I'm Kay, a developer, blogger, teacher, and author from Stuttgart, Germany. My preferred pronouns are he/him.

I create content about software development. Web, APIs, mobile, cloud, serverless, monitoring, you name it!

My services include the creation of blog articles, books, documentation, and more. I'm even willing to develop actual software for you if you have an interesting project to offer.

I have more than 15 years experience as a developer and written over 300 articles on various topics. My blog has over 10,000 followers and beyond 500,000 views.

I worked with companies all over the world. Including:

Fauna Logo
Serverless Database
IOD Logo
Content Agency
LogRocket Logo
Browser Monitoring
Logo Merz Akademie
Merz Academy
Design University
Moesif Logo
API Analytics
Newline Logo
Packt Logo
Thundra Logo
Serverless Monitoring
Dashbird Logo
Serverless Monitoring
Upstash Logo
Serverless Database
Developer DAO Logo
Developer DAO
Crypto Education

My Book

I wrote a book about learning React with basic JavaScript knowledge.

React From Zero book


Ofir Nachmani, CEO at IamOnDemand:

We've been collaborating with Kay since early 2020. During this time, he has written dozens of articles for us on a wide variety of tech topics. His technical expertise always shines through--he's even helped our clients debug their products along the way! He is communicative, deadline-driven, flexible, and extremely pleasant to work with--a true techie, writer, and a great guy.

An Editor:

Your writing is amazing, particularly for someone whose first language is (I assume) German. When I see that a job assigned to me was written by you, I always breathe a huge sigh of relief! [...] You are extremely meticulous about the small things that an editor needs to pay attention to [...] I almost thought you might be a native English speaker because your writing is so good and so colloquial.

Content Samples

✒️ REST API Design Best Practices for Parameter & Query String Usage

✒️ REST API Design Best Practices for Sub and Nested Resources

✒️ API Best Practices for Feature Deprecation

✒️ Creating Offline Web Apps with AWS Amplify DataStore

✒️ Serverless Authentication with AWS Amplify

✒️ Await Your Loops

🎥 Serverless Debugging with AWS SAM and VSCode

🎙️ Using & Teaching React

🎙️ My JavaScript Story


Distinguished Author

Distinguished Author

Star of the Week on the Off-By-None Newsletter

There is a very long list of people who are doing #ServerlessGood and contributing to the Serverless community. These people deserve recognition for their efforts. So each week, I will mention someone whose recent contribution really stood out to me. [...]

This week’s star is Kay Plößer [...] thank you for your prolific work in sharing, teaching, and developing serverless! 🙌


Technical Writing

C2 English Language Proficiency

DZone Core Member

Pluralsight JavaScript Expert (IQ 232)

Expired Certificates

AWS Solution Architect Associate (expired 2021)

AWS Developer Associate (expired 2021)

Social Media

📝 blog

🐦 Twitter account

🐙 GitHub profile

StackOverflow developer story

👔 LinkedIn profile