Technical Lead, Agentic Commerce Engineering - (London)

Realex Payments; City of Westminster; Presencial; GBP 110.000 - 150.000; Jornada completa

Descripción de la vacante

Realex Payments is seeking a Technical Lead in Agentic Commerce Engineering to shape secure, scalable payments infrastructure for AI-driven agent interactions, including tokenization, authentication, and real-time visibility.

You will lead API and SDK design, guide a greenfield squad, mentor engineers, and collaborate with partners to align on standards and practical approaches to agent-led payments.

Formación

• 8+ years of software engineering, with architecture ownership of distributed services.
• Strong cloud-native engineering experience on AWS, GCP or Azure.
• Practical understanding of AI-agent systems and safe, auditable payment flows.
• Proven technical leadership including architecture ownership and mentoring engineers.
• Experience designing API-first platforms with clear contracts and testing strategies.
• Excellent communication and collaboration across cross-functional teams.

Responsabilidades

• Lead the design and delivery of secure checkout and payment APIs and SDKs.
• Architect merchant-facing APIs with reliable error handling and comprehensive docs.
• Provide hands-on leadership through architecture reviews, code reviews, and standards.
• Mentor engineers and drive engineering standards across squads.
• Collaborate with ecosystem partners and standards groups on agent-led payments.

Conocimientos

Distributed services

APIs

Cloud-native

AI-agent systems

Technical leadership

Developer experience

Herramientas

AWS

GCP

Azure

Descripción del empleo

Make your mark at one of the biggest names in payments. We're looking for a Technical Lead, Agentic Commerce Engineering to join our ever-evolving agentic commerce engineering team and help shape the future of global commerce. What you'll own We are building the future of autonomous commerce. As AI agents begin to discover products, compare options, build carts, and initiate purchases on behalf of consumers, the payments layer needs new infrastructure for trust, identity, user intent, authentication, tokenization, fraud signals, and real-time transaction visibility. As Technical Lead in Agentic Commerce Engineering, you will help define and build that infrastructure. This is a hands-on technical leadership role for someone who wants to shape a new capability, influence emerging standards, and build systems that handle real transaction flow on a global scale. AI Agent Integrations

• Lead the design and delivery of secure checkout and payment APIs that AI agents can invoke reliably and deterministically, including support for concepts such as UCP, ACP, AP2, agentic tokens, delegated credentials, verifiable intent, and MPP.
• Define platform patterns for agent identity, delegated authority, user intent, authentication, tokenization, fraud signals, evidence records, reporting, and downstream payment integration.
• Partner with internal teams and external ecosystem participants, including standards groups and AI commerce partners, to help shape practical, interoperable approaches to agent-led payments.

API & SDK Development

• Architect and ship merchant-facing APIs and SDKs that are easy to integrate, with clear contracts, predictable error handling, strong documentation, sandbox-friendly flows, and excellent developer experience.
• Champion developer experience by designing for discoverability, fast time-to-first-transaction, reliable testing, and feedback loops from merchants, partners, and external developers.
• Contribute to API governance and platform standards across the wider engineering organization.

Technical Leadership

• Set technical direction for a greenfield agentic commerce squad, balancing speed, interoperability, security, reliability, and long-term platform extensibility.
• Provide hands‑on leadership through architecture reviews, design decisions, code reviews, mentoring, incident learning, and engineering standards.
• Help recruit and develop AI-forward engineers who are curious, high-agency, and excited to build in a category that is still being defined.

What you'd bring

• An opinionated voice to help shape the future of agentic commerce
  Outstanding communication skills, you will know how to read the room and know how to build solid working relationships at all levels
• 8+ years of software engineering experience, including architecture and production ownership of distributed services, APIs, or transaction‑processing platforms that require high reliability, security, observability, and operational readiness.
• Strong cloud‑native engineering experience on AWS, GCP, Azure or comparable public cloud environments, with the ability to make pragmatic architecture decisions across scalability, resilience, deployment, monitoring, and cost.
• Practical understanding of AI‑agent systems, including how agents use tools, APIs, structured inputs and outputs, delegated permissions, and external services to complete tasks, plus the judgment to design safe, deterministic, and auditable payment flows around those behaviors.
• Proven technical leadership experience, including architecture ownership, mentoring engineers, leading design reviews, influencing cross‑functional teams, and making clear tradeoffs in ambiguous or emerging product areas.
• Experience designing API‑first platforms with clear contracts, versioning, documentation, testing strategies, predictable error handling, secure integration patterns, and strong developer experience.

It's a bonus if you have

• Experience in payments, fintech, commerce platforms, card‑not‑present processing, checkout, gateways, tokenization, 3DS/SCA, fraud/risk systems, dispute workflows, merchant reporting, or other real‑time money movement platforms.
• Experience with LLM‑powered applications, AI agent frameworks, tool‑calling systems, MCP‑style integrations, A2A‑style protocols, or standards work related to agent identity, delegated authority, verifiable intent, safe AI integration, or agentic commerce.
• Public engineering presence or ecosystem involvement, such as meaningful GitHub contributions, open‑source participation, standards work, technical writing, conference/forum attendance and active participation, community engagement, or experience building greenfield products in complex enterprise environments.
  Our inclusive and global teams win together every day. We're proud to have the best minds in the industry, who you can learn from as you grow your career. The people, the energy, the connections

- it's unmatched. Come and be part of an ever‑evolving company and get dynamic opportunities that go beyond borders. What makes a Globalpayer? Globalpayers think like a client, act like an owner and win as one team. We're curious and innovative - always finding better ways to deliver impact. We empower each other to make decisions, and it's our passion that drives excellence in everything we set out to do.