Backend Developer (Kotlin/Spring Boot)

Kairos Digital Solutions; País Vasco; Remote; EUR 30,000 - 42,000; Full time

Benefits offered by this job

Remote-friendly

Career growth

Competitive salary

Collaborative culture

Job summary

WhatJobs Direct is looking for a motivated Junior Backend Developer with strong Java and Spring Boot skills to join our expanding technology team. You will design, develop, and deploy scalable backend services while collaborating with senior engineers in a remote-friendly setup.

Based in Bilbao, Basque Country, this role offers remote work from anywhere and a focus on robust software solutions, REST APIs, and database design.

Qualifications

• Bachelor's degree in CS, SE, or related technical discipline.
• Strong Java skills and OO principles.
• Experience with Spring Boot.
• Relational DBs (PostgreSQL/MySQL) and SQL.
• Version control with Git.
• Analytical and problem-solving abilities.
• Strong remote communication and collaboration.
• Ability to work independently in a remote setting.
• Experience with microservices is a plus.
• Understanding of Docker/containerization is beneficial.

Responsibilities

• Develop, test, and deploy backend services using Java and the Spring Boot framework.
• Design and implement RESTful APIs for various applications.
• Write clean, maintainable, and efficient code adhering to best practices.
• Collaborate with frontend developers to integrate user-facing elements with server-side logic.
• Participate in code reviews to ensure code quality and share knowledge.
• Troubleshoot, debug, and resolve backend issues.
• Optimize applications for speed, scalability, and performance.
• Contribute to database design and management.
• Stay updated on emerging backend technologies and development practices.

Skills

Java

Spring Boot

REST API design

SQL

Git

Remote collaboration

Analytical thinking

Team communication

Education

Bachelor's degree in Computer Science or related technical discipline

Tools

Docker

PostgreSQL

MySQL

Job description

Our client, WhatJobs Direct, is searching for a motivated Junior Backend Developer with strong Java and Spring Boot skills to join their expanding technology team. This position is ideal for individuals early in their careers who are eager to develop scalable and high-performance server-side applications. You will collaborate closely with senior engineers, contributing to the design, development, and deployment of backend services. This role is offered with the flexibility of remote work, allowing you to contribute effectively from anywhere. We are looking for candidates who possess a solid understanding of Java development principles and a passion for building robust software solutions. Join a team dedicated to innovation and technical excellence in Bilbao, Basque Country , or remotely.

About the Role

Our client, WhatJobs Direct, is searching for a motivated Junior Backend Developer with strong Java and Spring Boot skills to join their expanding technology team. This position is ideal for individuals early in their careers who are eager to develop scalable and high-performance server-side applications. You will collaborate closely with senior engineers, contributing to the design, development, and deployment of backend services. This role is offered with the flexibility of remote work, allowing you to contribute effectively from anywhere. We are looking for candidates who possess a solid understanding of Java development principles and a passion for building robust software solutions. Join a team dedicated to innovation and technical excellence in Bilbao, Basque Country , or remotely.

Key Responsibilities

• Develop, test, and deploy backend services using Java and the Spring Boot framework.
• Design and implement RESTful APIs for various applications.
• Write clean, maintainable, and efficient code adhering to best practices.
• Collaborate with frontend developers to integrate user‑facing elements with server‑side logic.
• Participate in code reviews to ensure code quality and share knowledge.
• Troubleshoot, debug, and resolve backend issues.
• Optimize applications for speed, scalability, and performance.
• Contribute to database design and management.
• Stay updated on emerging backend technologies and development practices.

Requirements

• Bachelor's degree in Computer Science, Software Engineering, or a related technical discipline.
• Solid understanding of Java programming language and object‑oriented principles.
• Experience with the Spring Boot framework.
• Familiarity with relational databases (e.g., PostgreSQL, MySQL) and SQL.
• Knowledge of version control systems, particularly Git.
• Strong analytical and problem‑solving skills.
• Good communication and interpersonal skills for remote collaboration.
• Ability to work independently and manage time effectively in a remote setting.
• Experience with microservices architecture is a plus.
• Understanding of containerization technologies like Docker is beneficial.

Benefits

This remote role offers a competitive salary and a comprehensive benefits package. Gain valuable hands‑on experience in backend development with a leading technology stack. Opportunities for professional growth and career advancement are extensive. Our client provides a supportive and collaborative work environment that encourages continuous learning. Join a dynamic team and contribute to impactful projects. This position offers the flexibility to work from anywhere while being part of an innovative company culture.