Senior Java Software Engineer

HCLTech; Brussel; Sur place; EUR 70 000 - 110 000; Plein temps

Résumé du poste

HCLTech in Brussels, Belgium is seeking a Senior Java Developer to strengthen our backend and data platform capabilities. You will design and implement robust backend services, contribute to an event-driven architecture, and build reusable platform components for scalable solutions.

The role requires deep experience with Java/Spring Boot, event-driven patterns, and API design. You will collaborate with Architects, Data Stewards, and security teams to ensure reliability and maintainability.

Qualifications

• Strong backend development experience with Java/Spring Boot.
• Proven experience with event-driven systems such as Kafka.
• Solid understanding of event sourcing, CQRS and distributed design.
• Experience designing APIs and integration patterns.

Responsabilités

• Design and implement backend services for MADP capabilities.
• Contribute to an event-driven architecture with CQRS and messaging.
• Build platform-level components that are reusable and scalable.
• Ensure API contracts are versioned and stable.
• Collaborate with Architects, Data Stewards, Product Owners, Operations and Security.
• Document and share knowledge to maintain a transparent platform.

Connaissances

Java

Spring Boot

Event-driven

API design

Distributed systems

Kafka

Outils

Kafka

Description du poste

Job Role

Senior Java Developer

Location

Brusseles, Belgium

Experience

10+Years

Job Description

e are looking for a Senior Backend / Data Platform Engineer to strengthen our squad and contribute to building a scalable, robust, and reusable platform.

1. Platform Development & Architecture

• Design and implement backend services supporting MADP capabilities
• Contribute to an event-driven architecture (event sourcing, CQRS, messaging)
• Build and evolve platform-level components (not just feature-specific code)
• Ensure solutions are reusable, scalable, and aligned with platform principles

2. API & Integration Design

• Design and implement robust, versioned APIs for data access and integration
• Ensure backward/forward compatibility and stability of API contracts
• Integrate with upstream and downstream systems (e.g. OnePAM ecosystem)

3. Data Modelling & Lifecycle Management

• Contribute to domain-driven data modelling
• Manage schema evolution, ensuring minimal impact on consumers
• Ensure alignment with data governance and data quality rules
• Understand and handle data lifecycle complexity (creation, update, deletion, versioning)

4. Platform Engineering & CI/CD

• Contribute to CI/CD pipelines, branching strategies, and promotion flows
• Support the separation between:
• Platform lifecycle
• Tenant/domain lifecycle
• Improve automation, deployment standards, and engineering practices

5. Operability & Reliability

• Ensure solutions are production-ready and observable
• Contribute to:
• Monitoring & observability
• Incident resolution
• Performance optimization
• Support a high availability, multi-tenant platform

6. Collaboration & Knowledge Sharing

• Work closely with:
• Architects, Data Stewards, and Product Owners
• Operations and Security teams
• Actively document, explain, and share knowledge
• Contribute to a transparent and maintainable platform (no “black box” systems)

Required Skills & Experience

Core Technical Skills

• Strong experience in backend development (Java / Spring Boot or similar)
• Proven experience with event-driven systems (Kafka or equivalent)
• Solid understanding of:
• Event sourcing and CQRS patterns
• Distributed systems design
• Strong experience in API design and integration patterns

Data & Platform Expertise

• Experience with:
• Data modelling (schema design, evolution)
• Handling data lifecycle and versioning
• Familiarity with data governance and access control concepts
• Experience building or contributing to platforms (not just applications)

DevOps & Engineering Practices

• Knowledge of:
• CI/CD pipelines
• Git branching strategies
• Deployment and release management
• Familiarity with cloud and distributed infrastructure

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