Android App Architecture

We'll come together to talk about writing custom apps. Macoy Madson will show how he applied Handmade principles to creating a custom CAD application for a manufacturing company. He will go over the various features and his criteria for what he picked to build vs buy, as well as lessons learned from the shortcomings of his choices. If we have time, we'll also look at compiling native code to WebAssembly. **Agenda:** \- 2pm \- 3pm: Custom app presentation and WebAssembly \- 3pm \- 4pm: Open\-ended discussions\, presentations\, etc\. \- 4pm \- whenever: We'll go get food nearby\! **What we do** Presentations on lower-level, foundational programming topics, ethical software, knowledge sharing, mentoring, and discussion. **Who we are:** We are all about handmade software. Rather than focus on frameworks, heavy abstractions, and buzzwords - we typically create projects or research topics that build an understanding of foundational computing concepts, essential data structures, and hardware/software interaction. **What to bring?** Bring a laptop, project, or just a curious mind. If you're not sure you're ready to contribute, don't worry: we're all here to share our passions and hone our craft. **If you arrive late:** Please enter the room quietly as to not disrupt anyone that is presenting. You can take any empty seat.

This used to be my go-to cafe because it’s not far from home. They’ve got plenty of food options, espresso and coffee from local roasters Caffe Amouri, and dedicated parking. I’ll try to grab a comfy couch for us to enjoy the morning. (No discussions on politics, religion or potentially controversial topics. We're here to relax and have fun. Just be respectful and we'll be alright. Pay your own way, and enjoy!)

It’s finally gorgeous weather for hiking! Let’s visit Billy Goat Trail! We’re going to rock scramble on Section A. This section is 1.75 miles and considered by National Park Service as technical and strenuous, with rugged terrain of the trail involving a 50ft steep cliff face ascension. Meeting Point: free parking lot near the trail, but NOTE this parking lot fills up very quickly very early https://maps.app.goo.gl/FisVVrYkULSRjzNf6?g_st=ic Pets: not allowed by NPS on this section Duration: 2-3 hours Attire: hiking shoes HIGHLY recommended \-\-\-\-\-\-\-\-\- If you have Instagram, you can check out our account at asiandiningandadventuregroup for photos and announcements of group outings!

10:00 AM - Meet & Create UPDATE: We’ll start at the studio with networking and then go on a FIELD TRIP to Ace photo for their Customer Appreciation Day (https://maps.app.goo.gl/Y2jVscqSNsAhLL8E8?g_st=i&utm_campaign=ac-im) 12noon - Lunch + Networking After the field trip, we’ll head to a local restaurant for lunch and continued networking and conversation.

Please join us for an early dinner/hang-out at Sunflower in Vienna, VA! [https://www.crystalsunflower.com/](https://www.crystalsunflower.com/) \*Please note -- there are multiple restaurants with this name. **This event will be in VIENNA, VA,** at 2531 Chain Bridge Road Vienna, VA 22181. \*Feel free to just have something from their "small bites" menu or a non-alcoholic beverage if you're not hungry enough for a full dinner at that time. (LOL, I'll be having a full dinner myself.) \*Sunflower is a **100% vegetarian restaurant with a great selection of VEGAN dishes** that "look and taste like real meat, poultry, and seafood. The menu features Japanese, Chinese, and Continental style dishes." \*\*\*Please note: Fairfax County charges a **4% Food and Beverage Tax** in addition to the 6% sales tax. This restaurant also charges a **3% large-party billing fee** to prepare the checks. And of course the gratuity will be 18-20%. \*I’ll bring nametags. The restaurant said that they could create separate checks for each single or couple.

Come join us atthe Pickle & International Food Festival in Sterling, VA. There will be pickle inspired foods, international cuisine, craft beer, and live music. THIS IS NOT A TICKET: Tickets can be found on the link below and general admission is $5 + credit card fee Buy ticket here: https://www.crookedrunfermentation.com/pickle-international-food-festival-2026

This is the sign you've been waiting for. Come write with us Sunday at 7:30 am at Kaldi's Social House in Arlington. Kaldi's opens at 7. Grab a coffee and join the group! We generally have 10 to 14 writers attend each week, and new folks are welcome to drop in anytime. Intros start at 7:30 am. We will write for one hour. After writing, feel free to debrief, share thoughts or get advice. Our meetups are a safe space for writers to work on their craft. No one will read or critique your writing. Kaldi's Social House website: https://www.kaldissocialhouse.net/ \* Resource \* Many thanks to Justin for putting together a shared file of resource discussed at the meetings. Feel free to add to it! [https://docs.google.com/spreadsheets/d/13LONNjZvsO5hEXM7NsBnWCgy3GgPgjAbQxE0lPxp7hc/edit?usp=sharing](https://docs.google.com/spreadsheets/d/13LONNjZvsO5hEXM7NsBnWCgy3GgPgjAbQxE0lPxp7hc/edit?usp=sharing)

This is an **event at 1801 Robert Fulton Dr., Reston, VA 20191** (All participants must have RSVP'd). We continue exploring the foundational Buddhist sutra: the **Heart Sutra**. This the shortest sutra but the most fundamental. Our meeting schedule will be as follows: * **40 minutes:** Sitting meditation * **5 minutes:** Break * **45 minutes:** Group discussion of the Heart Sutra. During the sitting meditation session, we will provide you with a non-roller chair (or feel free to bring in your own meditation pad/pillow). If you are a first timer, detailed instructions will be provided when you are here at 1801 Robert Fulton Drive).

We will hike the famous Fairfax County Cross County Trail (CCT). We’ll depart from the Lake Audubon pool area and follow the CCT trail north for three miles and back three miles for a total of 6 miles. The route features a pleasant mix of dirt, gravel, and paved surfaces, with a few gentle hills—none exceeding 200 feet. Along the way, we’ll also enjoy a one-mile stretch of the W&OD Trail. After the hike, we’ll head to Lake Anne Brew House, an award-winning spot known for its small-batch beers and beautiful views overlooking Lake Anne. Hike parking along Twin Branches and Glade Dr. A detailed map of the CCT is located here: https://www.fairfaxcounty.gov/parks/trails/trail-buddy

This is an in-person event hosted by Sahaja Yoga meditation. We offer free meditation sessions and everyone is welcome to join and experience the peace within!

DC iOS returns to the Capital One campus for another meetup! And not only just DC iOS, we are collaborating with [iOSoHo](https://www.meetup.com/iosoho/), [DC Android](https://www.meetup.com/dcandroid/), [New York Android](https://www.meetup.com/new-york-android-engineers/) and the Dallas iOS Developers Group for a big combined meetup! Come and meet with fellow Apple AND Android developers in the DC Area, enjoy some food, networking, and a great tech talk! PLEASE INDICATE IF YOU WILL BE ATTENDING IN PERSON OR OVER ZOOM. **Agenda (NOTE THE LATER START TIME):** • 6:00 PM - Doors Open (in-person attendees). **Don't forget your ID!** • 6:30 PM - Welcome (in-person and Zoom attendees) • 6:35 PM - **First Talk: From Shared Logic to Shared Pixels: A KMP & CMP Deep Dive** (Live from DC) • 7:05 PM - Community Announcements • 7:15 PM - **Second Talk: Swift on Android** (Virtually from NYC) • 7:45 PM - Networking **First Talk Description:** • From Shared Logic to Shared Pixels: A KMP & CMP Deep Dive Clinton Teegarden Explore the complete lifecycle of Kotlin and Compose Multiplatform, tracing the journey from compiler mechanics down to the practical day-to-day developer experience. By building a Flappy Bird-style game, we'll unpack how shared UI rendering actually works while navigating the realities of iOS interoperability and common architectural gotchas. You'll leave with a clear roadmap for seamlessly translating shared business logic into performant, cross-platform pixels. Clinton is a Distinguished Engineer at Capital One with a focus on Mobile and AI core platforms **Second Talk Description:** • Swift on Android Marc Prud'hommeaux The release of Swift 6.3 features official support for the Android platform. This is the culmination of over 10 years of effort to bring the Swift language to Android, first through a series of independent and uncoordinated projects and then eventually coalescing into an official Android Workgroup under the umbrella of the Swift project. The result is the Swift SDK for Android, a cross-compilation Swift SDK that can be used on macOS and Linux to compile Swift code into the various Android architectures as a native library. But what can you actually do with Swift on Android? Far from being limited to just libraries for sharing business logic between Android and iOS, you can, in fact, use it to build and distribute entire apps. This talk will discuss the various ways in which the Swift SDK for Android can be used to create applications, from the lowest-level manual native interaction with the Android NDK and SDK, to synthesizing Java bindings generated with the nascent swift-java project, all the way up to creating full Jetpack Compose powered apps using [Skip.dev.](http://Skip.dev.) Swift is now a contender among the languages that can be used to build applications for both iOS and Android. While it is a newer entrant compared to the established players like Dart, JavaScript, and Kotlin, it features some distinct advantages that make it worth considering for your next app project. Marc Prud'hommeaux has been developing apps for iOS and Android since 2008, and was the author of the very first ebook reader for the iPhone: Stanza. He has worked in a variety of roles over the years, designing and building apps for giants like Amazon, Bose, and the New York Times. In 2022 he started [Skip.dev](http://Skip.dev) ([https://skip.dev](https://skip.dev/)) with the vision of bringing Swift and SwiftUI application development to Android, and is one of the founding members of the Swift Android Workgroup. He is also the founder of the non-profit App Fair Project ([https://appfair.org](https://appfair.org/)) and an advocate for software freedom. Zoom Link: [https://us06web.zoom.us/j/86441046804?pwd=l2Thmnyi92YAQmCd1iqbUuo9GRRl1R.1](https://us06web.zoom.us/j/86441046804?pwd=l2Thmnyi92YAQmCd1iqbUuo9GRRl1R.1) **Location:** Capital One, C2 Building 1680 Capital One Drive, Mclean VA, 22102 100A Visitor parking is either in the garage attached to 1680 Capital One Drive, or the open lot next to 1600 Capital One Drive. After that you will walk over to the main entrance of 1680 Capital One drive, and then walk around the right to the corner to room 100A For the metro, take the Silver Line to the McLean metro stop, then walk into main campus (about a 5 minute walk). From there, walk to the main entrance of 1680 and then go to room 100A **What you need to bring:** ID **When to arrive (NOTE LATER THAN USUAL START TIME):** Doors open at 6:00pm ET Event will start at 6:30 pm ET **Will food and drinks be provided?** Yep! **Will there be rapid testing provided?** No **Will masks be required?** No

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.

White House Area Architecture and Redesigns: Triumphs & Trials, Monday April 20, 5:30 pm!! There's been many discussions of late about building and reconstructions in and near the White House. The East Wing. A Triumphal Arch. Painting the Eisenhower Executive Office Building (EEOB). Controversy over such matters are nothing new, and indeed have been with us since the founding of the capital city. So, let's take a stroll around the White House complex and nearby streets, and explore the debates over buildings, rebuildings, demolitions, & renovations that have broken about across 230 years! And to learn about the fascinating architecture of these locales. Where: Meet at the beautiful Organization of American States building, 200 17th St., N.W., Washington DC. When: 5:30 pm. About 2 hours in length. Pre-Register and Prepay via— Eventbrite: [https://www.eventbrite.com/e/white-house-area-architecture-and-redesigns-triumphs-trials-tickets-1987628990817?aff=oddtdtcreator&keep_tld=true](https://www.eventbrite.com/e/white-house-area-architecture-and-redesigns-triumphs-trials-tickets-1987628990817?aff=oddtdtcreator&keep_tld=true) Or send $22 to PayPal to: [paypal.me/EMoser460](http://paypal.me/EMoser460) Or pay $22 in cash at the start of the tour. What: The White House, Lafayette Square, Pennsylvania Ave., the Mall, and 15th and 17th Streets have been witness to two centuries of astonishing architecture. We will explain the back story of many of these noted edifices, drawing from the following: • The secrets of the Washington Monument • The hidden architecture of the White House • How the Oval Office came about • The East Wing: Past and present • Astonishing events at the Blair-Lee House • The tragic architect of the Eisenhower Executive Office Building • New Orleans in D.C.: The Trade Representative's building • The citizen who financed the most building in D.C. • Artwork: Sculptures and statues • Architects: The finest designers in Washington • Jackie Kennedy's role • Where the creator of St. Patrick's Cathedral fits in • Vanished mansions • White House swimming pools, bunkers, bowling alleys • The hidden slave house • How a White House rebuild almost killed the President • The lay of the land before the DC was built • The astonishing reason the Treasury Building got its height • The battle to preserve a historic bank--and bar • Jefferson's role in designing the capital • Where Mt. Vernon was saved And more!! Who: Your host is a former writer for Jay Leno’s “The Tonight Show”, a former presidential speechwriter, and writer of a book on the history of Lafayette Square: [https://www.amazon.com/White-Houses-Unruly-Neighborhood-Lafayette-ebook/dp/B082ZVDCD7/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=1555118270&sr=1-1-catcorr](https://www.amazon.com/White-Houses-Unruly-Neighborhood-Lafayette-ebook/dp/B082ZVDCD7/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=1555118270&sr=1-1-catcorr) One of his latest books is a thriller set in historic Old Town Alexandria, Virginia, and involving debates over the preservation or removal or historic artefacts-- [https://www.amazon.com/OLD-TOWN-HORROR-Americas-Historic-ebook/dp/B0BX27RWYG/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=&sr=](https://www.amazon.com/OLD-TOWN-HORROR-Americas-Historic-ebook/dp/B0BX27RWYG/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=&sr=) We’re on TripAdvisor: [https://www.tripadvisor.com/Attraction_Review-g28970-d12791843-Reviews-Lafayette_Square_Tour_of_Scandal_Assassination_Intrigue-Washington_DC_District_of.html](https://www.tripadvisor.com/Attraction_Review-g28970-d12791843-Reviews-Lafayette_Square_Tour_of_Scandal_Assassination_Intrigue-Washington_DC_District_of.html) Nearest metro stations: Farragut North and West Weather should be cool. Restaurants nearby for afterwards at the Old Ebbitt Grill and the Hamilton Questions? Ask away! Email: [191.ep.jm.56@proton.me](mailto:191.ep.jm.56@proton.me) Think history’s boring and irrelevant? Think again!!

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.

If you love A Cappella Singing come check out the Harmonizers and Metro Voices...The lower voice and treble voice choruses- both part of the Alexandria A Cappella Collective. If you love 4-part harmony you'll want to visit us! We will be rehearsing on April 21st at Fairlington Presbyterian Church, 3846 King St., Alexandria, VA 22302. We pride ourselves on providing opportunities for everyone to sing. We welcome everyone to visit our rehearsal and enjoy the singing while learning more about us!

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.

We invite you to an in-person session in Seattle exploring the real impact of AI on knowledge-driven industries — from shifting economics and the disruption of traditional SaaS and consulting models to where organizations can still build lasting competitive advantage. As AI platforms like ChatGPT, Claude, and Gemini continue to redefine how work gets done, organizations face a critical question: how can they adapt, remain competitive, and create lasting value? We’ll discuss practical strategies for integrating AI while preserving human expertise, along with actionable approaches to upskilling teams for an AI-driven workplace. Drawing on real-world experience from training thousands of professionals and deploying AI solutions, this session will provide clear, applicable insights for today’s evolving landscape. Following a short presentation, the session will open into an interactive discussion where attendees can share perspectives and explore key questions around the evolving role of humans, organizational adaptation, and staying competitive in an AI-first world. **Who should attend:** • Executives and managers in SaaS, consulting, and knowledge-driven organizations • Professionals exploring AI upskilling and workforce transformation • Anyone interested in the future of AI and knowledge work 📍 **Location:** Data Science Dojo, 5010 148th Ave NE, Suite 200A, Redmond, WA, United States 🔗 **Google Maps:** [https://lnkd.in/d8WA-yNc](https://lnkd.in/d8WA-yNc) **💻 Online Access:** A livestream will be available for those unable to attend in person; however, the full interactive experience is reserved for in-person participants.