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Web3j Support

Enterprise-grade support and maintenance for Web3j

Dedicated support from the creators of Web3j

Web3j is a lightweight, highly modular, reactive, type safe Java and Android library for working with smart contracts and integrating with Ethereum blockchains.

This allows you to work with Ethereum blockchains, without the additional overhead of having to write your own integration code for the platform.

With dedicated support from the creators of Web3j you can ensure you have a trusted partner to support your most critical blockchain applications.

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Support from the experts

As the creators and maintainers of Web3j we know the library better than anyone else to ensure we can quickly get to the bottom of any issues you may face.

Tailor Web3j to your needs

Our customers have the opportunity to help define the future of Web3j and contribute to our roadmap.

A multi-channel presence

Whether you want to use email, real-time collaboration tools like Slack, or pick up the phone to speak with our engineers, we’ve got you covered.

A direct line with the engineers

No more raising issues on GitHub, communicate directly with the Web3j engineers via the platform most conducive to your business.

SLA’s to meet the needs of your business

Our engineers will restore any issues quickly, accelerating the path to resolution.

Not just bug fixes, but also hotfixes

Only our support customers benefit from Web3j hotfixes. If you need a fix turned around to a specific version of Web3j we can do that for you.

What people say
about us

"Web3j is critical to any enterprise building on Ethereum, by speeding up development lifecycles and abstracting blockchain complexity under a simple and easy to use API. Web3 Labs have been a professional and trusted partner, and a pleasure to work with."

Joanes Espanol
CTO, Amberdata

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JP Morgan
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Read our Web3j Support Case Studies

Find out how we've helped organisations develop their web3 initiatives with our Web3j support services.



R3 partnered with Web3 Labs to develop a version of the Web3j library that could easily integrate with Corda.



Web3 Labs provides ConsenSys with a suite of enhancements to meet the privacy requirements of its clients.


J.P. Morgan

Web3 Labs helps to address the lack of specific feature support in Quorum, with the web3j library.

The Blockchain Innovator's Handbook

A leader’s guide to understanding, adopting and succeeding with this disruptive technology.


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Find out more

Web3 Innovators Podcast

Hear directly from folk changing the face of finance and other industries with web3 and blockchain technologies.