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JavaScript developers for modern web applications

Koodin delivers experienced JavaScript developers who quickly understand how your application works, take responsibility, and contribute to software that remains reliable, fast, and easily maintainable.

Senior JavaScript expertise when you need it

Experienced JavaScript developers for complex applications, digital platforms, and technical challenges.

Using JavaScript is easy. Building a large application that remains clear and maintainable even after years of further development is a lot harder. You are looking for someone who quickly understands existing code. Someone who can make decisions about architecture, components, APIs, performance, and testing. And who understands how JavaScript works together with frameworks, backend systems, and cloud environments. That is the type of JavaScript developer Koodin focuses on.

Our JavaScript specialists have experience with, among other things:

JavaScript
TypeScript
React
Next.js
Node.js
NestJS
REST APIs and GraphQL
HTML and CSS

Jest and Vitest
Cypress and Playwright
npm, pnpm and Yarn
Docker and Kubernetes
Azure, AWS and Google Cloud
CI/CD and Git
Microservices and serverless

We look beyond just a list of technologies. A developer's experience must align with your architecture, development process, and organization.

More about how we can help

Cases

A selection of our projects

JavaScript

A selection of our projects

Schiphol

Schiphol worked with several digital platforms that did not align well technically and visually. Koodin helped with the development of a central design system in React, through which accessible, reusable components, consistent interfaces, and a uniform user experience across multiple platforms were realized.

How we contribute to your success

Koodin provides senior JavaScript developers who build and further develop modern applications.

Frontend development

JavaScript forms the basis of modern web applications. Our developers build with React and Next.js, among others, and contribute ideas on component structure, state management, API integrations, performance, and testing.

Backend development with Node.js

JavaScript is also widely used on the backend. Our developers build APIs, services, and integrations using Node.js and ensure a clear structure between frontend, backend, and external systems.

Full-stack applications

JavaScript makes it possible to work on both frontend and backend within a single technology stack. Our developers understand both sides and oversee how the user interface, APIs, services, and data work together.

JavaScript in cloud solutions

Modern development doesn't stop with code. Our developers also understand what happens next: building, testing, deploying, monitoring, and managing. They work with Azure, AWS and Google Cloud, Docker, Kubernetes, and CI/CD.

Our expertise

Meet one of our Java specialists

JavaScript

specialisten

Anton Pavlik

Senior Java Developer

Jurre Berkhout

Senior Frontend Developer

Robbert Hagendoorn

Senior Fullstack Developer

Senny Kalidien

Senior Frontend Developer

Tuna Töre

Senior Java Developer

How we contribute to your success

Koodin provides senior Java developers for organizations where software must be reliable, scalable, and future-proof. People who are not only skilled developers, but also understand what is needed to successfully bring and keep software in production.

JavaScript

Koodin provides senior Java developers for organizations where software must be reliable, scalable, and future-proof. People who are not only skilled developers, but also understand what is needed to successfully bring and keep software in production.

New applications

A new backend, API layer, or business-critical application requires more than just Java knowledge. Our developers assist with architecture, frameworks, integrations, databases, and deployment. They help build the solution and ensure it can be deployed to production in a manageable way.

Modernization

Many organizations have relied on Java systems for years. Replacing them is often costly and risky. Our developers modernize step-by-step: with upgrades, modularization, APIs, and detached services. We keep what works well and renew in a targeted way where it adds value.

Microservices and event-driven architectures

When applications grow and systems need to collaborate more, a microservices or event-driven architecture can help. Our Java developers are familiar with REST, Kafka, and distributed landscapes. Microservices are not an end in themselves: sometimes a modular monolith is a better fit. Senior developers recognize the difference and make conscious choices.

Java development in cloud solutions

Modern Java development doesn't stop at code. Our developers also understand what happens next: building, testing, deploying, monitoring, and managing. They work with cloud platforms like Azure, AWS, and Google Cloud, plus Docker, Kubernetes, and CI/CD. This is how they strengthen organizations where development and operations come together.

Curious if we can help you?

Please contact Maarten

He knows everything about Koodin and loves to think along with you.

Email Maarten

or call:

+31 6 52715346

B. Amsterdam (B.2)

John M. Keynesplein 12-46

1066 EP Amsterdam

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