Computer Engineering

**About the Speaker** **Simon Ritter** With over a decade of experience as Deputy CTO at Azul Systems, our speaker has helped shape the adoption of Java and JVM technologies across the global developer community. A recognized expert in Java and open source, he is passionate about advancing developer productivity, application performance, and innovation throughout the software ecosystem. **Agenda** **Keeping Your Java Hot by Solving the JVM Startup and Warmup Problem** Java bytecodes and class files deliver on the original vision of “write once, run anywhere”. Using a Just-in-Time (JIT) compiler allows JVM-based applications to compile only the code that’s used frequently and optimise it precisely for how it's used. Using techniques like speculative optimisation can often deliver better performance than static, Ahead-of-Time (AOT) compiled code. However, this flexibility and performance come at a cost. Each time the JVM starts an application, it must perform the same analysis to identify hot spots in the code and compile them. This is referred to as the application warmup time. In this session, we’ll look at several approaches to alleviating or even eliminating this problem. Specifically: · Static compilation of Java code ahead-of-time (AOT). Specifically, the Graal native image approach · Generating a JIT compiler profile of a running, warmed-up application that can be reused when the same application is restarted, eliminating the need for much of the JIT compilation. This will include details of the work of the OpenJDK Project Leyden. · Decoupling the JIT compiler from the JVM for a Cloud environment. Providing a centralised JIT-as-a-Service allows caching of compiled code and offloading the compilation work when new code must be compiled. · Creating a checkpoint of a running application. This includes all application state (heap, stack, etc.) in addition to the JIT-compiled code. Project CRaC will be used as an example. At the end of the session, you’ll be all set to keep your Java hot! **Modern Java Puzzlers** Since JDK 9, Java, as a language, has evolved faster than at any point in its 30-year history. For developers, this is great, as it means we get more new features that make our code more concise and, hopefully, easier to read and understand. All new language features also bring their quirks and possibly unseen consequences. In this fun interactive session, we’ll examine a range of recent language features and pose questions to the audience about how the code works and what it does. We’ll cover many of the new language features from recent releases, including switch expressions, sealed classes and pattern matching. We’ll even look at some curious ways special characters can be used in unexpected ways. The answers will most definitely not always be as you expect!

Ever wanted to TRY playing, but didn’t know where to START? Or coming back to play after a few years? This "ultra-friendly" beginner’s game is for you! We are playing a slow-paced game with an emphasis on building confidence and having fun. Men and women of all ages are welcome. It's way more fun than a gym! Men and women are both encouraged to join in! We believe that football is for everyone! Price pr. session is 17-18 sgd (depending on RSVP's) 4 x session pass 15 sgd pr session. Send a WhatsApp to +65 89267635 to join!

**For ages 14 and above.** Latin Technique class. Solo dance. ### **Address** 80 Chay Yan St, Block 80, Singapore 160080 ### **Schedule** Fridays 9PM - 10PM ### **Booking Information** * Please contact **98225900** to find out how to book this class. * The instructor will reach out to you once you've booked the class.

These classes are not for first timers, but for climbers who want to build a strong foundation in bouldering to climb more intuitively. The classes will consist of: * 90 minute guided session * Guided mobility warm-up * Basic climbing techniques based on one of their five modules:Footwork, Body Positioning, Dynamic Movement, Route Reading, and Other Climbing Techniques ### **Address** 61 Robinson Rd, #05-03/04, Singapore 068893 ### **Schedule** Fridays 630PM - 8PM ### **Booking Information** * Please contact **98225900** to find out how to book this class. * The instructor will reach out to you once you've booked the class.

• Warm up (For example, Dynamic warm ups, Play using half the court, Jogging) • Basic Footwork Exercises (For example, Front-Back footwork, Front-Two footwork) • Basic Skills (For example, Lifting in both front, netting etc). Our methods combine the Technical, Physical and Strategic requirements of badminton to parallel realistic game-play where quality and effectiveness of training are not compromised. • Individualized skill training – Students discuss the techniques that they wish to refine with the coach and proceed to work on them. • Match play with strategic guidance. ### **Address** Toa Payoh East Community Club, 160 Lor 6 Toa Payoh, Singapore 319380 ### **Schedule** Fridays 730PM - 930PM ### **Booking Information** * Please contact **98225900** to find out how to book this class. * The instructor will reach out to you once you've booked the class.

We had a badminton session at **Braddell Heights Community Club, behind NEX Shopping Mall,** on Friday night **12th Jun 2026**. Welcome all Intermediate players to join us for some badminton work out. * 7:30pm - 9:30pm * Intermediate Players. * Court 2 * 2 hours per session * S$10 per session * Shuttles provided (RSL Supreme) * Location: 50 Serangoon Avenue 2, #01-01, Singapore 556129 * Do join us if you are available.

⚠️ **REGISTRATION IS REQUIRED VIA [THIS LUMA FORM](https://luma.com/s0txhgfy)**[ ](forms.gle/saLWmbr5XbwUX8Jp8)⚠️ SHELLGym is the regular cybersecurity workout you have been looking for! Whether you're just starting out and need some exercises, studying for a cert (hint: OSCP), looking at CTF challenges, or developing something cybersecurity-related (maybe your own automated tools?), SHELLGym aims to help you progress in picking up practical cybersecurity knowledge and skills. Come and go as you please, work on your own stuff with like-minded individuals, or just have fun during the workout! **AGENDA** Linux Forensics and Reverse Engineering basics: * Triaging in Linux * Step-by step IDA * Step-by-step gdb * Guided walkthrough on selected real-life binary **⚠️ NOTE** Bring your own laptops (and laptop chargers) with pre-installed Linux VM. Please also download IDA Free ([Link to Guide](https://hex-rays.com/ida-free)) before the session. **VIRTUAL SHELLGyms in JUNE** (by request) Hosted on Discord, do approach KK or the Div0 Crew for access **TRAINER** **KK Tan — Founder, counterShell** As a mid-careerist convert to cybersecurity, **Tan KK** picked up his practical skills through getting OSCP certified and by participating in a variety of CTFs. In his career at CSIT, he performed a variety of red-teaming and vulnerability research roles and established the Cyber Training School at CSIT as the Lead Instructor. Besides the OSCP certification, KK is also OSCE and OSEE certified, and has a Bachelor's degree in Social Science (Psychology). He now sees psychology as a field of study where you fuzz humans until they produce unexpected behaviour. **CO-ORGANISERS & VENUE SPONSOR** * [CyberSG TIG Collaboration Centre](https://www.linkedin.com/company/cybersg-tig-collaboration-centre) * [BLOCK71](https://block71.co/) **IMPORTANT NOTICES** * Code of Conduct: [https://www.div0.sg/code-of-conduct](https://www.div0.sg/code-of-conduct) * Terms of Use & Disclaimer Notice: [https://www.div0.sg/terms-of-use-disclaimer-notice](https://www.div0.sg/terms-of-use-disclaimer-notice)

**Dates:** * 13 June 2026 * 27 June 2026 * 11 July 2026 * 25 July 2026 **Timing:** 2pm onwards **Venue:** HackerspaceSG **Address:** Textile Centre, #08-10, Singapore 199018 ​We'll be hanging out to practice some LeetCode questions together. **\#\# No food provided \#\# Bring your laptop \#\#** # ​Format: * ​Pick a random LeetCode question (easy or medium). * ​One volunteer will connect to screen and attempt the question within 40 minutes. * ​Rest of the group will either role-play as interviewer, collaborator or just observe. * ​At the end of the attempt, the group will provide feedback to the volunteer. # ​Format of Feedback: ## ​Soft skills * ​Ask good questions? * ​What should be talked about? What should demo thru code? ## ​Technical feedback * ​Quality of execution. # ​About JuniorDev SG: ​JuniorDevSG is a developer interest group that focuses on providing a place for junior developers to learn and network with each other. ​At the same time, we seek to be a support system to help junior developers break into tech, navigate their careers as well growing them to one day become senior developers or tech leaders in the tech industry.

Prostate cancer is the most common cancer among men in Singapore. Most men have no symptoms in the early stages — and by the time they do, it may already be advanced. **Early detection saves lives. And it starts with knowing your risk.** This May, take the most important step for your health and join us for a free, expert-led talk by **Dr. Lim Huat Chye Peter** — one of Singapore's most respected urologists and founder of the Society for Men's Health (Singapore). **📅 Date:** Saturday, 13 June 2026 **🕑 Time:** 1:30 PM – 4:00 PM **📍 Venue:** Farrer Park Hospital, Connexion, #16-06 (Viv Hall) **💰 Admission:** FREE **If you're a man over 40, this talk is for you.** Most men avoid talking about their health — until it's too late. Don't wait for symptoms. Prostate cancer is highly treatable when caught early, but the window matters. This is your chance to get straight-talking, expert guidance in a relaxed, open setting where all questions are welcome. **What you'll learn:** * What prostate cancer is and how it develops silently * Who is at risk — and why men over 40 need to act now * When and how to get screened, and what tests to expect * Treatment options and the latest advances in urological care * How to have the conversation with your doctor — and what questions to ask Come alone, or bring a father, brother, husband, or friend. The men in your life need to hear this. **Seats are limited. This event is free — but your health is priceless. Register now before it's too late.**

**Register here:** https://luma.com/fongxt81 🚀 What does it mean to lead, build, and adapt in an AI-enabled world? Women Devs Singapore is excited to collaborate with Zenika for an insightful evening exploring the intersection of leadership, product thinking, and AI with our guest speaker, Jolyn Chuah. As AI becomes part of everyday work, the questions that matter most are still deeply human: ✨ Are we creating environments where people can do their best work? ✨ Are we solving real problems or simply shipping solutions? ✨ Are we approaching change with curiosity rather than fear? In this session, Jolyn will share practical frameworks and real-world experiences from product management, systems thinking, and data analytics to help leaders and builders navigate an increasingly AI-driven landscape while keeping people at the centre. You'll leave with three powerful questions to reflect on: 🔹 Lead — Am I creating conditions where people can do their best work? 🔹 Build — Am I solving real problems or just shipping solutions? 🔹 Adapt — Am I engaging with change with curiosity or with fear? Whether you're a developer, product professional, team lead, or simply curious about the future of work, this conversation is for you. 📅 Join us for an evening of honest insights, practical takeaways, and meaningful discussions.

Update 6/2: Event is full. Join us for the Lockpicking Introductory Course – a hands-on 3-hour session hosted by Locksport SG where curiosity meets skill. You’ll learn: How a pin tumbler lock actually works How to safely and ethically pick a lock using simple tools Practical techniques with guided, hands-on practice Personalized tips from experienced members of Singapore’s locksport community Bonus: Get introduced to decoding combination locks—an extra skill to level up your knowledge. Whether you’re a complete beginner or curious about physical security, this is your chance to try something unique, fun, and surprisingly satisfying. Sign up here: [https://tinyurl.com/locksportsg](https://tinyurl.com/locksportsg?fbclid=IwZXh0bgNhZW0CMTAAYnJpZBExaFRjSlM4WEhIS1BkQTJCZHNydGMGYXBwX2lkEDIyMjAzOTE3ODgyMDA4OTIAAR4bwq19RpRwgUZm0vt8ZR24KvA_u4RV9TRgIwN-sVM8Vf5PIzhBimYy9NezIQ_aem_EpysqS_rTSI5K_XSUSMBvQ) Included: Lockpicking set, cutaway training lock, cylinder lock will be given to participants to bring home for FREE. Locksport SG is a Singapore-based lockpicking hobby group that promotes the legal and safe way to understanding lockpicking. They have been featured on local media like Straits Times and Channel 8 news. [#Locksport](https://www.facebook.com/hashtag/locksport?__cft__%5B0%5D=AZbXHSKPl6KBpZUh1OrjiMBgXlRb3qcAps9xDdTVQeoJghpwgChFPBg6kfDdHXrD3sbT_27gTrv69e418h_Ia5EqtREqSLlROD74N55QYMt4oG-cFep-ZBc6KVbPyo02POjmWZC5egTOgBGzoSesca_zhJDv8vkiOmdhBFZSy0Wrs6RaXgy_ZAub9LPuqjaXe_4&__tn__=*NK-R) [#LearnSomethingNew](https://www.facebook.com/hashtag/learnsomethingnew?__cft__%5B0%5D=AZbXHSKPl6KBpZUh1OrjiMBgXlRb3qcAps9xDdTVQeoJghpwgChFPBg6kfDdHXrD3sbT_27gTrv69e418h_Ia5EqtREqSLlROD74N55QYMt4oG-cFep-ZBc6KVbPyo02POjmWZC5egTOgBGzoSesca_zhJDv8vkiOmdhBFZSy0Wrs6RaXgy_ZAub9LPuqjaXe_4&__tn__=*NK-R) [#lockpicking](https://www.facebook.com/hashtag/lockpicking?__cft__%5B0%5D=AZbXHSKPl6KBpZUh1OrjiMBgXlRb3qcAps9xDdTVQeoJghpwgChFPBg6kfDdHXrD3sbT_27gTrv69e418h_Ia5EqtREqSLlROD74N55QYMt4oG-cFep-ZBc6KVbPyo02POjmWZC5egTOgBGzoSesca_zhJDv8vkiOmdhBFZSy0Wrs6RaXgy_ZAub9LPuqjaXe_4&__tn__=*NK-R) [#hacking](https://www.facebook.com/hashtag/hacking?__cft__%5B0%5D=AZbXHSKPl6KBpZUh1OrjiMBgXlRb3qcAps9xDdTVQeoJghpwgChFPBg6kfDdHXrD3sbT_27gTrv69e418h_Ia5EqtREqSLlROD74N55QYMt4oG-cFep-ZBc6KVbPyo02POjmWZC5egTOgBGzoSesca_zhJDv8vkiOmdhBFZSy0Wrs6RaXgy_ZAub9LPuqjaXe_4&__tn__=*NK-R) #[#sɪɴɢᴀᴘᴏʀᴇᴇᴠᴇɴᴛs](https://www.facebook.com/hashtag/s%C9%AA%C9%B4%C9%A2%E1%B4%80%E1%B4%98%E1%B4%8F%CA%80%E1%B4%87%E1%B4%87%E1%B4%A0%E1%B4%87%C9%B4%E1%B4%9Bs?__cft__%5B0%5D=AZbXHSKPl6KBpZUh1OrjiMBgXlRb3qcAps9xDdTVQeoJghpwgChFPBg6kfDdHXrD3sbT_27gTrv69e418h_Ia5EqtREqSLlROD74N55QYMt4oG-cFep-ZBc6KVbPyo02POjmWZC5egTOgBGzoSesca_zhJDv8vkiOmdhBFZSy0Wrs6RaXgy_ZAub9LPuqjaXe_4&__tn__=*NK-R)

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *July Meeting - Lightning Talks!* Lightning talks are very short presentations on a topic of your choice (must be related to .NET). Talks should be 15-20 minutes in length and include minimal slides and quick demo (no live coding please). There will be 6 slots available! First come, first serve! **YouTube Link** TBD

**Hello Columbus!** **The community is buzzing and growing well. We are thrilled to bring our fourth BrowserStack QA Meetup on Thursday, July 9th!** We are creating a space for deeper insights, meaningful connections, and a vibe you won't want to miss. **What to expect:** * **Connect:** Network with Columbus' top engineering and QA minds. * **Learn:** Real-world tactics and trends you can use immediately. * **Enjoy:** Food, drinks, and great community spirit. **Agenda** * **Two Roads Diverged in a Wood: Docker Compose vs. Kubernetes** by **[Doug Reeder](https://www.linkedin.com/in/pdouglasreeder/)** **RSVP Essential:** Space is limited, and we want to ensure a great experience for everyone. **RSVP now to secure your spot!** 📍 **Venue:** Leading EDJE, 6515 Longshore Loop, Suite 300, Dublin, OH 43017 📍 **Free Parking:** 6725 Longshore Street, Dublin, OH 43017 📅 **Date & Time:** July 9, 6:00 PM **Stay Connected!** Want to continue the conversation beyond the meetup? Join our **BrowserStack Discord Server** to get updates, connect with fellow QA professionals, and be part of an ongoing discussion. **Don’t miss out—click below to join!** 🔗 [\[](https://discord.gg/6SdCyWTNyW)**[Join the BrowserStack Discord Server](https://discord.gg/6SdCyWTNyW)**[\]](https://discord.gg/6SdCyWTNyW) **A Few Notes:** ✅ This is an **in-person event** ✅ **RSVP does not guarantee a seat** – A confirmation email will be sent one day before the event. **TALK ABSTRACT:** Docker Compose and Kubernetes are two of the most popular tools for running containerized applications. Their feature lists are similar. Architects and senior developers need to know how their different paradigms lead to unexpectedly different experiences in production.

Over a billion documents processed. Millions of Veterans impacted. Hundreds of thousands of employee hours saved. Faster decisions. Greater accuracy. More benefits in the hands of our disabled Veterans. We created Smart Search, the world’s largest consumer of Amazon Textract, right when GenAI began reshaping what’s possible. Since then, we’ve built a suite of AI‑driven solutions that transform this data into real, measurable outcomes—accelerating benefits decisions for our Nation’s Veterans. Join us for a focused conversation on how an outcome‑driven approach to AI is helping us boost accuracy, streamline workflows, and deliver faster results for those who have served. This is a follow up to the AWS re:Invent 2023 "Intelligent Document Processing with Gen AI for Public Sector" presentation. About Speaker: Cameron Williams is a Senior Technical Project Manager and cross-functional technical leader at Booz Allen Hamilton with 15+ years of experience architecting and evolving scalable, cloud-native systems, from greenfield development to complex enterprise modernization. https://www.linkedin.com/in/cameronw711/ **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

Discover Inner Engineering in Columbus! Saturday June 13th Choose a location & Time: Holiday Inn Express : 4:00 PM - 5:00 PM Rangoli -The Indian Mall: 7:00 PM -8:00 PM [RSVP](https://innerengineering.sadhguru.org/columbus?fbclid=IwdGRzaASVdldjbGNrBJV2TmV4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOAABHmTH5dVmwyksT8x39dKxCZZPJm96hYF7q4m6CmzfjsgJ14o3X4jux71er_mq_aem_W51vRnuLMzlDtxYJWPuqKg&sfnsn=wa)

Discover Inner Engineering in Columbus! Saturday June 13th Choose a location & Time: Holiday Inn Express : 4:00 PM - 5:00 PM Rangoli -The Indian Mall: 7:00 PM -8:00 PM [RSVP](https://innerengineering.sadhguru.org/columbus?fbclid=IwdGRzaASVdldjbGNrBJV2TmV4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOAABHmTH5dVmwyksT8x39dKxCZZPJm96hYF7q4m6CmzfjsgJ14o3X4jux71er_mq_aem_W51vRnuLMzlDtxYJWPuqKg&sfnsn=wa)

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. Please RSVP via [Microsoft Build //localhost:columbus | Microsoft Reactor](https://developer.microsoft.com/en-us/reactor/events/27247/).

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