Fintech Lab Engineer (Manager or Senior Consultant level) - Fintech Lab - Permanent - London

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EY - Fintech Lab Engineer

The financial services industry continues to undergo a period of unparalleled change. Since the financial crisis, banks and financial institutions have been subject to more stringent regulation, increased supervision and ongoing global economic instability. These changes have come at a cost, prompting institutions to re-evaluate traditional ways of doing business. At the same time, rapid technological advances, including disruptive technologies and digital innovation, are increasing the pressure to maintain a competitive edge, adapt quickly and improve profitability.

The FinTech Lab gives financial services organisations direct access to the latest developments in agentic systems and artificial intelligence, helping them rapidly explore, validate and bring high-value business opportunities to market. We are looking for experienced software engineers who are aware of emerging trends and excited to help clients innovate.

The opportunity

As part of the Lab’s engineering team, you will help shape and evolve our technology stack while rapidly developing prototypes that demonstrate how AI and agentic systems can solve real business challenges. You will research emerging tools, design practical solutions, present recommendations to senior stakeholders and work closely with the wider Lab team to help clients understand, test and adopt new technologies with confidence.

Your key 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 and attributes for success

• A proven record of identifying and implementing emerging technologies
• A strong interest and excitement about new business opportunities in the age of AI
• Demonstrated ability to engage effectively with financial services clients and start-ups, including non-technical stakeholders
• Strong client engagement skills to oversee implementation progress and ensure client satisfaction, with the ability and motivation to build stakeholder understanding and buy-in
• Ability to combine engineering judgement with user-centred thinking, ensuring solutions are technically robust, intuitive and easy to adopt
• Excellent communication skills with the ability to translate complex technical concepts to diverse audiences

To qualify for the role, you must have

1. 4+ years of experience in software engineering and/or technology consulting
2. Experience in at least two modern programming languages such as TypeScript, Python, Java or Go.
3. Proven ability to architect, build and deploy complex agentic systems, including agent-to-agent communication
4. Ability to build auditable agentic systems that can be traced and observed
5. Expertise in developing APIs and microservices
6. Good understanding of frontend technologies such as React and Next.js
7. Experience managing at least one cloud platform, such as Azure, AWS or GCP
8. Experience working with AI development frameworks such as LangChain, foundation model platforms, vector databases, structured outputs, tracing and evaluation techniques
9. Experience applying modern engineering practices, including testing, CI/CD, DevOps, observability, secure development, code quality, architecture reviews and production-readiness
10. Experience designing monitoring approaches, dashboards or evaluation mechanisms to understand the performance and behaviour of AI-enabled systems
11. Strong communication skills to articulate complex technical solutions

Ideally, you’ll also have

• Experience building complex systems, including writing MCP servers
• Experience with spec-driven development and configuring coding-agents
• Experience designing human-in-the-loop workflows, including review, escalation and feedback mechanisms for AI-supported decisions
• Evidence of hands-on experimentation through personal projects, open-source contributions, prototypes or a relevant technical portfolio
• Previous experience in a consulting environment managing client expectations and delivery timelines
• A track record of identifying and capitalising on opportunities with clients

What we offer

We offer a competitive remuneration package where you’ll be rewarded for your individual and team performance. Our comprehensive Total Rewards package includes support for flexible working and career development, and with MyReward you can select benefits that suit your needs, covering holidays, health and well-being, insurance, savings and a wide range of discounts, offers and promotions. Plus, we offer:

• Continuous learning: You’ll develop the mindset and skills to navigate whatever comes next.
• Success as defined by you: We’ll provide the tools and flexibility, so you can make a meaningful impact, your way.
• Transformative leadership: We’ll give you the insights, coaching and confidence to be the leader the world needs.
• Diverse and inclusive culture: You’ll be embraced for who you are and empowered to use your voice to help others find theirs.

Please note

Prior to finalising your application, you will be asked to provide personal information across several dimensions of diversity and inclusiveness. The information you provide is kept entirely confidential and will not be used to evaluate your candidacy. We collect this data to help us analyse our recruitment process holistically and implement actions that promote diversity and inclusiveness. While optional, we encourage you to provide this information to hold us accountable to our goal of building a better working world. Read more about our commitment to diversity and inclusiveness here. We ask because it matters.

If you can demonstrate that you meet the criteria above, please contact us as soon as possible.

Shape your future with confidence.

Apply now.

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