# Effective > Custom software development company building mobile apps, web services, backend systems, and AI solutions. IT team outsourcing and staff augmentation. Based in Russia, working with clients worldwide. Effective (effective.dev) is an accredited IT company with 12+ years of experience and a team of 55+ engineers. We provide full-cycle software development and IT outsourcing services. Our clients include Yandex, MTS, SBER, IMAX, Walmart, FedEx, HeraMED, and Nuum. We offer an AI-powered project estimation bot on Telegram (@effectivedev_bot) that can evaluate project scope, timeline, and team configuration in under 5 minutes. ## Services - Custom Software Development: full-cycle product development from architecture to release - IT Outsourcing: dedicated teams and individual specialists embedded into client projects - Mobile Development: iOS (Swift, SwiftUI, UIKit), Android (Kotlin, Jetpack Compose), cross-platform (Flutter, KMP, React Native) - Web Development: React, Next.js, Angular with Redux, Zustand, NgRx - Backend Development: Java (Spring Boot), Golang (Gin/Echo), Python (Django/FastAPI), Node.js (Express/NestJS) - AI Agents & AI Solutions: LangChain, LangGraph, OpenAI, Claude, Gemini, Vertex AI, n8n, OpenClaw, RAG pipelines - Fullstack AI Engineering: React + FastAPI + LangGraph + PostgreSQL/pgvector, tool calling, MCP, evals, guardrails - QA & Testing: manual QA, automation, SDET - UX/UI Design - Solution Architecture - Fractional CTO ## Platforms - iOS, Android, Flutter, KMP, React Native - Aurora OS (Russian mobile platform): Qt/C++, Flutter/Dart - Telegram Apps: Bots, Mini Apps, Web Apps, Payments API, TON - AR/VR: Unity3D, Unreal Engine, Meta Quest, Pico VR, Apple Vision Pro - BDUI / Server-Driven UI ## Technology Stack - Frontend: React, Next.js, Angular, TypeScript, Tailwind CSS, SCSS, Styled Components - Backend: Java, Golang, Python, Node.js, REST, GraphQL, PostgreSQL, MongoDB, Redis, Docker - AI/ML: OpenAI, Claude, Gemini, LangChain, LangGraph, OpenAI Agents SDK, Vercel AI SDK, LlamaIndex, pgvector, Pinecone, Weaviate - Data Engineering: Apache Airflow, Kafka, Spark, dbt, BigQuery, Snowflake, ClickHouse - DevOps: Docker, Kubernetes, Vercel, CI/CD - Tools: Cursor, GitHub Copilot, LangSmith, Git, GitHub ## Open Source - [Effective Office](https://github.com/effective-dev-opensource/Effective-Office): Open-source project for office automation — meeting rooms, corporate TV, SMS routing on service phones ## Pages - [Homepage (RU)](https://effective.dev): Main page in Russian - [Homepage (EN)](https://effective.dev/en): Main page in English - [iOS Development](https://effective.dev/ios): iOS app development services - [Aurora OS Development](https://effective.dev/aurora): Aurora OS development services ## Contact - Email: contact@effective.dev - Company LinkedIn: https://www.linkedin.com/company/effective-band - CEO LinkedIn: https://www.linkedin.com/in/alexkorovyansky/ - Telegram channel: https://t.me/effectiveband - AI project estimator bot: https://t.me/effectivedev_bot - CEO Telegram: https://t.me/alexkorovyansky - Careers: https://omsk.hh.ru/employer/1418559