Flexible IT service provider for development & infrastructure
I support companies as a flexible IT service provider focused on software development, system administration and technical consulting. Whether it's building applications, setting up modern cloud infrastructures or reliable IT support — I deliver pragmatic, scalable solutions that make a tangible difference in day-to-day operations. I work on an hourly or project basis, enable quick response times and adapt precisely to your company's needs. For startups, SMEs and existing IT teams, I'm a reliable partner who bridges short-term bottlenecks and supports long-term technical evolution.
About me
I'm a passionate software developer and IT specialist focused on robust web applications, cloud and on‑prem infrastructure, and automation. In my daily work I bridge development and operations to build scalable systems with clear architecture and efficient delivery.
I care about pragmatic solutions, a clean codebase, and transparent processes. I enjoy working closely with teams, identifying bottlenecks, and implementing improvements that increase maintainability and speed over the long term.
Outside client projects, I run a private Proxmox cluster and build and maintain my own projects. In both hardware and software, I continuously try new technologies and work on developing my skills deliberately.
Core services
Software development & automation
- Custom applications
- API integrations
- Scripts
- Process optimizations
System administration & infrastructure
- Managing existing systems
- Monitoring
- Security checks
- Containerization
- CI/CD
IT consulting & architecture advisory
- Support for technical decisions
- Evaluation of new tools
- Modernization of existing systems
Support & troubleshooting
- Quick fixes remotely or on‑site
- Troubleshooting
- Stabilizing systems
Technologien & Tools
Frontend UI & frameworks
Backend & APIs
Cloud & infrastructure
Data & storage
Programming languages
Platform & operating systems
Professional experience
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Independent IT consultant & developer · Self‑employed
SE- Freelance software development and IT consulting around modern web applications, infrastructure automation, and DevOps tooling
- Growing focus on AI-assisted product features: designing custom agent architectures and building MCP servers that expose client systems and APIs to LLMs
TypeScriptJavaDocker & KubernetesAzureAnsibleProxmoxPrometheus & GrafanaGitHub ActionsZFSInfluxDBLinux -
DevOps Technical Lead · Bitberry (Vienna, Austria)
BB
- Designed and maintained CI/CD pipelines (GitHub Actions) across multiple product teams
- Architected development and production infrastructure on Docker, Kubernetes, Azure, and Proxmox
- Enforced automated quality gates and standardised deployment workflows across the engineering organisation
Docker & KubernetesAzureAnsibleProxmoxPrometheus & GrafanaGitHub ActionsZFSInfluxDBLinuxBash -
Full‑stack developer · Bitberry (Vienna, Austria)
BB- Delivered end-to-end production web applications across TypeScript, Java, and Python stacks, partnering with clients and product teams from architecture through rollout
- Architect and senior engineer on Redberry, a federated GraphQL CMS framework that powers multiple branded SaaS products from a single codebase – contributed to service decomposition, the content-type codegen pipeline, and the multi-tenant deployment model
- Led refactoring initiatives that raised code quality through stronger type-safety, linting, and expanded test coverage
TypeScriptJavaVue.js / Nuxt.jsReact / Next.jsNestJSJava SpringNode.jsGraphQLMongoDBMySQLPostgreSQLRedisDocker & Kubernetes -
Software Engineer · Corestad (Vienna, Austria)
CS
- Contributed to externally commissioned web application projects – feature development, bug-fixing, and code review
- Provided operational support for client server infrastructure
Node.jsVue.js / Nuxt.jsMongoDBMySQLDocker & KubernetesLinuxGraphQL -
IT Administrator · NAVAX (Vienna, Austria)
NX
- Administered hybrid Windows, Linux, and Microsoft 365 environments, maintaining uptime and security for internal users
- Developed internal tooling in C# / .NET and Java Spring that streamlined server management and reduced manual operational overhead for the IT team
AzureActive DirectoryPowerShellLinuxBashJavaJava SpringC#.NET / ASP.NETMySQL -
IT Intern · NAVAX (Vienna, Austria)
NXShort-term internship in the IT department
Active DirectoryPowerShellLinuxJavaScript -
IT Intern · Buchhaltungsagentur des Bundes (Vienna, Austria)
BDB
Short-term internship in the IT department
Active DirectoryPowerShellJavaScript
Education
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B.Sc. Computer Science · Vienna University of Technology
TUW
Bachelor of Science (B.Sc.) in Computer Science
Bachelor -
Matura · HTL Rennweg
HTL
Matura in Information Technology
Matura
Sometimes personal projects tell the best stories
Logigator: Learn and apply digital logic with ease
Logigator is an open platform I developed for designing and simulating digital logic circuits directly in the browser. It combines an intuitive editor with a fast real‑time simulation and is suitable both for first learning steps and for more demanding experiments with more complex, hierarchical circuits.
Highlights
Technologies
Education & recognition
The project has been covered in the tech press — including the IT magazine c't (issue 15/2024). In addition, Logigator has found its way into teaching materials and school books, supporting teachers in hands‑on instruction of digital logic. The combination of immediate feedback and a low barrier to entry makes it ideal for learning environments and self‑directed experimentation.
I actively maintain the platform: regular maintenance, security updates, targeted bug fixes and quality improvements provide a reliably stable foundation. Users benefit from a consistent experience and a robust codebase on top of which I add need‑driven optimizations and meaningful enhancements.
My homelab: Proxmox virtualization
I operate a self‑hosted home infrastructure lab that closely resembles a small production environment. It is built around a Proxmox cluster with two nodes and an external QDevice to maintain quorum, running high‑availability virtual machines and containers with replication and automated failover. Network traffic for both home and virtualized workloads is handled by a virtualized OPNsense firewall, using VLAN‑based segmentation, policy‑based routing, and traffic shaping for isolation and control.
The storage backend manages over 400 TB of data using ZFS and LVM, including redundancy, caching layers, and cold spares. Data protection follows a 3‑2‑1 backup strategy with automated, encrypted offsite backups. The entire environment is monitored using Grafana and InfluxDB, providing metrics and alerts for critical failure conditions. Infrastructure provisioning is largely automated with Ansible and cloud‑init, and multiple Kubernetes clusters are used to run both private services and public‑facing workloads, like Logigator.
Highlights
Technologies
Screenshots
Ready for the next step?
Let's have an informal chat about your current challenge — often a brief exchange is enough to find clear first approaches.
Make an inquiry