Senior Software Engineer – Agentic Commerce - (London)
Global Payments2 days ago
London, United KingdomSenior
Responsibilities
- Design and build secure, deterministic checkout and payment APIs for AI-agent integrations.
- Implement validation and processing flows for agent context, user intent, delegated authority, payment credentials, risk signals, transaction evidence, and reporting data.
- Integrate agentic commerce capabilities with payment platforms, gateways, checkout, tokenization, authentication, fraud, reporting, and merchant systems.
- Build merchant-facing APIs, SDKs, documentation, sample flows, sandbox experiences, and developer tools.
- Develop and operate Java-based backend services with strong performance, observability, security, resilience, and reliability.
- Own features through design, implementation, testing, deployment, monitoring, and iteration.
- Contribute to design reviews, code reviews, service documentation, production readiness, and cross-functional delivery.
Requirements
- 5+ years of software engineering experience building and operating production services, APIs, distributed systems, or transaction-processing applications.
- Experience building and operating cloud-based systems on AWS, Google Cloud Platform, or comparable public cloud environments.
- Strong fundamentals in deployment, monitoring, reliability, secure service design, API design, testing, observability, resilience, maintainability, and production support.
- Practical interest in AI agents and agentic workflows, including API calls, structured data, delegated permissions, and validation before real-world actions.
- Ability to collaborate across product, architecture, security, fraud, checkout, tokenization, gateway, and platform teams.
- Preferred experience includes payments, fintech, commerce, gateways, card-not-present processing, checkout, tokenization, 3DS/SCA, fraud or risk, disputes, and merchant reporting.
- Preferred experience includes AI-powered applications, agent frameworks, LLM tool-calling, MCP-style integrations, A2A-style workflows, safe AI execution patterns, Node.js, TypeScript, SDKs, developer tooling, sandbox environments, or merchant-facing APIs.
Categories
About Global Payments
Global Payments is a public payment technology and merchant services company that provides card acceptance, ecommerce, POS, and integrated software to businesses and financial institutions. It earns primarily from transaction processing fees and software subscriptions, and trades on the NYSE as GPN. Headquartered in Atlanta, it is a Fortune 500 company and combined with TSYS in 2019 to add issuer processing and banking partnerships.