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KORYDEV
Dev studio · Freelance Tech Lead

Reliable code,shipped to production.

KORYDEV takes startups and companies from architecture to release. I design, build and publish your mobile and web apps with the standards of a Tech Lead.

Start a projectView the apps
10+
years of experience
iOS · Android
shipped to the stores
100%
independent, one point of contact
Services

What KORYDEV builds

End-to-end support, from the first architecture sketch to the listing on the App Store and Google Play.

Mobile apps

Cross-platform apps (iOS & Android) in React Native, built for performance and shipped to the stores.

  • React Native
  • TypeScript
  • App Store & Play Store release

Web apps & APIs

React interfaces and robust Java back-ends: from SaaS products to internal tools, on a maintainable codebase.

  • React / Next.js
  • Java · Spring Boot
  • PostgreSQL · REST API

Architecture & Tech Lead

Technical scoping, stack decisions, code review and levelling up your teams.

  • Audit & scoping
  • Code review & CI/CD
  • Team mentoring

Cloud & release

Deployment, observability and hardening: your app runs, is monitored and updates with confidence.

  • CI/CD & infra as code
  • AWS / GCP / Vercel
  • Monitoring & alerting
Apps

Apps published on the stores

The products built and published by KORYDEV, available on Android and iOS.

All applications
Currency Calc — icôneAvailable

Currency Calc

Travel

The calculator that converts your result from one currency to another.

Details & support
About

A Tech Lead, not an agency

KORYDEV is a company (SASU) run by [YOUR NAME], a freelance Tech Lead. The idea is simple: you talk directly to the person who designs and writes the code, with no sales layer in between.

After more than ten years building products and leading engineering teams, I now help clients turn an idea into an app that actually ships, on the web and on the mobile stores.

KD
Christian Cougourdan
Founder & Tech Lead — KORYDEV (SASU)

How I work

  • Technical rigour
    Tested, documented code built to last, not just to demo.
  • Transparency
    One point of contact, regular check-ins and decisions explained.
  • Production-first
    The real goal: a deployed, stable, maintainable app.

Preferred stack

  • TypeScript
  • React
  • Next.js
  • React Native
  • Node.js
  • Java
  • Spring Boot
  • PostgreSQL
  • Docker
  • CI/CD
Quality & maintainability

Code built to last

An app is an asset you keep for years. I write it so it stays easy to evolve, pick up and hand over, with no hidden debt and no black box.

  • Tested

    Automated tests on the critical logic: regressions show up before production, not after.

  • Typed & documented

    Strict TypeScript, explicit conventions and useful documentation. The code explains itself and can be picked up without guessing.

  • Reviewed & continuously integrated

    Code review, linting and CI/CD: every change is checked and deployable in a reproducible way.

  • Evolvable architecture

    Simple, decoupled choices designed for adding features, without locking you into a technology.

You stay the owner

Readable, versioned, documented code: at any point you or another team can take over the project. No lock-in.

Method

From idea to store, in four steps

A clear path to stay in control of budget and timeline.

  1. 01

    Scoping

    We clarify the need, the users and the scope. You leave with an estimate and a target architecture.

  2. 02

    Design

    Technical architecture, stack choices and a breakdown into shippable, testable increments.

  3. 03

    Development

    Short iterations, regular demos and continuously reviewed code. You watch the product take shape.

  4. 04

    Release

    Go-live, submission to the App Store and Google Play, then monitoring and maintenance.

Got an app idea? Let's bring it to life.

From scoping to store release, KORYDEV is with you at every step.

Start a project