Big Data

Signing up is via [LUMA](https://luma.com/k8aoobxy)[.](https://luma.com/r8xfehz3) https://luma.com/k8aoobxy

​Join us for a special morning bringing together founders, investors, operators, and ecosystem leaders shaping the future of Defense Tech in Israel and beyond. ​Hosted by Fusion, MAFAT for Startups, and Pearl Cohen, this event will explore how the next generation of defense and deep-tech startups are being built, funded, and scaled in a rapidly changing global landscape. We’ll discuss: * ​Emerging trends in Defense Tech and dual-use innovation * ​What investors are looking for in the sector today * ​Lessons from founders building in complex and regulated markets * ​How startups can work with governments, enterprises, and defense organizations * ​The opportunities created by AI, autonomy, cyber, robotics, sensing, and next-generation infrastructure ​The event will feature a keynote discussion, founder conversations, and an investor panel with leading voices from the Israeli innovation ecosystem. *** # ​Agenda ## ​Opening Hosts * ​Guy Katsovich - Managing Partner, Fusion * ​Guy Lachmann - Senior Partner, Pearl Cohen *** ## ​10:00-10:30 ​Trends in Defense Tech - New Era of Investments ​Speakers: * ​Maj. Chen Ben-David - Head of Innovation Section, IMOD’s DDR&D / MAFAT for Startups * ​Col. Yishai Kohn - Chief Integration Officer, IMOD’s DDR&D *** ## ​10:30-11:15 ​Founders Panel ​Speakers: * ​Dr. Ari Gargir - Founder & CEO, RedC Biotech Ltd. * ​Ido Baron - CEO & Co-Founder, Skapion * ​Michal Mor - Founder, Smart Shooter *** ## ​11:15-12:00 ​Investors Panel ​**Moderator:** Guy Lachmann ​Panelists: * ​Lee Moser - Co-Founder & General Partner, Protego * ​Sarai Bronfeld - Partner, NFX * ​Yoav Knoll - Partner, Kinetica VC ## ​Who Should Attend? * ​Defense Tech founders and entrepreneurs * ​Investors and VCs exploring dual-use technologies * ​Innovation leaders and operators * ​Government and defense ecosystem stakeholders * ​Deep-tech builders and researchers ​**Attendance is free, but registration is required due to limited capacity.**

TAMI open-fa-sure (Open Night) is a great time to visit the space and get to know how things work. If you want to double check whether someone is in the space, call 03-3726660. ========== TAMI wiki: [https://telavivmakers.org](https://telavivmakers.org) TAMI main Telegram channel: [https://t.me/+0t5M0-jK9iIwZmM8](https://t.me/+0t5M0-jK9iIwZmM8)

בארבעת המפגשים נתרגל תכנות ויישום של מיקרו-בקר ESP32, כולל חיבוריות WiFi ו- Bluetooth, נלמד איך לשלב אותו עם מודלי בינה מלאכותית ונתנסה בפרויקטים אינטגרטיביים המשלבים עיבוד מקומי וענני. למבוגרים/ות ונוער 16+ בעלי ידע ונסיון בסיסי בארדואינו. עלות: 900 ש"ח (ליחיד/ה) תושב חוץ, 850 ש"ח (ליחיד/ה) תושב יהוד שימו לב: לא מספיק להרשם במיטאפ יש להרשם גם בקישור הבא , שם תמצאו גם פרטים נוספים https://link.makelab.org.il/ESP32-AI

באו לתקן כל מה שלא עובד. יותר טוב אם [צרו איתנו](https://docs.telavivmakers.space/welcome) קשר וספרו לנו מה הולכים לתקן ךפני להגיע. Come to fix together It is much better if you [contact us](https://docs.telavivmakers.space/welcome) and tell what do you want to repair before coming.

This month we meet at XSolla Club for another great evening dedicated to expanding your horizons in game development. Have an idea, suggestion, venue, or talk? Reach out to [team@notable.games](http://mailto:team@notable.games/) or fill [this form](https://forms.gle/Y4wq7KCi9NbJEDDV6). We can help find an idea, prepare a talk, and overcome fear of stage. Everyone has something to share! **Agenda** 18:00...18:30 — Meet and greet 18:30...20:30 — The Main Show 20:30...21:00 — Networking and goodbyes **PLEASE NOTE** Although the meetup description and the slides are is in English, the actual talks are given in Hebrew. **Talks** Homo Ludens: How Play Built (and then enslaved) Human Society - By Alon Karmi Nostalgia, Code and The End of the World - Eternal Afternoon making of - By Alex Klexber **Pitch a Game** Erez: Tiltan Origins by The Banana Project [https://ishkarish.itch.io/erez-tiltan-origins](https://ishkarish.itch.io/erez-tiltan-origins)

こんにちは、よろしくお願いします. קבוצת חברים לומדי יפנית חידשה מפגשים, כל הרמות וכל הגילאים מוזמנים להצטרף 一緒に練習しませんか。 נפגשים בקפה לנדוור שרונה ת"א, יום שני 29 ביוני, ב- 18:15. שימו לב! מפה למטה יכולה להיות לא מדויקת, יש לחפש קפה לנדוור שרונה! במפגש הקרוב - בחלק הראשון תרגול יפנית לרמות מתחילים-בינוני (עבור רמה מתקדמת תיפתח פינה שיחה בסגנון חופשי). בחלק השני משחק קאהוט אינטראקטיבי משותף אשמח אם תיידעו אותי מראש מי מתכנן להגיע, יעזור לי מאוד בהכנות. ומותר גם להגיע בלי להודיע :) לאון

***[IMPORTANT NOTICE registration is HERE](https://luma.com/j8czeuvr)*** Join **Aerospike, Start.io, and Contentsquare** for an evening of deep technical talks and peer-level discussion on the real trade-offs behind operating modern real-time systems in production - where tail latency, throughput predictability, scalability, and cost efficiency are constantly in tension. This event will move past theory and into hard-earned production lessons: scaling beyond RAM constraints, migrating high-throughput workloads from Redis to Aerospike, designing architectures driven by real cloud cost models, and uncovering the non-obvious pitfalls of migrating real-time systems from AWS to GCP. Topics range from VPC architecture and traffic steering differences to NVMe and local SSD behavior, and why familiar operational playbooks often fail across clouds. This event is designed for engineers and architects already running latency-sensitive, high-scale systems - where milliseconds matter, growth is relentless, and infrastructure decisions directly impact performance, reliability, and cost. ​ **Agenda** **​17:30 – 18:00 - Welcome drinks & networking** ​**18:00 – 18:10 - Opening Remarks – Speed vs Capacity: Designing Data Systems for Real-Time Scale** *Oshrat Ben-Avi Zabludovitz, Israel Country Manager, Aerospike ​* **18:10 – 18:30 - Scaling Past RAM: Architecture Lessons from Our Redis-to-Aerospike Migration** *Ilan Huchansky, Data Platform Team Leader, Start. io* ​As Start.io scaled, our legacy Redis-based architecture for the user-profiles database reached significant operational limits, particularly during high-traffic periods, node failures, and scaling events. To maintain our strict performance SLAs while reducing operational overhead, we embarked on a search for a more robust, cost-effective NoSQL solution. In this session, we will share the architectural lessons learned while evaluating the database landscape - including our comparisons with alternatives - and our ultimate migration to Aerospike’s Hybrid Memory Architecture. We’ll discuss how we moved past RAM constraints to achieve sub-millisecond performance at massive scale without compromising on availability or data consistency. ​ **18:30 – 18:50 - Boosting Cost Efficiency with Cost-Aware Architecture** *Doron Hoffman, Chief Architect, Contentsquare* ​ In this session, we explore the critical role of cost-aware architecture in achieving optimal cost efficiency for modern software systems. As organizations increasingly rely on cloud services, microservices, and distributed computing, understanding and managing costs becomes paramount. ​We’ll discuss the shift from traditional architecture to cost-aware design and examine how architectural decisions directly impact operational expenses. Through a real-world example, we’ll share lessons learned from evaluating multiple cloud providers and their services using cost models and how rearchitecting with cost as a first-class concern made a measurable difference. ​Attendees will gain practical insights into designing cost-efficient systems that balance performance, scalability, and financial constraints, enabling more sustainable growth. ​ **18:50 – 19:10 - The Latency Leap: Hard Lessons in Migrating Real-Time Systems from AWS to GCP** *David Gerchikov, Senior Software Engineer, Aerospike* ​ Moving a stable web application between clouds is challenging; migrating a high-throughput, real-time system is far more delicate. When heartbeats are measured in milliseconds, the “invisible” differences between AWS and GCP—from VPC architecture to NVMe and local SSD behavior—can determine whether a migration succeeds or fails. ​This session goes beyond basic service mapping to explore the real friction points of moving a real-time engine from AWS’s regional model to Google Cloud’s global fabric. We’ll cover networking and traffic-steering gotchas, why AWS operational playbooks often don’t translate, and how storage lifecycle constraints in GCP Local SSDs force changes in node management to preserve predictable performance and reliability. ​ **19:10 – 20:30 - Networking and fun** ***[IMPORTANT NOTICE registration is HERE](https://luma.com/j8czeuvr)***

Join us for a professional meetup where we dive deep into the world of open source, explore how to navigate complex codebases, and examine the future of software development in the age of AI. The event will be hosted at the Academic College of Tel Aviv-Yaffo and will conclude with the annual members' assembly of "HaMakor" – the Israeli association for the promotion of open source. Come to learn, contribute, and connect with the community. **Agenda** **17:30 \| Gathering and Mingling** **18:00 \| How to Navigate an Existing Codebase / Igor Khanin\, Backend Engineer at Fireblocks** In our studies, we are used to writing everything from scratch, but in the real world and in open-source projects, the true challenge is understanding complex, existing codebases. In this talk, Igor will share practical techniques for code exploration and explain why this skill is even more critical in the era of LLMs. **18:30 \| 3 Scenarios for the Future of Software Development / Eran Shlomo\, Cofounder & CEO at flowpad** How are AI tools fundamentally transforming the software engineering profession? In this talk, we will analyze three potential scenarios for the near future of software development—from changes in how we write code and the automation of testing and integrations, to the evolving role of developers on the team. **19:15 \| HaMakor Association Members' Assembly** An opportunity to get to know the association's activities up close, influence its goals, and become part of the central voice for open source in Israel.

# Let’s Play: **AWS BuilderCards Night** **Sunday, Jul 5, 2026** **6:00 PM – 20:30 PM IST** **AWS Floor 28, Tel Aviv** This time we’re bringing something fun and different a night of **AWS BuilderCards**! We’ll sit together, play AWS-themed card games, and spark conversations around cloud topics in a relaxed, social way. No slides, no lectures just learning, networking, and fun. And here’s the best part: Everyone who joins will receive their **own AWS BuilderCards game box** to take home! **18:00 – 18:30** — Networking & Welcome Grab a drink, meet fellow builders, and settle in. **18:30 – 20:15** — AWS BuilderCards Play Sessions Learn, laugh, and challenge each other through the AWS BuilderCards game. **20:15 – 20:30** — Wrap-Up & Giveaways Closing notes, and each attendee takes home their game box. * Learn directly from **Mo Kamioner**, an AWS expert for BuilderCards. * Connect with fellow AWS builders in a casual, game-night setting. * Test your cloud knowledge (and learn new tricks) while playing. * Go home with your personal deck of BuilderCards. *** Seats are limited save your spot early!

This meetup is an advanced one! We will be presenting all sorts of complicated networking, identity, AI and platform engineering solutions established on AWS infrastructure! **What To Expect?** * **Pizza and beer!** * **Cool Swag** * **Awesome Speakers** **Agenda:** 18:00-18:30 **\- Networking\, beers and pizza** 18:30-19:00 **\- Talk 1:** **AI didn’t Wait for Security - Now What?** Speaker: [Ran Isenberg](https://www.linkedin.com/in/ranbuilder?utm_source=share_via&utm_content=profile&utm_medium=member_ios) , AWS Hero & Principal Architect @Palo Alto Networks & [Stav Ochakovski](https://www.linkedin.com/in/stav-ochakovski?utm_source=share_via&utm_content=profile&utm_medium=member_ios) ,AWS Hero & Senior DevOps Engineer, Eon. AI didn't wait for your security review. Developers are already using agentic AI, coding assistants, agentic skills, and MCP servers to write, review, and ship code, often without shared security standards or governance. In large orgs, this becomes chaotic tool sprawl: multiple IDEs, many agents, inconsistent rules, and rising risk. The instinctive reaction is to block AI tools entirely. That approach fails fast: developers work around it, security loses visibility, delivery slows, and risk grows. This talk offers a better path: treat AI as a first-class platform citizen. Drawing on platform engineering principles, you'll learn how to build centralized MCP guardrails, a curated agentic skills catalog, and reusable agentic blueprints, backed by AI SDLC frameworks that govern AI usage while accelerating delivery of AI-powered services. 19:00-19:30 **\- Talk 2: No Secrets Attached: AWS as Your OIDC Provider** Speaker: [Omer Cohen,](https://www.linkedin.com/in/omercohen?utm_source=share_via&utm_content=profile&utm_medium=member_ios)Head of Security, Descope Stop putting secrets in Lambda. This talk shows how to use AWS IAM outbound identity federation so a Lambda function can mint a short-lived JWT with sts:GetWebIdentityToken, verify and inspect it, and use it to authenticate to Snowflake, MongoDB Atlas, and a cross-account API Gateway. You will leave with a practical architecture, working code, and a clear understanding of where this pattern shines and where the integration edges still are. Hosted by Descope

How Claude-powered systems actually get hacked. We'll go straight into the attacks people are running right now: prompt injection, jailbreaks, agent and tool exploits, and what red-teaming the Claude ecosystem really looks like. 🍕 **18:00 – 18:30** · **Gathering, Pizza & Drinks** 📣 **18:30 – 18:45** · **Welcome + Latest Claude Updates** · Organizers 💻 **18:45 – 19:15** · **JavaScript Is All You Need: Exploiting Agentic Workflows for API Key Theft** · Eden Katz, GenAI Security Tech Lead @ Alice. Building with AI APIs? This one matters. Alice's research shows that API key creation on platforms like Anthropic relies on cookie-based auth alone — so a malicious browser extension or a compromised agent skill can silently mint a new key and ship it elsewhere. No MFA, no warning, no expiration. As agents get trusted with autonomous code execution and client-side access, the line between safe tool use and serious vulnerability collapses. JavaScript really is all you need. 👾 **19:15 – 19:45** · **Securing coding agents: Unpacking Threats and Defences** · Bar Kaduri, Principal researcher @ Capsule Security *AI coding agents like Claude Code, Copilot, and Cursor now write, execute, and ship code with unprecedented autonomy, often straight to production. But this privileged access opens a unique attack surface, as recent incidents like prompt poisoning and deleted databases reveal. This session breaks down the real-world threats facing coding agents and delivers practical, actionable defences for securing your AI-assisted development pipeline.* 🍻 **19:45 – 20:00** · Drinks & Geek Out

TAMI π is a curated meeting, workshop or presentation about a topic in math. It happens every two weeks at TAMI. The event is hosted by a different person each time. You can come, learn topics and share ideas in an open and informal atmosphere. This time Alon Friedkin will talk about the [Black-Scholes model](https://en.wikipedia.org/wiki/Black%E2%80%93Scholes_model). For proposing a presentation or topic you can drop us a line. תאמי פי הוא מפגש אוצר, סדנה או מצגת על נושא במתמטיקה. זה קורה כל שבועיים בתאמי. את האירוע מנחה אדם אחר בכל פעם. תוכלו לבוא, ללמוד נושאים ולחלוק רעיונות באווירה פתוחה ונעימה. הפעם אלון פרידקין ידבר על [מודל בלאק-שולס](https://en.wikipedia.org/wiki/Black%E2%80%93Scholes_model). להצעת מצגת או נושא ניתן לפנות אלינו.

ערב אחד, אווירה ביתית, שיחה פתוחה. דני בית-אור מגיע לביקור קצר מקליפורניה ומארח מפגש אינטימי על השקעה מרחוק בנדל״ן האמריקאי — היכן משקיעים היום, איך נכנסים נכון, ומה באמת חשוב לדעת לפני שמתחילים. ***הרשמה: https://simplydoit.net/etn/june2026*** אני חי בקליפורניה ופועל למעלה מ-20 שנה כמשקיע נדל״ן, ולאורך הדרך סייעתי למאות משקיעים לרכוש אלפי נכסים בלמעלה מ-40 ערי מטרו שונות בארה״ב. זהו מפגש ביתי בסגנון שיחה פתוחה — באווירה אינטימית ומספר מקומות מוגבל. לא הרצאה ולא מצגת, אלא שיחה כנה סביב כל מה שמטריד אתכם לפני הצעד הראשון, וגם אחריו. בואו עם השאלות שלכם. **על מה נדבר** * היכן כדאי להשקיע — אילו שווקים מעניינים היום * איזה סוג נכסים — בית פרטי, דופלקס או מולטי-פאמילי * איך משקיעים מרחוק, מבלי לעלות על מטוס * התנהלות עם חברות ניהול נכסים * זיהוי חששות וחסמים — ואיך מתגברים עליהם * ריביות ומשכנתאות, ומה זמין למשקיע זר * היכן יש הזדמנויות מעניינות במצב השוק הנוכחי * רכישה והחזקת נכסים מישראל * שאלות, תשובות, וחוויות אישיות — ועוד ***הרשמה: https://simplydoit.net/etn/june2026*** **מתי ואיפה** יום שלישי, 16 ביוני, בשעה 20:00. ראש העין אירוח ביתי, קפה וכיבוד קל. הכתובת המדויקת תימסר בנפרד לנרשמים. ההשתתפות ללא עלות, בכפוף להרשמה מראש ולמספר מקומות מוגבל. **קצת עליי — דני בית-אור** עברתי לארה״ב ב-2004, אחרי שהתחלתי להשקיע בנדל״ן אמריקאי עוד כהייטקיסט צעיר בתל אביב. מאז אני ממשיך להשקיע באופן אישי ומסייע למאות רבות של משקיעים לרכוש אלפי נכסים בלמעלה מ-40 ערי מטרו שונות. ב-2008 צלחתי את משבר הנדל״ן הגדול, ואת הלקחים שלמדתי אני מיישם עד היום עם הלקוחות שלי — לא רק כדי להתחיל בהשקעות נדל״ן, אלא כדי להמשיך ולבנות פורטפוליו פיננסי שלם. ***הרשמה: https://simplydoit.net/etn/june2026*** **חשוב לדעת** מספר המקומות מוגבל. ברגע שנגיע למקסימום ההרשמות תיפתח רשימת המתנה, שתתמלא במקרה של ביטולים. אם לא הצלחתם להירשם — שלחו הודעה ל-meet@simplydoit.net או בוואטסאפ. מי שלא יוכל להגיע אבל מעוניין להיפגש, אהיה זמין סביב תאריך ההרצאה לפגישות אישיות. לתיאום ויצירת קשר: WhatsApp / טקסט / שיחה — ‎+1 650-440-5544‎ · dani@simplydoit.net ***הרשמה: https://simplydoit.net/etn/june2026***

**Practical Curiosity: Learning from Everyday Data** How do we actually get better at utilizing our day-to-day data? Fancy dashboards and complex models might look nice and draw attention, but that’s not where most of us spend our time. In fact those shiny outputs frequently sit unused, while the real insights are drawn from the analyst’s daily practice. Sometimes it’s as simple and as powerful as noticing that a segment is shrinking, a channel is underused, or certain links keep getting all the clicks. There’s many different places that the spark of insight can come from, but you have to keep your head in the data and know where to look. In this session, we’ll explore real-world examples of how segmentation, testing, and click behavior can uncover practical digital marketing opportunities. You’ll leave with inspiration for your own use cases, along with a few simple ways to ask better questions, spot meaningful patterns, and make smarter decisions without overcomplicating it. **About Our Speaker:** [Elaine Armbruster](https://www.linkedin.com/in/elainearmbruster/) is a Director of Digital Experience at the [American Diabetes Association](https://diabetes.org/), where she focuses on using data and insights to create smarter, more effective digital experiences. A lifelong Columbus resident, she has built her career in email marketing and the broader digital user journey, and is finding she most enjoys working in the messy middle where systems, data, and big ideas don’t quite line up yet. Thanks to our 2026 sponsors: [Clarivoy](https://www.clarivoy.com), [What Box Consulting Group](https://www.whatboxconsultinggroup.com), [Conductrics](https://www.conductrics.com), and [Piwik PRO](https://piwik.pro) More info at [cbusdaw.com](https://cbusdaw.com)

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

Most people use LLMs by feel: ask a question, read the answer, decide whether it “seems good,” and move on. That works for casual use. It does not work when you are building software, automating workflows, writing important documents, or relying on AI for anything that needs to be repeatable. In this talk, we’ll look at how to improve and evaluate the inputs and outputs of LLMs using practical measurement techniques. We’ll cover how prompt changes affect results, how to compare outputs, how to build simple evaluation sets, and how math-based methods like similarity scoring can help you move beyond guesswork. This will be beginner-friendly, so even if you don't know anything about AI, you should get something out of it. However, this will be a little more technical than our intro talks. You do not need to be an AI researcher, but programmers and technically curious attendees will get a lot out of it. We’ll cover: * Why “it looks good” is not enough * How to improve prompts by changing the input, context, and constraints * How to compare LLM outputs more systematically * Basic evaluation techniques for accuracy, consistency, and usefulness * How embeddings, cosine similarity, and scoring can help evaluate results * Where automated evaluation works — and where humans still need to stay in the loop By the end, you’ll have a practical mental model for treating LLMs less like magic and more like systems you can test, measure, and improve. LOGISTICS AND PARKING: The talk starts at 7:00 PM. The first half hour is reserved for everyone to get set up and mingle. Free pizza and drinks! The cheapest parking option is to find street parking, which will only cost you a few bucks. Otherwise, park in the nearby veteran's museum lot for $8. It's highly recommended you avoid the nearby $15 garage parking.

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

You can sleep in on the Sesquicentennial (observed), we’re shifting to the following Friday. But join the local UX community for a chat and some biscuits to catch up. If you were in CA for Figma Config, tell us all the lines and you can tell me how I can animate an SVG without coding it by hand, and why I’d even want to. Thanks to the team at Nationwide of supporting the group.

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/azure-cbus-2026/

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9