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About

A technology consultancy that writes the code

We are a senior-led technology consultancy based in the Rhine-Main region. Instead of extra project layers, you get direct access to deep engineering experience — from the first assessment to production code.
Portrait of the founder: Cemsu Kagan Koc

Cemsu Kagan Koc

Founder & Senior Software Engineer

Founder

Hands-on engineering with enterprise experience

The company was founded by a senior software engineer with extensive hands-on experience in large enterprise projects — particularly in banking, payments and fintech.

The focus is on frontend architecture with React, TypeScript and Next.js, and on mobile applications with React Native. This is complemented by backend experience with Java, Spring Boot, Kafka and relational databases. That full-stack understanding makes it possible to think about systems as a whole rather than individual screens.

Work on mobile banking, identity verification (KYC), payments and reporting has built a strong sense for quality, security and regulatory constraints — and for the reality of large, long-lived codebases.

We take a sober view of AI and automation: they are tools to be used when they deliver clear value and integrate cleanly with existing systems.

Expertise

Areas of expertise

Specialized in the frontend, with an understanding of the whole system behind it.

  • Frontend architecture

    React, TypeScript and Next.js; state management with Redux Toolkit, RTK Query and Zustand; design systems with Storybook; monorepos with Nx and Turborepo; microfrontend architectures.

  • Mobile development

    React Native with native iOS and Android integrations, camera and OCR flows, ML Kit, NFC and Firebase — with experience from mobile banking applications.

  • Backend & integration

    Java 17, Spring Boot, Spring Cloud, REST APIs, Kafka and Redis, plus PostgreSQL, Oracle and SQL Server. Containerized operations with Docker and Kubernetes.

  • Quality & testing

    Test strategies with Jest, Cypress, Playwright, MSW and Chromatic. Component and integration testing, and clear frontend quality standards.

Industry experience

At home in banking and fintech

Domain knowledge that makes a difference in regulated environments.

  • Mobile banking
  • KYC & identity verification
  • Payments
  • SEPA
  • SWIFT
  • TARGET2
  • FX trading
  • Reporting systems
  • Large enterprise applications

Principles

How we work

  • Understand first, then build

    We clarify the real problem and the constraints before any technology decisions are made.

  • Honest assessments

    If a project doesn't make economic sense, or a simpler solution will do, we say so.

  • Quality by default

    Typing, tests, code reviews and documentation are part of the work — not a follow-up project.

  • Knowledge stays with you

    Understandable architecture and clean handovers ensure your team can evolve the software on its own.

Clear expectations

What you won't get from us

  • Sales conversations without technical substance
  • A complete rebuild when targeted modernization will do
  • AI projects whose value nobody can explain
  • Vague estimates and billing surprises

Location

Based in Rhine-Main, working across Germany

We are based in the Frankfurt am Main area. On-site meetings in the Rhine-Main region are easy to arrange; projects elsewhere in Germany are supported remotely with regular check-ins.

Frankfurt / Rhine-Main

Let's get to know each other.

In the free initial consultation, you talk directly to the engineer who would deliver your project.

Discuss your project

Free initial consultation — no obligation.

Prefer email? kontakt@strebia.de