Marketplace›Web and tech›Software and apps›Scalable full-stack and Web3 dApp development with secure smart contracts
Scalable full-stack and Web3 dApp development with secure smart contracts

Scalable full-stack and Web3 dApp development with secure smart contracts

Software and apps · delivered in 7-45 days

We build scalable web applications and blockchain solutions, spanning fast Web2 platforms through to production-ready dApps and smart contracts on Ethereum and Solana. Every engagement covers backend architecture, real-time systems and Web3 integrations, giving you a finished, dependable product rather than isolated code. Our focus stays on performance, security and clean system design so your build is ready to scale.

Basic

  • Simple frontend or backend build, or a single smart contract
  • Core API or UI functionality
  • Wallet integration where Web3 is involved
  • Readable code with basic documentation
  • 2 rounds of revisions

Standard

  • Full-stack application covering frontend and backend
  • Database integration (MongoDB or Postgres)
  • Authentication via JWT or wallet login
  • Smart contract integration or advanced backend features
  • REST/GraphQL APIs and a responsive interface
  • Basic unit and integration testing
  • Deployment-ready setup
  • 3 rounds of revisions

Premium

  • Complete end-to-end build across frontend, backend and blockchain
  • Smart contract development in Solidity or Rust
  • Advanced Web3 integrations, including multi-chain logic
  • Real-time features such as WebSockets and event-driven systems
  • Scalable architecture with microservices, caching and queues
  • Performance and gas optimisation
  • Full testing suite for backend and smart contracts
  • Dockerised, cloud-ready deployment
  • Detailed documentation and support
  • 6 rounds of revisions

Full-stack and blockchain builds, Web2 plus Web3

We deliver production-ready applications that blend traditional web engineering with blockchain functionality. Whatever the brief, whether it is a solid backend, a modern web app, or a working dApp with smart contracts, we take it from concept through to a deployed, working system. What you receive is a finished product, not a pile of source files.

What is delivered

  • Full-stack web application (frontend and backend)
  • Secure smart contracts written in Solidity or Rust
  • Web3 integrations covering wallets, transactions and on-chain data
  • REST or GraphQL APIs together with real-time systems via WebSockets
  • Database design using Postgres or MongoDB
  • Authentication and authorisation, including JWT, OAuth or wallet-based login
  • Unit and integration testing for backend and smart contracts
  • Docker-based, cloud-ready deployment
  • Clean, maintainable, production-grade code
  • Documentation and a setup guide

Our process

1. Understanding the brief

We explore your idea in depth, agree the scope and technical approach, and suggest refinements for scalability and usability.

2. System design

We plan backend architecture (microservices or monolith), database schema, APIs, and smart contract design where blockchain is involved.

3. Build

Frontend work uses React or Next.js, backend uses Node.js or Nest.js, and smart contracts are written in Solidity or Rust with Anchor.

4. Integration

We connect frontend, backend and blockchain layers, add wallet integration such as MetaMask or Solana wallets, and wire in real-time features where needed.

5. Testing and tuning

Smart contracts are tested with Mocha and Chai, alongside API and system testing, gas optimisation and performance tuning.

6. Deployment

Applications are containerised with Docker, supported through cloud deployment, and CI/CD guidance is available if required.

7. Handover and support

You receive full documentation, a walkthrough of the system, and support after delivery.

Package summary

The basic tier suits a simple Web2 app or a standalone smart contract, ideal for small features or an early MVP. The standard tier adds a full-stack build with backend APIs, either Web3 integration or advanced backend features, plus authentication, database and deployment setup. The premium tier covers a complete Web2 and Web3 product: smart contracts, dApp, backend system, real-time features, microservices, scaling support, and advanced additions such as AI integrations, Kafka or caching.

Turnaround

Timelines depend on complexity, with quality prioritised over speed across all tiers, from quick basic jobs through to multi-week premium builds.

Background

Our development work spans DeFi protocols, wallets, decentralised exchanges, staking systems and on-chain games across Ethereum and Solana, backed by strength in system design, microservices and real-time architecture, using React, Next.js, Node.js, Nest.js, Solidity, Rust and Docker.

Why choose this service

  • Security-first approach, particularly for smart contracts
  • Performance-optimised systems with efficient APIs and gas usage
  • End-to-end ownership, removing the need to coordinate multiple developers
  • Product-focused thinking, with suggestions for improvement rather than pure execution
  • Clean, scalable architecture built for real users
  • Clear communication and reliable delivery

Who this suits

  • Startups building MVPs or scalable products
  • Founders launching Web3, DeFi or AI applications
  • Businesses needing robust backend systems
  • Anyone wanting a serious, production-grade build

For buyers ready to turn an idea into a working, scalable product, we provide the domain the order relates to and a clear brief to get started.

What happens after you buy

Your order opens its own thread here the moment it is paid, and everything about that order - questions, changes and the final report - happens in it.

Questions people ask

Do you build both Web2 and Web3 applications?

Yes. We handle both Web2 builds, covering frontend and backend, and Web3 work, including smart contracts, dApps and blockchain integrations on Ethereum and Solana.

Can you handle the entire project end-to-end?

Yes. We manage the whole project, from planning and system design through development, testing and deployment, so you avoid coordinating several separate developers.

Do you provide smart contract development and security?

Yes. Smart contracts are written in Solidity or Rust, optimised and tested using recognised practices to reduce risk and support reliability.

Will my application be scalable?

Yes. Systems are designed with scalability in mind, using clean architecture, optimised databases and performance-focused backend work so growth is manageable.

Do you provide deployment and post-delivery support?

Yes. Deployment-ready setups using Docker or cloud services are provided, along with support after delivery for fixes, guidance or future changes.

What do you need from me to get started?

A clear outline of your project and its key features, plus any references you have. An undefined brief is fine, we can help shape it together.

How do you ensure communication and updates?

Regular updates are provided throughout, with responsive communication to keep the build aligned with your expectations.

Can you work with my existing codebase or project?

Yes. Existing projects can be reviewed, improved or extended, whether that means fixing issues, adding features, or bringing in Web3 functionality.

People also buy

Software and apps

Backend development services

Backend development covering secure REST APIs, database integration, authentication and testing, built with Express.js and MongoDB, delivered in 5 days for $25.99.

$25.99PER ORDER 5 days