AI-Driven Fintech Lab Engineer

EY; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Flexible working

Career development

Total Rewards package

Health & well‑being

Job summary

EY is seeking a FinTech Lab Engineer in London to shape and evolve our AI-enabled technology stack. You will rapidly develop prototypes, exploring agentic systems, and present recommendations to senior stakeholders.

You will collaborate with the Lab team to help clients test and adopt new technologies with confidence. You will work on defining engineering standards, architecting solutions, and delivering high‑quality, auditable systems.

Qualifications

• 4+ years of experience in software engineering and/or technology consulting.
• Experience in at least two modern programming languages such as TypeScript, Python, Java or Go.
• Proven ability to architect, build and deploy complex agentic systems, including agent‑to‑agent communication.
• Ability to build auditable agentic systems that can be traced and observed.
• Expertise in developing APIs and microservices.
• Good understanding of frontend technologies such as React and Next.js.
• Experience managing at least one cloud platform, such as Azure, AWS or GCP.
• Experience working with AI development frameworks such as LangChain, foundation model platforms, vector databases, structured outputs, tracing and evaluation techniques.
• Experience applying modern engineering practices, including testing, CI/CD, DevOps, observability, secure development, code quality, architecture reviews and production‑readiness.
• Experience designing monitoring approaches, dashboards or evaluation mechanisms to understand the performance and behaviour of AI‑enabled systems.
• Strong communication skills to articulate complex technical solutions.

Responsibilities

• Lead rapid prototype development using cutting‑edge agent‑driven engineering approaches.
• Challenge traditional delivery methods and introduce faster, more automated ways of building software.
• Define and maintain engineering standards across the Lab, including quality, security, testing and production‑readiness.
• Work with clients and internal stakeholders to identify, assess and prioritise high‑value opportunities for emerging technology.
• Architect AI‑enabled solutions that connect data, tools and user intent to automate complex workflows.
• Create intuitive interfaces and human‑in‑the‑loop workflows for supervising and improving AI‑enabled processes.
• Share reusable patterns, lessons learned and technology best practices across EY.
• Manage multiple workstreams effectively through clear planning, prioritisation and communication.

Skills

Emerging technologies

AI innovation

Client engagement

Engineering judgement

User-centred thinking

Clear communication

Tools

LangChain

Foundation model platforms

Vector databases

React

Next.js

Azure

AWS

GCP

CI/CD

DevOps

Observability

Job description

EY is seeking a FinTech Lab Engineer in London to shape and evolve our AI-enabled technology stack. You will rapidly develop prototypes, exploring agentic systems, and present recommendations to senior stakeholders.

You will collaborate with the Lab team to help clients test and adopt new technologies with confidence. You will work on defining engineering standards, architecting solutions, and delivering high‑quality, auditable systems.