Consultant Profile

Felix Faust

Freelance Senior Fullstack & Platform Engineer

TypeScript, React, Node.js, Kubernetes, OpenShift, GitOps

contact@turtledev.net+49 151 15146363turtledev.net
Freiherr-vom-Stein-Strasse 44, 51545 Waldbröl
Availability: Flexible / by agreement
Engagement: Freelance / B2B / Contract
Remote: EU/DACH, occasional on-site
Languages: German native, English fluent
Felix Faust

Profile

  • Freelance Senior Fullstack & Platform Engineer with 8+ years of experience building TypeScript products, APIs, and production-grade cloud/platform delivery systems.
  • I help teams ship React, Next.js, and Node.js applications while improving the CI/CD, Kubernetes/OpenShift, observability, and operational foundations behind them.
  • Recent mandates include GCP/GKE e-commerce migration, regulated OpenShift modernization, ALDI deals frontend delivery, and private Kubernetes platform transformation.
  • Typical outcomes: safer production rollouts, clearer deployment ownership, reduced platform risk, better observability, and handover-ready systems.

Core Services

  • Fullstack product delivery with TypeScript, React, and Next.js.
  • Backend and API engineering with Node.js, OpenAPI, auth, and integrations.
  • Kubernetes and OpenShift platform stabilization.
  • Cloud migrations, CI/CD, GitOps, and deployment automation.
  • Observability, incident readiness, architecture reviews, and delivery rescue.

Technology Stack

Fullstack & Backend: TypeScript, React, Next.js, Node.js, NestJS, OpenAPI, Zod, Prisma, PostgreSQL
Platform & Cloud: Kubernetes, OpenShift, GKE, Azure Kubernetes, AWS, GCP, Terraform, Helm, Docker
Delivery & Operations: Argo CD, GitLab CI/CD, Azure DevOps, GitHub Actions, Jenkins, Prometheus, Grafana, Alertmanager, New Relic, Cloudflare
Data & Messaging: Cloud SQL, RabbitMQ, Elasticsearch, OpenSearch, Neo4j, Kafka, Redis, Pub/Sub
Older / Additional: Go, Python, Java, C#, Angular, AWS CDK, Ansible, Tekton

Selected Project Highlights

  • GCP/GKE migration of a Magento e-commerce platform from on-premises hosting to cloud-native deployment.
  • OpenShift modernization for a regulated enterprise platform with GitOps and Azure DevOps hardening.
  • Greenfield ALDI deals frontend delivery with React, Next.js, OpenAPI, Docker, and Azure Kubernetes.
  • Private Kubernetes platform transformation from proprietary OpenStack to Hetzner bare metal with Terraform, Argo CD, and Cloudflare automation.

Project Experience

Mandates with platform, cloud, and delivery responsibility

Retail / E-Commerce

Freelance Senior Platform Engineer

Remote enterprise e-commerce migration project

04/2026 - Present

Cloud migration of a production e-commerce platform from on-premises hosting to GCP/GKE, including application containerization, deployment pipeline, observability, and cutover preparation.

  • Owned the migration mostly solo, replacing legacy hosting and external provider dependencies with a reproducible GKE deployment path.
  • Containerized Magento and supporting services and prepared Kubernetes deployments with Docker and Kustomize.
  • Integrated Cloud SQL, RabbitMQ, Elasticsearch, imgproxy, Varnish, NGINX, Cloudflare, and Terraform-managed WAF configuration.
  • Implemented New Relic and Prometheus-based monitoring to make the cutover observable and operationally controllable.
  • Prepared k6 load tests, database migration, and complete production cutover for a production-critical e-commerce system.

GCP, GKE, Kubernetes, Docker, Kustomize, Magento, Cloud SQL, RabbitMQ, Elasticsearch, Cloudflare, Terraform, Prometheus

Energy Technology

Freelance Fullstack & Platform Engineer

International enterprise customer project

02/2025 - Present

Stabilization and modernization of a regulated enterprise platform landscape with a focus on OpenShift compatibility, delivery reliability, and reduced production risk.

  • Owned platform stabilization and modernization in a compliance-sensitive enterprise setup with production-risk constraints.
  • Led legacy application migration to OpenShift and resolved workload compatibility issues across container images, security contexts, and deployment configuration.
  • Hardened Azure DevOps pipelines and Dockerfiles for OpenShift-compatible delivery.
  • Designed Argo CD-based GitOps workflows and Helm chart setup for safer, repeatable production rollouts.
  • Implemented SSO in TypeScript API and frontend services with Entra ID, and improved monorepo workflows with Turborepo.

OpenShift, Kubernetes, Argo CD, GitOps, Azure DevOps, Docker, Helm, TypeScript, Entra ID, Neo4j

Retail / E-Commerce

Freelance Senior TypeScript / Frontend Engineer

Amplicade GmbH, ALDI deals customer project

03/2024 - 09/2024

Delivery of the ALDI deals frontend as a production-ready greenfield application and setup of reliable deployment and handover processes.

  • Built the ALDI deals frontend from scratch with React, Next.js, and TypeScript for a production launch.
  • Integrated third-party APIs via OpenAPI Generator and connected the frontend to existing and newly developed backend services.
  • Containerized the application and deployed it to Azure Kubernetes with Helm-based delivery.
  • Prepared and executed production deployment together with product and backend stakeholders.
  • Onboarded new team members and handled structured handover to the Product Owner.

React, TypeScript, Next.js, Azure Kubernetes, Helm, OpenAPI Generator, Docker

E-Commerce

Senior DevOps Engineer

Schäfer Shop GmbH, internal platform program

09/2022 - 12/2025

Steering a high-risk platform transformation from proprietary OpenStack to a private Kubernetes foundation.

  • Worked on migration from proprietary OpenStack to self-managed Kubernetes and built a private platform foundation on Hetzner bare metal.
  • Implemented infrastructure as code, GitOps, and reusable platform building blocks for handover-ready operations.
  • Automated migration of hundreds of domains to Cloudflare.
  • Developed and maintained GitLab CI pipelines.
  • Expanded the observability stack with Grafana, Prometheus, Alertmanager, Coroot, and incident.io.

Kubernetes, Argo CD, Terraform, OpenStack, Hetzner Bare Metal, S3, Ansible, Prometheus, Grafana, GitLab CI/CD, Cloudflare, Keycloak

SaaS / Networking Platform

DevOps Engineer

AVACO GmbH, product and migration delivery

06/2021 - 08/2022

Migration from Kubernetes to OpenShift and from Jenkins to Tekton pipelines with a focus on automation and cross-team delivery.

  • Played a key role in migrating Kubernetes to OpenShift on Open Telekom Cloud.
  • Containerized applications and automated infrastructure processes.
  • Implemented infrastructure-as-code workflows with Terraform and Ansible.
  • Developed and maintained CI/CD pipelines.
  • Implemented monitoring and logging solutions.

C#, Kubernetes, OpenShift, Terraform, Ansible, CI/CD, Tekton

IT Services

DevOps Engineer

dynabase Technologies GmbH, multi-customer delivery

03/2019 - 05/2021

End-to-end technical responsibility in customer projects by combining software engineering and platform operations.

  • Delivered TypeScript frontend software for projects such as IGUS Configurator and rbtx.com.
  • Built a solo full-stack solution for Netbid across frontend, backend, deployment, and operations.
  • Implemented backend services with Node.js and integrated customer-specific workflows.
  • Deployed and operated infrastructure on AWS and Azure Kubernetes.
  • Managed AWS EKS clusters with AWS CDK.

TypeScript, Angular, RxJS, Node.js, Kubernetes, AWS, AWS EKS, AWS CDK, Azure, Docker, GitLab CI/CD

B2B E-Commerce

DevOps Engineer

powwow GmbH, cloud migration and backend services

07/2018 - 02/2019

Migration of legacy applications to Google Cloud and setup of a reliable service landscape.

  • Led migration of legacy applications to Google Cloud.
  • Set up and operated Kafka clusters, VPN, firewall, and IAM.
  • Worked with GKE, Cloud Run, Cloud Storage, VPC, IAM, Cloud SQL, and Pub/Sub.
  • Used Artifact Registry and Stackdriver.
  • Developed and maintained B2B Java services.

Java, Gradle, Spring Boot, GCP, GKE, Cloud Run, Cloud SQL, Pub/Sub, Stackdriver, Terraform, Kafka

Real Estate / CRM

IT Specialist Apprenticeship

FLOWFACT GmbH, vocational training

07/2015 - 06/2018

Building solid software engineering foundations in agile product development.

  • Worked in agile software delivery with Scrum and Kanban.
  • Developed features in Java monolith systems.
  • Worked on newer customer software versions with React and JavaScript.
  • Gained early experience with AWS and infrastructure topics in a microservice context.

Java, C#, JavaScript, React, PHP, AWS, WordPress Customizer