Available for employment, freelance & consulting projects

Markus Furtlehner.

Senior Software Engineer & Solution Architect

Custom software end-to-end — from mainframe banking through enterprise backends to cloud-native & AI systems.

↳ Linz · Leonding, Austria · DACH (remote & on-site)
001

Profile

Senior Software Engineer and Solution Architect with 19+ years of professional experience building custom software — from mainframe banking through enterprise backends to cloud-native and AI systems. I design, build and operate solutions end-to-end: from the database schema through scalable .NET / Node.js backends to DevOps, infrastructure and IoT hardware. As founder and managing director of IT-Trail GmbH I combine deep technical expertise with entrepreneurial thinking — delivering from architecture to operations.

Experience Since 2007 · 19+ years
Location Linz, Austria · DACH
Languages German · English
Focus .NET · Cloud · AI/Agentic
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Skills

Expert knowledge

  • C#
  • .NET Core / .NET Framework
  • ASP.NET
  • Blazor
  • Node.js
  • HTML / CSS / JavaScript
  • Grafana
  • Windows client & server
  • Microsoft Office

Languages

  • C#
  • TypeScript / JavaScript
  • SQL
  • PowerShell
  • Python
  • PHP
  • Java
  • PL/I
  • C / C++
  • Assembler
  • VB6 / VB.NET / VBA
  • Go
  • Perl
  • Pascal / Basic

Frameworks & Platforms

  • .NET Core / .NET Framework
  • ASP.NET
  • Blazor (MudBlazor, HavIt)
  • SignalR
  • Node.js
  • React / React Native
  • HTML / CSS
  • Fastify / Express
  • Web Components
  • jQuery / Ajax
  • WordPress

Cloud & DevOps

  • AWS (EC2, Lambda, CloudWatch, SNS, DynamoDB)
  • Azure
  • Docker
  • Ansible
  • Caddy / Traefik
  • Nginx / PowerDNS
  • CI/CD (GitHub Actions)
  • Linux & Windows Server
  • macOS / Unix

Data & Monitoring

  • MSSQL
  • PostgreSQL
  • MySQL / MariaDB
  • Oracle PL/SQL
  • DB2
  • Valkey / Redis
  • Drizzle ORM
  • InfluxDB
  • MS Access
  • Grafana
  • Splunk

AI & Agentic

  • LLM integration (OpenAI, Anthropic, Google)
  • Agentic development
  • MCP (Model Context Protocol)
  • OCR pipelines
  • AI-assisted engineering

IoT & Embedded

  • ESP32 (ESP-IDF)
  • Arduino / Controllino
  • PlatformIO
  • Raspberry Pi / SBCs
  • AVR (WinAVR, PonyProg)
  • PCB design (EasyEDA, EAGLE)
  • 3D printing (FreeCAD, Cura, OctoPrint)
  • KNX (ETS6)
  • Home Assistant / Node-RED
  • B&R Automation / PLC
  • Windows Embedded CE

Enterprise & Infrastructure

  • Microsoft System Center (SCCM, SCSM, SCORCH)
  • Active Directory
  • Keycloak (OIDC / OAuth 2.0)
  • Stripe / Paddle
  • WebDAV / FTP
  • IBM host (3270, CICS)
  • Tabex
  • SAP
  • Microsoft Dynamics
  • Kendox InfoShare (DMS)
  • Fortigate
  • Microsoft 365 / Office

Tools

  • Visual Studio
  • Eclipse
  • NetBeans
  • OptimalJ
  • Toad
  • 3ds Max / LightWave / Cinema 4D
  • Photoshop

Methods

  • Solution Architecture
  • Product Ownership
  • IT Consulting
  • Scrum / Agile
  • Team leadership
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Experience

Managing Director & Senior Consultant · IT-Trail GmbH

since 2025

Linz, AT

Founded and run my own company for custom development, web hosting, support and DevOps.

  • ▸ Custom software development for clients across the DACH region
  • ▸ Web hosting, DevOps automation and ongoing support
  • ▸ Architecture and operation of in-house SaaS products
C#Node.jsWebWindowsLinuxSQLMS365AzureAWS

Independent IT Consultant · itruf-consulting.at

since 2023

Linz, AT

Full-time since 2024 — custom development, web hosting, support and DevOps.

  • ▸ Design and development of client-specific software solutions
  • ▸ Web hosting and build-out of hosting & deployment infrastructure
  • ▸ IT support and DevOps for client systems
C#Node.jsWebWindowsLinuxSQLMS365AzureAWS

Software Engineer & Consultant · Kendox AG

2022 – 2024

Vienna, AT

Development and consulting in the document-management (DMS) space with a focus on cloud automation.

  • ▸ Designed and built deployment tooling for automated installation of client systems in the cloud
  • ▸ Automated client-system configuration in the cloud
  • ▸ Consulting for DMS (Kendox InfoShare) and OCR for incoming invoices (Dexpro)
PowerShellC#MSSQLREST APIKendox InfoShareOffice

DevOps Engineer (AWS Cloud) · Namirial GmbH

2020 – 2022

Ansfelden, AT

Development, administration and DevOps for worldwide client systems in the AWS cloud.

  • ▸ Automated EC2 deployments for various client systems worldwide
  • ▸ Centralized all log files in Splunk
  • ▸ Alerting based on log events across systems and applications
PowerShellAWS PowerShell SDKNode.jsDynamoDBAWS (EC2, Lambda, CloudWatch, SNS)SplunkOffice

Head of IT · extrunet GmbH

2019 – 2020

Eberstalzell, AT

Led the IT department including system administration, development and IT support; trained one apprentice.

  • ▸ Planned and executed the relocation of the entire server & client infrastructure
  • ▸ Real-time B&R ↔ Grafana interface visualizing machine parameters and measurements
  • ▸ Trade-fair IT for K-Messe Düsseldorf: planning, installation and on-site support of info screens, tablets, kiosks and IT infrastructure
C#ASP.NETMSSQLHTMLWordPressGrafanaB&R AutomationFortigatemacOSOffice

Software Engineer · bet-at-home.com

2017 – 2019

Linz, AT

Co-developed and evolved the backend management software with a focus on the betting module.

  • ▸ Backend management software for providing and configuring bets on the website and for marketing tools
  • ▸ Built a new interface importing Betradar betting data into the backend
  • ▸ Outlook add-in for automatic sorting of first-level support mail and routing to the responsible department
C#MSSQLOffice (Outlook add-in)
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Selected projects

Sitebin.io

2026

Open-core hosting service (MIT): upload files from the browser, a script or an AI agent and instantly get a public URL — served as a static web server or as a viewer for PDF, Markdown, DOCX, code and media.

GoCaddyDockerMCPOIDC / OAuth 2.0KeycloakWebDAV / FTPHTML / CSS / JavaScriptGitHub Actions
View project

SiteHorse.ai

2025 – 2026

User-friendly, AI-powered platform for building small to mid-sized websites including hosting — automated and with no technical knowledge required.

AI / LLMSaaSNode.jsTypeScriptHosting
View project

Quell Soundmasking

2025

Sound-masking device end-to-end for AIGA Akustik GmbH: from enclosure through PCB and firmware to the management platform and app control.

ESP32CEasyEDAFreeCAD.NET CoreReact Native
View project

Cloud Platform

2025

Central web interface with distributed agents (Windows service / Linux daemon) to manage, monitor and deploy a cloud infrastructure.

.NET CoreBlazorMudBlazorSignalRDockerLinuxWindowsGrafanaPostgreSQLAnsiblePowerDNSNginxPython
In-house

OCR service with LLM

2023

OCR application with a REST interface returning the data of predefined fields as structured JSON.

Node.jsMariaDBWindows ServerLLMs (Google, OpenAI, Anthropic)REST
In-house

Printed Moments

since 2017

A custom-built photo booth — hardware and software — for weddings, corporate events and celebrations; concept, development, support and hosting.

LinuxSBCsArduinoShellNode.jsHTML / CSS / JavaScriptCFreeCADCuraOctoPrint
View project
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Education

Higher Technical College (HTL) for IT

2002 – 2007

HTBLA Leonding · Leonding, AT

Specialization in IT & organization. School projects: custom operating system, autonomous robot, 3D engine (C#/DirectX 9).

Exchange year

1999 – 2000

Excelsior Laerskool · Port Elizabeth, South Africa

A school year in South Africa — fluent English and basic Afrikaans.

Secondary school (music focus)

1998 – 2002

Musikhauptschule Leonding · Leonding, AT

Primary school

1994 – 1998

Volksschule Leonding · Leonding, AT

Languages

  • German Native
  • English Full professional proficiency
  • Afrikaans Basic

Certifications & licenses

  • ✓ Private Pilot License (PPL-SEP)
  • ✓ Driver's license (B)
  • ✓ IT liability insurance (exali)

Interests

Sport flying (PPL)Archery3D printingGuitarCard tricksTravelPolitics

Interested in working together?