System Design Engineer (Senior)

juli 3, 2025

Our client is looking for a System Design Engineer. 

As a Senior System Design Engineer, you bring over 5 years of technical system experience to deliver high-quality engineering services. You are responsible for translating business and technical requirements into robust system designs, validating compliance, and supporting deployment. You play a key role in optimizing performance, managing capacity, and driving innovation across IT infrastructure and system software.

Key Responsibilities

1. System Design & Evaluation

  • Translate business and technical requirements into system designs.
  • Evaluate design benefits, trade-offs, and ensure alignment with business goals.
  • Validate design compliance and support deployment to ensure requirements are met.

2. Technical Problem Solving

  • Use development tools to address technical and business challenges.
  • Tackle issues related to technology evolution, capacity management, and performance optimization.
  • Perform complex incident resolution and root cause analysis.

3. Innovation & Documentation

  • Propose innovative ideas to improve existing systems, processes, or services.
  • Maintain and update technical documentation to ensure knowledge continuity.

4. Application & Vendor Management

  • Act as a bridge between end-users and third-party software vendors.
  • Maintain and support applications such as Fusion, Fidessa, and UL Bridge (used for market order placement and feedback).
  • Perform upgrades, configuration tweaks, and production monitoring.
  • Analyze and resolve incidents, including root cause analysis.

5. Project & Stakeholder Collaboration

  • Collaborate with colleagues and project teams on solution development.
  • Contribute to both technical and functional analysis from a business perspective.
  • Communicate effectively with internal stakeholders and external vendors.

On-Call Responsibility

  • Be available for on-duty support for the systems under your responsibility when required.

Required Skills & Competencies

Technical Expertise

  • Proven experience in system software and IT infrastructure.
  • Familiarity with FIX protocol is a plus (not mandatory).
  • Experience with software integration and system analysis.

Core Competencies

  • Adaptive and analytical thinking.
  • Strong collaboration and communication skills.
  • Flexible and result-driven mindset.
  • Hands-on, proactive approach to problem-solving.
  • Interest in trading environments and economic systems.

Qualifications

  • Bachelor’s or Master’s degree in IT, Software Engineering, Business Management, or a related technological field (or equivalent experience).
  • Minimum 5 years of relevant experience in system design and engineering.
  • Fluent in Dutch and English (spoken and written).

Nice-to-Have

  • Experience with:
    • PRINCE2
    • SCRUM
    • Jira
    • Enterprise Architect
    • Financial or insurance sector

Job Application

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Job specifications

ID: 10548

Duration: 01/09/2025-31/12/2025

Location: Brussels

Type: Freelance

Joël De Ben

IT Recruitment Consultant