The Voice of Tech - London Java User Group meetup

AJE - A JUG for Everyone

Organised by the "A JUG for everyone" community.  Join us if you are passionate about software engineering and knowledge sharing.

Couchbase

Join us for an evening of tech talks, community networking, and good conversations at our next AJE Community Meetup!Whether you're a backend dev, full-stack engineer, or just getting started in tech, this event is a great opportunity to:<ul><li>Hear insightful talks from fellow engineers</li><li>Share ideas and challenges</li><li>Connect with others working in the London tech scene</li></ul>Our goal is to create a friendly and supportive space where technologists can learn from each other — and have some fun along the way. And if you think that public speaking is fun and can enhance your professional growth, why not submit your talk to our <a href="https://sessionize.com/aje" title="https://sessionize.com/aje" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">Call for Papers page</a> For those who cannot make it in person, we will stream the event at <a href="https://www.youtube.com/@DevTalkPlanet" title="https://www.youtube.com/@DevTalkPlanet" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">DevTalkPlanet</a> YouTube channel. Disclaimer:By attending this event, you agree that you are responsible for your own safety and well-being. The organisers are not liable for any injury, loss, or damage that may occur during the event.If food or drinks are provided, please note that we cannot guarantee they are free from allergens. It is your responsibility to check for any allergens before consuming.

Agenda

Door open

Welcome from AJE organisers

Welcome from our host - Couchbase

Technical debt is often seen as a purely engineering issue—but that’s a dangerous misconception.
In this talk, we’ll explore how technical debt is not just "technical": it carries real business risk, impacting speed, flexibility, and long-term value. Yet not all technical debt is bad; in agile environments, it's a natural consequence of moving fast and learning continuously.
Through real-world examples, we’ll reframe technical debt as business debt—something that must be managed strategically. We'll also show how engineers can better communicate the trade-offs of technical decisions, helping the business make smarter, more informed choices.

Technical Debt Is Business Debt

Networking and refreshments

As systems grow more complex, managing interdependent computations at scale becomes a key challenge. In this session, Sergei Nasibian will introduce a graph-based computation paradigm, where computations are modeled as nodes in a directed graph. This allows for efficient partial recomputation, dependency tracing, and optimized execution pipelines. Sergei will provide practical examples from the financial industry, showing how these principles can be applied to real-time scenario analysis, large-scale simulations, and dynamic analytics systems. This session will help attendees understand how graph-based models can streamline the management of complex data flows, improve performance, and enhance traceability in real-time applications—particularly relevant for Data Engineers and Data Scientists working with scalable systems and real-time data.

Scaling Dependency Graphs for Real-Time Computation in Finance and Beyond

We continue networking part in a local pub