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Barq Wallet (Fintech - Wallet) - iOS Developer, Barq Fintech / Xint, 2024-2025. Secure wallet application with instant transfers, card management, transaction history, and Raast integration. Built with MVVM architecture, Combine framework, and clean network layers. Features include secure authentication, real-time balance updates, transaction filtering, and seamless payment processing. Focus on memory optimization and smooth UI transitions for high-performance user experience. Tech: Swift, MVVM, Combine, REST APIs, CoreData.
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Flowlet is a real-time AI finance assistant mobile app designed to make financial management feel less complex and more actionable.
The product combines everyday banking, expense tracking, smart budgeting guidance, transfers, and financial insights in one mobile experience. The goal was to create a beginner-friendly neobank product that communicates trust and clarity while feeling more energetic and approachable than traditional banking apps.
The UX uses a dashboard-first structure, clear financial hierarchy, modular cards, visual charts, and simplified transfer flows. AI Coach adds conversational guidance, helping users understand spending, plan ahead, and make better financial decisions.
The visual system combines bold typography, soft gradients, vibrant photography, playful UI details, and colorful financial indicators to create a distinctive fintech identity.
Looks sick 🔥
NEW CASE STUDY!
🙌 E-Strum: App + Device for Tracking Light Availability at Home
ABOUT THE APP:
Scheduled and unscheduled power outages in Ukraine made it hard for people to plan their day. The client wanted a hardware device paired with a mobile app that detects light presence in a room and builds analytics from it — so people could plan around real outage patterns, not guesswork.
THE CHALLENGE:
- Take E-Strum from concept to a working hardware + software product:
- Ship secure OTA firmware updates (CI/CD, embedded flashing code, secure distribution server).
- Handle high device load without degrading service.
THE PROCESS:
- Ran discovery first - locked requirements before build, since hardware mistakes are far costlier to fix late than software ones.
- Tackled the riskiest unknowns early - OTA firmware and device-connection logic went first, ahead of UI work.
- Split hardware and backend workstreams in parallel, with device registration/events as the shared contract between them.
THE RESULTS
- Rolled out OTA firmware updates to 1,000+ connected devices with zero manual re-flashing required 💯
Kept backend response times under 300ms even as concurrent connected devices scaled past 1,200 🙌
Held device-connection success rate at 97%+ on first attempt under real-world Wi-Fi conditions 🧠
Secure phone payments UI concept
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This is the kind of thing I share daily while building — x.com/rightnextstep
