iSure - Webapp und API Backend
Technologies:
Angular 15, Typescript, NodeJS 18, NestJS, AWS Lambda, Serverless Framework, S3, DynamoDB, mySQL, iOS Swift 5, SwiftUI
Senior Fullstack Developer
Reliable software development services delivering professional-grade applications
My name is Oliver Kießler and I am a freelance fullstack developer from Cologne, Germany. I specialize in web applications (Angular, Ruby on Rails) and API backend solutions (NodeJS, AWS Lambda & Amplify, Serverless Framework, Java).
As an experienced fullstack software developer and IT consultant, I independently take on projects/assignments on a freelance basis or support your company as part of your team. more...
Featured projects
Pares - Integrated finance
Technologies used:
Java 19, Spark, Hibernate, Typescript, Angular 14, AWS Amplify, mySQL
Secure Mobile Payment Platform - App, SDK and API Backend
Technologies:
iOS 10 (Swift 3), Android 7 (Java), Strong encryption, Ruby 2.2 / JRuby, Ruby on Rails 4.2, MySQL 5.7