring Prisma within the NestJS project. They integrated Prisma client configurations and connected resolvers to the Prisma client to manage data interaction. Furthermore, the user made significant changes to support user authentication, including user signup, login, and managing password-related functionalities within the authentication system. These changes indicate a strong involvement in back-end development within the context of this NestJS-based project.
bcryptcode-firstnestjsboilerplatedocker
cryptomator/cryptomator
Jul 2017 - Jan 2018
Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:6 commits, 3 pushes, 3 branches in 6 months
Contributions summary:Marc focused on enhancing the user interface and overall user experience of the Cryptomator application. They implemented success messages within the UI after key actions such as vault creation, password changes, and upgrades. They also introduced keyboard shortcuts for easier navigation of vaults and addressed a bug related to adding a trailing slash to the WebDAV URL, enhancing usability and user experience.
cryptographytransparentprivacyclient-sidesecurity
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