Devoteam
Telecom Sector | Java Backend Developer
Skills
1 month ago
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Important information
Contract type:
Permanent
Location:
Lisbon, Portugal
Work mode:
Onsite
Published on:
17 September 2026
What they need
At Devoteam, we believe that technology with strong human values can actively drive change for the better. Discover how Tech for People unlocks the future, creating a positive impact on the people and the world around us. We are a global leading player in Digital Transformation for leading organizations across EMEA, with revenue of €1B. We believe in transforming technology to create value for our clients, partners and employees in a world where technology is developed for people. We are proud of the culture we have built together. We are proud of our people at the service of technology. We are proud of our diverse environment. Because we are #TechforPeople. Join our multidisciplinary team of Cloud experts, Designers, Business consultants, Security experts, Engineers, Developers, and other extraordinary talents, spread across more than 20 EMEA countries. Become one of our +10.000 tech and business leaders on cloud, data, and cyber security. Let’s fuse creativity with technology together and build innovative solutions that actively change things for the better.
Job Description
- Develop and maintain scalable, efficient, and high-performance backend applications using Java and Spring Boot;
- Design, implement, and maintain RESTful APIs to support IoT platforms and web applications;
- Work with large volumes of data related to IoT SIM connectivity, monitoring, and management;
- Integrate backend services with MongoDB and Elasticsearch;
- Collaborate with frontend teams to integrate server-side logic with web applications (React.js knowledge is a plus);
- Optimize application performance, scalability, and reliability;
- Participate in code reviews and contribute to continuous improvement of development standards and best practices;
- Troubleshoot, debug, and resolve complex technical issues;
- Collaborate with international teams in an English-speaking environment.
Qualifications
- Bachelor’s degree in Computer Science, Software Engineering, or a related field;
- 5+ years of experience in backend development using Java;
- Strong experience with Spring / Spring Boot;
- Proven experience designing and consuming RESTful APIs;
- Solid experience with MongoDB and Elasticsearch;
- Experience working with large-scale or data-intensive systems;
- Familiarity with React.js or frontend technologies (nice to have);
- Experience with Git and collaborative development workflows;
- Experience in Agile environments;
- Fluency in English (spoken and written);
- Strong problem-solving skills and ability to work autonomously in a remote setup.
Additional Information The Devoteam Group works for equal opportunities, promoting its employees based on merit and actively fights against all forms of discrimination. We are convinced that diversity contributes to the creativity, dynamism and excellence of our organization. All of our vacancies are open to people with disabilities.
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