Atlassian

To attend enroll here: [https://luma.com/q6kuetpe](https://luma.com/q6kuetpe) Agenda​ ​5 - 5:45: Pizza / Beer ​​5:45 - 6:15: NetApp, what we do, our role in open source - Mariah McLaughlin, NetApp ​​6:15 - 7:00: Unleashing AI in Cassandra 5 - Ritam Das, NetApp ​​7:00 - 8:00: When “Eventually” Meant 11 ms: Designing Deterministic Cassandra Architectures in the Telecom Core - Thomas Elliott, Your Augmented Life Advisory Services ​​8:00 - 9:00: Networking

We will be @ [Phebe's](https://goo.gl/maps/CzpEPSUHWaAELfcM8) (at 359 Bowery--corner of Bowery and E. 4th St) We will be in the back room. Enjoy good bar food and alcohol if you drink. **You will need to order at the bar, there is no waiter service in the back room.** There is a fee of $10.00 to attend this private event. Paypal is asking for slightly more, you can change it down to $10 exactly. Cash is no longer accepted. No tickets at the door. This is a private event.

IMPORTANT: PLEASE USE THE QR CODE SENT TO YOUR EMAIL TO ACCESS THE BUILDING Come show your support for your fellow developers! We’re very happy to bring the community together for an evening of learning and connection. This time, we'll have a community member sharing a use case and, as usual, an Elastic employee sharing their expertise as well. Join us to learn something new and meet others who are passionate about search, observability, and security. **Agenda:** * 5:30 pm: Doors open; say hi and eat some food * 6:00 pm: Agent Builder: Providing Relevant Context for Data Driven Agents", by Kathleen DeRusso, Principal Software Engineer I at Elastic * 6:30 pm: Q&A * 6:40 pm: Improving Search Ranking with LambdaMART and Elasticsearch, by Brandon (Anbang) Wu, Senior Machine Learning Engineer at Quizlet * 7:10 pm: Q&A * 7:20 - 7:30 pm: Networking and event wrap-up **Abstract** **"Agent Builder: Providing Relevant Context for Data Driven Agents"** What are agents? What is context engineering? Join us as we dive into the importance of context engineering for providing relevant information to agents, and how to build grounded agents using Elastic Agent Builder. **"Improving Search Ranking with LambdaMART and Elasticsearch"** Quizlet’s search extended manual Elasticsearch boosts with a Learning-to-Rank (LambdaMART) model. Using query, engagement, and content features, we trained on study signals and validated with A/B tests, achieving measurable lifts in study rates: +3.42% on blended pages, +1.86% on sets pages, and +1.05–1.81% in downstream outcomes. This talk shares how we combined a custom ML re-ranker with Elasticsearch results—covering training data design, offline evaluation, latency, and model interpretability—and offers guidance for Elastic users to go beyond boosting and improve ranking quality. **Where**: Elastic NYC Office 1250 Broadway, Floor 16, Training Room New York, NY 10001 **When**: Feb 19th \| Doors open at 5:30 PM If you’re a long-time Elastic user or just starting your journey, this is the perfect opportunity to share ideas, meet new people, and get inspired. See you there!

**[REGISTER ON LUMA](https://luma.com/u5c711nm)** Future of DevEx series was first launched in New York in 2025 as part of Tech Week, and after running the event across Toronto, SF and LA, we're finally bringing it back! ​This isn’t just another meetup. It’s part of a growing movement where engineers, founders, and toolmakers come together to define what’s next for developer workflows. ​Join [Deskree](https://deskree.com/), [PostHog](https://posthog.com/), [Arthur](https://www.arthur.ai/) and [Grafana](https://grafana.com/) to see how AI is changing the way we build. **[REGISTER ON LUMA](https://luma.com/u5c711nm)** *** ## ​**What we will cover** * ​How AI is reshaping developer workflows * ​Real-world patterns for observability, monitoring, and feedback loops * ​How teams are structuring workflows to move faster with fewer people * ​Where current approaches break down, and what’s actually working in production ## ​**What you’ll learn** * ​Practical approaches you can apply to your workflows * ​How leading dev tools think about the next 12–24 months * ​How to design workflows that scale with AI, not against it ​Come to learn, get new insights, and connect with like-minded builders. **[REGISTER ON LUMA](https://luma.com/u5c711nm)** *** ## ​Agenda * ​6:00 PM: Arrivals + Food & Drinks * ​6:50 PM: Tech Talks from Deskree, Arthur, PostHog and Grafana * ​Special guest: Christian Rocha, founder of **[Charm](https://charm.land/)** * ​8:00 PM: Continued networking ​If you're an engineer or a technical founder, this event is THE PLACE for you to learn where developer workflows are headed. **[REGISTER ON LUMA](https://luma.com/u5c711nm)**

Classes held online due to coronavirus. Contact us for more information. Learning to read and write in Bengali. Both for beginners studying Bangla or (separately) Bengali speakers who want to learn or improve their reading and writing.

Join us for an evening of networking, discussion, and all things Cassandra! Please register for this event [here](https://luma.com/q6kuetpe). **Agenda:** ​5:00 - 5:45 pm: Pizza / Beer ​​5:45 - 6:15 pm: NetApp, what we do, our role in open source - Mariah McLaughlin, NetApp ​​6:15 - 7:00 pm: Unleashing AI in Cassandra 5 - Ritam Das, NetApp ​​7:00 - 8:00 pm: When “Eventually” Meant 11 ms: Designing Deterministic Cassandra Architectures in the Telecom Core - Thomas Elliott, Your Augmented Life Advisory Services ​​8:00 - 9:00 pm: Networking **Speaking Sessions:** **​NetApp, what we do, our role in open source - Mariah McLaughlin** ​Mariah is a Developer Advocate at NetApp Instaclustr with a focus on developing educational content and building community around Apache Cassandra. ​ She will discuss NetApp Instaclustr’s managed platform and their role as an open source contributor in the Apache Cassandra community **​Unleashing AI in Cassandra 5 - Ritam Das** ​Ritam Das is a Cloud Solutions Architect at NetApp Instaclustr helping customers consume open-source data platforms like Cassandra, Kafka, PostgreSQL, OpenSearch and more. ​ Ritam will discuss enhancements to Cassandra 5, its AI capabilities, and what it has enabled enterprises to do at scale. **​** **When “Eventually” Meant 11 ms:Designing Deterministic Cassandra Architectures in the Telecom Core - Thomas Elliott** ​Thomas Elliott has had a 25-year career in delivering distributed software systems whose work spans early Cassandra OSS deployments in mobile core networks and modern deterministic data foundations for AI. As Head of AI and ML Systems at BioSole International, he focuses on using Cassandra to encode data dependencies that enable reproducible, auditable, and constrained AI reasoning. ​Since the early days of the Cassandra Open Source project, it has been recognized as a critical component in the evolution of telecom infrastructure, particularly mobile core networks. This talk traces how early design constraints shaped architectural decisions in large-scale deployments. It is a story told across three cities in the Persian Gulf, under tight launch timelines, geopolitical complexity, and read-after-write visibility requirements that had an upper limit of 11ms.