We are looking for a  Solution Architect  to join Sopra Steria Apps Services team on an international Program for a leader in the aerospace sector. You will support the implementation of a new approach for Safety Assessment within the new program and focus on defining and governing the architecture of the selected engineering solutions, supporting tool evaluations, and preparing High-Level Design Documentation. You will collaborate with business stakeholders, engineering teams, and solution providers to establish architecture principles, constraints, and standards that ensure a robust, scalable, maintainable, and compliant solution. Note that we can only offer cooperation to people who are located in Poland and have EU citizenship. Responsibilities: Develop, maintain, and govern High-Level Design Documents (HLDD). Define and validate the end-to-end technical and solution architecture for engineering and safety assessment platforms. Define and document architectural constraints, design principles, standards, and governance applicable to the selected toolchain. Establish architecture guidelines and best practices to ensure consistency, scalability, interoperability, maintainability, and long-term sustainability. Perform architecture modelling and maintain relevant views using Enterprise Architect (Sparx EA). Evaluate candidate tools from architecture, integration, compliance, and operability perspectives. Facilitate architecture reviews and support evidence-based technical decision-making. Collaborate with business, engineering, IT, and solution-provider stakeholders to translate business needs into technical solutions. Identify technical risks, dependencies, constraints, and mitigation actions. Support the architecture roadmap and the controlled evolution of the selected digital engineering solution.