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Blockchain development

Smart contract development services built to be audited

A smart contract handles value on its own, in public, and usually can’t be changed once it is live. That makes careful design and testing far more important than speed. Our smart contract development services design contracts around the simplest model that works, test them heavily and prepare them for an independent security audit before launch. If you need an Ethereum smart contract developer, we build for Ethereum and EVM networks.

1,000+projects
delivered for businesses in the US and the UK since 2016
Weekly
progress updates once work starts, plus a monthly report
5.0
star rating on Google from our clients
What it is

What smart contract development services involve

Most of the risk in a smart contract comes from complexity: extra features, clever optimizations and permissions nobody needed. We start by asking whether a blockchain is the right tool at all, then design the smallest contract that does the job, with clear roles, limits and a plan for what happens if something goes wrong. Many ideas work better with a regular database and website, and we will say so if that is the case for yours.

Development follows a strict routine: well-reviewed libraries for standard parts, unit tests for every function, tests that try to break the contract on purpose, and deployment to a test network before anything touches real value. Admin keys sit in a multi-signature wallet that you control, so no single person can change the contract alone.

Signs you need smart contract help

  • You have a use case but no clear design
  • Your contract has no tests or audit
  • One key can change everything
  • Fees are high for simple actions
  • You need to know if blockchain fits at all
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What’s included

What’s included in our smart contract development services

Design, build, test and launch, with security at every step.

01

Use case review

An honest check of whether a blockchain and a smart contract fit what you want to do.

02

Contract design

Roles, permissions, limits and upgrade or pause plans documented before coding.

03

Development

Contracts written in Solidity using well-reviewed open-source libraries for standard parts.

04

Testing

Unit, integration and adversarial tests, plus a run on a public test network.

05

Audit preparation

Documentation and test coverage that help an independent auditor work quickly.

06

Deployment and keys

Mainnet deployment with admin keys in a multi-signature wallet you control.

In depth

Ethereum smart contract developer work, in depth

How we keep contracts secure, affordable and maintainable.

Simple beats clever

Every line of a contract is a line someone can attack. We use standard, well-reviewed building blocks for tokens, access control and upgrades, avoid unnecessary features and document every assumption. A simpler contract is easier to test, cheaper to audit and safer to run. We also optimize the parts users call most often, so everyday actions don’t cost more in fees than they need to.

Upgradeable or fixed?

Contracts that can’t be changed are more trustworthy but can’t be fixed. Upgradeable contracts can be fixed but add risk and need careful key management. We explain the trade-off for your case and, where upgrades are needed, protect them with multi-signature approval and time delays.

Independent audits

We test thoroughly, but nobody should audit their own code. For any contract that will hold meaningful value, we recommend an independent security audit before mainnet launch, prepare the documentation the auditor needs and fix anything they find before deployment. After launch, we monitor contract activity and alerts, and keep a written plan for pausing or responding if something unexpected happens.

How it works

How our smart contract development works

Careful phases with clear sign-offs, and a progress update every week.

  1. Step 01

    Review

    Use case, risks and the simplest workable design agreed with you.

  2. Step 02

    Build

    Contracts written and tested function by function.

  3. Step 03

    Testnet and audit

    Deployed to a test network, then independently audited where value is at stake.

  4. Step 04

    Launch

    Mainnet deployment, key handover to your multi-signature wallet and monitoring.

Why Griffon

Why Griffon for smart contract development services

We start by asking whether you need a blockchain at all. When you do, we keep the contract as simple as the job allows. Every decision about roles, keys and upgrades is written down and agreed with you before deployment.

We also build the website, app and dashboard around the contract, so the whole product is designed together.

Part of our Blockchain development ↗

2 hours

our usual reply to a new inquiry, one business day at most

Weekly

progress updates, plus a monthly report with the data and the work done

One team

strategy, design, development and marketing under one roof

You own it

the design, code and accounts are yours once the work is paid in full

FAQ

Questions about smart contract development services, answered

What do smart contract development services include?

A use case review, contract design, development in Solidity, testing, test network deployment, audit preparation, mainnet launch and key setup.

Do you work as an Ethereum smart contract developer?

Yes. We build for Ethereum and other EVM networks, choosing the network based on your users, fees and requirements. Networks such as Base, Arbitrum and Polygon offer lower fees, while Ethereum itself offers the widest support.

Do we need an audit?

For any contract that will hold meaningful value, yes. We prepare the contract for an independent auditor and fix what they find before launch.

Can a smart contract be changed after launch?

Only if it was designed to be upgradeable. We explain the trade-offs and protect any upgrade path with multi-signature approval.

Who controls the contract?

You do. Admin keys go to a multi-signature wallet controlled by your team.

How much do smart contract development services cost?

It depends on the contract’s complexity and the testing needed. Audits by independent firms are priced separately by the auditor.

Contact

Get a free contract review

A 30-minute call. No deck, no pressure. Bring the site, the numbers and the goal, and leave with a plan and a price.

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