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DevGorithm
Delivered work

Every screen here is from a product we built. Filter by the engineering discipline or the technology you care about, then step through the flows.

Discipline
Technology

3 projects

Featured projectLive commerceMarketplaceSocial shopping

Soldout

Where live entertainment meets commerce.

A next-generation live commerce marketplace that brings sellers and buyers together through interactive livestreams, real-time auctions, social content and marketplace shopping. Sellers showcase products live while buyers watch, interact, bid, purchase, chat and discover — without leaving the experience.

  • iOS
  • Android
Our role
Product Development · Mobile Engineering · Backend Integration · Real-Time Systems

Soldout was designed as a complete social-commerce ecosystem, combining the pull of live streaming with the convenience of a modern digital marketplace. Products surface through live shows, auctions, short-form video, seller profiles and conventional listings. The engineering centre of gravity is real-time interaction: live video, bidding activity, messaging and auction state are coordinated so the experience feels immediate. Behind the app sits a scalable backend covering marketplace operations, auctions, users, sellers, orders, payments, notifications, media and real-time communication — built out with separate deployment environments, automated testing workflows, infrastructure optimisation, monitoring, security hardening and performance testing.

Soldout demonstrates DevGorithm's ability to engineer a complex, real-time marketplace where mobile applications, livestreaming infrastructure, auctions, payments, backend services, cloud infrastructure and social-commerce experiences work together as one product.

What we built

  • Live product selling and interactive livestreams
  • Real-time live auctions and bidding
  • Marketplace product discovery and purchasing
  • Seller storefronts and profiles
  • Short-form product videos and reels
  • Buyer and seller communication

Technology stack

  • Flutter
  • Dart
  • Node.js
  • Express.js
  • MongoDB
  • React
  • ZEGOCLOUD
  • Firebase
  • Stripe
  • WebSockets
  • DigitalOcean
  • Nginx
  • PM2
  • GitHub Actions

Soldout ecosystemShares its backend, marketplace and real-time services with Soldout Web.

Live selling room screen from Soldout

Live selling room

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Live commerceE-commerceWeb platform

Soldout Web

The Soldout live-shopping experience — built for the web.

Soldout Web extends the ecosystem beyond mobile, letting customers discover products, watch live shows, take part in auctions and interact with sellers directly from the browser.

  • Web
sold-out.com
Marketing landing screen from Soldout Web

Marketing landing

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Our role
Full-Stack Web Development · Real-Time Integration · API Integration

Rather than building a conventional storefront, the web experience was built on the same social and real-time commerce principles that power the mobile product. Customers explore the marketplace, discover sellers and products, join live selling experiences and participate in auctions with no app install. The platform talks to the same underlying APIs and services as the rest of the Soldout ecosystem, so marketplace activity stays synchronised across surfaces, and livestreaming and auction functionality were integrated into the browser to keep the product journey consistent between web and mobile.

Soldout Web demonstrates how DevGorithm extends complex mobile ecosystems into responsive web experiences while maintaining shared business logic, real-time functionality and a consistent user journey across platforms.

What we built

  • Responsive customer-facing marketplace
  • Live selling experiences
  • Browser-based livestream viewing
  • Real-time auction participation
  • Live bidding functionality
  • Product discovery

Technology stack

  • React
  • JavaScript
  • TypeScript
  • Node.js
  • MongoDB
  • ZEGOCLOUD
  • WebSockets
  • DigitalOcean

Soldout ecosystemShares its backend, marketplace and real-time services with Soldout.

CommunicationSocial technologyReal-time messaging

Kikko Mobile App

Communication designed to feel instant, natural and connected.

A modern communication platform built around real-time conversations, messaging and calling, with an architecture designed to grow into a broader connected digital ecosystem.

  • iOS
  • Android
Our role
Mobile Engineering · Real-Time Communication · Backend Integration

Kikko is a cross-platform application built to make conversations simple, immediate and reliable on iOS and Android. The core is messaging and conversations, with the foundations in place for richer experiences: audio and video calling, group conversations, notifications and deeper social functionality. Particular attention goes to call lifecycle and the native mobile experience — incoming calls, active calls, background states, reconnection behaviour and device-level calling are engineered to behave naturally on both platforms. A modular architecture means communication, payments, artificial intelligence and social experiences can progressively become part of the same ecosystem without compromising maintainability.

Kikko demonstrates DevGorithm's expertise in building communication products where real-time systems must work alongside native operating-system behaviour, background execution, push notifications, calling infrastructure and a maintainable cross-platform architecture.

What we built

  • One-to-one messaging
  • Conversation management
  • Group communication architecture
  • Real-time message delivery
  • Audio calling
  • Video calling

Technology stack

  • React Native
  • TypeScript
  • iOS CallKit
  • Android Native APIs
  • Push Notifications
  • WebSockets
  • Node.js
  • Firebase
Conversations screen from Kikko Mobile App

Conversations

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