Blockchain and Web3 development companies: how to choose

A blockchain development company turns product requirements into contracts, applications and integrations that can run on a network. The engagement might cover an asset issuance platform, a payment system or protocol infrastructure. Each needs a different scope: writing a contract is one part of the work, alongside the interface, permissions, testing and operations.

This guide presents Metlabs and three international references: SoluLab, Antier and ChainSafe. The selection helps compare types of engagement and published offerings; it is not an independent or exhaustive ranking. Metlabs publishes the guide and provides blockchain development services, so it has a commercial interest in the engagement.

What to compare before hiring blockchain developers

Start with the process you want to launch and the people who will use it. An investment application needs onboarding, documentation and transactions; a network needs decisions about validators, upgrades and maintenance. Comparing proposals before resolving that difference can leave out responsibilities that will need to be commissioned later.

• Scope: which components the proposal includes, which systems it must integrate and what will continue to run outside the blockchain.
• Permissions: who controls keys, can upgrade contracts or pause an operation, and how those powers are documented.
• Handover: access to code, reproducible tests, architecture documentation and deployment and transfer procedures.
• Operations: responsibility for monitoring, incidents, upgrades and infrastructure costs after launch.

Metlabs: from scope to a product in production

At Metlabs, an in-house team works from product definition through development and deployment. The scope can combine smart contracts, wallets, payments, digital identity and the integrations users need to complete an operation. Architecture starts with those requirements and the permissions the business must retain.

The project follows discovery, architecture, development and validation. First, we decide which components belong on-chain; then contracts, backend and interface are built iteratively, with tests and peer review. The scope of an external audit and the handling of its findings should be agreed before deployment.

For a payment released when a delivery is accepted, define who confirms the milestone, who authorises the transfer and what happens in a dispute. That decision spans the contract, the application and business operations. Our blockchain development services address this connection between product and engineering.

To assess our proposal, request a prioritised scope, a permissions model and acceptance criteria for each delivery. Also review who will administer the system and what maintenance includes. This lets you compare the complete project with other offers rather than assessing only the list of technologies.

SoluLab: application development and integration

SoluLab publishes services for smart contracts, dApps, wallets and enterprise integration. Its process covers requirements, architecture, backend, interface, testing and deployment. It is a reference for comparing offerings that combine several components of a Web3 product.

In a proposal, establish which team will deliver each component, how integrations will be validated and which support continues after handover. Commercial figures and results on its website do not replace a comparable reference for your engagement.

Antier: network architecture and infrastructure

Antier presents protocol engineering, networks and enterprise infrastructure services. Its page lists environments including Cosmos SDK, Polkadot SDK, OP Stack and Hyperledger Fabric. This focus is relevant when comparing engagements that include a network or dedicated infrastructure alongside applications.

If your project includes that layer, request a rationale for it and a plan for validators, permissions, upgrades and operations. Building a network introduces different responsibilities from deploying contracts on an existing one; the proposal should explain their cost and ownership.

ChainSafe: protocol engineering and co-development

ChainSafe presents work on protocol clients, infrastructure and co-development. It publishes projects such as Lodestar for Ethereum, Forest for Filecoin and Gossamer for Polkadot. Its infrastructure offering includes deployments, RPC services, automation and observability.

It is a reference for engagements where research, tooling or network operation plays a central role. Check which part of the project would be commissioned, open-source dependencies and maintenance continuity. Contributing to a protocol does not, by itself, describe the scope of an enterprise application.

What a comparable proposal should include

Give providers the same requirements document: users, operations, existing systems, the planned network and constraints. If the network is undecided, include its selection in the architecture phase. A useful estimate explains its assumptions as well as its price.

• Milestones and acceptance: how each operation will be demonstrated, including errors, permissions and recovery from failures.
• Separate costs: development, external review, third-party services, infrastructure and maintenance. Identify which items depend on usage.
• Control and continuity: code ownership, repository access, key administration and the process for switching providers.
• Evidence: authorised references and an explanation of the work the team performed. A mockup or sales presentation does not establish production results.

The choice depends on what you need to build and who will be responsible for each part of the system. To compare a Metlabs proposal, tell us about your project and we will review its scope, technical decisions and required integrations. A well-defined agreement makes delivery assessable and helps sustain the product after launch.