Software Studio · Frankfurt am Main
Software with
Entwicklerherz
Enterprise architecture, cloud systems, and AI integration — for companies that think regulated and still want to move fast. All from one source.
Great software is built where regulation, real users and production load collide — not in a lab. Not in a workshop. Not in a slide deck.
Architecture is a decision, not a diagram.
Most systems don’t fail because of technology — they fail because of architecture decisions made too late or too vaguely. Cut early, scale later.
Legacy is not a dirty word.
Systems that have been running for years have proven they deliver value. The art is to evolve them — not to throw them away.
Tooling follows the problem, not the hype.
Kubernetes solves real problems. But not every problem. Technology decisions need context, not conference titles.
Partnerships
Embedded, not hired
Lead architecture and full-stack engineering within existing product teams — from cloud migration to AI integration, as part of the core.
Own Products
From enterprise to own product
15 years of experience in regulated systems flow into our own developer tools, AI agents, and SaaS products.
Projects
Selected Work
DZ BankKBM
An advisor and client portal that makes digital inventory the foundation of product consulting — Kafka Streams, Angular, OpenShift.
Event-driven · CQRS · Real-time portfolio reconciliation
Deutsche PostRentenservice
Backend architecture for processing pension requests and inquiries — Kafka Streams, Kubernetes, cloud-native.
2.3M cases/week · CDC Streams · Zero-downtime deploys
@Cron('*/30 * * * * *') async pulse() { const services = await this.registry.discover({ tag: 'entwicklerherz', status: 'active', }); for (const svc of services) { const beat = await this.health.check(svc.endpoint); await this.dashboard.emit({ service: svc.name, latency: beat.ms, status: beat.ok ? 'alive' : 'flatline', since: svc.deployedAt, }); } }
Journal
changelog --format=human
Reviewing AI Code Is a Different Job.
AI code looks clean. But whether it fits the system can't be seen in the diff — only when you know what to check against.
Decisions, Not Tickets.
Scrum measures progress in completed tasks. But what if the real bottleneck isn’t delivery — it’s the decisions your team isn’t making?
The Price of Speed
AI didn't take away the hard work. It took away the easy work and left only the hard part behind.
Software Will Soon Cost Nothing. And That’s What Will Get Expensive.
When everything is cheap to build, the most expensive thing will be deciding what not to build.
Ten Consultants or Two Who Know What They’re Doing.
The industry won’t need fewer consultants because there are fewer problems. It will need fewer because the right ones can solve more.
You’re Not Obsolete. But Your Monday Is.
The bridge from ‘classic’ to ‘AI’ isn’t one from ‘old’ to ‘new’ — it’s from writing code to making decisions.
Scrum Isn’t Broken. It Just Doesn’t Fit Anymore.
What happens to our processes when AI is no longer the new thing, but the normal thing?
LLM Chatbot from Architecture to Deployment
Streaming architecture with OpenAI — production-ready. Connecting an Angular frontend, Spring Boot backend, and the OpenAI API into your own chatbot.
Serverless PDF Pipeline on Cloud Run
Why Puppeteer on Cloud Run scales better than any classic PDF library. Angular, NestJS, and Google Cloud Run for pixel-perfect PDFs.
Studio
How we work
Entwicklerherz is a software studio from Frankfurt, founded by Elton Marku. Over 15 years of architecture in regulated systems — at DZ Bank, Deutsche Bahn, Deutsche Post. Small by design — because focus scales better than headcount. When a project needs specialist knowledge, we work with hand-picked partners.