Senior Java Developer

Lisbon, Portugal

Senior (4-6 Years)

Hybrid

English Required Portuguese Required Not Accepting Candidates Living Abroad

Payments and financial technology company operating across Portugal. The project involves the development and maintenance of scalable, high-availability Java applications for a payments-related platform, with a strong focus on performance, security and compliance.

What you will do

Analyze, develop and maintain Java applications following best practices and scalable, high-availability architectures.
Optimize application performance, including concurrency handling and SQL query tuning.
Conduct code reviews to ensure software quality.
Ensure the security and compliance of developed solutions.
Collaborate with functional, technical and QA teams.
Analyze and resolve complex issues through advanced debugging and log analysis.
Participate in technical decisions regarding technologies, architecture, frameworks and tools.

Location and work model

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

Java (from version 8) — advanced knowledge
SQL — advanced knowledge
REST
XML Web Services (preferably with JMS)
Software Architecture
Design Patterns
Asynchronous systems
English A2
Portuguese

Nice to have

Spring / Spring Boot
NoSQL databases
OAuth2, JWT, OpenID
Apache Pulsar
eCommerce and/or digital payments solutions

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!