Open Source in Finance Forum London 2025

Open Source in financial services has entered a pivotal new phase. No longer just individual tools and formation projects, key FINOS projects are forming a connected, strategic layer in banking technology stacks and the interdependencies are growing.

This talk explores how projects like Git Proxy, FDC3, the Common Domain Model, Common Cloud Controls, and AI Readiness are building momentum across the industry and how they increasingly rely on each other. What’s emerging is a shared, collaborative infrastructure built by and for the financial services industry.

But with that adoption comes responsibility. We’ll unpack why financial services firms need to invest in contributing to FINOS projects and why it’s important for teams and internal stakeholders to know the Open Source embedded in their systems.

We’ll also highlight the growing importance of Open Source training across the industry, particularly in security and software supply chain practices as fundamental skills for modern engineers.

This is a call to action for more contributors, more maintainers, and more champions. The Open Source stack in finance is no longer optional. It’s infrastructure.

Join us for an engaging lightning session that will delve into the complex challenges of managing Open Source and InnerSource initiatives within a highly regulated landscape. We will examine how to establish effective health assessment criteria that encompass maturity, success, and adoption metrics. This strategic approach empowers organizations to anticipate the evolution of their InnerSource and Open Source projects, equipping them to handle potential breakups—such as allocating InnerSource costs among subsidiaries across different jurisdictions—and promising breakthroughs, including successful transitions from InnerSource to Open Source.
Participants will gain valuable insights into best practices for fostering collaboration, ensuring compliance, and safeguarding intellectual property while driving innovation. Discover how to navigate regulatory complexities and unlock the full potential of Open Source and InnerSource strategies to propel your organization’s growth and adaptability.

Open source thrives on engagement, yet sustaining long-term contributor involvement remains a challenge—especially within large companies. In this talk, we’ll share how we built a strong internal open source community by recognising and rewarding contributors, reinforcing engagement, and fostering a culture of participation. We’ll walk through the strategies we implemented, from career growth opportunities to conference travel incentives, and the use of gamification. In addition, we’ll showcase how we measured the impact of these efforts, demonstrating how recognition fuels retention, innovation, and long-term commitment to open source. Attendees will leave with actionable insights on how to cultivate a contributor-first culture within their own organisations, ensuring open source contribution remains a core part of their company’s DNA.

For many financial institutions, contributing to open source is still harder than it should be. Security, compliance, and process complexity often stand in the way, leaving engineering teams stuck behind internal barriers, accumulating technical debt and missing out on the full benefits of open collaboration. GitProxy helps solve that, providing a secure, compliant, and developer-friendly way to contribute code.

In this session, you’ll hear from two organizations: one just beginning to explore GitProxy and another actively maintaining it. Together, they’ll share share perspectives on the value GitProxy offers, and how multiple banks and tech firms have contributed features, improved security workflows, and shaped a tool that makes open source contribution not only possible, but efficient, auditable, and scalable.

Whether you're just starting your GitProxy journey or looking to deepen your engagement, this talk offers practical guidance and real-world insights to help your organization on its path to secure, compliant, and convenient open source contribution.

James McLeod and Nick Veenhof will discuss pathways for financial institutions to actively contribute to open source. They will explore effective OSPO strategies and innovative approaches such as co-creating open source software together. This conversation will reveal practical methods for financial organizations to overcome traditional barriers, manage regulatory concerns, and build meaningful participation in open source communities.

Open source is transforming the financial services landscape in the UK, from accelerating innovation to enhancing regulatory compliance and reducing vendor lock-in. This talk explores the current state of open source adoption across banks, fintechs, and regulatory bodies, highlighting key trends, successful use cases, and emerging challenges. We’ll touch on the role of open collaboration, the importance of community governance, and how UK institutions are balancing openness with security and compliance. Whether you’re a developer, a decision-maker, or simply curious about the open source shift, this session offers a snapshot of where the industry stands—and where it’s headed.

In this 15-minute talk and live demo, we'll walk through how small failures in financial systems can lead to big inconsistencies—and how Durable Execution helps teams prevent them. We'll simulate a real transaction system under failure conditions and you'll observe how a Durable Execution platform enables the application to overcome them and complete successfully—despite intermittent failures, service outages, and even a crash of the application itself.

If you've ever had to build your own safety nets around stateful operations, this talk is for you.

You'll see how Durable Execution lets developers focus on business rules, not retry loops or recovery glue and why this shift matters for building reliable, maintainable financial platforms.

The demo will use Temporal, an open source Durable Execution platform with broad adoption by the financial industry.

As financial institutions accelerate their digital transformation, developers need robust tools that offer flexibility, scalability, and seamless application deployment. Solutions such as Cloud Foundry have provided a simple way to deploy applications in the cloud. However, with the growing demand for more customisation in the deployment pipeline, modern platforms like Kratix, an open-source framework, can help bring new possibilities.
In this talk, we will demonstrate how Kratix can be used to replicate—and surpass—the experience of deploying applications to the cloud. We’ll explore how Kratix, combined with Shipwright, enables developers to build and deploy applications from source or as pre-built container images with ease. You'll learn how Shipwright supports a variety of build strategies and tools, offering the flexibility to use custom inputs while maintaining a streamlined workflow.
We’ll walk through practical use cases and demos, showing how Kratix and Shipwright can empower developers to achieve frictionless deployment pipelines, optimise developer experience, and simplify DevOps workflows in an open-source, cloud-native environment.