11/11/2026 updated
100 % available
Senior .NET Developer | Kubernetes, Azure, OpenShift, Kafka | 11+ years | 100% remote
Tlustice, Czech Republic
Only remote
Smíchovská střední průmyslová škola, Prague - Information Technology (2010-2014)About me
Backend developer from the Czech Republic with 11+ years in .NET. I build and run microservices on Kubernetes (AKS, OpenShift) with Kafka and MQTT, and take them all the way to production. I work fully remote and can come on site about once a month.
HelmAzure DevOpsASP.NETApplication Programming Interfaces (APIs)Microsoft AzureC Sharp (Programming Language)ElasticsearchEntity FrameworkPython (Programming Language)PostgreSQLMicrosoft SQL ServersMessage Queuing Telemetry Transport (MQTT)OpenShiftOracle DatabasesWindows PowerShell
Backend developer with 11+ years of .NET experience, from banking systems and marketing platforms to a car configurator and manufacturing systems in the automotive industry. I design, build and run .NET microservices on Kubernetes (AKS, OpenShift) connected through Kafka, MQTT and NServiceBus, and I take them all the way to production: CI/CD, Helm, certificates, monitoring and incident handling.
Backend: C#, .NET 10, ASP.NET Core Web API, Entity Framework Core, worker services
Cloud and containers: Azure (AKS, API Management, Blob and Table Storage), Kubernetes, OpenShift, Docker, Helm
Infrastructure as code: Bicep, Terraform
Messaging and caching: Apache Kafka (including mTLS), MQTT, NServiceBus, RabbitMQ, Redis
Databases: MS SQL, Oracle, PostgreSQL
CI/CD and code quality: Azure DevOps, Jenkins, GitLab, SonarQube, JFrog
Operations: Prometheus, OpenTelemetry, Elasticsearch and Kibana, TLS certificates, pod performance and memory tuning
Other: Python, PowerShell, AI coding tools (Claude Code)
Frontend (working knowledge): React, TypeScript, HTML, CSS, Sass
Industries: automotive, energy, banking, online marketing.
I use AI agents every day as a regular working tool. They help me find my way around an unfamiliar codebase within days, go through logs, configuration and source code at once during production incidents, and pick up technologies I don't know in detail yet. Everything still goes through tests, code review and a test environment, and I am responsible for the result.
Availability: freelance (B2B) contract, 100% remote only. I can come on site about once a month by arrangement. Daily rate: CZK 8,500-9,000 excl. VAT.
Languages: Czech (native), English (full professional proficiency).
Experience
Professional experience10+ years
Freelancer since2017
Languages
EnglishFluentCzechNative speaker
Project history
Automotive, online car configurator: one of two main developers of the platform that composes and serves car images for the configurator and other brand channels. Dozens of .NET services for online and batch image rendering, render parameters and caching. Built a media-assets middleware from scratch (image transformations, Azure Blob and Table Storage, cache invalidation driven by Kafka events). AKS infrastructure as code (Bicep, Terraform), Helm charts, shared Azure DevOps pipeline templates with SonarQube and JFrog, APIs exposed through Azure API Management.
Automotive, manufacturing information systems: backend development and operations. Data collection from production lines over MQTT, worker services, messaging via NServiceBus and Kafka, deployment to OpenShift through Azure DevOps release pipelines. Troubleshooting of queue delays and MQTT connection drops, taking over projects from other teams.
Energy, internal case and document management system: .NET 10 microservices on Oracle, Kafka secured with mTLS, deployment to OpenShift with Helm and Jenkins, GitLab. Production incidents such as expired TLS certificates and pod restarts caused by memory limits.
Forecaster: a system for publishing and optimising marketing campaigns and their costs in Google Ads and Bing Ads. I worked on the new scalable version built on .NET Core microservices running in Kubernetes on Azure.
Productcaster: collecting product feeds and catalogues, processing, enriching and publishing them.