INTERNSHIP DETAILS

Software Development Trainee

CompanyNokia
LocationLisbon
Work ModeOn Site
PostedOctober 29, 2026
Internship Information
Core Responsibilities
The trainee will develop applications using Java 17 and above while participating in the full software development cycle including analysis, design, and testing. Responsibilities also include writing various types of tests, reviewing peer code, and utilizing AI techniques under senior supervision.
Internship Type
full time
Company Size
1913
Visa Sponsorship
No
Language
English
Working Hours
40 hours
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About The Company
Infinera is now part of Nokia. Infinera is revolutionizing telecommunications networks with innovative, industry-leading connectivity solutions. Our offerings include high-end subcomponent technology, systems for network infrastructure, automation software, advanced optical compound semiconductor manufacturing, & professional services. As a global supplier, we empower mobile service providers, internet content providers, cloud operators, submarine operators, governments & enterprises to scale network bandwidth, boost service innovation, and automate network operations. We are committed to continuously expanding and enhancing our world-class offerings to meet the changing needs of our customers. Our connectivity solutions are powered by the world’s best embedded & pluggable optical engines, which are designed, developed & manufactured in Infinera’s U.S.-based optical semiconductor fabrication center and are application-optimized for edge, metro, long-haul, and submarine transport networks. Our agile, open, compact & modular networking platforms enable network operators to rapidly and easily take advantage of best-in-class technology. Our software automation solutions optimize traffic flows and automate workloads to enable network operators to cost-effectively deliver secure bandwidth to their customers where and when needed. With these solutions, our goal is to create a connected world with unlimited bandwidth for everyone – everywhere, always, and instantly. What Inspires Us? A connected world with unlimited bandwidth for everyone – everywhere, always & instantly. What Motivates Us? Delivering innovative and impactful coherent optical technologies and open optical solutions that unlock new value for our customers. What Drives Us? To be a valued investment for our shareholders’ money, our customers’ CapEx and our employees’ time by delivering an unrivaled customer experience from an inclusive culture of innovation for our customers.
About the Role

This job requires a knowledge of software engineering practices and design patterns with focus on modern Java and web development applications. These applications run on containerized environments, Docker and K8s.

As a trainee, you will join a cross-functional development team working on software for optical network management systems. You will have the chance to be involved in different stages of the development cycle, including analysis, design, implementation and testing of new software features, using AI development life cycle methodologies and techniques.
You will be encouraged to share your ideas, ask questions and contribute to team discussions, helping us continuously improve our methods, software, and overall team experience.

The team strives to write clean, decoupled, and testable code with a clear separation of components and responsibilities. This will happen in an international environment, with team members all around the world.

 

Position: Internship
Duration: 12 months
Start date (tentative): October, 2026
Location: Hybrid in Carnaxide, Portugal
Education Recommendations: Currently a candidate finishing their BSc or MSc degree in Telecommunications, Computer Science, Electrical Engineering, or a related field with an accredited school

Responsibilities

  • Develop applications in Java 17 and above;
  • Write unit-tests, end-to-end tests and stress testing;
  • Develop code in accordance with the system design and coding standards with senior supervision;
  • Review the code of peer developers;
  • Use AI daily.

Qualifications

You have:

  • MsC degree in Computer Science, Telecommunications or related field;
  • Fluent in English, spoken and written;
  • Knowledge in Java and OO. Willingness to work with and learn modern Java, asynchronous programming and unit-testing.

It would be nice if you also had:

  • Experience in using AI for SW engineering
  • Good communication skills including ability to share knowledge;
  • Strong troubleshooting and problem-solving abilities;
  • Knowledge of any of the following will be a plus: git, maven, Gradle, Jenkings ;
  • Knowledge of Optical Telecommunication Technologies.

Advancing connectivity to secure a brighter world.

Nokia is a global leader in connectivity for the AI era. With expertise across fixed, mobile and transport networks, powered by the innovation of Nokia Bell Labs, we’re advancing connectivity to secure a brighter world. 



Our recruitment process

We act inclusively and respect the uniqueness of people. Our employment decisions are made regardless of race, color, national or ethnic origin, religion, gender, sexual orientation, gender identity or expression, age, marital status, disability, protected veteran status or other characteristics protected by law. We are committed to a culture of inclusion built upon our core value of respect.

If you’re interested in this role but don’t meet every listed requirement, we still encourage you to apply. Unique backgrounds, perspectives, and experiences enrich our teams, and you may be just the right candidate for this or another opportunity.

The length of the recruitment process may vary depending on the specific role's requirements. We strive to ensure a smooth and inclusive experience for all candidates. Discover more about the recruitment process at Nokia. 


Some of our benefits for trainees in Portugal:
  • Flexible and hybrid working schemes
  • Meal allowance to support daily needs
  • Well-being programs to support your mental and physical health
  • Opportunities to join and receive support from Nokia Employee Resource Groups (NERGs)
  • Employee Growth Solutions to support your personalized career & skills development
  • Diverse pool of Coaches & Mentors to whom you have easy access
  • A learning environment which promotes personal growth and professional development - for your role and beyond
Key Skills
JavaSoftware engineeringDesign patternsDockerKubernetesUnit testingEnd-to-end testingStress testingAsynchronous programmingGitMavenGradleJenkinsOptical telecommunication technologiesAI development life cycleTroubleshooting
Categories
SoftwareTechnologyEngineering
Benefits
Flexible and hybrid working schemesMeal allowanceWell-being programsEmployee Resource GroupsEmployee Growth SolutionsCoaching and mentoringLearning environment
Software Development Trainee - InternshipsHQ