Senior Integration Engineer

At U.S. Bank, we’re on a journey to do our best. Helping the customers and businesses we serve to make better and smarter financial decisions, enabling the communities we support to grow and succeed in the right ways, all more confidently and more often—that’s what we call the courage to thrive.   We believe it takes all of us to bring our shared ambition to life, and each person is unique in their potential. A career with U.S. Bank gives you a wide, ever-growing range of opportunities to discover what makes you thrive. Try new things, learn new skills and discover what you excel at—all from Day One.

As a wholly owned subsidiary of U.S. Bank, Elavon is committed to building the platforms and ecosystems that help over 1.5 million customers around the world to achieve their financial goals—no matter what they need. From transaction processing to customer service, to driving innovation and launching new products, we’re building a range of tailored payment solutions powered by the latest technology. As part of our team, you can explore what motivates and energizes your career goals: partnering with our customers, our communities, and each other.

We actively uphold transparent and fair hiring practices that support individual opportunity, inclusive culture, and career mobility across all levels of our organisation.

We offer meaningful opportunities for growth, a culture of inclusion, and a strong commitment to transparency and integrity in everything we do.

Job Description

Senior Integration Engineer

We are seeking an experienced API Engineer to design, build, secure, and operate enterprise-grade APIs that integrate cloud platforms with on‑premise banking application suites. The role focuses on developing reliable and scalable integration services, enabling secure data exchange across channels and systems (core banking, payments, fraud, risk, CRM, digital platforms), while meeting stringent regulatory, availability, and security requirements.

You will work closely with solution architects, platform engineers, security teams, and business stakeholders to deliver API products aligned to bank integration patterns, including synchronous REST services and event-driven integrations.

Direct line reporting:

• Head of Architecture and Core Banking – Europe.

1. Accountabilities and Responsibilities

API Design & Delivery

• Design and implement RESTful APIs and integration services connecting cloud services to on‑prem banking systems.

• Create reusable API patterns for common banking capabilities (customer, accounts, payments, transactions, entitlements).

• Define and maintain API contracts (OpenAPI/Swagger), versioning strategies, and backward compatibility.

• Deliver APIs that meet performance, latency, availability, and resiliency expectations (e.g., timeouts, retries, circuit breakers).

Security, Compliance & Controls

• Implement strong API security controls: OAuth2/OIDC, mTLS, JWT validation, request signing, API gateway policies, and rate limiting.

• Apply secure coding practices and align solutions with bank security standards, audit requirements, and regulatory expectations (e.g., least privilege, encryption in transit/at rest).

• Collaborate with security to support threat modeling, pen test remediation, and secure configuration management.

Cloud–On‑Prem Connectivity & Integration

• Build and operate integration flows using enterprise tooling (examples: API gateway, service mesh, ESB/iPaaS, message brokers).

• Implement hybrid connectivity patterns such as VPN/ExpressRoute/Direct Connect equivalents, private endpoints, network segmentation, and secure routing.

• Integrate with on‑prem technologies (e.g., MQ, legacy services, SOAP where required, databases, batch systems) and modern cloud services.

Observability & Operations

• Implement observability: structured logging, distributed tracing, metrics, dashboards, and alerting.

• Support production deployments and incident triage; conduct root cause analysis and introduce reliability improvements.

• Automate CI/CD pipelines and Infrastructure/Configuration as Code where applicable.

Engineering Excellence

• Write clean, testable code (unit/integration/contract tests).

• Participate in code reviews, technical design reviews, and architecture governance.

• Document API products and integration runbooks for support and operational readiness.

2. Experience a