Cloud & Backend Engineering | AWS, Kubernetes, Java/Kotlin, Python | AI-accelerated Development
Aktualisiert am 18.05.2026
Profil
Freiberufler / Selbstständiger
Verfügbar ab: 17.05.2026
Verfügbar zu: 100%
davon vor Ort: 100%
AWS
Helm
Java 11
Kotlin
Spring Boot
Python
Terraform
Docker
GCP
Kafka
PostgreSQL
React
Angular
Go
CI/CD
Microservices
Linux
ArgoCD
REST
Machine Learning
Ansible
German
Muttersprache
English
fluent

Einsatzorte

Einsatzorte

Deutschland
nicht möglich

Projekte

Projekte

7 months
2025-11 - now

Self-employed

Creator & Solo Developer Kotlin Multiplatform Rust OpenGL ...
Creator & Solo Developer
  • Building an AI-native Kotlin Multiplatform game engine with data-oriented ECS architecture and compile-time code generation
  • Custom Kotlin K2 compiler plugin generating Structure-of-Arrays storage with SQL-queryable game state
  • LLM-powered AI agents with action libraries, self-narrative, and PL/pgSQL fiber scripts
  • Built kbt, a custom Rust-based build tool replacing Gradle for fast multiplatform compilation
  • GPU-backed AI asset pipeline generating sprites, music, and voices via Stable Diffusion, MusicGen and TTS
  • Koblin Forge: AI-native IDE with live OpenGL viewport, hot-reload, and 30+ MCP tools
Kotlin Multiplatform Rust OpenGL WebAssembly PostgreSQL Kubernetes vLLM Stable Diffusion Keycloak MCP Compose Multiplatform Ktor
on request
1 year 10 months
2024-02 - 2025-11

Self-employed

Technical Cofounder Kotlin Multiplatform Python Go ...
Technical Cofounder
  • Built a multiplatform Augmented Reality wine discovery app from scratch
  • Self-hosted Kubernetes cluster with Ansible/Kubespray and Terraform on hybrid AWS infrastructure
  • Backend services in Spring Boot/Kotlin, Python FastAPI, and Go
  • Automated scraping of 1M+ wine records with custom indexing for ML training pipelines
  • Trained Vision Transformers and textual embeddings for multimodal wine matching via transfer learning
  • Cross-platform AR engine built with Kotlin Multiplatform and OpenGL
Kotlin Multiplatform Python Go C++ OpenGL TensorFlow OpenCV Spring Boot Fast API Kafka Postgres Redis Qudrant AWS Kubernetes Helm Terraform Ansible ArgoCD Github
on request
6 months
2025-03 - 2025-08

Developing an Observability Strategy

Cloud Integration Engineer (Freelance) Postgres (CloudSQL) GCP Go ...
Cloud Integration Engineer (Freelance)
  • Designed observability strategy with custom metric exporters, preventing multiple production incidents through early detection
  • Bidirectional Snowflake synchronization using Spring Boot and Go
  • Modernized secret management with Secret Manager and External Secrets Operator
  • Introduced KEDA-based horizontal autoscaling for cost-efficient resource usage
  • Established ArgoCD for GitOps deployments and streamlined CI/CD processes
Postgres (CloudSQL) GCP Go Kafka BigQuery React Java Kubernetes Helm Terraform Gitlab ArgoCD Keycloak Snowflake Spring Boot Cloud Monitoring
toom Baumarkt GmbH
6 months
2023-07 - 2023-12

Architecture ? Multi-Tenant AI Platform on Kubernetes

Platform Engineer (Freelance) Spring Boot Kubernetes Ansible ...
Platform Engineer (Freelance)
  • Bootstrapped a multi-tenant AI platform on Kubernetes for internal and external data science teams
  • Operated an on-premise Kubernetes cluster in a high-security environment
  • Implemented secure authentication and authorization with Keycloak
  • Ran hands-on workshops with data scientists and stakeholders
Spring Boot Kubernetes Ansible R Posit Flux Helm Nginx Keycloak
Bundesdruckerei GmbH
5 months
2023-01 - 2023-05

Kafka-based CRM System

Cloud Consultant (Freelance) Terraform GCP Kubernetes ...
Cloud Consultant (Freelance)
  • Architected and built a Kafka-based CRM system from the ground up
  • Bootstrapped self-managed Kubernetes infrastructure in GCP
  • Built data pipelines feeding customer insights into CRM analytics and marketing automation
  • Designed microservice architecture integrating multiple SaaS platforms into a single customer data source of truth
  • Established monitoring stack with Prometheus/Grafana and CI pipelines
Terraform GCP Kubernetes Java Kafka/Strimzi Helm Gitlab Prometheus Spring Boot
toom Baumarkt GmbH
1 year 8 months
2020-09 - 2022-04

Cloud Engineering

Cloud Engineer Scala Java Kafka ...
Cloud Engineer
  • Managed company-wide Kafka data infrastructure on AWS
  • Built a platform for livestreaming telecom and payload events to customer organizations
  • Planned and executed zero-downtime migrations between Kafka clusters
  • Created shared Terraform modules, GitHub CI templates, and a custom Kafka CLI adopted across multiple teams
Scala Java Kafka AWS Kubernetes Terraform NodeJS http4s Github MySQL
EMnify
1 year 4 months
2019-05 - 2020-08

Software Engineering

Senior Full Stack Software Engineer Kotlin GraphQL Spring Boot ...
Senior Full Stack Software Engineer
  • Built GraphQL backend powering the mobile apps
  • Introduced Kafka Streams for real-time aggregations and data transformations
  • Designed high-volume user tracking pipelines for analytics and personalization
  • Mentored team members in AWS and Kubernetes
Kotlin GraphQL Spring Boot Kafka Openshift AWS Terraform MongoDB Jenkins Gitlab
idealo internet GmbH
9 months
2018-06 - 2019-02

Software Engineering

Fullstack Software Engineer Kotlin Spring Boot Typescript ...
Fullstack Software Engineer
  • Full-stack development for blockchain industry projects
  • Built Alexa and Google Assistant skills for multiple customers
  • Implemented a Terraform provider for Alexa Skills in Go
Kotlin Spring Boot Typescript NodeJS React AWS GCP Kubernetes Terraform CircleCI Github
techdev Solutions GmbH
1 year 9 months
2016-05 - 2018-01

Development of Android Features

Android Engineer Android Kotlin Java ...
Android Engineer
  • Android feature development for the Oral-B app including Bluetooth integration with smart toothbrushes
  • Built a real-time face augmentation Android app using machine learning and OpenGL
Android Kotlin Java C(++) Dlib LibGdx OpenGL JNI Gitlab
Iconmobile GmbH
1 year 1 month
2014-10 - 2015-10

Software Engineering

Student Software Engineer CSS JavaFX C++ ...
Student Software Engineer
  • Developed a discrete event simulation of toll processes with mathematical modeling
  • Built live visualizations of KPIs and geographical toll data
CSS JavaFX C++ Java
Toll-Collect GmbH
5 months
2013-07 - 2013-11

Java-based planning tool

Student Worker MySQL Java JavaFX
Student Worker
  • Built a Java-based planning tool with mathematical modeling for stock optimization
MySQL Java JavaFX
Siemens Industriegetriebe GmbH

Aus- und Weiterbildung

Aus- und Weiterbildung

2012 ? 2015
Technological Mathematics
TU Berlin

2009 ? 2012
Mathematics
TU München

Position

Position

Freelance Software Engineer

Kompetenzen

Kompetenzen

Top-Skills

AWS Helm Java 11 Kotlin Spring Boot Python Terraform Docker GCP Kafka PostgreSQL React Angular Go CI/CD Microservices Linux ArgoCD REST Machine Learning Ansible

Produkte / Standards / Erfahrungen / Methoden

Profile
AI-accelerated full-stack engineer with deep expertise in cloud, backend and data. High-pace, hands-on mentality with strong architectural skills.

SKILLS
  • Infrastructure & Cloud
    • AWS
    • GCP
    • Kubernetes
    • Terraform
    • Ansible
    • Linux
    • Docker
    • Helm
    • Keycloak
  • Data & Persistence
    • Kafka
    • Postgres
    • Redis
    • Qdrant
    • MongoDB
    • BigQuery
    • Snowflake
    • MySql
    • MQTT
  • AI & Development Tools
    • Claude Code
    • RAG
    • MCP
    • LLM Agents
  • Backend
    • Spring Boot
    • Micronaut
    • Fast API
    • http4s
  • Frontend
    • Kotlin Multiplatform
    • React
    • Flutter
    • Android
    • OpenGL
  • CI/CD & DevOps
    • ArgoCD
    • Flux
    • Jenkins
    • Gitlab
    • Github
    • Scrum/Kanban
  • Monitoring & Alerting
    • Prometheus
    • Grafana
    • Cloud Monitoring
  • Machine Learning & AI
    • TensorFlow/Keras
    • Vision Transformers
    • Embeddings/Vector
    • Search
    • vLLM
    • Stable Diffusion
    • ?TTS/Audio Generation

Programmiersprachen

  • Kotlin
  • Java
  • Scala
  • Python
  • Rust
  • Typescript
  • Go
  • C(++)
  • Bash

Einsatzorte

Einsatzorte

Deutschland
nicht möglich

Projekte

Projekte

7 months
2025-11 - now

Self-employed

Creator & Solo Developer Kotlin Multiplatform Rust OpenGL ...
Creator & Solo Developer
  • Building an AI-native Kotlin Multiplatform game engine with data-oriented ECS architecture and compile-time code generation
  • Custom Kotlin K2 compiler plugin generating Structure-of-Arrays storage with SQL-queryable game state
  • LLM-powered AI agents with action libraries, self-narrative, and PL/pgSQL fiber scripts
  • Built kbt, a custom Rust-based build tool replacing Gradle for fast multiplatform compilation
  • GPU-backed AI asset pipeline generating sprites, music, and voices via Stable Diffusion, MusicGen and TTS
  • Koblin Forge: AI-native IDE with live OpenGL viewport, hot-reload, and 30+ MCP tools
Kotlin Multiplatform Rust OpenGL WebAssembly PostgreSQL Kubernetes vLLM Stable Diffusion Keycloak MCP Compose Multiplatform Ktor
on request
1 year 10 months
2024-02 - 2025-11

Self-employed

Technical Cofounder Kotlin Multiplatform Python Go ...
Technical Cofounder
  • Built a multiplatform Augmented Reality wine discovery app from scratch
  • Self-hosted Kubernetes cluster with Ansible/Kubespray and Terraform on hybrid AWS infrastructure
  • Backend services in Spring Boot/Kotlin, Python FastAPI, and Go
  • Automated scraping of 1M+ wine records with custom indexing for ML training pipelines
  • Trained Vision Transformers and textual embeddings for multimodal wine matching via transfer learning
  • Cross-platform AR engine built with Kotlin Multiplatform and OpenGL
Kotlin Multiplatform Python Go C++ OpenGL TensorFlow OpenCV Spring Boot Fast API Kafka Postgres Redis Qudrant AWS Kubernetes Helm Terraform Ansible ArgoCD Github
on request
6 months
2025-03 - 2025-08

Developing an Observability Strategy

Cloud Integration Engineer (Freelance) Postgres (CloudSQL) GCP Go ...
Cloud Integration Engineer (Freelance)
  • Designed observability strategy with custom metric exporters, preventing multiple production incidents through early detection
  • Bidirectional Snowflake synchronization using Spring Boot and Go
  • Modernized secret management with Secret Manager and External Secrets Operator
  • Introduced KEDA-based horizontal autoscaling for cost-efficient resource usage
  • Established ArgoCD for GitOps deployments and streamlined CI/CD processes
Postgres (CloudSQL) GCP Go Kafka BigQuery React Java Kubernetes Helm Terraform Gitlab ArgoCD Keycloak Snowflake Spring Boot Cloud Monitoring
toom Baumarkt GmbH
6 months
2023-07 - 2023-12

Architecture ? Multi-Tenant AI Platform on Kubernetes

Platform Engineer (Freelance) Spring Boot Kubernetes Ansible ...
Platform Engineer (Freelance)
  • Bootstrapped a multi-tenant AI platform on Kubernetes for internal and external data science teams
  • Operated an on-premise Kubernetes cluster in a high-security environment
  • Implemented secure authentication and authorization with Keycloak
  • Ran hands-on workshops with data scientists and stakeholders
Spring Boot Kubernetes Ansible R Posit Flux Helm Nginx Keycloak
Bundesdruckerei GmbH
5 months
2023-01 - 2023-05

Kafka-based CRM System

Cloud Consultant (Freelance) Terraform GCP Kubernetes ...
Cloud Consultant (Freelance)
  • Architected and built a Kafka-based CRM system from the ground up
  • Bootstrapped self-managed Kubernetes infrastructure in GCP
  • Built data pipelines feeding customer insights into CRM analytics and marketing automation
  • Designed microservice architecture integrating multiple SaaS platforms into a single customer data source of truth
  • Established monitoring stack with Prometheus/Grafana and CI pipelines
Terraform GCP Kubernetes Java Kafka/Strimzi Helm Gitlab Prometheus Spring Boot
toom Baumarkt GmbH
1 year 8 months
2020-09 - 2022-04

Cloud Engineering

Cloud Engineer Scala Java Kafka ...
Cloud Engineer
  • Managed company-wide Kafka data infrastructure on AWS
  • Built a platform for livestreaming telecom and payload events to customer organizations
  • Planned and executed zero-downtime migrations between Kafka clusters
  • Created shared Terraform modules, GitHub CI templates, and a custom Kafka CLI adopted across multiple teams
Scala Java Kafka AWS Kubernetes Terraform NodeJS http4s Github MySQL
EMnify
1 year 4 months
2019-05 - 2020-08

Software Engineering

Senior Full Stack Software Engineer Kotlin GraphQL Spring Boot ...
Senior Full Stack Software Engineer
  • Built GraphQL backend powering the mobile apps
  • Introduced Kafka Streams for real-time aggregations and data transformations
  • Designed high-volume user tracking pipelines for analytics and personalization
  • Mentored team members in AWS and Kubernetes
Kotlin GraphQL Spring Boot Kafka Openshift AWS Terraform MongoDB Jenkins Gitlab
idealo internet GmbH
9 months
2018-06 - 2019-02

Software Engineering

Fullstack Software Engineer Kotlin Spring Boot Typescript ...
Fullstack Software Engineer
  • Full-stack development for blockchain industry projects
  • Built Alexa and Google Assistant skills for multiple customers
  • Implemented a Terraform provider for Alexa Skills in Go
Kotlin Spring Boot Typescript NodeJS React AWS GCP Kubernetes Terraform CircleCI Github
techdev Solutions GmbH
1 year 9 months
2016-05 - 2018-01

Development of Android Features

Android Engineer Android Kotlin Java ...
Android Engineer
  • Android feature development for the Oral-B app including Bluetooth integration with smart toothbrushes
  • Built a real-time face augmentation Android app using machine learning and OpenGL
Android Kotlin Java C(++) Dlib LibGdx OpenGL JNI Gitlab
Iconmobile GmbH
1 year 1 month
2014-10 - 2015-10

Software Engineering

Student Software Engineer CSS JavaFX C++ ...
Student Software Engineer
  • Developed a discrete event simulation of toll processes with mathematical modeling
  • Built live visualizations of KPIs and geographical toll data
CSS JavaFX C++ Java
Toll-Collect GmbH
5 months
2013-07 - 2013-11

Java-based planning tool

Student Worker MySQL Java JavaFX
Student Worker
  • Built a Java-based planning tool with mathematical modeling for stock optimization
MySQL Java JavaFX
Siemens Industriegetriebe GmbH

Aus- und Weiterbildung

Aus- und Weiterbildung

2012 ? 2015
Technological Mathematics
TU Berlin

2009 ? 2012
Mathematics
TU München

Position

Position

Freelance Software Engineer

Kompetenzen

Kompetenzen

Top-Skills

AWS Helm Java 11 Kotlin Spring Boot Python Terraform Docker GCP Kafka PostgreSQL React Angular Go CI/CD Microservices Linux ArgoCD REST Machine Learning Ansible

Produkte / Standards / Erfahrungen / Methoden

Profile
AI-accelerated full-stack engineer with deep expertise in cloud, backend and data. High-pace, hands-on mentality with strong architectural skills.

SKILLS
  • Infrastructure & Cloud
    • AWS
    • GCP
    • Kubernetes
    • Terraform
    • Ansible
    • Linux
    • Docker
    • Helm
    • Keycloak
  • Data & Persistence
    • Kafka
    • Postgres
    • Redis
    • Qdrant
    • MongoDB
    • BigQuery
    • Snowflake
    • MySql
    • MQTT
  • AI & Development Tools
    • Claude Code
    • RAG
    • MCP
    • LLM Agents
  • Backend
    • Spring Boot
    • Micronaut
    • Fast API
    • http4s
  • Frontend
    • Kotlin Multiplatform
    • React
    • Flutter
    • Android
    • OpenGL
  • CI/CD & DevOps
    • ArgoCD
    • Flux
    • Jenkins
    • Gitlab
    • Github
    • Scrum/Kanban
  • Monitoring & Alerting
    • Prometheus
    • Grafana
    • Cloud Monitoring
  • Machine Learning & AI
    • TensorFlow/Keras
    • Vision Transformers
    • Embeddings/Vector
    • Search
    • vLLM
    • Stable Diffusion
    • ?TTS/Audio Generation

Programmiersprachen

  • Kotlin
  • Java
  • Scala
  • Python
  • Rust
  • Typescript
  • Go
  • C(++)
  • Bash

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

Fragen?

Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

Das Freelancer-Portal

Direktester geht's nicht! Ganz einfach Freelancer finden und direkt Kontakt aufnehmen.