Our client, a top IT consultancy, is partnering with a leading financial services organisation, to establish a dedicated Generative AI hub in Valencia. This new unit will be the centre of the financial services provider's AI-driven transformation — building intelligent applications that modernise financial workflows, surface AI-generated insights, and deliver seamless digital experiences to advisors and end users.We are looking for a Senior Frontend Developer to be one of the founding engineers of this hub. You will own the user-facing layer of IMF’s Agentic AI platform: building React applications that interact with LLM agents in real time, rendering structured AI outputs, and creating interfaces that make complex financial AI capabilities accessible and intuitive for users.Key Responsibilities

Design and build production-grade React applications for the organisation's Generative AI platform, including agent-facing dashboards, document intelligence interfaces, and advisor-facing portalsDevelop reusable, accessible, and well-tested UI component libraries in React and TypeScriptImplement real-time agent interaction interfaces using AG-UI and A2A protocols, including streaming LLM output renderingIntegrate frontend applications with RESTful and event-driven backend APIs (Node.js / .NET 8 / FastAPI)Consume and visualise AI-generated outputs: RAG responses, document analysis results, agent reasoning traces, and evaluation metricsImplement authentication and RBAC flows using Azure Active Directory / MSALConnect applications to Azure App Service and Azure Static Web Apps deployment pipelinesBuild frontend observability integrations with Azure Monitor and Application InsightsCollaborate with UX, backend engineers, and AI/ML specialists to translate complex agent behaviours into clear, usable interfacesMaintain component documentation (Storybook)



and uphold frontend coding standardsContribute to the technical culture and engineering practices of the Valencia hub from day oneFrontend Core

React 18+ ·TypeScript — primary UI framework and languageNext.js or Vite — application bundling and server-side renderingReact Query / Zustand / Redux Toolkit — state and data managementTailwind CSS / CSS Modules — stylingStorybook — component documentation and design systemJest ·React Testing Library · Playwright — unit, integration and E2E testingAgent & AI Interface Layer

AG-UI protocol — agent-to-UI streaming and real-time interaction interfacesA2A (Agent-to-Agent) — inter-agent communication surfaced at the UI layerMCP (Model Context Protocol) — context and tool-call integration in the frontendAzure OpenAI response streaming — real-time LLM output rendering and progressive disclosureAzure App Service · Azure Static Web Apps — hosting and deploymentAzure Monitor · Application Insights — frontend observability and error trackingAzure Key Vault — secure handling of client-side secrets and configurationAzure Kubernetes Service (AKS) — understanding of the agent runtime environmentREST APIs served by Node.js or .NET 8 (ASP.NET Core) — primary integration surfaceFastAPI endpoints — agent tooling and LLM-facing APIsAzure Cosmos DB — agent short-term / long-term memory surfaced in UIAzure Cognitive Search — vector search and RAG results rendered in UI componentsDevOps & Tooling

Git ·GitHub / Azure DevOps — version control and CI/CDDocker — local development and containerised buildsESLint ·Prettier · Husky — code quality and pre-commit hooksRequired Skills & Experience





5+ years of frontend development experience in production environmentsExpert-level React and TypeScript — hooks, context, performance optimisation, custom component librariesExperience building and consuming RESTful APIs, including streaming and real-time dataSolid knowledge of state management patterns (React Query, Zustand or Redux Toolkit)Experience with Azure platform services — especially App Service, Static Web Apps, Active DirectoryFamiliarity with authentication flows: OAuth 2.0, OpenID Connect, MSALExperience with automated testing: unit (Jest / RTL) and E2E (Playwright or Cypress)Ability to work autonomously in a greenfield, fast-paced environment with shifting requirementsFluent English — working language for all technical documentation and ceremoniesLocation - preferably Valencia, but open to other locations with availability to travel to Valencia on a regular basis. In that case, remote.Nice to Have

Experience integrating with LLM streaming APIs (Azure OpenAI, OpenAI, Anthropic)Knowledge of AG-UI, A2A or MCP protocols for agent-facing user interfacesFamiliarity with Next.js App Router / Server ComponentsExperience with design systems and Storybook in large codebasesUnderstanding of RAG pipelines and how to surface vector search results effectively in the UIPrior experience in a hub or centre-of-excellence environmentBackground in financial services, banking or fintechWhy Join This Team

Founding engineer role — shape the UI architecture and design culture of a brand-new GenAI hubWork at the intersection of React and Agentic AI — a genuinely rare combination in the marketBacked by the organisation's integral engineering community, tooling and career development programmesValencia-based hub with a collaborative, senior-weighted teamDirect exposure to the company's transformation agenda and senior stakeholders

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📌 Senior Frontend Developer (Madrid)
🏢 ISG International Service Group
📍 Madrid