Fullstack Developer- International Project

ALTEN Delivery Centre Spain; España; Remote; EUR 42,000 - 64,000; Full time

Benefits offered by this job

Long-term contract

International project

Remote work option

Team integration

Travel opportunities

Training & development

Benefits & compensation

Job summary

ALTEN Delivery Centre Spain is seeking a qualified Fullstack Developer to join an international team and collaborate with engineers worldwide. The role covers frontend in React and backend in Rust/Node.js, API integration, WebSockets, and real-time data visualisations with responsive design.

You'll contribute to secure, scalable solutions with OAuth2/JWT concepts, use Git, Docker, and CI/CD, and participate in training and development. English proficiency (B2+) is required.

Qualifications

• Experience in both frontend and backend development (e.g., React + Rust/Node.js).
• Knowledge of API integration and security principles is a plus.
• Familiarity with RESTful APIs, WebSockets, and CI/CD tooling is beneficial.

Responsibilities

• Collaborate on backend services with Rust and frontend integration.
• Connect frontend and backend via APIs and WebSockets, including device interfaces.
• Implement real-time data visualisations with responsive design and state management.
• Develop security features (OAuth2/JWT) and secure communications.
• Apply Security-by-Design and optimize data access with SQL/NoSQL.

Skills

Frontend & Backend

API Integration

Security by Design

RESTful APIs

Tools

Git

Docker

Postman

Job description

Are you looking for the next challenge in your career?

Would you like to be part of an exciting highly qualified team of professionals in an international environment?

We are currently looking for a qualified Fullstack Developer

Join an international division and work alongside some of the most talented engineers and technicians from all over the world.

• Long-term secure contract.
• International Project with top technologies
• Possibility of working remotely with a flexible schedule.
• Integration in a highly qualified team of professionals.
• Travel abroad with your project.
• Specialized training and continuous professional development.
• Social benefits and flexible compensation plan.

Responsibilities

• Alongside backend services in Rust.
• Integrate the frontend and backend through RESTful APIs and WebSockets, including interfaces to devices.
• Implement real-time data visualisations, responsive design and state management.
• Develop security features for authentication and authorization, using mechanisms such as OAuth2 or JWT.
• Apply Security-by-Design principles and secure communication protocols.
• Implement data access using SQL or NoSQL databases and optimize real-time performance for individual and
• Test APIs using Postman and frontend functionality using Jest.
• Use Git, Docker and CI/CD pipelines to support reliable delivery and maintainability.

Requirements

• Frontend & Backend: Experience in both areas (e.g., React + Rust/Node.js).
• Security: Knowledge of Security-by-Design and secure communication protocols.
• API Integration: Experience connecting frontend and backend via APIs.
• Tools: Git, Docker, Postman (for API testing).

We positively value all work or study experience abroad.

All positions require a high level of English (at least B2)