Mobile Engineer Flutter & Dart || building lightning payment ||opensource contributor

Joined November 2020
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Hello everyone 👋 My name is Usman Umar Garba I’m a 3rd-year Computer Engineering student and a Mobile Engineer (Flutter), actively building cross-platform applications. I’m currently expanding into backend development with Python (APIs) and exploring Bitcoin &
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Canadians are increasingly using Bitcoin and stablecoins to send money home. We put together a step-by-step guide showing how to send Naira directly to Nigerian bank accounts from Canada with @TapnobHQ. tapnob.com/blog/how-to-send-…
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I build apps.
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The closing panel of the Freedom Tech Track at the 2026 @OsloFF brought together @ihate1999, @AnaiseKanimba, @obi, and @waithiraah to discuss one of the most important questions in the bitcoin ecosystem: how do we make bitcoin practical for everyday people? A key theme throughout the discussion was that Africa represents one of the largest opportunities for bitcoin adoption globally. From payments and savings to financial inclusion and economic freedom, the continent is already demonstrating real-world bitcoin use cases at scale. The conversation explored how builders, entrepreneurs, and advocates are creating tools that expand freedom, reduce barriers to access, and make bitcoin more useful in people's daily lives. Watch the discussion here: youtube.com/live/Q-7xMYnMXfc… #OFF26
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Calling all freedom tech builders! We are seeking volunteers for a live design review at the @OsloFF Making Freedom Tech Beautiful workshop. Face it. Freedom tech only matters if people can actually use it. Even the most powerful applications fall short if they feel confusing or too technical. Watch @MouxDesign of @bitcoin_design and our very own @satsie use AI to apply tried and true UX principles and draw inspiration from award winning design. Participants will leave with a Claude skill that preserves the exact process from the workshop. Make your app as empowering as the decentralized, censorship resistant technology it is built on. Make it something individuals all over the world can understand, adopt, and rely on. Builders need not be physically present for the workshop. Priority given to projects funded by @HRF. Does this sound like something you're interested in? Reply to this post or send us a DM!
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Next week, the Q2 pathways are set to begin. 🚀 This quarter, developers will be joining Rust for Bitcoiners and Language Clubs. Rust for Bitcoiners 🦀 is designed for developers who want to deepen their Rust skills. The pathway focuses on building the Rust knowledge needed to engage with Bitcoin projects, with curated resources, structured weekly progress, and support from peers and faculty along the way. Language Clubs focuses on strengthening programming fluency in languages commonly used in Bitcoin development. The pathway helps developers build the language foundations that make meaningful open‑source contribution possible later on. Participants work through curated learning tracks while learning alongside peers in a supportive environment. Both pathways emphasize peer learning, structured progress, and practical skill development. We’ll also be using the hybrid engagement model designed to support more developers without compromising the learning experience. Each pathway will be running in two formats: a live cohort and a self‑paced track, giving developers more flexibility in how they participate while still benefiting from the Builders community. To learn more about the pathways and join our community, start here: btrust.tech/builders/apply Apply to join the waitlist for future cohorts here: btrust.homerun.co/btrust-bui…
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Lightning⚡ is best known as a network for fast bitcoin payments. But what if the same infrastructure could also carry private messages? That’s the idea behind onion messages🧅. They rely on onion encryption, a technique where data is wrapped in multiple layers of encryption, like layers of an onion. As the message travels through the network, each node removes just one layer, learning only where the message came from and where it should go next. No single node ever sees the full route or the original sender and final recipient. In this article, @Thevelopher explores how onion messages work, how they differ from traditional payment routing, and how they’re being implemented in LND. The piece also looks at why this small protocol change could turn Lightning into more than just a payment network. If you’re curious about how Lightning might evolve into a private communication layer, read the full blog to learn more: blog.btrust.tech/onion-messa…
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Today we kicked off Flutter Design Patterns and Best Practices📚 We explored: • declarative vs imperative UI • the roles of widgets, elements, and render objects …and much more. Missed it? Join us next session!🚀 And keep an eye out for our book club wrapped👀
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Big upgrade for Sabi Wallet! 🚀 On-chain Bitcoin send & receive is now live powered by @Breez_Tech • Send BTC on-chain directly • Receive on-chain Bitcoin with instant QR • Full non-custodial control Lightning was already fast now on-chain is here too
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Studeylearn just won the Best Pitch award at the Renaissance Innovation Labs (@RxLabsHQ) AI Lab Demo Friday. A huge moment for a product built to transform how students study and learn globally. I’m still buzzing from the experience. I showcased a live demo of the @studeylearn mobile app, walking through the vision and why this product truly matters for students around the world. The energy in the room was amazing, from sharp questions by judges to insightful feedback from fellow developers and techies. This pitch session pushed me to think deeper and refine the product even further. It was also inspiring to watch other brilliant founders and developers present their ideas, the level of innovation was on another level. Studeylearn is launching next month, and beta testing kicks off next week. I’m focused on taking all the feedback, improving the experience, and building something that genuinely impacts students globally. Join the waitlist today 👉 studeylearn.com This is just the beginning.
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We are hiring at @zeropsio! We are expanding the DevRel team and hiring for two critical roles: - Technical DevRel Engineer - Developer Advocate (Community Builder) 100% remote. Full descriptions are available at the link below. I'll go live later to talk about this
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2am late night building apps
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NEW: 🇳🇬Nigerian Bitcoin Developer Builds First Quantum-Resistant Wallet Recovery Prototype. A Nigerian Bitcoin developer has introduced a working prototype designed to protect Bitcoin wallets from potential quantum computing attacks.🚀 Read More: bitcoinnews.africa/olaoluwa-…
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Techies we’ve just hit 1000 users in collan🔥🔥 I was struggling with networking in tech so i built @collan_devs an application that helps you techies Connect and collab with other techies In just 1 month after launch we’ve grown to… User - 1000 Daily active user - 350 🔥 So we’ve decided to build the collan App💜 I’ll drop the App launch date soon 🫶 Thanks to all collan family Lfg 🔥 We’re building the future 📈
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Excited to support the first BitDevs meetup in Ethiopia 🇪🇹 Huge shoutout to @KalKassa and the entire team for making this possible. This is a big step toward building a Bitcoin developer ecosystem in the country. Follow @BitDevsAddis to stay in the loop on upcoming meetups and more. RSVP here: luma.com/tafunqff 🚀
BitDevs Addis Ababa First pioneered in New York City, BitDevs is a global network of Bitcoin-only technical meetups that brings together developers, researchers, and enthusiasts who care deeply about Bitcoin and its future. Big Event – Thursday, April 23, 2026
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ML Engineer here 🤲
If my partner calls me 'ml,' I'll think he's talking about Machine Learning instead of the other term 🥲 May this ML title come to pass 🤞🤞
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Building something exciting 🚀 LinkMeUp a social connection platform that lets you share your entire digital identity using a single link or QR code. No more fragmented profiles. No more missed connections. Would love your feedback 👇 🔗 linkme-up-app.vercel.app/ #buildinpublic
Just finished building the UI for my latest project: AI Book Summarizer! 📚✨ find the desing in dribble and replicate it using flutter check it out here:github.com/Ugarba202/ai_book… #FlutterDev #BuildInPublic #Dart #365DaysOfCode
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Final Day of the Bitcoin & Lightning Payment Integration Masterclass: Today’s focus: 👉 Self-hosted Bitcoin payments with BTCPay Server Learning how to run your own payment infrastructure = real Bitcoin power 💪 Huge thanks to @btrust_builders , @Mavapay_Money , @FreeRoutingAf
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We’re excited to announce the Q1 Btrust Developer Grant recipients, our largest cohort to date. Ten Bitcoin open-source developers have been awarded grants, including six starter grant recipients and four open-source cohort members, including two renewals and two promotions from starter to long-term grants. This cohort also marks a couple of important firsts: support for Cashu development and the introduction of a dedicated research role within the open-source cohort. This builds on our work across the stack, from core protocol development to wallets, privacy tools, and user-facing applications. Learn more about Q1 recipients and what they’re working on here: x.com/i/status/2039359189449…
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I’m Smith, a 18yr old mobile developer based in Lagos I love shipping.. I build AI-powered apps and talk about tech & what’s coming.. let’s connect 👇 quote this with what you do
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