Senior Java Software Developer

We are looking for a Senior Java Backend Engineer to join our team and contribute to the development of mission-critical identification and biometric solutions used in large-scale national and international environments.
In this role, you will work on highly available, distributed systems supporting civil and criminal identification processes. You will collaborate with multidisciplinary and international teams to develop, integrate, and evolve advanced biometric and identity management platforms, ensuring high standards of security, reliability, and performance.
The role combines backend development, distributed systems engineering, and system integration expertise, with a strong focus on Java, microservices, and biometric identification technologies.
Responsibilities
Design, develop, and maintain backend applications using:
Java
Spring Boot
Design and implement:
Microservices
REST APIs
System integrations
Participate in the development and integration of civil and criminal identification solutions
Collaborate on biometric identification projects and integrations with:
AFIS
ABIS
Related identification platforms
Develop and support distributed and highly available systems
Ensure the:
Security
Performance
Reliability
Maintainability of production solutions
Troubleshoot and resolve complex technical issues in critical production environments
Collaborate with international teams and partners across multiple geographies
Contribute to the continuous improvement of:
Software architectures
Engineering processes
Development best practices
Requirements
Portuguese citizenship
3+ years of professional experience in Java development
Strong experience with:
Spring Boot
Spring Framework
Solid knowledge of:
Microservices architectures
REST API development
Experience with messaging technologies such as:
Kafka
RabbitMQ
Knowledge of:
SQL databases
NoSQL databases
Hands-on experience with:
Docker
Kubernetes
CI/CD pipelines
Experience working with:
Distributed systems
High-availability applications
Production-critical environments
Strong problem-solving and analytical skills
Ability to work autonomously in technically demanding environments
Experience collaborating in multidisciplinary and international teams
Fluency in English
Nice-to-have
Experience integrating systems within Public Administration environments, particularly:
Justice sector platforms
Knowledge of:
Biometric identification technologies
AFIS (Automated Fingerprint Identification Systems)
ABIS (Automated Biometric Identification Systems)
Familiarity with international standards and organizations such as:
NIST
INTERPOL
EURODAC
eu-LISA
Experience working on national identity, border control, law enforcement, or biometric solutions
Experience participating in international technology projects
Knowledge of secure system design and data protection principles
What We Offer
Hybrid working model, with the possibility of working from:
Lisbon
Leiria
Opportunity to join a Portuguese technology company with decades of experience in identification systems
Exposure to cutting-edge biometric and identification technologies used in real-world production environments
Participation in projects with national and international impact
Collaboration with teams and partners across:
Portugal
France
United States
India
High level of technical autonomy, challenging projects, and opportunities to influence the evolution of strategic platforms
If this sounds like you, share your CV with us and let's talk
Requirements
Benefits