Phoenix IT

Sustainable Software Engineering

Hello, I'm Jacob Grieger
and I offer sustainable software solutions and IT consulting with 12+ years of experience from the Zugspitz region — Sustainable Software Engineering at the highest level

Discover my services

My Services

Sustainable software solutions with over 12 years of experience: From modern web applications to scalable cloud architectures.

Software Development

Efficient and sustainable software solutions that support your business processes and provide measurable value to your company.

Tech Stack:

Go .NET PowerShell Green Software

Distributed Systems

Development of flexible and resilient architectures for applications with high requirements for scalability, availability, and performance.

Methodologies:

SRE DevSecOps GitOps CI/CD Event-driven Architecture

Open-Source Software

Integration of established open-source solutions and active contribution to the open-source ecosystem as one of the maintainers of the Kubernetes distribution K2s.

Open Source Projects:

NATS Kubernetes Keycloak PostgreSQL Linkerd OTel K2s

Cloud Hosting

Design and implementation of cost-effective cloud solutions with particular consideration of data protection and security requirements. Also planning of failover scenarios and development of exit strategies.

Tags:

AWS Azure GCP Terraform/OpenTofu SaaS PaaS IaaS Managed K8s Serverless GDPR/DSGVO

Web Apps

Individual and user-friendly web applications with modern technologies and thoughtful UX design, whether as a statically generated website or interactive app.

Tech Stack:

Astro Sveltekit Tailwind CSS Markdown PWA Web Components HTML5

Desktop Apps

Whether slim command-line tool or user-friendly application with modern user interface.

Operating Systems:

Linux Windows

Containerization

Strategic migration of existing applications into the world of containers.

Technologies:

Docker Docker Compose Podman Buildah Kubernetes OCI

Testing

Development and implementation of an individual testing strategy for your systems.

Methodologies:

Risk-based Testing Behavior-Driven Development Mocking DSL

Consulting

Strategic consulting for software development processes, technical modernization, and successful digital transformations.

Focus Areas:

Lean/Agile Software Development Requirements Engineering Domain-Driven Design Domain Story Telling Event Storming CI/CD Trunk-based Development Clean Code Team Culture

Let's talk

Projects & Clients

From open-source contributions to individual client solutions – an insight into my work.

Open Source Contribution

K2s - Kubernetes Distribution

Open Source Maintainer

Kubernetes distribution specifically developed for healthcare environments. Enables secure containerization of medical device software and clinical applications. As one of the maintainers, I bring enterprise experience into the open-source community.

Kubernetes Go PowerShell Healthcare Enterprise