Hyperledger

**Designed for experienced cybersecurity professionals, this event focuses on senior peer-level exchange. Others are welcome to apply, though priority will be given to those** **with several years in the field.** No career in cybersecurity is without setbacks, and no real expertise is built without learning from them. This event digs into how experienced professionals turn difficult moments and missteps into strength. With experience comes perspective. This event is designed for senior women in cybersecurity to openly reflect on the challenges, mistakes, and turning points that have shaped their careers. Expect honest conversations, shared insight, and meaningful connections among peers. **Please note that we can accommodate dietary restrictions for those who get a spot before 14.04.2026. However, due to some constraints, we may not be able to make special food arrangements for those who get a spot after this date. We appreciate your understanding.** **Note:** We will use meetup.com to communicate with you. Please check that you have allowed notifications and emails from meetup. This event requires some of the details which you can answer during RSVP. Please be mindful to answer the questionnaires. The information will be used purely to tailor relevant discussions during the event. Our experts: **Jenni Gyllenberg**, Expert IT Security Specialist in Nordea, who has held both leadership and specialist positions in the financial industry for the past 25 years. **Benjamin Särkkä** is a cybersecurity leader, hacker, and CEO of 10100 Group, as well as the founder of the Disobey community. With experience ranging from building incident response capabilities to leading cybersecurity in organisations of different sizes, he brings a practical, real-world perspective not only to digital defense but also to how setbacks can be turned into strengths. **Kaarina Satamo** is Head of Identity Management at Nordea. She has a background in global industrial companies with passion in Identity and Access Management and how it can support cybersecurity, compliance and process automation. She values diversity, strategic thinking and focuses on practical and responsible solutions. **Agenda** **17:00** Doors open **17:30** W4CFI introduction **17:40** Presentation by Jenni Gyllenberg: “Imperfect Experts – Turning setbacks into strengths” explains why you should shift from being afraid of making mistakes to embracing them, and why this is the only way forward. **18:15** Food, drinks & networking **18:45** Presentation by Benjamin Särkkä: “Threats and Opportunities of the Modern Operating Environments” **19:00** Small group discussions lead by Jenni Gyllenberg, Benjamin Särkkä, and Kaarina Satamo **20:30-21.00** Wrap-up, networking If the event is full, we still recommend you join the waitlist, since often spots open up closer to the event. **We have a no-show policy** If you are not able to participate and do not cancel, you will not be allowed to participate in upcoming events for the next six months. **If you need to cancel your participation, please update your RSVP status in Meetup to "Not going" by the 18th of April, 2026 latest.** **Photos and social media** Please note that pictures from the event will be shared in our social media channels. You can opt-out from being photographed at the event. **How to enroll?** The venue requires prior registration. To enroll in the event click "Attend" in Meetup. Please note that Women4Cyber Finland's events are primarily for women, but we welcome everyone. As the spots for the event are limited, we prioritize women currently working in the cybersecurity field. If you have any questions, please feel free to contact us at events[at]women4cyberfinland.com **About Nordea** Nordea is the largest bank in the Nordics where we work to support our customers’ financial development. Nordea is a major employer for technology specialists in the Nordics and Poland. Our technology units employ around 8000 people with a diverse background, nationalities and competences. With us, you get to work with all the modern technologies. We are up to date with cybersecurity trends, ensuring quality of banking services, with operational stability on top of mind. Warm welcome!

Detailed topic, place and speakers TBD. Contact organizers if you wanto to speak, host or offer snacks. Possible topics for those eager to speak for example: • Introducing your API & telling your API story • APIOps Cycles methods - experiences & feedback • Automating API Design • API Audit of a specific API • OpenAPI live specification of an API • Organizing hackathon • Marketing and monetizing your API • Open data & APIs

We join forces with Helsinki Python and meet at TEK and Insinööriliitto's premises. **👉 RSVP to the [Helsinki Python event](https://www.meetup.com/helpy-meetups/events/314258115/)! 👈** We are arranging this together with HelPy and need to track attendance in one place, which is that HelPy event. So please follow the link above to get more information and RSVP.

Join us for an empowering workshop hosted by Helsinki Toastmasters, focusing on mastering confidence and communication skills. Whether you are a seasoned public speaker or just starting your journey, this event is tailored for individuals looking to boost their self-empowerment and enhance their leadership skills. Our experienced mentors will share valuable insights on how to speak with conviction, project confidence, and become a compelling communicator. Connect with like-minded individuals, network with professionals, and engage in thought-provoking discussions aimed at personal development and positive thinking. Elevate your public speaking game, gain inspiration, and set yourself on the path to success. Don't miss this opportunity to invest in yourself and unleash your full potential. Helsinki Toastmasters welcomes you to this interactive event that promises to be both educational and fun. The meeting is in English language, meet and greet starts at 17:30, meeting starts at 17:45 pm sharp. Warmly welcome as a guest.

(SWE nedan) This is a language café for anyone who wants to practice their Swedish through discussion in a laid-back environment. Swedish Language Café takes place every Tuesday at Luckan, and the programme is adapted according to the participants’ needs and wishes. Swedish Language Café is organised in collaboration with Kvinnliga Akademiker i Helsingfors. The Swedish Language Café meets at Luckan, Georgsgatan 27 / Yrjönkatu 27 every Tuesday at 17:30-19:00. There is no need to sign up in advance. For more information: integration@luckan.fi SWE Swedish Language Café är ett språkkafé som är öppet för alla som vill öva svenska via diskussioner i en avslappnad miljö. Språkkaféet hålls varje tisdag och programmet anpassas enligt deltagarnas behov och önskemål. Språkkafét ordnas i samarbete med Kvinnliga Akademiker i Helsingfors. Språkkafét hålls på Luckan, Georgsgatan 27 klockan 17:30-19:00. Förhandsanmälan krävs ej. För mera information kontakta integration@luckan.fi

Learning Finnish in Finland can be difficult because Finns tend to switch to English. That is one of the reasons people like our Finnish language café: you get to practice Finnish with Finns :) The events are completely free and there is always a native speaker to facilitate the conversation and to help find the right words. The coffee is good too ☕😋🇦🇹 Tervetuloa! When? ⏰ Usually Tuesday to Friday from 15:00 - 16:00 Where? 📍 In a cozy Viennese coffee house: The Good Coffee Company, Eerikinkatu 33, Helsinki The Good Coffee Company A Taste of Vienna 🇦🇹 Eerikinkatu 33, 00180 Helsinki Please visit our Facebook page for updates and changes: https://www.facebook.com/TheGoodCoffeeCompany/events

Welcome to join our Sahaja Yoga meditation meetings in English! The meetings are free of charge and you can just show up. The group consists of people of different ages and nationalities who have been meditating different periods of time. Newcomers are welcome at any time. We normally sit on chairs or on pillows on the floor, so there is no need to bring a mat and you can wear normal clothes. Meditation means mental silence or thoughtless awareness. You are present here and now, but your mind is not bombarded by thoughts from the past or the future. In this state, you feel peace and joy, which are the essential elements of the present moment. With regular practice of meditation, it is possible to establish this state within us. The group is lead by volunteers who are experienced and can offer guidance to get you started. We give a short introduction to the meditation and after that we do meditation exercises. We also give tips on how to meditate at home. After the meditation class, we have a cup of tea and there is time for questions. Welcome! We hope to see you in our meditation meetings! This video helps you to find the Kamppi Sahaja Yoga center: https://vimeo.com/199566137 More information about Sahaja Yoga meditation: www.discoversahajayoga.org (in English) www.jooga.org (in Finnish) www.sahajayoga.ru (in Russian) www.sahajayoga.es (in Spanish) Guided online meditations to support your meditation practice at home: www.wemeditate.com

Discover the restorative power of nature on a guided forest walk on the island of Seurasaari. Through calm observation and gentle connection with the forest atmosphere, slow down, unwind, and sharpen your senses. **IMPORTANT**: Spots are limited, please make sure to reserve yours! If you are not registered, you will be kindly asked to leave. Step out of everyday busyness and into a more present, embodied experience of nature. Practice selected ForestMind exercises and include optional moments of shared reflection in a safe, supportive space. These gentle exercises invite you to open your senses, cultivate a feeling of calm and refreshment, and practice being fully present in the moment. Some invitations focus on noticing and kindly accepting your own thoughts, emotions, and bodily sensations. The method, developed in Finland by Mrs. Sirpa Arvonen, combines researched nature-based health effects with simple mind-skill practices and is suitable for everyone, regardless of age, fitness level, or previous experience. Leave the forest feeling grounded, refreshed, and more connected to yourself and your surroundings. **Program details:** *WHEN:* Sunday 26th of April, starting at 14.00 and ending around 17.00 *LOCATION:* Seurasaari Island – about 3,5 Km on designated forest trails (easy access, paths available). *MEETING POINT:* I will meet you just before the white bridge in Seurasaari, (you will see the bridge when you get off from the bus). *AGE:* over 18yo ***PLEASE NOTE***: the activity will take place with sun or rain. Participants bring comfortable shoes/clothing, weatherproof clothing, water bottle, and an open mind. No extra equipment required. *COSTS:* free. The participants pay own bus ticket to and from Seurasaari Join our Whatsapp community network to join your favourite group and stay connected with the other members! When you participate in one of our groups or events, just ask the group facilitator to add you to the community! IG: instagram.com/miitti1 Facebook: facebook.com/miitti1 Web: [lapinlahdenlahde.fi/en/projekti/miitti](http://lapinlahdenlahde.fi/en/projekti/miitti/?fbclid=IwZXh0bgNhZW0CMTAAc3J0YwZhcHBfaWQQMjIyMDM5MTc4ODIwMDg5MgABHjdO6QGKx3W-tfkeqWZwP-A2L4CJvi-dtPCJg0r5i0b7aZ26Xg9M70PgQrcF_aem_bilwGCnh6QkHC4t7bmF_8w)/

At this meetup, we will walk through a practical AI maturity framework for digital product creation. **Product Owner Meetup - Helsinki** is a community where Product Owners come together to celebrate their craft, share real-world experiences, and grow as leaders in their industry. ### **🌱 Join us in the April meetup about AI maturity in product creation** AI is already affecting how product teams work, but many teams still struggle with the same questions: * Where are we today? * Where is AI genuinely useful? * And what should we do next? At this meetup, we will walk through a practical AI maturity framework for digital product creation in e-commerce. It helps product teams assess how AI shows up in discovery, prioritisation, decision-making, delivery, and customer experience 👉…and identify the next improvement area. You will get a concrete way to discuss AI maturity with your team, spot the most relevant opportunities, and avoid getting stuck between experimentation and real adoption. Expect a practical session and an honest discussion, not AI buzzwords. #### **Speakers** **🎤 Okko Ojala, Senior Architect, Nitor** Introducing the AI Maturity Playbook and how teams can use it to start the conversation around beneficial use of AI in product development **🎤Joakim Sandström, Senior Architect, Nitor** Sharing lessons from applying the framework with Finnair and what happened when the framework met real product work 📍 *Where:* **Nitor Office, Aleksanterinkatu** 46, 6th floor (next to Mummotunneli) 🕕 *When:* **Wednesday, 22nd of April, from 17:30 to 19:30** 🍪 *Bonus:* **Snacks, drinks, and great company!** Through inspiring talks, hands-on discussions, and opportunities to connect with peers, we aim to value and highlight the role of the Product Owner to one of innovation, pride, and strategic impact. Each session brings together practical insights from industry leaders with first-person, real-life stories from local and global product professionals who have tackled challenges and achieved breakthroughs. Whether you’re fine-tuning stakeholder management, mastering prioritisation, or seeking inspiration, you’ll find a welcoming space to learn, collaborate, and advance your skills. Join us in shaping a movement where Product Owners are recognised as key drivers of outcome orientation, innovation and value, transforming the profession into a globally celebrated craft. 📍Please note: the downstairs exterior doors lock at **17:00**. If you arrive after this, just ring the doorbell and we will let you in. The event begins at **17:30**.

🌍 World Breakfast Stories – A Cultural Morning Experience Start your weekend differently. Join us at Café GTC in Helsinki for a unique breakfast experience where food meets culture. Each weekend we explore a different country through a short guided story, beautiful visuals on the big screen, music, and cultural insights — all while you enjoy a delicious breakfast. 🕗 Saturday & Sunday | 7:00–11:00 🎥 15-minute cultural spotlight presentation 🥐 Full breakfast included 💶 Early Bird: €17.90 | Regular: €19.90 Limited seats (50 spots). Come for breakfast. Stay for the story. Travel the world without leaving Helsinki.

THANK GOD IT'S FRIDAY! Welcome to pay a visit to BTCHEL HUB every Friday from 10am to 6pm, as we launch a new meetup concept: BTCHEL Fridays! BTCHEL Fridays is when the community hub has open doors for anyone to pay a visit, when the active Helsinki bitcoiner scene gathers together under one roof. The BTCHEL Hub is a versatile physical space for workshops, meetups, parties, movie nights, game nights and of course, co-working office where all the members are building together! Join us every friday at your convince! Coffee is on the house ☕️ You'll find us from google maps! Learn more about us from BTCHEL.com

**Meltlake hosts our in-person meetup on the 22nd of April. The location is Meltlake's office at Kansakoulukatu 3.** **Agenda:** \- Game on\! 🎮 Fabric \+ AI 🤖 \+ Power BI 👾 @Meltlake \- Networking unlocked for Microsoft Fabric: Heini Ilmarinen If you want to speak in future sessions and have a topic, please do get in touch with either Vesa Tikkanen, Oskari Heikkinen, Heini Ilmarinen or Aleksi Partanen.

Welcome to HelSec April meetup! This event is powered by **Elisa** and **Terveystalo**. We are excited to invite you to join us for a community evening filled with great talks, engaging discussions, and good company on **Thursday, April 23rd**. We are thrilled to have two fantastic speakers lined up for the event: **Susanna Haavisto** and **Mikael Nilsson**! Registration is done through HelSec ticketing system [here](https://events.helsec.fi/helsec/q7smh-2/). HelSec members have received member-registration link by e-mail. Registration opens on Friday 10.4. at 13:00. If you get a ticket but your plans change, please remember to cancel it so that someone on the waitlist can grab your spot. **Schedule (approximate)** 17:30 - Doors open 18:00 - Word by HelSec 18:10 - Susanna Haavisto - Roll for Security: Can You Actually Reduce Human Risk? 19:00 - Q&A, networking 19:45 - Mikael Nilsson - When AppSec Becomes Ticket Theater — and How to Do Better 20:30 - Q&A, networking 22:00 - Event ends **Speaker bio** **Susanna Haavisto** is a Customer Education Manager at Hoxhunt, where she focuses on managing human risk through behavior change. She is passionate about improving cybersecurity training and communication, and reducing friction so that people can make more secure choices in everyday work and daily life. Outside of work, she is a game master in tabletop RPGs, where dealing with unpredictable human behavior is part of the job. **Mikael Nilsson** Mikael Nilsson is the Product Security Lead for Customer Intelligence R&D at SAS Institute Inc. He spends his time helping engineering teams ship fast without shipping risk, by embedding security and privacy into DevOps and SDLC practices rather than bolting them on afterwards. He is responsible for the security and privacy aspects of SAS Customer Intelligence 360, a global multi-tenant SaaS platform, and regularly works at the intersection of cloud architecture, DevSecOps, vulnerability management, and customer-facing security discussions. Outside of work, Mikael is a serious casual gamer, a groomed-slope carver, a fan of Japanese cars, and is known to sample weird craft beer wherever he may roam.

Zurihac shirts, or other Haskell events paraphernalia mark the spot! :D You're invited to Haskell Office Hours, a laid-back meetup where you can ask questions, get help setting up the Haskell toolchain, or just hang out with fellow Haskellers. This meetup is geared for newcomers, but experts are also welcome to show up and join in the knowledge-sharing. This meetup will occur every second week and RSVP is preferred. Meetup starts at 19:00 and runs until 20:00. For more coordination, join our [Newcomers Matrix room!](https://matrix.to/#/!wnXpJkwWACgSBBzwDh:matrix.org?via=chreekat.net&via=matrix.org&via=rauhala.info) Happy Haskelling!

Important: Register on [AICamp website](https://www.aicamp.ai/event/eventdetails/W2026043014) is required for admission. **Description:** Join us for a community-led developer event focused on AI-assisted coding with GitHub Copilot. This event brings together developers to explore practical workflows, real-world use cases, and hands-on experiences using GitHub Copilot. Whether you are new to GitHub Copilot or already using it, this event will help you better understand how to apply AI-assisted coding techniques in everyday development. **Speakers/Topics:** \- Reynald Adolphe\, Microsoft\. Stay tuned as we are updating speakers and schedules. If you have a keen interest in speaking to our community, we invite you to submit topics for consideration: [Submit Topics](https://forms.gle/JkMt91CZRtoJBSFUA) **Sponsors:** We are actively seeking sponsors to support AI developers community. Whether it is by offering venue spaces, providing food, or cash sponsorship. Sponsors will not only speak at the meetups, receive prominent recognition, but also gain exposure to our extensive membership base of 5,000+ AI developers in D.C and 500K+ worldwide.

This is our weekly training session. NOVA Jujutsu is a self-defense focused system incorporating Geri (Kicking), Atemi (Striking), Uke (Blocking), Tai Sabakai (Body Movement), Tai Hodoki (Escapes), Kansetsu Waza (Joint Locks), Nage Waza (Throwing), Shime Waza (Choking), Katame Waza (Grappling), Tantojutsu (Knife), Bojutsu (Bo), Kenjutsu (Sword), and Kata (Forms). Come on down to a class and see for yourself what this group has to offer. You will get a great workout! You will have an awesome learning experience! You will meet some good people! We look forward to meeting you. See you there. TAGS: japanese, martial arts, self-defense, jujutsu, jujitsu, juijitsu, bujutsu, defense, karate, koppo, kenjutsu, bojutsu, tantojutsu

**You may have heard other investors, gurus and financial planners discussing the virtues of owning rental properties.** And it is definitely true that a portfolio of GOOD rental properties can provide lifetime income and financial security. But what really makes a GOOD rental property? What should you expect from your rental portfolio and how do you manage it for maximum return on minimal effort? We will also deep dive into the BRRRR strategy and show you how it can help you build massive wealth. BRRRR stands for: * Buy * Rehab * Rent * Refinance * Repeat We'll cover those points and more with real examples and data at this month's meeting. Come for training, stay for the networking! ━━━━━━━━━━━━━━━━━ **Did you miss it?** [Watch all GRID Reston event playback on YouTube](https://www.youtube.com/playlist?list=PLOTh5kxLLJI1G3VH6Pqhlhu0uTA8yrdpi) ━━━━━━━━━━━━━━━━━ **Join the GRID Facebook Community** [Join the online GRID community here](https://www.facebook.com/groups/gridinvestor) to post deals, ask questions, and connect with other investors across the globe.

Spec-driven development flips the traditional workflow on its head: instead of code being the source of truth, the specification becomes the backbone of design, collaboration, and delivery. In this session, we’ll explore how GitHub Spec-Kit enables teams to treat specifications as first-class artifacts—living documents that drive architecture, implementation, and verification. You’ll learn how Spec-Kit helps teams clearly express intent using structured, version-controlled specs that live alongside code. We’ll walk through a practical workflow that starts with defining system behavior and constraints, then progressively refines those specs into testable, automatable outcomes. Along the way, we’ll show how specs can reduce ambiguity, improve cross-functional collaboration, and make design decisions explicit before a single line of production code is written. This talk will cover: --What spec-driven development is (and what it isn’t) --How GitHub Spec-Kit fits into modern developer workflows --Using specs to align product, engineering, and AI-assisted development --Real-world examples of turning specs into implementations with confidence Whether you’re building greenfield systems, integrating AI into your stack, or trying to reduce costly rework, spec-driven development offers a scalable way to move faster without sacrificing clarity. Attendees will leave with concrete patterns and a clear mental model for adopting GitHub Spec-Kit in their own projects.

Start with a Pisco Sour, a signature cocktail or mocktail. Enjoy ceviche just like you get in Peru, a choripan sandwich, some Lomo Saltado, Peruvian Chicken or many more delicious choices! [Check out their menu here](https://autenticoperu.com/menu/) Auténtico is born from years of dreams, sharing the rich diversity of Peruvian cuisine with Northern Virginia. Their menu celebrates variety and creativity, where traditional recipes meet subtle touches of innovation. It’s more than food, it’s a fusion of authentic flavors crafted with care, turning every plate into a story worth savoring.

Let’s reboot the DC Postgres Meetup series! This inaugural meeting will be hosted by John Porvaznik and Eddie Pickle and all are welcome. We’re actively looking for speakers, co-hosts, event spaces and other folks that want to help bring this group back to life. If you can’t make it but want to be involved in the future, please let us know. John Porvaznik will present a talk on Postgres fundamentals including shared buffers, memory usage, pages, and more. John is a long time PostgreSQL Engineer and DBA in the government space with focus on ETL / Data Ingestion, PostGIS and spatial data sets, query optimizations, Database Design // DDL, benchmarking and specifications, data health, and system healths and monitoring. This meetup will be hosted near the Snowflake office in Tysons (event space sponsored by Snowflake). We’ll have pizza and drinks for folks. 6:00 arrival and networking, 6:30 talk followed by discussion, 7:45 close. The event is at 1750 Tysons Boulevard, McClean, VA, 22102, in the 1750 Tysons Conference Center. This is Metro Accessible from the Silver Line to Tyson's Corner station. Parking at the mall next door is free or the event building has paid parking.