Senior Java Developer

Devoteam; Machelen; Hybride; EUR 70 000 - 100 000; Plein temps

Avantages offerts par ce poste

Company car

Meal vouchers

Group insurance

Hybrid work model

Learning budget

Résumé du poste

Devoteam Creative Tech Belgium is seeking a Senior Java Developer to design, build, and maintain high-performance enterprise applications, including back-end services and front-end components using modern frameworks. This is an AI-augmented role requiring active integration of AI tools into daily development workflows.

You will mentor junior developers, participate in code reviews and QA, and collaborate with clients across industries.

Qualifications

• Strong analytical and architectural skills with CS fundamentals.
• Good knowledge of design patterns, Clean Architecture and microservices.
• Experience with Agile/Scrum, DevSecOps, and modern Java frameworks.
• Fluent in Dutch or French and English; strong communication.

Responsabilités

• Lead software architecture and design of enterprise apps with scalable Java code.
• Build robust back-end microservices and REST/gRPC/GraphQL APIs.
• Develop front-end components to support full-stack delivery.
• Leverage AI-assisted tools to streamline coding, testing and docs.
• Design AI-powered features and RAG pipelines for enterprise apps.
• Participate in code reviews, testing, and QA processes.
• Mentor junior developers and communicate with clients.

Connaissances

Analytical skills

Problem-solving

Architectural skills

Communication skills

AI curiosity

Dutch/French & English

Outils

Git

Maven/Gradle

Spring Boot

Hibernate/JPA

Docker

Kubernetes

GitHub Actions

Description du poste

Devoteam is a leading consulting firm focused on digital transformation. We help our clients leverage technology to achieve their business goals. Our longstanding partnerships with leaders like AWS, Google Cloud, Microsoft, and ServiceNow amplify our capabilities, allowing us to deliver top-tier expertise and award-winning services.

For 30 years, we have always been on the next tech wave. Devoteam has guided organizations through the Internet and cloud. The next revolution? AI. With 11,000 tech natives working in 25+ countries, we bring you highly skilled IT experts across Europe. At Devoteam, tech is in our DNA, and it’s the people we empower with tech. Now, with responsible AI, we’re ready to unlock a future where technology drives positive change.

Job Description

About the Team

Devoteam Creative Tech is Belgium's leading digital consultancy, specializing in cloud-native development, AI innovation, and modern software engineering. Our multidisciplinary teams work on high-impact projects for top-tier clients across industries — from intelligent automation to large-scale platform modernizations. We foster a culture of curiosity, continuous learning, and creative problem-solving.

About The Role

As a Senior Java Developer at Devoteam Creative Tech, you will take on a prominent role in designing, building, and maintaining high-performance enterprise applications and modern back-end services, with foundational capabilities in any front-end frameworks (e.g., Angular, React, Vue.js). This is an AI Augmented position: you are expected to actively integrate AI tools and techniques into your daily workflow to accelerate development, drive code quality, and build intelligent application features.

Mission

• Take on a prominent role in the software architecture and design of enterprise applications, maintaining clean, scalable, and maintainable Java codebases.
• Design and implement robust back-end microservices, REST APIs, and databases with optimized performance, security, and scalability.
• Build and integrate responsive front-end components to support full-stack project delivery and client requirements.
• Leverage AI-assisted software engineering tools (e.g., GitHub Copilot, Cursor, Antigravity, Google Gemini, Claude) to streamline coding, unit testing, debugging, and documentation processes.
• Design and implement AI-powered features, including LLM API integrations, RAG pipelines, intelligent automation, and conversational interfaces.
• Participate in code reviews, automated testing, and quality assurance processes to drive engineering excellence.
• Provide technical guidance and mentorship to junior developers while effectively communicating with clients and business stakeholders.

Qualifications

Profile

• Strong analytical, problem-solving, and architectural skills with a deep understanding of computer science fundamentals, data structures, and algorithms.
• Strong understanding of software design patterns, Clean Architecture, and microservices design principles.
• Solid grasp of the software development lifecycle, Agile/Scrum methodologies, and DevSecOps practices.
• Excellent communication skills, with the ability to explain complex technical concepts clearly to non-technical stakeholders.
• Genuine curiosity about AI and a proactive approach to adopting modern tools, keeping pace with emerging Java frameworks, cloud tech, and AI practices.
• Fluency in Dutch or French, and English.

Technical Requirements

Java Core & Back-End

• Java Core & Frameworks — Deep expertise in Java (Java 17/21+), Spring Framework, Spring Boot, and Hibernate / JPA.
• API Development & Microservices — Design and implementation of scalable microservice architectures and robust web services (RESTful APIs, gRPC, or GraphQL).
• Databases & Data Modeling — Strong proficiency in relational databases (PostgreSQL, MySQL, Oracle) and SQL, as well as familiarity with NoSQL stores.

Front-End & Web

• Web Fundamentals — Solid practical knowledge of a front-end framework, TypeScript, HTML5, CSS3/SASS, and responsive UI integration.
• State & Integration — Experience integrating front-ends with back-end REST APIs and managing client-side application state.

Quality, CI/CD & Security

• Testing Frameworks — Strong unit testing and TDD mindset using JUnit, Mockito, and front-end testing utilities (Jasmine/Karma or Jest).
• DevOps & Version Control — Proficiency with Git, build tools (Maven, Gradle), and modern CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins, or Azure DevOps).
• Security — Understanding of web application security principles, OAuth2, OpenID Connect, and JWT.

AI Skills

This is an AI Augmented role. The following AI competencies are mandatory:

• Hands-on experience with AI-assisted development tools (GitHub Copilot, Cursor, Antigravity, Google Gemini, Claude, or similar) embedded in your daily workflow.
• Practical understanding of Large Language Models (LLMs) and experience integrating LLM APIs (OpenAI, Anthropic, Google Gemini, Azure OpenAI) into Java applications (e.g., using Spring AI or LangChain4j).
• Experience with prompt engineering techniques and constructing LLM-enabled workflows (summarization, data extraction, enterprise search).
• Understanding of Retrieval-Augmented Generation (RAG) patterns and vector databases (eg: pgvector, Pinecone, Weaviate, Qdrant).
• Awareness of responsible AI principles: data privacy, security, and ethical AI deployment.

Assets (Nice to Have)

• Experience with cloud platforms (AWS, Azure, or GCP) and cloud-native deployment patterns.
• Knowledge of containerization technologies such as Docker, Kubernetes, and Helm.
• Experience with event-driven architectures and messaging systems (Apache Kafka, RabbitMQ).
• Familiarity with building AI agents or multi-agent systems.
• Relevant professional certifications (e.g., Spring Certified Professional, AWS/Azure/GCP Developer, or AI certifications).

Additional Information

What We Offer

• A challenging and varied role within Devoteam Creative Tech, Belgium's leading tech consultancy.
• Work on cutting-edge projects combining modern software development with AI innovation.
• A competitive salary package including company car, net allowances, meal vouchers, and group insurance.
• Continuous learning opportunities: certifications, training budgets, conferences, and internal knowledge-sharing.
• A hybrid work model with modern, inspiring office spaces designed for collaboration.
• A culture that values innovation, autonomy, and personal growth.