Expert Java Developer

AlmavivA de Belgique; Den Haag; On-site; EUR 90,000 - 130,000; Full time

Job summary

AlmavivA de Belgique seeks a senior Java backend developer to design and implement enterprise-scale microservices and REST APIs. You will contribute to secure authentication, CI/CD pipelines, and robust testing while aligning with Scrum practices in a multinational setting.

The role requires deep experience with Java frameworks (Spring Boot, Vert.X), messaging systems, NiFi, Kafka, and cloud-native deployment in Kubernetes/Docker, along with solid SQL Server skills.

Qualifications

• More than 15 years in IT.
• Bachelor or Master Degree.
• More than 9 years of experience in Java Backend Development using REST APIs, RDBMs, microservices, CI/CD pipelines and BDD.
• Experience in more than two production-ready solutions written in Java with Vert.X.
• Experience in more than two production-ready solutions using Apache NiFi 2.0.
• Experience in at least one production-ready solution using Tensorflow and Tensorflow Java bindings.
• Experience in more than one production-ready projects with OAUTH standard.
• More than two years of experience in an international/multi-cultural environment.
• More than three years of experience in an Agile/Scrum.
• Sound knowledge of Apache Camel including Enterprise Integration patterns including Messaging Patterns involving popular messaging systems (ActiveMQ or RabbitMQ).
• Sound knowledge of Java and Experience with the following Java frameworks, Spring Boot 3, Vert.X.
• Sound knowledge of the design and development of back-end components (REST APIs, integrations, micro-services).
• Sound knowledge on how to write unit test for Java.
• Good knowledge of software development methodologies (e.g. AGILE).
• Good knowledge of programming on SQL Server databases with TSQL.
• Good knowledge of OOP paradigms and SOLID principles.
• Good knowledge of OAUTH standard. application design.
• Capable to be part of an Agile Team implementing Scrum (team worker, easy going, good communication capabilities).
• Good knowledge of Kafka Stream architecture.

Responsibilities

• Contributing to the improvement of the development and build process.
• Designing and developing production grade, enterprise level systems that make extensive use of messaging and microservices.
• Participating in the Java implementation of a micro-services solution, writing backend code in a reliable, fast, scalable, and secure way, satisfying requirements and service level agreements.
• Writing OAUTH authentication mechanisms. Implementing validation mechanisms as unit and integration tests.
• Assistance with deployment and configuration of the system. Setup CI/CD pipelines. Familiarity with Kubernetes/Docker, is assumed.
• Working comfortably within a team. Following Scrum procedures and disciplines. Estimating the work to be done upon request.
• Writing technical documentation. Account for secure coding practices, as well as logging and auditing features.
• Communicating in a clean, concise way, not only to peers but to upper layers when needed.
• Hands on experience with Git following pull request procedure. Writing clean, secure and high-quality code.

Skills

Java backend development

REST APIs

Microservices

CI/CD pipelines

BDD

Agile/Scrum

OOP

SOLID principles

Kafka Streams

Spring Boot

Vert.X

OAuth

Docker

Kubernetes

Apache Camel

TensorFlow bindings

Apache NiFi

SQL Server / T-SQL

Education

Bachelor or Master Degree

Tools

Kubernetes

Docker

Apache NiFi

TensorFlow Java bindings

OAuth

Apache Camel

Spring Boot 3

Vert.X

SQL Server

Job description

Contributing to the improvement of the development and build process

Designing and developing production grade, enterprise level systems that make extensive use of messaging and microservices.

Participating in the Java implementation of a micro-services solution, writing backend code in a reliable, fast, scalable, and secure way, satisfying requirements and service level agreements.

Writing OAUTH authentication mechanisms. Implementing validation mechanisms as unit and integration tests.

Assistance with deployment and configuration of the system. Setup CI/CD pipelines. Familiarity with Kubernetes/Docker, is assumed.

Working comfortably within a team. Following Scrum procedures and disciplines. Estimating the work to be done upon request.

Writing technical documentation. Account for secure coding practices, as well as logging and auditing features.

Communicating in a clean, concise way, not only to peers but to upper layers when needed.

Hands on experience with Git following pull request procedure. Writing clean, secure and high-quality code.

REQUIREMENTS:

More than 15 years in IT

Bachelor or Master Degree

More than 9 years of experience in Java Backend Development using REST APIs, RDBMs, microservices, CI/CD pipelines and BDD

Experience in more than two production-ready solutions written in Java with Vert.X

Experience in more than two production-ready solutions using Apache NiFi 2.0

Experience in at least one production-ready solutions using Tensorflow and Tesorflow Java bindings

Experience in more than one production-ready projects with OAUTH standard.

More than two years of experience in an international/multi-cultural environment

More than three years of experience in an Agile/Scrum

Sound knowledge of Apache Camel including Enterprise Integration patterns including Messaging Patterns involving popular messaging systems (ActiveMQ or RabbitMQ)

Sound knowledge of Java and Experience with the following Java frameworks, Spring Boot 3, Vert.X

Sound knowledge of the design and development of back-end components (REST APIs, integrations, micro-services)

Sound knowledge on how to write unit test for Java.

Good knowledge of software development methodologies (e.g. AGILE)

Good knowledge of programming on SQL Server databases with TSQL.

Good knowledge of OOP paradigms and SOLID principles

Good knowledge of OAUTH standard. application design.

Capable to be part of an Agile Team implementing Scrum (team worker, easy going, good communication capabilities).

Good knowledge of Kafka Stream architecture