Senior System Design Engineer – Banking Industry

📍 Brussels, Belgium (Hybrid/Onsite)

🕒 Full-time | Contract Position

📅 Start Date: First of the Month

About the Role

We are looking for an experienced Senior System Design Engineer to join a leading player in the banking industry. You'll contribute to complex infrastructure environments and critical software systems that support trading, securities, and corporate actions. This is an excellent opportunity to take ownership of both technical and analytical challenges in a highly dynamic environment.

Your Responsibilities

• Translate business and technical requirements into functional system designs.
• Evaluate design trade-offs, scalability, and performance optimization.
• Validate compliance of system designs and support end-to-end implementation.
• Tackle infrastructure-related challenges using modern engineering tools and practices.
• Document designs and contribute to technical writing and process improvement.
• Lead incident investigations and execute root cause analyses.
• Be part of an on-call rotation for the systems under your responsibility.

What You’ll Work With

You’ll be supporting the full value chain of financial instrument processing, from trading to settlement. Key platforms include:

• Fusion, Fidessa, UL Bridge – used for order management and market communication.
• Systems using the FIX protocol (knowledge is a plus).
• Collaborative engagement with third-party software vendors and internal stakeholders.

What We're Looking For

Technical Skills – Must Have

• Experience with Open Systems, JavaScript, and JIRA
• Proven infrastructure or system software experience (5+ years)

Nice to Have

• Knowledge of Confluence, IBM MQ, MySQL, Sophis

Soft Skills

• Proactive, independent, and solution-oriented mindset
• Strong analytical and problem-solving abilities
• Team player with excellent communication skills
• Fast learner, eager to dive into new technologies and tools

Your Background

• Bachelor's or Master's in IT, Software Engineering, Business Management, or equivalent by experience.
• Interest or experience in the trading environment and financial systems.
• Comfortable operating independently and taking initiative.
• Fluent in Dutch and English.

Ready to take the lead in high-impact system design for a major banking player?

Apply now or get in touch for more info.