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Scaling a Beast: Lessons from 400x Growth in a High-Stakes Financial System

Dmytro Hnatiuk

from Wise (Estonia)

About speaker

Principal Software Engineer @ Wise

Dmytro Hnatiuk is a Principal Software Engineer at Wise, where he has been turning complex challenges into scalable solutions for eight years.

About speakers company

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Abstracts

broad

In today’s high-growth environments, scaling a core system is challenging enough—but it gets even trickier when it’s a financial reporting platform where accuracy and real-time data matter most. In this session, I’ll take you through my journey of scaling such a system from 66 million to over 25 billion records while keeping the data fresh and the numbers accurate.

Drawing from my experience, I’ll outline a strategic, step-by-step approach to tackling scalability challenges that can be applied to any complex system, even if you’re not a database expert. We’ll cover how to optimize application logic to prevent bottlenecks, manage data modularization for better performance, and implement partitioning and archival strategies to keep your system lean and responsive.

This talk is packed with actionable insights, real-world lessons, and practical tips on prioritizing the right performance improvements at the right time. You’ll learn how to navigate the trade-offs between data freshness and accuracy, maintain system integrity under high demand, and avoid the common pitfalls that come with rapid growth.

Whether you’re an engineer, architect, or tech lead working in finance, e-commerce, or any high-stakes field, this session will equip you with the tools to scale your systems effectively without drowning in complexity. By the end, you’ll have a clear framework to tackle your own scalability challenges with confidence—and you might not even need to become a database expert.

Key Takeaways:

Strategic Scalability Framework: Learn a step-by-step approach to scaling systems from millions to billions of records, focused on the most impactful optimizations at each stage of growth.
Balancing Accuracy and Freshness: Discover practical techniques for maintaining high data accuracy and real-time updates in mission-critical systems.
Practical Solutions Without Complexity Overload: Gain insights into managing performance and scalability challenges without getting lost in database internals, using proven strategies that keep your systems efficient and robust.
Real-World Lessons from a 400x Growth Journey: Hear first-hand experiences and lessons learned from scaling a high-demand financial system, applicable to any industry facing rapid data growth.
This session is designed for those who want to achieve significant scalability without sacrificing performance, accuracy, or their sanity. Join me to learn how you can scale your systems smartly, strategically, and with the confidence to handle whatever comes next.

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