Kurt Blumenschein - Backend Developer for Microservices

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Leonstein, Austria

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Experience

Jan 2025 - Present

1 year 11 months

Austria

Backend / Microservices Developer, DevOps, Test Automation

Fa. RCA, Rail Cargo Austria AG

Backend / Microservices Developer, DevOps, Test Automation
~100 developers, ~10 teams, per team: 1 PO, 1 ScrumMaster, 1UX, 1 Developers, 1 Tester
.net core 8, 9, C#
Microservices, Clean-Architecture, MediatR, CQRS
GraphQL, REST, SDL
Azure DevOps, CI / CD-pipelines, Azure-Service Bus, Rabbit-MQ, Kafka, Azure App Configuration, Azure KeyVault, Azure Kubernetes AKS
Splunk, dashboards, custom metrics, Elastic-Search, Kibana (ELK)
Azure SQL-Databases, Azure Cosmos DB
Architecture decisions, event governance, COP (Backend, DevOps, FrontEnt, Testautomations)
AI, Copilot, creating Tests-Template
Scheduler, Hangfire, Quartz
Automated Unit- and Integrationtests
Automated E2E-Tests, Playwright Test-Automation, BDD, Gherkin, Cucumber
Tracking of shipments
GIS, GPS data, geofence, geo search, position tracking, asset positions
Jira, Confluence
Focus on high performance message oriented architecture (~xx e6 messages / month / service)
Structured logging, Serilog, OTel, Splunk, ApplicationMonitoring
Integration of different position - data sources (GPS based data) into AzureDataLake

Jun 2024 - Dec 2024

7 months

Backend / Microservices Developer, DevOps

Fa. XXX GmbH

Backend / Microservices Developer, DevOps
~100 developers, ~10 teams, per team: 1 PO, 1 ScrumMaster, 1UX, 5-15 Developers, 2 Tester
Portal for dealers to manage, buy, parts, spare parts, claims.
Container, Kubernetes, AKS (Helm-Charts), Docker
MS SQL-Server, Entity Framework
Azure Entra ID, Keycloak, OpenID Connect, IAM
Scheduler, Hangfire, Quartz
Scrum, international distributed team
C#, .Net Core 8, 9, Entity Framework, VS2022
GraphQL, Hot-Chocolate, Azure Service Bus, , OPA, OPAL (Open policy agent), Quartz, Fluent, AutoBognus, Grafana (Loki, Jaeger),
Azure DevOps, CI / CD-pipelines, Azure-Functions, Azure Event Hub, Azure Service Bus (MassTransit), Azure Feature switch Management, Bicep
Microservices, Clean Code Architecture, CQRS, Fluent, MediatR, SOLID, Design-Pattern
CI, CD, Testing-Strategy, Unit-, Integrations-, XUnit, Substitute, WireMockServer
SonarQube, SonarCloud
SAP ERP, SAP CX
Structured logging, Serilog, OTel, Grafana, ApplicationMonitoring

Sep 2023 - Jun 2024

10 months

Stuttgart, Germany

Backend / Full-Stack / Microservices Developer, DevOps

Fa. Bosch GmbH

Backend / Full-Stack / Microservices Developer, DevOps
9 developers, 1 PO, 1 ScrumMaster
MES (manufacturing execution systems), NEXEED, OpCon, ProductSetupManagement, PackagingControl, IdBuilder, PartTraceability, ErpConnectivity, SetupSpecs
Container, Kubernetes, AKS, Rancher, Docker, Helm (Medium), Terraform
MS SQL-Server, Oracle, MySql, Entity Framework
Keycloak, SSO, OpenID Connect, MFA, IAM
SAP-Interface, S4-HANA, SAP-OData Endpoints
SAP Abap (Basic), RAP
SAP Fiori, Business-Application-Studio (Basic)
SAP-UI5, JavaScript Front-End, Proof of concept (Basic)
Scrum, international distributed team, MIRO
SAFE, 4 Arts, ~200 international developers
C#, .Net Core 6, 7, 8, Entity Framework, VS2022
RabbitMQ, AMQP, Messaging
Refactoring, Microservices, Clean Code Architecture, CQRS, Fluent, MediatR, Behaviours, SOLID, Design-Pattern
Workflow-Foundation, coded activities, custom workflows
WPF, WCF
CI, CD, Testing-Strategy, Unit-, Integrations-, System, Security and Performance-Tests (Locust, Python). BDD, Behavior driver development, Gherkin, Cucumber (Code - ADO – Link), Cypres (Web-Application Test-Framework), Selenium, Playwright Test Automation
Release-Strategy (blue / green, canary)
Azure DevOps, GIT, Nuget, Build- and Releasepipeline, Azure-Functions
Azure AppService
Arc42, AsciiDoc, AuthorIt
SonarQube
Fullstack (Medium), Angular HTML, CSS, Typescript (Medium), MAUI (Medium), Blazor (Medium), NGRX
Python (Medium)
PackagingProcess-Engine (Process, SubProcess, Steps with Parameters)
Hardware communication (Scanner, scales, printers)
Performance optimization and assurance (performance tests systematically integrated into CI (Locust))
DSC (desired state configuration) Management Scripts (C#, PS), MES / SAP Infos as PowerShell Plugin
PowerShell, AzureShell
MS-365, OIDC, Plugins, Graph, Users- Mail / Calendar
Structured logging, OTel, ApplicationInsights, ApplicationMonitoring

Mar 2023 - Sep 2023

7 months

Vienna, Austria

Backend / Microservices Developer

Fa. Kapsch

Backend / Microservices Developer
3 developers, 1 PO, 1 ScrumMaster
C#, .Net, .Net Core 5/6
Microservices, backend development
OData Endpoints
CQRS command query / request separation pattern
IAM (Identity Access Management) implementation.
Azure AD, Azure B2C, authentication & authorization, ClientCredentials, OnBehalfOf and B2C Flows. Log Analytics, Application Insights.
Graph-API
Elastic (Document indexing)
RabbitMQ, ServiceBus
Scheduler, Quartz
Sitecore as frontend (basic)
Docker, OpenShift, AKS Azure Kubernetes Service
Automated tests
IoC, DI, MediatR, GIT, VS2019, VS2022

Aug 2022 - Mar 2023

8 months

Backend / Full-Stack / Microservices Developer

Fa. Neusta Consulting

Backend / Full-Stack / Microservices Developer
8 developers, 1 DevOps, 1 PO, 1 Tester, 1 ScrumMaster
C#, .Net, .Net Core 5/6, EF.Core
Container, Kubernetes, AKS, Docker
MS SqlServer
Microservices, backend development
GraphQL
NServiceBus
CQRS command query / request separation pattern, Api / Gateway / BFF backend for frontend
IAM (Identity Access Management) implementation.
Aurelia (JS) Frontend (medium)
Automated tests
GIT, VS2022

Oct 2021 - Sep 2022

1 year

Frankfurt, Germany

Backend / Microservice Developer

Fa. Universal-Investment

Backend / Microservice Developer
6 Devs, 0 DevOps, 1 PO, 2 Testers, 1 ScrumMaster
Microservices (Clean Architecture)
Microsoft Dynamics 365 CRM, FetchXML
Microsoft PowerBi, Reporting, SSRS, Microsoft Sharepoint
Moq
ApplicationInsights
Fluent, Validation
Azure, Service Bus, Cognitive Search
WebApi, REST, Swagger, Authentication / Authorization, OpenID, OData
SimCorp Portfolio & Reporting REST-Api
Credit / calculation processing, Marzipan-API. Effective interest rate calculation, liquidity costs, REST-Interface, Token based authorization
Redis (Cache, Message Broker)
C#, .Net Core
Azure DevOps, Build-Pipelines, CD / CD, Docker, Kubernetes, k9s, Terraform
UnitTests
SCRUM, distributed, international team

Mar 2021 - Oct 2021

8 months

Graz, Austria

Backend / Architect

Fa. Anton Paar

Backend / Architect
2 Devs, 1 PO
C#, .Net, .Net Core, Mono
Refactoring of a monolithic application
Hardware / OS Abstraction Layer
Linux
Bitbucket
Containers, Docker
Embedded Linux
Automated tests
IoC, DI, GIT, VS2019

Jan 2020 - Present

6 years 11 months

Wels, Austria

CRM Developer

Fa. blocktec

CRM Developer
SalesForce, Lightening APEX, Database, REST Interface.
VB.Net Office automation, VB-Script
DSC (desired state configuration) Management Scripts (C#, PS)

Apr 2019 - Mar 2021

2 years

Stuttgart, Germany

Backend / Microservice Developer

Fa. Bosch GmbH

Backend / Microservice Developer
4 Devs, 1 DevOps, 1 PO, 1 ScrumMaster
MES (manufacturing execution systems), NEXEED, OpCon
DigitalTwin, ProductTwins
Azure
SAP-Interface
Microservices
WebApi, REST, Swagger, Authentication / Authorization, OpenID, OData
Scrum, international distributed team
MES Solution, OpCon, NEXEED
C#, .Net Core 2.0, 2.1, 2.2, VS2017, 2019, TFS
Docker, Kubernetes, Containers
PowerShell scripting
Keykloak, OpenId Connect, OAuth 2.0, IdentityServer, Authentication, Authorization
Entity Framework, EF Core
MS SQL-Server, SQLite, LiteDB, CouchDB
Workflow-Foundation, coded activities, custom workflows
WPF
Automated UI tests (Ranorex, Appium)
UnitTests
DevOps, TVFC, GIT, Nuget, Build and Release pipeline
SonarQube
ALM (Jira, Confluence, TFS, Azure DevOps, Git)

Jan 2019 - Apr 2019

4 months

Munich, Germany

Developer / Desktop Applications

Fa. HAWE

Developer / Desktop Applications
Mahapps, WPF application
MES
VS2017, VS2019
.Net 4.7.2
SAP Connectivity
MVVM, Prism
Bartender
Label creation
OPC Siemens Integration
WebIO-Interface for machine control
EntityFramework, SqlServer
MES production data, TracabilitySystem
ALM (Azure DevOps, Git)

May 2018 - Present

8 years 7 months

Steyr, Austria

Full-Stack Developer / Desktop and Backend Applications

Fa. SKF

Full-stack developer / desktop and backend applications
5 developers, 1 PO
C++ analysis and evaluation of measurement data, (laser) sensors, National Instruments DAQ devices, integration of measurement hardware.
QT (5.x, 6.x), QT-Creator, QT-Designer, Squish
QML / Widgets interfaces / MVVM, Components, UI-Library
REST interface, OATPP
Boost
JavaScript charts library (echarts)
Databases (MySql, SQLite), migrations
Device communication with laser (serial, TCP / IP, UDP)
Audio signal processing, FFT, Windows Audio (WASAPI), resampling, filtering
Messaging, MQTT
Automated UI tests with Squish (BDD, Gherkin), Python
Evaluation of sensor signals in the frequency and time domains and display in the UI
VS2017, 2019, 2022, SVN, GIT
Replacement of an existing application

May 2018 - Dec 2018

8 months

Munich, Germany

Developer / Desktop Applications

Fa. Singulus

Developer / desktop applications
C# / WPF
Application for production optimization
User management
Licensing
GIT
.Net 4.6

Jan 2018 - May 2018

5 months

Pressath, Germany

Backend Developer / API Integration

Fa. Lippert

Backend developer / API integration
C#
Logistics
Parcel service providers, DHL, DPD
REST, SOAP
Zebra printers
.Net 4.6
Automated tests (unit and integration tests)

Jun 2017 - Jan 2018

8 months

Bolzano, Italy

Developer / Desktop and Server Applications

Fa. TecnoAlpin

Developer / desktop and server applications
C#
GPS-referenced geodata
Process control system
WPF, MVVM, Infragistics
MES, IoT
PowerShell scripting
WebApi, Swagger
.Net 4.7
Azure SQL Database backend
OPC Siemens integration
ALM (TFS, Azure DevOps, Git)

Mar 2017 - Jun 2017

4 months

Freiburg im Breisgau, Germany

Developer / Test Automation

Fa. lesswire Freiburg / Berlin

Developer / test automation
C++ / QT 5 test application
USB communication with hardware
Test wizard
XML data storage

Feb 2017 - Mar 2017

2 months

Hamburg, Germany

Developer / Consultant

Fa. seca

Developer / Consultant
Middleware communication service (C#, VS2015, VS2017).
Socket communication (TCP / IP)
Automated tests
Cloud (AWS)
Penetration tests

Oct 2016 - Feb 2017

5 months

Oberkochen, Germany

Developer

Fa. Carl Zeiss Industrielle Messtechnik

Developer
WPF / C# application with MVVM (VS2015).
Collect, analyze and process XML, text and distributed log files from a defined network area.

Mar 2016 - Oct 2016

8 months

Vienna, Austria

Developer / Desktop and server applications

Fa. Dorotheum

Developer / Desktop and server applications
WPF application with MVVM and Telerik (C#, VS2015, VS2017).
WebApi, Swagger
SqlServer / Oracle databases
Web services
ALM (Jira, Confluence, Git)
Integration of a document management system (DMS) into a WPF interface, connection, full-text search, versioning, workflows.
Implemented an authorization concept in the application
GIT, SVN, TFS

Jan 2016 - Mar 2016

3 months

Developer / Project Manager

xxxx

Developer / Project Manager
IoT, .Net CORE application on Linux / Windows
C#, code migration
WebApi, Swagger
REST-Api
VisualStudio-Code, VisualStudio-Teamservices
SCM, TFS and GIT workflow
Angular, Bootstrap

Dec 2015 - Mar 2016

4 months

Graz, Austria

Developer / Desktop applications / REST services

Fa. DCCS

Developer / Desktop applications / REST services
WPF application with MVVM and DevExpress (C#, VS2015).
Create Office documents for a document management system (DMS), connection, full-text search.
COM integration and plug-ins for Office (COM, COM+, VSTO)
Workflow implementation.
ServiceNow integration of workflows into an existing application.
WebApi, Swagger.
SqlServer databases.
Microservices
MS Reporting.
Native PDF and Excel reports
ActiveDirectory integration, user authentication
.Net 4.5

Sep 2015 - Dec 2015

4 months

Salzburg, Austria

Developer

Fa. Semonit

Developer
C / C++, QT5, extensions and customizations to a web and client test framework.
Platform-independent development for Windows / Linux
Multithreading
Network communication via TCP sockets
Scripting (Perl)
C / C++ unit tests (cfix and WinUnit)
C# test automation
Automated printing of preconfigured reports in VB.net
Java configuration & UI

Apr 2015 - Dec 2015

9 months

Vienna, Austria

Developer

Fa. SchneiderSoftware

Developer
C# communication project (Telnet, SSH, AIX)
.Net 4.5 Win 7 and 10 clients (Winforms, WPF)
Unit and integration tests

Jan 2015 - Apr 2015

4 months

Berlin, Germany

Developer

Fa. InSystems

Developer
MS-SqlServer reporting, Sql and RDL (Report Definition Language).
MES (Manufactoring Excecution System) extension for safety-critical components.
C#, Winforms, WPF client extensions
MFC C++ client extensions

Jan 2014 - Dec 2016

3 years

Lienz, Austria

Developer

Fa. Liebherr Haushaltsgeräte

Developer
WPF / C# / MVVM applications with SqlServer 2012 as the backend.
ActiveDirectory integration, user authentication, profiles.

Jan 2012 - Dec 2014

3 years

Lienz, Austria

Developer

Fa. Liebherr Haushaltsgeräte

Developer
Database projects (SqlServer 2005, 2008, 2012 and Oracle) C#.Net, P-SQL, T-SQL
Automatic generation of SqlServer database schemas (C# and T-SQL) based on Oracle and SQL Server schemas
Automatic generation of SqlServer StoredProcedures (C# and T-SQL)
Test automation (C#)
CRUD StoredProcedures (C# and T-SQL)
Sql documentation (Redgate SqlDoc, Turtle)

Jan 2004 - Present

22 years 11 months

Wels, Austria

Developer / Project Lead

Fa. Trotec

Developer / Project Lead
An international patent and a reference in another project on the topic of image processing with laser machines.
Image processing project with C++ / C# / C++ CLI. Object recognition and automatic cutting path compensation.
Geometric transformations, conversion of Bezier curves into circular arcs
OpenCV / Emgu.Net, standard stack, adaptive threshold, Canny, Soebel, blurring, Hough transform, contour detection,
Color space analysis and corrections.
Raster algorithms (ErrorDiffusion and OrderedDithering)
Repair algorithms for “distorted” geometries.
Installation packages (MSI, InstallShield, Nullsoft, WiX)
Automated UI tests (Ranorex)
QT (4.x, 5.x)

Jan 2003 - Dec 2006

4 years

Steyr, Austria

Developer

BMW Motoren Simulation & Diagnostik

Developer
Automotive, control units, diagnostics
Test automation based on C / C++ / VB.Net COM and Labview, Windows XP and Windows 2000 operating systems
Automated test environment for test cycles on diesel engine control units. C/C++/C# was used to control various sensors and actuators directly or via COM servers. I implemented individual COM servers there, as well as parts of the overall test automation. The individual COM servers are essentially simulations of subsystems that would otherwise be difficult to integrate into the test setup. The goal was to test a software release for the engine control units in advance with relatively little effort.

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Manufacturing, Information Technology, Automotive, Transportation, Banking and Finance, and Arts and Crafts.

Manufacturing

Information Technology

Automotive

Transportation

Banking and Finance

Arts and Crafts

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Product Development, Project Management, Information Technology, Quality Assurance, Customer Service, and Operations.

Product Development

Project Management

Information Technology

Quality Assurance

Customer Service

Operations

Skills

25 Years Of Experience In Software-Engineering / Devops
30 International Projects In Multilingual Teams
3 Microsoft Certifications
2 International Patents
C# C++ .Net .Net Core Wpf Databases
Microservices Azure Container Kubernetes Ci / Cd Agile
Qt / Qml Testautomation Typescript Bdd Elastic Splunk
Rest / Graphql Rabbitmq Servicebus Iam Odata Cqrs
Daq Jira Audio Algorithm Architecture Openapi
Docker Swagger Redis Openid / Oidc Oauth Confluence
Apm Locust Entra / Identity
Gps / Geo Ms Graph / Dynatrace

Languages

German

Native

English

Intermediate

Spanish

Elementary

Certifications & licenses

ASTQB

Microsoft Certified: Azure Administrator Associate

Microsoft

Microsoft® Certified Technology Specialist: .NET Framework 3.5, Windows Presentation Foundation Applications

Statistics

Experience

Total positions 27

Experience in Manufacturing 23 y

Avg length 2 y 3 m

Longest experience 22 y 10 m

Global experience

Countries worked in 3 (Austria, Germany, Italy)

Primary country Austria

Expertise

Recent roles Backend / Microservices Developer, DevOps, Test Automation, Backend / Microservices Developer, DevOps, Backend / Full-Stack / Microservices Developer, DevOps

Main industries Manufacturing, Information Technology, Automotive

Main business areas Product Development, Project Management, Information Technology

Qualifications

Certifications earned 3

Member since

December 2025

Last update

November 2026

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Frequently asked questions

Have questions? Find more information here.

Kurt is based in Leonstein, Austria and can operate in on-site, hybrid, and remote work models.

Kurt speaks the following languages: German (Native), English (Intermediate), Spanish (Elementary).

Kurt has at least 24 years of experience. During this time, Kurt has worked in at least 19 different roles and for 25 different companies. The average length of individual experience is 1 year and 11 months. Note that Kurt may not have shared all experience and actually has more experience.

Based on recent experience, Kurt would be well-suited for roles such as: Backend / Microservices Developer, DevOps, Test Automation, Backend / Microservices Developer, DevOps, Backend / Full-Stack / Microservices Developer, DevOps.

Kurt's most recent position is Backend / Microservices Developer, DevOps, Test Automation at Fa. RCA, Rail Cargo Austria AG.

In recent years, Kurt has worked for Fa. RCA, Rail Cargo Austria AG, Fa. XXX GmbH, Fa. Bosch GmbH, Fa. Kapsch, and Fa. Neusta Consulting.

Kurt is most experienced in industries like Manufacturing, Information Technology, and Automotive. Kurt also has some experience in Transportation, Banking and Finance, and Arts and Crafts.

Kurt is most experienced in business areas like Product Development, Project Management, and Information Technology. Kurt also has some experience in Quality Assurance, Customer Service, and Operations.

Kurt has recently worked in industries like Manufacturing, Information Technology, and Transportation.

Kurt has recently worked in business areas like Product Development, Project Management, and Information Technology.

Kurt has 3 certificates. These include: ISTQB Certified Tester, Microsoft Certified: Azure Administrator Associate, Microsoft® Certified Technology Specialist: .NET Framework 3.5, and Windows Presentation Foundation Applications.

Kurt is immediately available full-time for suitable projects.

Daily rate distribution

0% 25% 50% 75% 100%

<€800 €800-960 €960-1120 €1120-1280 €1280+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

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Daily rate avg. 945 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

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750

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250

Median rate 940 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Calculated based on our freelancers’ daily rates as of 6 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.