Senior Banksphere Integration Engineer - Contractor (Spain)

Senior Banksphere Integration Engineer - Spain 📍 Spain & Portugal | Remote 🕘 Full-time 🌍 English B2+/C1 required

• We are looking for a Senior Banksphere Integration Engineer to join a large-scale banking modernization initiative.
• This role will act as the bridge between legacy core banking systems and modern digital platforms, helping migrate business capabilities from traditional banking environments into a modern microservices architecture.
• You will work closely with business analysts, architects, and development teams to enable digital banking products while ensuring operational stability and business continuity throughout the modernization process.

• Design, configure, and optimize transactional workflows and business logic within the Banksphere ecosystem.
• Enable financial products and services across modern digital channels.
• Participate in legacy system modernization and migration initiatives.
• Analyze and decommission legacy banking workflows while minimizing operational risk.
• Collaborate with technical and business teams to define integration requirements and API contracts.
• Map legacy banking data structures to modern application architectures.
• Configure transactional validations, business rules, alerts, and operational controls.
• Support coexistence strategies between legacy and modern platforms during migration phases.
• Contribute to architecture discussions and modernization roadmaps.
• What we're looking for

4+ yea