Tech stack

What we build with.

The tools our partners and specialists ship with, from first prototype to production.

Mobile

  • Swift
  • SwiftUI
  • UIKit
  • Kotlin Multiplatform
  • React Native
  • Auto Layout
  • SnapKit
  • Swift Concurrency
  • Combine
  • GCD
  • OperationQueue
  • Core Data
  • SQLite
  • Keychain
  • Codable
  • URLSession
  • Alamofire
  • Offline-first sync
  • iOS
  • iPadOS
  • macOS
  • Compose
  • Dart

AI / LLM

  • Claude API
  • OpenAI
  • Gemini
  • AI agents
  • RAG
  • MCP
  • LangChain
  • Multi-agent systems
  • Function calling
  • BM25
  • Re-ranking
  • Hybrid search
  • Prompt engineering
  • Tone-of-voice alignment
  • Context management
  • Apple Foundation Models
  • NLContextualEmbeddings
  • On-device ML

Design

  • Figma
  • Design systems
  • UX research
  • Prototyping
  • Branding
  • Photoshop
  • Illustrator
  • User flows
  • Wireframing
  • Interaction design
  • Information architecture
  • Typography
  • Visual design
  • AI design tools
  • SaaS & web apps
  • Mobile apps
  • E-commerce
  • Landing pages
  • Pitch decks
  • Banners & promo video

ML

  • PyTorch
  • TensorFlow
  • Hugging Face
  • FAISS
  • Recommendation engines
  • Python
  • scikit-learn
  • XGBoost
  • Sentence-BERT
  • E5
  • Embeddings
  • OpenSearch
  • ANN / HNSW
  • Collaborative filtering
  • Two-tower models
  • Cold-start
  • Content moderation
  • NLP
  • Computer vision
  • Image classification
  • Human-in-the-loop

Web

  • React
  • TypeScript
  • Shopify
  • SEO & GEO websites
  • Tilda

Backend

  • Go
  • Python
  • PostgreSQL
  • FastAPI
  • Scala
  • PHP / Yii2
  • REST APIs

Data & MLOps on AWS

  • SageMaker
  • Kinesis
  • Lambda
  • DynamoDB
  • ElastiCache
  • S3
  • ML pipelines

DevOps

  • Docker
  • GitHub Actions
  • Fastlane
  • GitLab CI
  • Jenkins
  • TestFlight
  • App Store Connect
  • Xcode
  • Git
  • Provisioning & code signing

Messaging & channels

  • WhatsApp API
  • Telegram Mini Apps
  • Telegram API
  • Instagram API
  • Website chat widgets

Blockchain

  • TON
  • Solidity
  • Tact
  • C++ VIZ node (Graphene)
  • Client SDKs: Swift, Go, Python
  • On-chain data in iOS apps

Architecture

  • Clean Architecture
  • MVVM
  • VIPER
  • Modular SPM
  • CocoaPods
  • Reactive data pipelines

Testing & quality

  • XCTest
  • Swift Testing
  • Unit & integration tests
  • Instruments
  • Crash-report triage

Business systems

  • AI sales automation
  • CRM with payment gateways
  • Automated content factory
  • DCF financial modeling

Industries

  • Healthcare
  • Banking
  • Grocery retail (100K+ SKU)
  • Enterprise CMS & CRM
  • Web3 / TON
  • Telegram Mini Apps
  • SMB & startups

Questions we get asked

What tech stack does NextGenSoft use?

Swift and SwiftUI for native iOS apps, with Kotlin Multiplatform and React Native for cross-platform ones. Claude, OpenAI and Gemini models with RAG and MCP for AI agents. React and TypeScript, Shopify or Tilda for websites. Go, Python, PostgreSQL and FastAPI on the back end, and Docker, GitHub Actions and Fastlane to ship.

Native iOS or cross-platform: which do you build?

Both. Native apps in Swift and SwiftUI are the core of our mobile work, and Kotlin Multiplatform and React Native are in the stack for apps that share one code base across iOS and Android. Which fits depends on the Apple features you need, hiring and whether a web app should come first.

Swift vs Flutter vs React Native: a founder's guide

Which AI models and tools do you build agents with?

Claude, OpenAI and Gemini models, with RAG, hybrid search and re-ranking over your documents, function calling and MCP to reach your tools, and multi-agent systems. For features that run on the iPhone itself: Apple Foundation Models and on-device ML.

AI automation and AI agents

Which platforms do you build websites and stores on?

Custom sites in React and TypeScript, Shopify for a standard catalog that needs payments now, and Tilda for a simple catalog or a one-page site on a small budget. We have shipped stores on all three: Esturión on Shopify, Barber & Co on Tilda and RYTM on its own platform.

Shopify, custom or Tilda: which fits your store

Which industries have you built for?

Healthcare, banking, grocery retail with catalogs of 100,000+ SKUs, enterprise CMS and CRM, Web3 on TON, Telegram Mini Apps, small businesses and startups. Many of these projects are under NDA, so some cases name the product, not the client: recipe-to-cart recommendations for a top-15 global grocer is one.

All cases

How do you test and release apps?

iOS code is tested with XCTest and Swift Testing and profiled in Instruments, and crash reports are triaged after release. Builds go out through Fastlane, TestFlight and App Store Connect, with CI in GitHub Actions, GitLab CI or Jenkins.