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mka4tech

Software & systems studio – Ulm

We build the systemsbehind serioussoftware.

Backend, cloud-native delivery, and the infrastructure underneath — engineered to hold.

Start a projectSee our services

The studio

From backend to infrastructure — engineered end to end.

mka4tech is a founder-led software and systems studio in Ulm. Drawing on ten-plus years across enterprise software, FinTech, telecom, and research, we design and build systems that hold under load and over the years — from the database to the deployment.

Services

What we build.

Five fields that interlock — from the service layer down to the metal.

  • Backend

    Backend Engineering

    Java and Spring Boot services, REST APIs to OpenAPI specs, PostgreSQL — built to perform and to last.

  • Full-stack

    Full-Stack & Mobile

    TypeScript with React/Next.js on the web, Flutter for cross-platform mobile.

  • Delivery

    DevOps & Cloud-Native Delivery

    Docker, multi-environment Kubernetes, GitLab CI/CD, and Nexus — delivery that stays reproducible.

  • Systems

    Infrastructure & Systems

    Linux administration, networking, VLAN/pfSense segmentation, and VoIP integration.

  • Agentic

    AI-Assisted Development

    Building and shipping with OpenAI Codex and Claude Code: planning, task decomposition, reusable skills — human-reviewed.

All services

Selected work

What we have delivered.

Anonymized case studies from real delivery — context, work, outcome.

  • Media

    Publication digitalization platform

    End-to-end delivery of a digital publishing platform; coordinated a seven-developer team.

    • Java 17
    • Spring Boot
    • Flutter
    • Kubernetes

  • FinTech

    Tax-data platform for a German provider

    High-reliability backend in a regulated domain; REST endpoints to OpenAPI specs with a TypeScript frontend.

    • Java 17
    • Spring Boot
    • OpenAPI
    • GitLab CI/CD

  • Research

    Scientific-device IT for a research institute

    Device management and stronger lab security through network isolation with VLAN and a pfSense firewall.

    • Python
    • Java
    • VLAN
    • pfSense

  • Telecom

    VoIP platform for a telecom

    Implemented and maintained VoIP systems (Sippy) with FreeSwitch integration and internal control APIs.

    • Sippy
    • FreeSwitch
    • Python
    • Django

More: IoT smart-home platform · ARM Linux from scratch.

See all work

Behind mka4tech

Led by a senior engineer with ten years in the field.

Java/Spring Boot backends, full-stack delivery, and shipping via GitLab CI/CD, Docker, and Kubernetes — paired with technical coordination. A background across Linux, networking, VoIP, and scientific IT gives a full view from infrastructure to application.

About us

Contact

Let's build your next system.

Available immediately, remote or hybrid, based in Ulm. Get in touch — we reply quickly.

hello@mka4tech.de Get in touch