DIYbio

Observability is supposed to help us understand our systems but for many teams it has quietly become one of the most expensive and least flexible parts of the stack. Plenty of organizations take polished SaaS platforms like Datadog to get real value quickly early on, only to hit the same wall later: runaway costs, pricing tied to architectural decisions, and vendor lock-in so strong it makes Rogers and Bell both blush. In this talk, I’ll walk through a real-world case study of a JVM-based production system that migrated away from a Datadog-centric observability setup to an open-source, OpenTelemetry-based platform. We’ll dig into the why behind the move, the architectural decisions that mattered, the mistakes along the way, and how the team ended up with pragmatic visibility into latency, errors, and resource usage at a fraction of the cost. The second half of the talk is practical and forward-looking. I’ll show how OpenTelemetry unlocks real choice by acting as a neutral data plane for your telemetry. From there, we’ll look at modern, off-the-shelf observability backends you can plug in within minutes without rewriting applications or installing new agents. Want to dual-write, swap vendors, or route data somewhere new? This is how you do it without a big-bang rewrite or another long-term commitment with a new vendor. This session is for engineers and CEOs who are feeling the observability cost squeeze, want leverage back from vendors, and are looking for realistic ways to modernize monitoring without lighting their entire stack on fire each time they decide to change their tools of choice. **About the venue** Free Times Cafe has bistro-style seating and a full food and drink menu. Please consider helping to support the venue by planning to have supper during the talk. **Speaker Bio** Alexei Zenin is a Platform Engineering Consultant based out of Toronto, Canada. Over the course of his career he has worked across the Healthcare, Marketing, Video Games, and Banking industries. He loves to tackle hard problems in the distributed systems space with a focus on scaling platforms both from a technical and process perspective. He is a strong advocate for highly maintainable and well tested code while at the same time pragmatically delivering value to the end user. He has contributed to the broader tech community, namely to Confluent’s blogs on Apache Kafka, spoken at Current 2022 in Austin, Texas, and spoken at XP Game Summit 2025 in Toronto, Canada. During his 5 years at Uken Games he contributed to several games like Who Wants to Be a Millionaire and Jeopardy. One title of note he saw from inception to completion was a game for Tim Hortons built right into the official app, Tim’s Word Challenge. Millions of Canadians have played it along with their morning coffee. He also got to work with Netflix on several unannounced games during his time at the studio. Currently, Alexei is working with various clients, both large and small to modernize and streamline their platforms with the most appropriate tools and practices. Outside of his professional life, he gives back to his community by volunteering at UofT. He also enjoys paddleboarding and attending live rock concerts to reset after long coding sessions.

Join us on March 26th for an exciting **AWS User Group Toronto meetup** focused on **AI-driven development with Kiro**! The evening kicks off with a presentation and live demoes showcasing how Kiro transforms the development workflow, followed by AWS experts sharing the best practices and approaches to get most out of AI-driven development. We'll wrap up with a hands-on workshop and Q&A session — Kiro credits will be provided for participants who want to explore at their own pace. As a bonus, enjoy pizza on us and take home some exclusive Kiro-themed swag! To make the most of the workshop, please come with Kiro pre-installed on your own computer and/or AWS account ready to go. **Agenda:** 6:00-6:15: Welcome Introductions, and community update 6:15-7:00: AI-driven development with Kiro - Presentation and Demo 7:00-7:30: Lessons from field - Best practices and accelerators 7:30-8:00: Workshop set and Q&A **Details:** Address: **18 York St., 7th Floor, Toronto, ON, M5J 2T8** Date: **March 26, 2026** Time: **6:00 pm to 8:00 pm EST** **Speaker:** * **Simran Singh** \- Sr\. Solutions Architect @ AWS * **Divya Jadav** \- Solutions Architect @ AWS * **Abhijith Ramesh Chandra** \- Solutions Architect @ AWS Please plan to arrive between 05:30 PM and 06:00 PM to ensure time to check-in, before the event begins at 06:00 PM. Visitors will need to present a government-issued photo ID to verify their identity and will have their picture taken to receive a visitor badge. Please wear your badge and remember to return all visitor badges to reception at the end of the visit. Parking is available onsite. There is a parking garage located beneath the building. You can pull an access ticket at the garage entrance off 120 Bremner Boulevard or Lower Simcoe Street. If you are arriving via the Union station, the building is conveniently located next to the Union station. Please enter through the main entrance on Bremner Boulevard or via the PATH Network and proceed to the elevators.

**Taming the Lobster: Securing OpenClaw and Navigating the Future of Autonomous AI Agents** OpenClaw is everywhere right now. It’s arguably one of the most powerful tools for automating tasks locally, but let’s be honest: giving an AI autonomous access to your system is a massive security gamble. Between private data leaks and untrusted content, you’re basically looking at a "lethal trifecta" of risks if you aren't careful. In this talk, I’m going to skip the fluff and look at real exploits we’ve seen in the wild—from malware hiding in plugin marketplaces to remote code execution flaws that can hijack your gateway. We’ll then walk through a practical hardening checklist to lock down your setup (think container sandboxing and network isolation) so you can actually sleep at night. To wrap things up, I’ll share a few safer alternatives for those who want the power of an AI agent without the operational headache. **Speaker: Samiul Islam** **Senior AI Product Manager & Agentic Systems Specialist** Samiul is a Senior AI Product Manager based in Mississauga, recognized for architecting GenAI roadmaps and building the underlying orchestration layers that make AI agents reliable. Currently consulting for Thinkrr.ai, he leads the development AI roadmap including their AI copilot, and having voice AI build voice agents. With a foundation in Electrical Engineering from the University of British Columbia, Samiul specializes in bridging the gap between raw LLM capabilities and deterministic enterprise outputs. During his tenure at Formula.Monks, he led R&D teams to launch agentic frameworks that utilized a semantic tooling layer to ensure AI behavior remained precise and human-like. A practitioner as much as a strategist, Samiul is an active contributor to the local AI community, frequently optimizing LLMs on Apple Silicon and developing self-hosted MCP solutions. Outside of the professional sphere, he is a dedicated DIYer and health-tech enthusiast, applying his technical mindset to navigate complex personal health data. **Schedule:** 6:00 - 6:30 - Meet 'n Greet 6:30 - 6:45 - Introduction and Welcome 6:45 - 7:45 - Main Presentation 7:45 - 8:00 - Closing and Prize Draw 8:00 - ? - (Optional - whoever would like to join) Continue our conversations at Bar 6ix, 201 City Centre Drive (3 minute walk) **Where to Find Us** Conference Room 073 in the Hazel McCallion Central Library. Bottom Level. **Parking** There is a parking garage under the library. Parking is free from 6PM on.

Python Toronto is back! Join us for our March meetup at the Nokia office at **100 Queens Quay E, Floor 14** on **Thursday, March 26, 2026 at 5:30pm!** If you are interested in giving a talk, we'd love to have you! Please fill out this form – [Submit a Python Toronto talk](https://docs.google.com/forms/d/e/1FAIpQLSfpNKB0Sbs893xp72M4TxmYGrTyLm4Nh1SSXnCqChP9mx6_9A/viewform?usp=header)! Talks are typically short, typically 5 to 10 minutes, and up to 20 minutes if you've really got something to say, and on any topic that would be interesting to a room of Python people. This can be a Python library that has helped you, a research paper you've enjoyed, or an interesting application of AI. The Python meetup is a casual, community-oriented meetup hosted by companies that use Python in Toronto. Talks are short, informal, and sometimes ad-hoc. Space is limited! Register now to hold your spot. **When / Where** * When: March 26, 2026, 5:30pm to 9:00pm. * Where: Nokia Office - 100 Queens Quay E, Floor 14 Toronto, ON M5E 0C7 Come early to enjoy **snacks** and **drinks** provided. **Code of Conduct** Python Toronto is dedicated to providing a welcoming, harassment-free experience for everyone, regardless of gender, gender identity and expression, age, sexual orientation, disability, physical appearance, body size, race, ethnicity, religion (or lack thereof), or technology choices. We do not tolerate harassment of any form. Sexual language and imagery is not appropriate for this venue, including talks, workshops, parties, Twitter and other online media. Meetup participants violating these rules may be sanctioned or expelled from the meetup (without a refund where applicable) at the discretion of the meetup organizers. Please email elaine@eswong.ca to report any issues.

Contact Alex for location and information.

## 🧠🎉 Trivia Night @ The Frog: A Firkin Pub 🍻 **Think fast, laugh hard, and make new friends!** We’ll be meeting at **The Frog: A Firkin Pub**, conveniently located just steps from **Yonge–Sheppard Station** — cozy - great food and fun! ### 🕖 About the Event Trivia starts at **7:00 PM** and runs until around **9:30 P**M— just **ask for Colleen’s group** when you arrive! Expect a lively mix of **pop culture, history, music, sports, and random fun question.** Whether you come solo or bring a friend, we’ll make sure everyone’s part of a team. 🧩💬 ### 💸 Cost & Policy Everyone must spend at least **$10 (plus tax & tip)** at the pub. **NEW POLICY:** * 🆕 *First-timers* must send a **$5 deposit** by e-transfer to **tommills@rogers.com** and message Colleen right away on this page or the sign-up page. you'll be refunded in cashif/when you show up. * 💌 There will be a **$1 reminder charge** if you don’t send the deposit promptly, for each reminder. * 👥 You may bring **1 guest**, but please e-transfer **$10** in advance. You’ll be refunded once your guest arrives. ### 🧠 Why You’ll Love It Trivia night isn’t just about questions — it’s about **connection, laughter, and teamwork**. Come test your wits, cheer on your tablemates, and enjoy the buzz of a pub full of friendly faces. Whether you’re a trivia pro or just in it for the fun, it’s always a great time! 📱 **Don’t forget to join our WhatsApp group** – [CLICK HERE!](https://chat.whatsapp.com/H59mSCbsAi018gYANrKAnc?mode=ac_t) ### ⚠️ Notes * Please don’t just “show up” without RSVPing — seating is limited, and teams need to be balanced. * Occasionally, the organizer may need to rearrange teams if one is *too stacked* (e.g., all the sports or music experts together!). * Sometimes things happen — events can be canceled or adjusted, so keep an eye out for updates. 📩 **Questions?** Contact **Colleen**, your organizer, by posting on the event page.

This is a ticketed event. Please register at [this link](https://luma.com/e69uao09). ​In his talk, Samuel Simko from ETH Zurich will present his recent work on adversarial defenses for LLMs, developed with the Jinesis Lab (University of Toronto). The talk will cover a series of approaches, ranging from triplet-based contrastive learning defenses to honeypot-style defenses designed to avoid worst-case behavior. He will also discuss patterns observed in contest-winning manual jailbreaking prompts, ideas for tamper-resistant safeguards, and the current limits of attacks, defenses, and evaluation methodologies. ​**Event Schedule** 6:00 to 6:30 - Food and introductions 6:30 to 7:30 - Presentation and Q&A 7:30 to 9:00 - Open Discussions ​​​If you can't attend in person, join our live stream starting at 6:30 pm via [this link](https://www.youtube.com/@Trajectory-Labs/live).

Let’s do some coding together at a cafe! No more working alone in the weekend. Here, we write code together. And I mean together together. Not occupying-the-same-space-but-separate together. Here’s how it works: Jennifer brings her mobile app project, tells everyone that it is like Pinterest for recipes and she’d like to work on the nav bar. Paul and Chloe think Jennifer's project is fascinating, and they join the group. They gather around Jennifer’s laptop and work on the nav bar for 2 hours. Jennifer is the one typing out the code while Paul and Chloe research, brainstorm, and offer suggestions. If you’re feeling stuck on your own project or need a motivation boost, bring it to mob programming! Want to learn by watching how others code and solve problems? Join someone else’s project at this event! Oh and we love your half-done projects that you are a bit embarrassed to share. Absolutely bring those to the event! **Discord**: We use Discord to share screen & code snippets during the event. Also feel free to share your projects here before the event! https://discord.gg/yvAGbh4PpD **Event policy**: * We have 0 tolerance for harassment. * We don’t allow the projects that are not meant to be shared in public such as school assignments, interview tasks, or trade secrets. * The goal is to write code. We discourage you from pitching business ideas here, doing code reviews, or spending the whole event on planning what to do. * Please buy a drink, and tip the barista well.

It's time we came out of hibernation to play in the MUD!!! What do you say, beagle people?!!! We can do it!!! Grab a Towel...or 2 or 3 and Meet us at the Park!!! WE MISS YOU!!!

It's better when we're together. Come and experience the power of the WHM with a wonderful group of people. We breathe, we go into the cold and we teach our bodies to heat up properly. We develop resilience and the mindset to use these powerful healing tools over and over again, all year round. This gathering is fully guided by Wim Hof instructor Steve Beattie. If you are new to this, come on down, enjoy the support and practice in a safe way with us. If you already have a WHM practice this meetup is a great way to take it to the next level, and make lots of new friends. There will be a fire, snacks and drinks shared by other attendees. We have been doing this 6 for years! **What to bring?** * Yoga mat * Weather-appropriate clothing (better to dress too warm!) * Bathing suite, towel * Water shoes (optional) In extreme weather being prepared is very important. Especially if it's your first time, please read up on how to come prepared [here.](https://www.breathinginnature.com/wim-hof-method-meetup/) Learn more about our Wim Hof meetups, workshops, breath classes, wilderness trips, medicine work and special events at **[Breathing in Nature](https://breathinginnature.com/)**. Join the "**[Wim Hof Toronto](https://www.facebook.com/groups/1714218015474146/)**" group on Facebook to see all of our local events. This is a free event made possible by our Gift Economy. You can learn more about the Gift Economy [here](https://breathinginnature.com/gift-economy/).

**Please note the only way to register for this adventure is on [our website.](https://www.wildernessunion.com/adventures/intro-shelter)** ***Learn the timeless skill of building functional, practical and well-insulated shelters from camping gear and natural materials found in the wild!*** For all of human history, shelter has been essential for protection, warmth, and survival. Learning how to read the land, choose the right materials, and construct an effective shelter in a way that does not negatively impact the local ecosystem requires knowledge, creativity, and hands-on practice. In this course we will teach you skills for creating shelters and insulations in wilderness situations. We will discuss shelter and insulation principles, basics of thermoregulation, basic improvised cordage concepts for construction, and how to determine what kind of structures are necessary for various scenarios. We will be practicing these skills in ways that promote sustainability, ethical conservation principles, and respect for our natural landscapes. After two sold-out Firecraft courses, we are so excited to be back with the next incredible course in our Survivalist Series. You’ll begin to master the craft of shelter building with expert, hands-on guidance from our seasoned survival instructor and wilderness guide, Kyle. You'll be taught and encouraged to practice: 1\. Identifying and selecting safe and effective shelter locations 2\. Building debris shelters\, improvised portable bedrolls\, and tarp\-based structures 3\. Insulation\, weatherproofing\, and heat retention techniques This course will give you the foundation to build reliable shelters in a variety of environments and conditions. **Who it’s for:** This course is for beginners and intermediate survivalists alike. Bring your curiosity, a willingness to learn, and a love of getting outside. This is an amazing opportunity not only to learn from our expert, but it's a fun, practical lesson at a uniquely low price. **About this series:** The Survivalist Series is an expert-led set of courses designed to develop applicable, and life-saving skills in the wilderness. Keep your eyes peeled for more courses coming soon! **Highlights** **Survivalist Skills Training:** Develop essential skills to survive and thrive in the wild. **Expert Instructors:** Our amazing expert guides will teach you everything you need to know in a safe and fun way **Sustainable Skills-Building:** Shelters will be built without falling live trees or negatively impacting the natural environment **Event cost: $80+HST - optional transport available.** **Register [here.](https://www.wildernessunion.com/adventures/intro-shelter)** **About Wilderness Union** Wilderness Union is deliberate about building an outdoors community that connects you to the life-changing magic of the outdoors and helps you find your people. Members range from 20-40 years old. The group is a mix of GTA locals and newcomers to Toronto from within Canada and abroad. Attendance numbers on Meetup don't reflect our actual event attendance - we typically have 15-20 community members at each event. Large enough that there's someone new to meet but small enough that it's not overwhelming! ***Learn more at our website [www.wildernessunion.com](https://www.wildernessunion.com/)***

[Summary] This meetup is for those who are interested in code, web development, design, cloud, or AI. All levels are welcome, so feel free to bring your laptop and discuss what you are working on or what you are learning. You can share your projects and ideas with other participants freely. There are outlets and WiFi, drinks are about $5 for tea, they take card only. [Price] Attendance is FREE. But you need to buy something from the venue. [Policies] \- We do not tolerate harassment of our members \- We remind users that that this meetup is intended for networking and hobby development\, and any attempts at using this meetup event as a dating platform will not be not be tolerated Further information: https://torontostack.exchange/

**Spring Social Edition** As the days grow longer and the city begins to bloom, join us for a fresh and vibrant spring gathering to reconnect, recharge, and welcome the new season together. Think light, lively, and full of possibility — the perfect moment to enjoy good food, good energy, and great company. This month’s theme invites you to _embrace spring renewal_: florals, pastels, breezy layers — or simply come as you are. Let’s shake off the winter chill and step into the season with laughter, conversation, and delicious plant-based food. ### **About Toronto Vegan Drinks** Vegan Drinks is a social event for those interested in making new friends and meeting like-minded people. We meet up on the last Friday of the month. You don't have to be a vegan to come and enjoy the fun (in fact we encourage you to bring your veg and non-veg friends!), but only vegan food and drinks are available for purchase. This event is an inclusive and welcoming space for all! ### **This Month’s Venue** We’ll be celebrating the arrival of spring at the vibrant **Thien Tam** in the Junction! ❄️ Enjoy their flavourful Pan-Asian vegan dishes, cozy atmosphere, and a refreshing menu of cocktails and mocktails. From scrumptious grub to refreshing drinks, there's something for everyone to enjoy. Menu: [https://thientamca.com/](https://thientamca.com/) ### **Event Details** **📅 Friday, March 27** **⏰ 6:30 pm – 9:30 pm** **📍 Thien Tam – The Junction** There is no cover charge but we encourage everyone to support our host by buying some food and/or drinks! ### **How does it work?** Just show up, have fun, and meet new people! Name tags will be available so you won't have to remember a million names! Talk about your interests, your favourite recipes and restaurants, your dream job to save the animals, the environment, your ethics, or anything and everything! Let’s welcome spring with fresh energy, new connections, and a wonderful night out together. 🌸✨

This group is for badminton enthusiasts who are passionate about exploring the connections between metabolism, energy, and exercise. We are welcome beginner plus, intermediate and advance level players looking to improve your skill or a seasoned player seeking to optimize your performance on the court, this group is for you! Join us for friendly games. This badminton session is a weekly event and it is followed with dinner together but it is optional. Since we have 3 courts and allowed the maximum of 24 players so that everyone signs up for this event will be placed on waiting list FIRST then will be moved to the joining list on WEDNESDAY MORNING. Court fee: It will be informed at the comment section by 4pm. Cost per person is either $162 (for 3 courts) divided by the number of players attended OR $108 (for 2 courts) divided by the number of players attended. My email address will be provided at that time for etransfer.

This meeting will be a discussion of the book "the Science of Aliens" by Mark Brake

**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: Type Annotations with John Cassidy 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

Columbus Code & Coffee is excited to partner with GiveBackHack to put on the Healthtech Impact Sprint from 3/28-3/29 at Rev1 at The Peninsula! RSVP here using promo code CODEANDCOFFEE: https://luma.com/tk2jdrxk This is a health-specific version of GBH’s traditional weekend event. Participants pitch, research, and prototype health-focused projects for a chance to earn to $5K in funding from The Columbus Foundation and IGS Energy. On Saturday, folks will pitch their idea, form teams, and build. On Sunday, they’ll finalize their pitches before showcasing their work to the community and judges. # ​Schedule ​**Sat, Mar 28** * ​​9a: Doors open & breakfast * ​9:30a: Kickoff and intros * ​​10a: Ideation session * ​​11a: Pitches & team formation * ​​12p: Working lunch * ​​2p: Mentor visits * ​​5p: Free work (optional) * ​​9p: Doors close ​​**Sun, Mar 29** * ​9a: Doors open * ​10a: Mentor visits * ​​12p: Showcase * ​​1p: Final pitches & awards * ​​2p: Wrap *** # ​ FAQs ​**Do all ideas have a chance at getting funded?** ​​Not all ideas will move forward after initial pitches on Saturday. Once pitches are complete, we’ll vote for top ideas and form teams around the 4 – 7 ideas with the most votes. You must recruit **at least four total team members** (including the founder) to move forward and have a chance at getting funded on Sunday. If your idea doesn’t move forward, you can join another team! ​​**Do I have to submit my idea online prior to the event?** ​​Unlike previous years, we don’t have the option to submit your idea online prior to the event. Instead, everyone will be going through a brainstorming exercise on Saturday that’ll help you prepare for your initial pitch. ​​**Will we be working for 24 hours straight?** ​​Nope. The event is split over two days. You’ll be building on Saturday and pitching on Sunday. ​​**Do I have to pitch an idea?** ​​Nope. You can also simply join a team. ​​**What types of entrepreneurs does GBH support?** ​​While GBH most often works with technology startups, we support *any* organization (for- or non-profit) that makes an impact on health in the US or across the world.

Private Group. Closed to the Public Knowing ourselves and understanding our abilities is the first step toward wielding our gifts with control and accuracy. In subsequent classes we will verify and hone our talents with activities and discussion. These are hands-on workshops and participation is expected. The goal of our series will be to develop expertise in areas of particular interest such as mediumship, channeling, divination, healing and, etc.. Our ultimate directions will be determined by class members as we evolve. I look forward to sharing and discovering with you. - Cynthia

Join us for the Spring edition of [Nature Loving Fest](https://www.facebook.com/events/895148649812928), a small, thoughtfully curated outdoor gathering celebrating vegan eats, handmade goods, and the beauty of the season. Formerly known as our Vegan Pop-Up, this new chapter reflects what the event has always been — a space rooted in nature, community, and intentional living. Expect around 20 local vendors offering seasonal vegan eats, small-batch bakes, handcrafted goods, and earth-conscious products. Come support local makers, share good food, and celebrate the beginning of a new season with us. Admission is Free.

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected. This month we have **WiFi HaLow: Introduction and Practical Use** with **Alex Barbur**. Details are are [core.radio](https://core.radio).