System architect eng/ger m/f

We are looking for a System Architect for one of our clients based in Luxembourg.

* Freelance contract or permanent contract via a payrolling company
* 1 year of mission (renewable
* Location: Luxembourg (60-70 %) - Frankfort (30-40%)
* German fluent and English fluent are mandatory


The system architect defines the target architecture for a banking application/functional area and ensures it is fit for its intended purpose while being compliant with architecture standards. The system architect is responsible for all applications across the full lifecycle in his area and looks at all aspects from business architecture down to infrastructure architecture.

System Architecture :

* Gain direct influence on the business vision by shaping the target architecture alongside product management and key stakeholders, ensuring your architectural decisions clearly translate into real business outcomes
* Own end-to-end architectural design, giving you full accountability for technical coherence, long-term scalability, and design quality
* Drive clarity and alignment by translating strategy into a concrete solution intent, with a visible roadmap, clear information models, and explicit dependencies that make complexity manageable
* Build systems that scale by defining clear subsystem boundaries and interfaces, enabling cleaner integrations, easier deployments, and fewer downstream surprises
* Anticipate future needs by designing and evolving the architectural runway, allowing teams to deliver new features faster without constant rework
* Operate in a sustainable environment where architectural standards protect system stability, long-term maintainability, and technical credibility
* Reduce long-term workload and operational risk by actively controlling application lifecycle and architectural debt, with transparency and the authority to prevent short-term trade-offs from becoming long-term problems


Planning :

* Work at system and enterprise level to shape architectural approaches and capability roadmaps, giving you visibility and impact beyond a single product or team
* Influence quarterly priorities by contributing directly to QBRs and PI objectives, ensuring technical enablers are planned early rather than treated as afterthoughts
* Create alignment across teams by consolidating technical insights into clear, shared PI objectives that reduce friction and conflicting directions
* Enable teams to deliver effectively by helping structure features and stories in a way that preserves architectural intent while remaining execution-ready


Collaboration :

* Act as a technical reference point by identifying risks between standards and innovation, and actively shaping robust, bank-wide architectural solutions
* Strengthen decision-making by aligning stakeholders, customers, and partners around a shared architectural direction that supports both system intent and business priorities
* Gain hands-on exposure to supplier ecosystems by ensuring externally delivered solutions integrate cleanly, with full control over technical quality and system consistency

Required experience and skills :

* Fluent in German and English
* BSc/BA in Computer Science, Engineering or a related field and proven working experience as an architect in the information technology and/ or finance sector
* Good knowledge of wealth management business and at least several banking products and services with at least 5 years of experience in a European private bank
* Good understanding of the regulatory framework in the banking industry and standard processing of financial services following common governance rules
* Strong experience with Avaloq banking software is required, further experience in other standard banking products like Temenos Transact & Triple'A might be considered as an advantage
* Excellent written and verbal communication skills
* Strong working knowledge of Microsoft Office, SharePoint, JIRA and standard architecture tools like "Enterprise Architect" and certified methodologies.
* Analytical and critical mindset, risk awareness