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# Fullstack Developer

- **Company:** Postaladdress
- **Location:** Spain
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, C (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Software Applications, HTML5, User Authentication, Automation of Tests, Unit Testing, C++ (Programming Language), Cascading Style Sheets (CSS), Databases, Data Integration, Software Debugging, Linux, MongoDB, Node.Js, Preprocessor, Web Applications, Git, Templating, Front End Software Development, Asynchronous Programming, Network Server, Software Version Control
- **Published:** September 5, 2026
- **Apply:** https://startup.jobs/fullstack-developer-pirsonal-3844166

## About the Role

Team player.

 - Leadership skills (we want to see you growing with us).
 - Strong proficiency in JavaScript, C, C++.
 - Git master.
 - Proved knowledge of Node.js and frameworks available for it.
 - Linux domain.
 - Understanding the nature of asynchronous programming and its quirks and workarounds.
 - Good understanding of server-side templating languages.
 - Good understanding of server-side CSS preprocessors.
 - Basic understanding of front-end technologies (HTML5, CSS3).
 - Understanding accessibility and security compliance.
 - User authentication and authorization between multiple systems, servers, and environments.
 - Integration of multiple data sources and databases into one system.
 - Understanding fundamental design principles behind a scalable application.
 - Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform.
 - Creating database schemas that represent and support business processes.
 - Implementing automated testing platforms and unit tests.
 - Proficient understanding of code versioning tools, such as Git.
 - Bachelor's degree in computer software or similar.
 - Mid-Hight speed internet connection.
 - Personal Computer.
 - Great work ethic.
 - Fast learner.
 - Great English (Spoken and Written).

## Description

Your primary focus will be the development of our web applications, APIs (REST) and of all server-side logic, definition, and maintenance of the central database (MongoDB). You'll also be responsible for ensuring high performance and responsiveness to requests from the front-end. You will integrate the front-end elements built by your co-workers into the application, updating our developer platform and tools. An understanding of front-end technologies is necessary as well., Integration of user-facing elements developed by front-end developers with server-side logic.

 - Writing reusable, testable, and efficient code.
 - Design and implementation of low-latency, high-availability, and performant applications.
 - Implementation of security and data protection.
 - Integration of data storage solutions.
 - Integration of third-party media APIs (audio, video, image).
 - Integration of data sources.
 - New product suggestions (product-owner profile).
 - Learning new technologies.


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