Jan Florian Dietrich

Fullstack Engineer
E-Mail:...
Social Networks:Xing
Programming:Github
I do:Frontend Application Development, Fullstack Development, Progressive Web Apps / Single Page Applications, UI/UX, Automated Testing.
Clients and Projects:
  • Universal Music / Deutsche Grammophon  (Green-field development of an audio-/vod-/live-streaming platform using Elixir, Phoenix, Ecto, Oban, Next.JS, AWS, Typescript, Node)
  • SIXT Leasing SE  (Relaunch of a car-leasing platform using Angular 9, Angular Universal, Angular Material, Express, Node, Typescript, RxJS, AWS Lambda, Java, Spring, Elasticsearch)
  • WPS Management GmbH/wescale  (Development for a Procurement-Platform using Vue.js, Vuex, Vue Router, Node, K8s, Camunda, Java)
  • Zalando SE  (Fullstack-Development for the Returns-Process with React, Redux, NodeJS, Express, Kotlin, PostgreSQL and Kubernetes)
Technologies:
  • Typescript, JavaScript, Bun, Deno
  • Functional Reactive Programming: ReasonML, Elm, ClojureScript, RxJS
  • GraphQL, Apollo, Relay
  • Next.Js, React, Redux, React-Router, Gatsby
  • NodeJS, Express, Hapi, Fastify
  • Svelte, Sveltekit & Ecosystem
  • Angular
  • Vue, Vuex, Vue-Router
  • Webpack, Rollup, Parcel
  • Elixir, Phoenix, Ecto, Oban, Absinthe
  • Kotlin, Java
  • AWS Lambda, Step Functions & ecosystem
  • Styles: Latest CSS, Tailwind, CSS-in-JS, Styled Components, CSS Modules, BEM, PostCSS, SASS
  • Testing: Playwright, Vitest, Jest, Cypress, Testcafe
  • CMS: Wordpress, Drupal, Ghost, Contentful
  • Solr, Lucene, Elasticsearch
  • Scala/Play Framework
  • PHP, Laravel, Symfony, Python,
Please ask for my profile for detailed information.

Henning Petersen

Software Design & Development
E-Mail:...
Social Networks:LinkedInXing
Programming:GitHubStack Overflow
I do:Full-stack Development with a Backend Focus, Data Engineering, Automated Testing, Cloud Infrastructure & CI/CD.
Clients and Projects:
  • Zalando  (Implementing multi-tenancy in buying systems)
  • Kleinanzeigen  (Retrieval of relevant product ads (first-party PLA) using search and machine learning; Backend development for the Privacy and Data Enablement teams at (eBay) Kleinanzeigen)
  • Deutsche Post IT Services  (Development of a system to assess mass mailings for automated mail processing using computer vision and AI; Migration of a fleet of microservices from private cloud to Azure)
  • DWS / Deutsche Bank  (Backend development for the DWS Investment App, a white-label robo-advisor and institutional investment solutions, including cloud migration to Azure)
Technologies:
  • Languages (Kotlin, Java, Scala, Groovy)
  • Backend & APIs (Spring Boot, Spring MVC, REST, OpenAPI 3.0, microservices)
  • Persistence & Databases (JPA/Hibernate, JDBI, PostgreSQL, MySQL, Oracle, Liquibase, Hazelcast)
  • Messaging & Events (Apache Kafka, Avro, Nakadi, ActiveMQ)
  • Search, Machine Learning & Computer Vision (Elasticsearch, ONNX, OpenCV, Tesseract)
  • Data Platforms & Pipelines (Databricks, dbt, Apache Airflow)
  • Cloud & Containers (AWS, Azure, Docker, Kubernetes/AKS, Helm, Azure Spring Apps, Azure Managed SQL, Key Vault, App Configuration)
  • Testing (JUnit, Kotest, Spock)
  • Development & CI/CD (IntelliJ IDEA, GitHub, GitHub Actions, Maven, Jenkins, TeamCity)
  • Observability (Dash0, Splunk, Grafana)
  • Document Processing (Apache PDFBox, Apache POI, JXLS)
Please ask for my profile for detailed information.