Hi everyone. We are strengthening its delivery team for a confidential regional digital payments / sandbox environment assignment focused on participant integration, onboarding, testing, certification readiness, interoperability, governance, and risk reduction. We are looking for experienced consultants who can support any of the following specialist areas: 1. Enterprise / Solution Architect Experience in sandbox architecture, infrastructure models, environment layers, API gateways, secure connectivity models, technical blueprints, cloud or hybrid architecture, and payment system integration design. 2. ISO 20022 & Payment Messaging Specialist Experience in ISO 20022 alignment, payment message validation, payment flows, message mapping, interoperability scenarios, payment lifecycle design, and standards-based payment integration. 3. Cybersecurity & Operational Resilience Specialist Experience in security controls, access management, encryption, cyber risk, audit logging, data privacy, resilience, business continuity, secure APIs, and regulated financial infrastructure. 4. API Integration & Testing Specialist Experience in API testing, functional and non-functional test scenarios, interoperability testing, negative test cases, defect management, test evidence, and certification test catalogues. 5. Governance, Risk & Institutional Framework Specialist Experience in governance models, roles and responsibilities, operating procedures, risk frameworks, accountability structures, stakeholder coordination, compliance and institutional sustainability. We are open to two engagement options: Option 1: A specialist team / unit A firm, consortium, or existing team that can provide several of the above capabilities together and work with us as a technical delivery partner. Option 2: Individual consultants Experienced independent consultants who can come in as subject-matter experts for one or more of the specialist roles. This opportunity is best suited for consultants with experience in payment systems, digital financial services, fintech infrastructure, central bank or regulator-facing work, national payment systems, switches, RTGS, instant payments, cross-border payments, ISO 20022, API integration, cybersecurity, sandbox design, or certification frameworks.