Backend Developer (Java / Spring Boot) em Lisboa, Portugal

At IRIUM, we want you to always chase your dreams! Here, get ready to achieve your goals while enjoying the journey.

We are currently looking for a Backend Developer (Java / Spring Boot) to join an innovative technology project in Lisbon.

Required Competencies

• Minimum 5 years of professional experience in backend software development.

• Strong hands-on experience with Java 17 or higher, Spring Boot and Hibernate .

• Experience designing, developing and integrating REST APIs .

• Solid knowledge of relational and NoSQL databases, including Oracle, PostgreSQL and MongoDB .

• Experience with Git and version control best practices.

• Knowledge of messaging systems, particularly Apache Kafka .

• Experience with Docker and Kubernetes .

• Familiarity with Scrum and Agile methodologies .

• Experience developing, maintaining and improving enterprise applications.

• Ability to produce technical documentation and apply software engineering best practices.

• Experience mentoring and supporting junior developers, assigning tasks and reviewing deliverables.

• Strong communication, analytical thinking, autonomy, proactivity and teamwork skills.

• Interest in using AI-assisted development tools to improve software engineering processes.

Preferred Competencies

• Previous experience in the banking sector .

• Knowledge of Document Management Systems, OCR and Generative AI (GenAI) .

• Experience with Cloud platforms, particularly Microsoft Azure or AWS .

Main Responsibilities

• Develop, maintain and optimize scalable backend applications.

• Identify and implement software development best practices and technical improvements.

• Adopt AI-powered development tools to improve productivity and code quality.

• Produce and maintain technical documentation.

• Support junior developers through task specification, technical guidance and deliverable validation.

• Collaborate with production support teams, ensuring effective knowledge transfer.

• Work closely with Product Owners to understand business requirements and deliver technical solutions.

• Contribute to code quality, application reliability and continuous improvement.

Working Conditions

Location: Lisbon, Portugal

Working Model: Hybrid — 2 days per week on-site and 3 days remote.

Availability: Within 30 days, ideally sooner.

Salary Range: €2,000–€2,300 gross per month.

What Do We Offer?

• An innovative and growing company with plenty of opportunities for professional development.

• Compensation according to your experience and performance.

• Access to flexible compensation and private health insurance as a social benefit.

• Unlimited access to technological training in self-learning mode.

About IRIUM

IRIUM is a company made up of dynamic and proactive professionals. Our values are responsibility and commitment to quality work. This is the spirit we look for at IRIUM, regardless of your age.

If you identify with these values, this is your company!

Together, we can build the future. Shall we talk?

Send your application to: [email protected]

At IRIUM, we promote a world without stereotypes or limitations and believe in equality for all. These principles are reflected in our Equality Plan and Code of Ethics, ensuring equal treatment and opportunities regardless of any personal, physical or social condition.