SOLUTION ARCHITECT

We are seeking an experienced Solution Architect to lead the end-to-end architecture of the Cards Infrastructure Gateway-the foundational layer enabling secure, scalable, and resilient connectivity between card platforms (issuing/acquiring) and external/payment networks. You will own the solution blueprint across transaction routing, authorization, settlement interfaces, tokenization, HSM integrations, ISO 8583/ISO 20022 messaging, and API mediation, ensuring compliance with PCI DSS and bank-grade security, resilience, and observability standards. Scope & Ownership'. Hybrid working: The places that you work from day to day will vary according to your role, your needs, and those of the business; it will be a blend of Company offices, client sites, and your home; noting that you will be unable to work at home 100% of the time. Your Role:

• Domains: Card issuing & acquiring, payment gateways, authorization/clearing, tokenization & cryptography, merchant onboarding, fraud controls integration (e.g., ARIC), dispute/chargeback flows.
• Systems: Legacy card switches, orchestration layers, API gateways, MQ/event buses, HSMs, data stores, and cloud/on-prem hybrid infrastructure.
• Interfaces: ISO 8583, ISO 20022, REST/gRPC, file-based batch, SFTP, message queues (Kafka/RabbitMQ), payment network connectors (e.g., Visa/Mastercard).

Your Skills: You should have experience with Architecture & Design

• Define the target architecture for the Cards Infra Gateway: ingress/egress, API mediation, message transformation, routing, resilience, and observability patterns.
• Design high-throughput, low-latency transaction flows (authorization, capture, reversal, refund, settlement), including real-time and batch interfaces.
• Establish non-functional requirements (NFRs): performance SLAs, HA ( 99.99%), DR (RPO/RTO), scalability, security, compliance, and cost efficiency.
• Create solution blueprints (context/container/component diagrams), sequence diagrams, and data flow models.

Security & Compliance

• Architect PCI DSS compliant solutions; enforce network segmentation, key management, mTLS, OAuth2, certificate lifecycle, and secrets management.
• Integrate HSMs for PIN, EMV, and token cryptography; design tokenization and PAN vault patterns with least privilege access.
• Align with regulatory requirements (e.g., GDPR, PSD2/SCA) and auditability (logging, traceability, data retention).

Integration & Platforms

• Define patterns for ISO 8583/ISO 20022 adapters, schema validation, and message transformation.
• Govern API design standards via API gateways (e.g., Apigee/Kong/Azure API Management) and service mesh (Istio/Linked) where applicable.
• Lead integration with card networks, switches, fraud platforms, merchant onboarding, CRM, and ledger/settlement systems.

Resilience, Operations & Observability

• Engineer for graceful degradation: circuit breakers, retries/backoff, idempotency, poison queue handling, and chaos testing.
• Define SRE-aligned practices: golden signals, SLO/SLA, capacity planning, autoscaling, canary/blue-green deployments.
• Standardize telemetry: distributed tracing (Open Telemetry), metrics (Prometheus/Grafana), and centralized logging (ELK).

Delivery Leadership & Governance

• Own solution approvals (Architecture Review Boards), ensure traceability from business capability to technology design.
• Partner with Product Owners, Engineering Leads, Security, and Risk to deliver incremental value, managing dependencies and risks.
• Provide technical leadership to engineers, ensuring adherence to design and coding standards; hands-on review of POCs and critical components.

We are a Disability Confident Employer: Capgemini is proud to be a Disability Confident Employer (Level 2) under the UK Government's Disability Confident scheme. As part of our commitment to inclusive recruitment, we will offer an interview to all candidates who:

• Declare they have a disability, and
• Meet the minimum essential criteria for the role.

Do you have experience in gRPC?

Capgemini ist einer der weltweit führenden Anbieter von Management- und IT-Beratung, Technologie-Services und Digitaler Transformation. Als ein Wegbereiter für Innovation unterstützt das Unternehmen seine Kunden bei deren komplexen Herausforderungen rund um Cloud, Digital und Plattformen.