About Us

Software development and creative design from the ground up. Building web and mobile solutions for major brands since 2009.

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Who We Are

Who We Are

SQUAREONE is a software development company based in Seoul, Korea, with more than 15 years of experience building custom software, web applications, and mobile apps.

We bring deep domain expertise across AI, finance, crypto, gaming, ecommerce, sports, and other fast-moving sectors.

Our Team

We are a 40-person team partnering with startups, scaling companies, and enterprise organizations around the world to build scalable digital systems used by millions of people.

Combining strong engineering with real industry understanding, we deliver practical software solutions to complex business challenges.

Our Clients

Elan Educação e InglêsActoz SoftT-IME EducationJeonbuk Hyundai MotorsSevenLuckWalkerhillRiot Games#troveHyundaiPeytoPERI Pythia ProtocolgolfTecElan Educação e InglêsActoz SoftT-IME EducationJeonbuk Hyundai MotorsSevenLuckWalkerhillRiot Games#troveHyundaiPeytoPERI Pythia ProtocolgolfTec

What Sets Us Apart

Practical AI

We focus on AI that solves real business problems. That means building tools and systems that fit real workflows, support real teams, and create value beyond the prototype stage.

Tailored Solutions

Every business has different goals, systems, and constraints. We build software around what each client actually needs, not around one-size-fits-all templates.

Strong Execution

Good ideas only matter if they are delivered well. We put equal emphasis on planning, engineering quality, usability, and long-term maintainability.

Industry Understanding

We bring real domain knowledge across AI, finance, crypto, gaming, ecommerce, sports, and other fast-moving sectors. That helps us make better decisions and build solutions grounded in how each business actually works.

Built to Grow

Whether we are building for web, mobile, AI, or emerging technologies, we focus on creating products that are scalable, reliable, and ready to evolve over time.

Long-Term Partnership

We aim to be more than a delivery partner. We take ownership, communicate clearly, and build with the care needed to support lasting products and long-term relationships.

Tech Stack

AI / Machine Learning

  • PyTorch
  • TensorFlow
  • scikit-learn
  • Hugging Face
  • OpenAI API
  • LangChain
  • LlamaIndex
  • vLLM
  • Ollama
  • DSPy
  • Qdrant
  • Pinecone
  • RAG
  • MLflow
  • W&B
  • FastAPI
  • BentoML
  • Docker
  • Kubernetes
  • Amazon SageMaker

Web and Mobile

  • React Native
  • SwiftUI
  • Flutter
  • Java
  • Kotlin

Data and Infrastructure

  • PostgreSQL
  • MySQL
  • MongoDB
  • Clickhouse
  • Redis
  • Elasticsearch
  • RabbitMQ
  • Kafka

Cloud and DevOps

  • Amazon Web Services
  • Docker
  • Kubernetes
  • Terraform
  • GitHub Actions

Blockchain / Web3

  • Solidity
  • Rust
  • Anchor
  • Hardhat
  • Foundry
  • Ethers.js
  • Viem
  • Solana Web3.js
  • SPL Token
  • Metaplex
  • OpenZeppelin
  • ERC-20
  • ERC-721
  • ERC-1155
  • ERC-165
  • ERC-173
  • ERC-2981
  • ERC-4337

Gaming / Real-Time Systems

  • Unity
  • Unreal Engine
  • PixiJS
  • Three.js
  • WebSockets
  • cocos2d-x

Front-End

  • React
  • Next.js
  • TypeScript
  • Tailwind CSS

Back-End

  • Python
  • Node.js
  • Go
  • Java
  • C#
  • Rust

Design

  • Figma
  • Photoshop
  • Illustrator
  • After Effects
  • Premiere Pro