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via ats_greenhouse · 27 May 2026 ·17 days ago

Senior Full-Stack Engineer - AI Agent Platform

ebury

London

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<div class="content-intro">Ebury helps ambitious businesses unlock global growth, and we take the same approach with our people. We encourage innovation and movement, collaboration and problem-solving, and foster an environment where everyone can feel they belong, are valued, supported and empowered to succeed.
If you’re a collaborator who wants to help transform how businesses operate globally, get in touch - we’d love to discuss how Ebury can accelerate your career so you can shape the future.</div>Senior Full-Stack Engineer - AI Agent Platform
London Victoria Office - Hybrid: 4 days in the office, 1 day working from home
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About the Role
We're building an AI-powered financial crime investigation platform that's transforming how Ebury's compliance teams work. Our AI agents will process thousands of screening cases, reducing analyst workload while maintaining regulatory standards.
We're looking for a Senior Full-Stack Engineer to help us scale our platform and raise the engineering bar. You'll architect and deliver complex features across the entire stack - from React frontends to Python backends to LLM integrations - while mentoring teammates and shaping our technical direction.
This is a unique opportunity to work at the intersection of AI/ML, fintech, and compliance - building production AI systems that handle real financial crime investigations at scale.
What You'll Do
<ul>
<li id="E233" class="qowt-li-2_0 qowt-list x-scope qowt-word-para-3">Architect and build end-to-end features across our React frontend and FastAPI backend, making sound technical decisions that balance speed with maintainability</li>
<li id="E235" class="qowt-li-2_0 qowt-list x-scope qowt-word-para-3">Design AI agent workflows using LangGraph for screening automation, RAG pipelines, and multi-agent orchestration</li>
<li id="E237" class="qowt-li-2_0 qowt-list x-scope qowt-word-para-3">Lead technical initiatives - own complex features from design to production, breaking down ambiguous problems into actionable work</li>
<li id="E239" class="qowt-li-2_0 qowt-list x-scope qowt-word-para-3">Integrate complex data sources (internal APIs, third-party services like LexisNexis, data warehouse) with robust error handling and observability</li>
<li id="E241" class="qowt-li-2_0 qowt-list x-scope qowt-word-para-3">Improve platform reliability - implement monitoring, alerting, and performance optimizations for production AI systems</li>
<li id="E243" class="qowt-li-2_0 qowt-list x-scope qowt-word-para-3">Mentor and uplift junior and mid-level engineers through code reviews, pairing, and technical guidance</li>
<li id="E245" class="qowt-li-2_0 qowt-list x-scope qowt-word-para-3">Shape engineering practices - contribute to architecture decisions, coding standards, and team processes</li>
<li id="E247" class="qowt-li-2_0 qowt-list x-scope qowt-word-para-3">Collaborate cross-functionally with Product, Design, Compliance, and other engineering teams to deliver impactful solutions</li>
</ul>
Tech Stack
Frontend:
<ul>
<li id="E255" class="x-scope qowt-word-para-1">React, TypeScript, Material-UI</li>
<li id="E257" class="x-scope qowt-word-para-1">Module Federation (Micro-frontend architecture)</li>
<li id="E259" class="x-scope qowt-word-para-1">Vite, Vitest</li>
</ul>
Backend:
<ul>
<li id="E265" class="x-scope qowt-word-para-1">Python 3.13, FastAPI</li>
<li class="x-scope qowt-word-para-1">LangGraph (AI agent orchestration)</li>
<li class="x-scope qowt-word-para-1">LlamaIndex (RAG/vector search)</li>
<li class="x-scope qowt-word-para-1">AWS Bedrock</li>
<li class="x-scope qowt-word-para-1">DynamoDB, OpenSearch Serverless</li>
</ul>
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Infrastructure:
<ul>
<li id="E279" class="x-scope qowt-word-para-1">AWS (ECS Fargate, Lambda, API Gateway, S3)</li>
<li id="E281" class="x-scope qowt-word-para-1">Terraform, GitHub Actions</li>
<li id="E283" class="x-scope qowt-word-para-1">Docker, Kubernetes</li>
<li id="E285" class="x-scope qowt-word-para-1">Sentry, Langfuse (LLM observability) </li>
</ul>
What We're Looking For
Must Have:
<ul>
<li id="E293" class="qowt-li-1_0 qowt-list x-scope qowt-word-para-3">5+ years of professional software engineering experience</li>
<li id="E295" class="qowt-li-1_0 qowt-list x-scope qowt-word-para-3">Strong React + TypeScript skills - you can architect complex frontend applications with good state management, performance, and testing</li>
<li id="E297" class="qowt-li-1_0 qowt-list x-scope qowt-word-para-3">Strong Python backend experience - FastAPI, Django, or Flask with async programming, clean architecture, and production-grade code</li>
<li id="E299" class="qowt-li-1_0 qowt-list x-scope qowt-word-para-3">System design skills - you can design scalable, maintainable systems and articulate trade-offs clearly</li>
<li id="E301" class="qowt-li-1_0 qowt-list x-scope qowt-word-para-3">API design expertise - REST, WebSockets/SSE, and understanding of distributed systems patterns</li>
<li id="E303" class="qowt-li-1_0 qowt-list x-scope qowt-word-para-3">Database proficiency - SQL and NoSQL (DynamoDB, PostgreSQL, OpenSearch), including query optimization and data modeling</li>
<li id="E305" class="qowt-li-1_0 qowt-list x-scope qowt-word-para-3">Testing mindset - you write comprehensive tests and advocate for quality across the team</li>
<li id="E307" class="qowt-li-1_0 qowt-list x-scope qowt-word-para-3">Ownership mentality - you take features from idea to production, proactively identifying and solving problems</li>
<li id="E309" class="qowt-li-1_0 qowt-list x-scope qowt-word-para-3">Strong communication - you can explain complex technical concepts to engineers and non-engineers alike, and write clear documentation</li>
<li id="E311" class="qowt-li-1_0 qowt-list x-scope qowt-word-para-3">Mentorship ability - you enjoy helping others grow and have experience guiding less experienced engineers</li>
</ul>
Nice to Have:
<ul>
<li id="E315" class="qowt-li-4_0 qowt-list x-scope qowt-word-para-3">LLM/AI experience - LangChain, LangGraph, RAG pipelines, prompt engineering, or fine-tuning</li>
<li id="E317" class="qowt-li-4_0 qowt-list x-scope qowt-word-para-3">Production AI systems - experience with LLM observability (Langfuse), token management, streaming, and reliability patterns</li>
<li id="E319" class="qowt-li-4_0 qowt-list x-scope qowt-word-para-3">AWS expertise - Lambda, ECS, DynamoDB, OpenSearch, Bedrock, or similar cloud services</li>
<li id="E321" class="qowt-li-4_0 qowt-list x-scope qowt-word-para-3">Streaming architectures - SSE, WebSockets, event-driven systems</li>
<li id="E323" class="qowt-li-4_0 qowt-list x-scope qowt-word-para-3">Fintech/compliance background - AML, sanctions screening, KYC, or regulated industry experience</li>
<li id="E325" class="qowt-li-4_0 qowt-list x-scope qowt-word-para-3">Micro-frontend experience - Module Federation, independent deployability</li>
<li id="E327" class="qowt-li-4_0 qowt-list x-scope qowt-word-para-3">Infrastructure as Code - Terraform, CDK, or similar</li>
</ul>
What Sets Senior Apart
We're looking for engineers who demonstrate:
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<li id="E337" cl

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Senior Full-Stack Engineer - AI Agent Platform

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