Java Software Engineer

ADENTIS – Senior Software Developer

With just over 7 years of experience in the Portuguese market, ADENTIS shares its DNA with more than 200 workers and positions its offer according to 3 lines of service:

• Strategy (Outsourcing, Ne
  Xel, Team as a Service, Tech Academies)
• Nearshore

ADENTIS focuses on PEOPLE. This is our emotional salary: great work‑life balance, very flexible routines, health benefits, team building, 300+ discount protocols, continuous professional development, regular feedback, and a comprehensive career plan.

Responsibilities

• Participate in project development with a strong focus on Spring Boot.
• Act as a liaison between stakeholders to align expectations and negotiate deadlines.
• Keep the project lead aware of risks, blockers and mitigation efforts.
• Guarantee high‑quality deliverables on schedule and aligned with client guidelines.
• Make sound architectural decisions for robust and scalable solutions.

• Bachelor’s or Master’s in Computer Science or related field.
• Proven expertise in Spring Boot, microservices, database integration and RESTful API development.
• Solid knowledge of architecture patterns, Dev
  Ops/CI‑CD, Git, testing, build tooling, observability and messaging.
• Excellent communication skills, resilient and goal‑oriented.
• Technology‑driven and motivated by challenges.
• Proficiency in English; EU citizenship or Portuguese residency required.
• Availability to work in the office once or twice per week.

Nice to Have

• Cloud experience (Azure, AWS, GCP).

Devoteam – Java/Spring Senior Developer

Design and develop high‑quality and secure Java/Spring applications. Lead code reviews, mentor juniors, enforce best practices, optimize performance, embed security throughout the lifecycle, and contribute to strategic planning.

Qualifications

• Degree in Computer Science or equivalent.
• Strong expertise in Java and Spring ecosystem.
• Experience with microservices and relational databases.
• Proficiency in French is required; English is a must.
• Experience with CI/CD pipelines and automated deployments.

Devoteam Group works for equal opportunities and promotes employees based on merit, actively fighting discrimination. All vacancies are open to people with disabilities.

Java/Spark Developer – Mo
Ongy

We are looking for a Java/Spark Developer to join our team in Lisbon, focusing on data processing, cloud native solutions, and containerized environments.

Key Responsibilities

• Design, develop, and optimize Java/J2EE applications.
• Build and maintain Apache Spark pipelines.
• Use Docker & Kubernetes for cloud‑native applications.
• Develop CI/CD pipelines with modern tools.
• Collaborate with cross‑functional teams for scalable data solutions.

Must‑Have Skills

• 3+ years of Spotify Spark experience.
• Strong knowledge of Java/J2EE and Spring.
• Experience with relational databases and SQL.
• Docker, Kubernetes, and CI/CD tooling (Maven, Git, Argo
  CD).
• Proficiency in English; French is a plus.
• Availability for office presence once or twice a week.

Senior Java Developer – Brussels (EU only)

Senior Java Developer for European Institutions in Brussels. European candidates only; relocation and work permit required.

Tasks and Responsibilities

• Design, develop and maintain components.
• Analysis of integration and data models.
• Coordinate technical architecture and testing.
• Assist with documentation and deployment.

Profile

• 5–15 years of Java experience.
• Strong knowledge of Spring and Hibernate.
• Fluent in English; EU passport required.
• Travel not required for interviews.

Lead Java/React. js Software Developer – Agile
Engine

Create interfaces to backend systems using Java and Spring
Boot, configure user interfaces, support system integration tests, and work independently on projects.

Must Haves

• Degree in Computer Science or similar.
• Experience with API design, XML/JSON.
• Database experience (My
  SQL).
• Knowledge of Docker, Kubernetes, and CI/CD pipelines.
• Fluency in English; additional languages a plus.

Embedded Software Engineer – FOSSA Systems

Design, develop and test Io
T nodes and modules in Lisbon. Microcontroller (ESP32) programming, embedded software libraries, real‑time operating systems (Free
RTOS) and Git proficiency required.

Responsibilities

• Develop and program microcontrollers.
• Implement embedded software libraries.
• Define state machines and flow diagrams.
• Validate and test firmware.
• Use Free
  RTOS and Git
  Hub.

Profile

• Graduated in telecommunications, engineering, or similar.
• 1–3 years of related experience.
• Experience with C/C++, Python.
• English proficiency at professional level.
• Full professional proficiency in English.

Junior Software Engineer – EID

Software development for embedded systems, shared services, and GUI applications across Windows, Linux, and Android.

Requirements

• Higher education in Computer Engineering.
• Experience with C, C++, . NET/C#, and Java.
• Knowledge of MS Visual Studio and Eclipse.
• Fluent in Portuguese and English.

Senior Software Engineer – Core Banking

Reporting to the Senior Director, the Senior Software Engineer will contribute solution architecture for core banking implementations.

Responsibilities

• Design and develop solution architecture for core banking.
• Architect product extensibility and integrations.
• Ensure clean, testable, secure, and performant coding.
• Use relational databases, messaging, and J2EE servers.

Required Experience

• 5–8 years of architecture experience in core banking.
• Expertise in Java Spring Boot Microservices.
• Strong knowledge of relational databases and Liquibase.
• Experience with messaging technologies (JMS, Kafka).
• Proficiency in technical communication.

Work from Home Lead Data Software Engineer – Agile
Engine

Collaborate with Data Scientists, design scalable pipelines, and manage data quality and deployment.

Must Haves

• Master’s in Computer Science or Data Science.
• Proven experience as a Data Engineer.
• Proficiency in Python, Java, or Scala.
• Experience with SQL, No
  SQL, Hadoop, Spark, Airflow.
• Knowledge of cloud platforms and containerization.
• Excellent problem‑solving and communication skills.

Nice to Haves

• Experience with ad/marketing data lakes.
• Scala, Glue/EMR/Redshift, Airflow, Terraform knowledge.