Senior Java Developer

Lisbon, Portugal

Specialist (5+ Years)

Hybrid

English Required Portuguese Required Not Accepting Candidates Living Abroad

The team builds and maintains backend services for a payments-related platform, focusing on reliability, performance, and integration with other systems.

What you will do

Develop and maintain backend services using Java and related frameworks.
Design and implement REST APIs for integration with other platform components.
Work with messaging systems such as Kafka to support event-driven architectures.
Implement and optimize data persistence using relational databases.
Collaborate with the team on application deployment through CI/CD pipelines.
Participate in architecture discussions and contribute to technical decisions.
Troubleshoot and resolve issues across the application stack.

Location and work model

Hybrid (3 days/week in the office, Lisboa)

Java — 8+
Wildfly
Kafka
Spring
JEE
JPA
PostgreSQL
Oracle
REST API
CI/CD
English B2
Portuguese

Nice to have

Strong written English
Software architecture knowledge
JIRA
Confluence
Zabbix
Grafana

We connect IT professionals with projects that match their skills, professional experience, and goals, then we offer a career progression program, delivered by in-house specialists - our People Experience Partners - to guide them through our journey with us.

What we offer:

A project that matches your skills and ambitions, as well as your preferences for working policies and culture.
A competitive salary with awesome benefits and opportunities to leverage your knowledge and network to earn additional income.
An empowering and respectful work culture enriched with social and learning events.
A People Experience Partner specially assigned to you - your go-to career guide, responsible for supporting your growth, facilitating training, and ensuring your work-life balance at KWAN.

At KWAN, they make sure that I feel comfortable with the client I’m working for and that what I’m doing aligns with my career aspirations.

Luis Caldeira, DevOps @ KWAN

At KWAN, I’m given the space to be myself and do what I love. I have control over the projects I work on, as well as the direction of my career.

Pedro Fonseca, Front End Developer @ KWAN

I see my People Experience Partner as someone who is always available to provide me with motivation and constant feedback, which helps me be sure that I am in the right place.

Josimar dos Reis, Software Developer @ KWAN

I know that I’ve contributed to the growth of a company that truly values a “people first culture”, because my ideas, experiences, and individuality were always appreciated.

João Nascimento, Software Developer (KWAN Alumni)

My two years at KWAN were an incredible experience! From the start, I was welcomed into a warm and collaborative environment where I felt truly supported.

Laís Ortiz, Software Developer @ (KWAN Alumni)

Grab this opportunity, apply now!