Senior full-stack Developer - React

Open Assessment Technologies (OAT) is looking for a

Full Stack Developer

to help us deliver world-class, open-source learning and assessment solutions.

You’ll work across

frontend

and

backend

, building robust, user-friendly web applications from end to end — from designing and implementing features to ensuring top performance, accessibility, and scalability. This is an opportunity to contribute to impactful educational technology projects in an international, multicultural environment.

&##Build and customize frontend experiences using

JS (Svelte, ReactJS) ,

CSS

,

HTML5 . Implement backend developments and platform customizations in

Node.js

or

PHP

. Work with SQL and NoSQL databases. Ensure cross-browser/mobile compatibility, accessibility, and performance. Write, test, and refactor clean, maintainable code following best practices. Participate in SCRUM ceremonies and provide accurate estimations for change requests. Fluent in English with strong communication skills. Proven experience in

PHP

(current version) and frameworks like

Symfony, Slim, Laravel

. Solid experience with

SQL

and

NoSQL

databases. Knowledge of

AWS/GCP

is a plus. Strong Git skills and understanding of Agile concepts. Flexible working hours & 100% remote work. Social benefits and access to conferences, training, and certifications. If you’re passionate about building high-quality software that makes a real difference, we’d love to meet you.

&##