For the JavaLand x Women in Tech series, Ixchel Ruiz has interviewed female speakers of the upcoming JavaLand 2026 at Europa-Park. These speaker spotlights give you the opportunity to get to know the speaker better and get their valuable input and insight on current topics. You can find more background information regarding the Women in Tech movement as well as Ixchel’s motivation behind it in our previous article.
Session Title:Deep Dive into Data Streaming Security
Time: Tuesday, 10.03.2026 | 13:00 – 13:40
Room: Salle Petit Paris
Language: English
Focus: Security, Data Streaming, Distributed Systems
Every day, we trust systems we rarely see. When you pay at a supermarket, your card data is protected by layers of security working quietly in the background. When data moves through modern systems at high speed, similar invisible mechanisms are expected to keep it safe.
But what happens when data never really stops moving? In streaming systems, decisions are made in real time, data flows continuously, and there is little room for error. Security cannot be something you add later. This session starts from that reality and explores what it takes to secure data pipelines when speed and scale are non-negotiable.
Meet the Speaker: Olena Kutsenko
Olena Kutsenko is a distinguished Staff Developer Advocate at Confluent, a recognized expert in data streaming and analytics with nearly two decades of experience in software engineering. Her passion lies at the intersection of data, open source technologies, and security, where she helps organizations build resilient, scalable, and secure streaming platforms.
Olena’s journey in tech is marked by a commitment to empowering developers through education and advocacy. She is an international speaker, AWS Community Builder, and a dedicated mentor who actively supports women and underrepresented groups in technology. Her expertise spans the full spectrum of streaming architectures, with a focus on practical security challenges that arise in real-time data environments.
Why This Conversation Was Brought to JavaLand
Data streaming now powers everything from fraud detection and real-time analytics to patient monitoring and order fulfillment. Platforms like Apache Kafka have become central infrastructure in many organizations. Yet many of these platforms are not secure by default.
This session was created to share practical, experience-driven insights into what can go wrong when security is overlooked. Real-world incidents make the risks tangible. In one case, a publicly exposed Kafka broker leaked 17GB of customer data in just two hours. In another, years of real-time delivery information were left accessible on the internet.
The goal of the talk is not to create fear, but to build understanding. By walking through common pitfalls and real failures, the session helps developers and architects design streaming systems that remain secure even under high speed and scale.
The One Idea She Wants You to Take Home
The core message of this session is simple and firm: in data streaming systems, security is not a feature you add later. It is a property you design into every boundary where data flows.
Attendees will learn how encryption in transit and at rest, access control, monitoring, and key management work together to form a secure streaming architecture. The session also explores real trade-offs, such as disk encryption versus end-to-end encryption, the role of field-level and envelope encryption, and the realities of using customer-managed keys in regulated industries.
By the end of the talk, the audience should be able to identify security blind spots in their own systems and take concrete steps to protect the data moving through them.
Her Perspective: Advice from a Woman in Tech
Olena’s perspective on building a career in tech is grounded in intention and ownership. She advises women and all aspiring technologists not to wait for someone else to define their path. Instead, experiment, explore different ideas, and take charge of your own growth and direction.
She emphasizes the importance of community and support—both receiving and offering it. Growth in tech, especially in complex fields like security and data streaming, is rarely a solo journey. Learning happens faster and more sustainably when knowledge and experience are shared openly.
This mindset mirrors the session’s technical message: strong systems, like strong careers, are built through thoughtful design, collaboration, and attention to details that are easy to overlook.
Why JavaLand is the Right Place for this Talk
JavaLand brings together developers who care deeply about how systems behave in the real world. It is a place where practical experience, hard lessons, and honest questions are welcomed.
Olena is especially looking forward to networking with attendees and fellow speakers, learning about the challenges others face, and exchanging ideas. Those conversations often prove just as valuable as the sessions themselves, especially in fast-evolving areas like streaming security.
Join the Conversation
This session invites you to take a closer look at the data flowing through your systems and the assumptions you make about its safety.
If you are building, running, or scaling streaming platforms, this talk will help you see where things can go wrong and how to design security that holds up under pressure. Bring your questions, your experience, and your curiosity to JavaLand 2026, and be part of the conversation.
This article’s grammar and syntax were refined using ChatGPT and DeepL. The content reflects the speaker’s ideas, hopes, and statements.
