Senior Java Developer

ARHS; Den Haag; On-site; EUR 90,000 - 130,000; Full time

Job summary

Arηs Group, part of Accenture, seeks a senior Java backend developer to design and implement enterprise-grade systems with microservices and messaging. You will contribute production-grade back-end code and assist in OAuth and validation tests, while supporting deployment and CI/CD pipelines with Kubernetes and Docker in an Agile Scrum setting.

Strong collaboration and clean, secure coding are essential. Qualifications include 9+ years in IT, Java expertise, REST/Microservices experience, and

Qualifications

• At least 9 years of IT backend Java experience.
• 3+ years in Agile/Scrum environment.
• English CEFR B2 or higher.
• Proven Java, Spring Boot 3, Vert.X experience.
• TensorFlow Java bindings integration experience.
• REST APIs and microservices design; unit testing in Java.
• Experience with messaging/integration: Camel, NiFi, ActiveMQ, RabbitMQ, Kafka Streams.
• SQL Server and T-SQL knowledge.
• Solid OOP and SOLID principles; agile methods.
• Strong teamwork and Scrum collaboration.
• Nice to have Kubernetes, Vue.js, Elasticsearch, Azure DevOps, NoSQL/Neo4j, Dapr.

Responsibilities

• Contribute to the improvement of the development and build process.
• Design and develop production-grade, enterprise-level systems using microservices.
• Implement Java backend for a microservices solution with reliable, scalable code.
• Develop OAUTH auth and validation tests; perform unit/integration testing.
• Assist deployment/configuration, CI/CD pipelines with Kubernetes and Docker.
• Work in a Scrum team, provide work estimates in an Agile setting.
• Produce technical documentation with secure coding, logging and auditing.

Skills

English (CEFR B2)

Teamwork

Agile/Scrum

Education

Bachelor's degree or equivalent

Tools

Java

Spring Boot 3

Vert.x

TensorFlow Java

REST APIs

OAuth

Kafka Streams

ActiveMQ

RabbitMQ

Camel

NiFi 2.0

SQL Server / T-SQL

OOP/SOLID

Kubernetes

Docker

Vue.js

Elasticsearch

Azure DevOps

Neo4j

Dapr

Job description

Arηs Group, Part of Accenture, specializes in the management of complex public sector IT projects, including systems integration, informatics and analytics, solution implementation and program management. Our team helps lead clients through digital and information systems design, bringing expertise in a variety of areas ranging from software development, data science and security management to machine learning, cloud, and mobile development.
Arηs Group was acquired by Accenture in July 2024.

Job Description

• Contribute to the improvement of the development and build process
• Design and develop production-grade, enterprise-level systems making extensive use of messaging and microservices
• Participate in the Java implementation of a microservices solution, writing reliable, fast, scalable and secure backend code that meets requirements and service level agreements
• Write OAUTH authentication mechanisms and implement validation mechanisms as unit and integration tests
• Assist with deployment and configuration of the system, including setting up CI/CD pipelines, using Kubernetes and Docker
• Work as part of a Scrum team, following Agile procedures and providing work estimates upon request
• Write technical documentation, accounting for secure coding practices, logging and auditing features
• Communicate clearly and concisely with peers and upper layers of the organisation when needed
• Use Git following pull request procedures, writing clean, secure and high-quality code

Qualifications

• Minimum 9 years of relevant IT professional experience in Java backend development, at least 3 of which in an Agile/Scrum environment
• Minimum education level corresponding to the requested category
• Minimum English language proficiency: CEFR B2
• Sound knowledge of Java, with hands-on experience in Spring Boot 3 and Vert.X, and provable working experience in Vert.X solutions
• Provable working experience integrating TensorFlow and TensorFlow Java bindings
• Sound knowledge of REST APIs and microservices design and development, unit testing in Java, and the OAUTH standard and application design, with provable working experience
• Sound knowledge of integration and messaging technologies, including Apache Camel, Apache NiFi 2.0, ActiveMQ, RabbitMQ and Kafka Streams architecture, including Enterprise Integration Patterns
• Good knowledge of programming on SQL Server databases with T-SQL
• Good knowledge of OOP paradigms and SOLID principles
• Good knowledge of software development methodologies, in particular Agile
• Strong teamwork, communication skills and ability to work effectively within a Scrum team
• Nice to have: experience in an international or multi-cultural environment, knowledge of Kubernetes (image creation and optimisation, stateful containers, container and pod lifecycle, Helm Charts, probes, upgrade procedures, persistent volumes), Vue.js, Elasticsearch, Azure DevOps, NoSQL and graph databases (Neo4j), and Dapr

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