QED - Build / Bridge / Scale

What we build

We help teams turn hard blockchain ideas into reliable products without hiding the tradeoffs.

EVM & blockchain tools

We build EVM apps, smart contracts, wallet flows, NFT and token systems, backend services, and bridge tooling that connects EVM chains with non-EVM systems, apps, and data stacks.

Product engineering

We take rough product ideas, protocol constraints, and user needs, then shape them into shipped web and mobile tools with clean UX and maintainable code.

Embedded teams

We plug into your team when you need senior builders who can move through product, frontend, backend, smart contracts, infrastructure, and QA without a long ramp.

Interfaces & design systems

We make complex blockchain workflows easier to use with shared components, clear states, and design systems that speed up delivery without hiding complexity.

How we work with you

We can act as your embedded product team, a focused build squad, or a technical partner for the hard architecture calls.

Augment

We join your existing team with senior engineering, product, QA, and infrastructure support where the roadmap needs momentum.

Selected work

We like product work with hard technical edges: blockchain infrastructure, EVM apps, bridge tooling, AI services, and the UX around them.

EVM infrastructure at scale

To support user-generated avatar collections at The Sandbox, we helped make smart-contract deployment faster, safer, and easier to operate.

Sign in across web, mobile, and browser-extension wallets

Create customizable wallet and minting flows

Ship faster with broad framework and Ethereum library support

eLearning

A platform aiming to help women speak English fluently and confidently.

Live conference and video archive web app

Payment gateway integration

Platform website

EV charging mobile app

A mobile app for EV charger management, monitoring, and day-to-day operations.

Built for Android and iOS

Track power usage and support smart load balancing

Start or stop charging remotely

AI service platform

A real-time, real-world AI platform designed to:

Pull real-time data into AI workflows and match it with user prompts

Integrate cleanly with third-party systems

Use a fair pay-per-result model

We trusted QED with the development of our LEKTRI.CO cutting-edge web app for EV charging. It was designed with our users in mind, and the feedback has been overwhelmingly positive. Our users have praised the app's intuitive interface, reliable performance, and innovative features, which have made EV charging more accessible and convenient.

Over time, we expanded our collaboration with QED and they now manage our entire Civitronic infrastructure. They have been an invaluable partner for Civitronic and we look forward to continuing our collaboration.

Oliver

Director @ Lektriko

When we first partnered with QED, we started with a small, dedicated team of four people. Their professionalism, expertise, and commitment quickly became apparent, and our collaboration has since grown exponentially.

We are incredibly pleased with the results and look forward to continuing this successful partnership. QED has become an integral part of our operations, and their impact on our growth and success has been substantial.

Seb

COO @ The Sandbox

Working with QED to build HeyLady from the ground up has been the best decision we could make. They've shown professionalism, understood our needs deeply, and their dedication, expertise, and commitment to quality were crucial to launching such a successful project. Vlad, Marius and Ioana’s practical advice and approach in navigating startup challenges were very helpful along the way.

Shah

CEO @ HeyLady!

We trusted QED with the development of our LEKTRI.CO cutting-edge web app for EV charging. It was designed with our users in mind, and the feedback has been overwhelmingly positive. Our users have praised the app's intuitive interface, reliable performance, and innovative features, which have made EV charging more accessible and convenient.

Over time, we expanded our collaboration with QED and they now manage our entire Civitronic infrastructure. They have been an invaluable partner for Civitronic and we look forward to continuing our collaboration.

Oliver

Director @ Lektriko

When we first partnered with QED, we started with a small, dedicated team of four people. Their professionalism, expertise, and commitment quickly became apparent, and our collaboration has since grown exponentially.

We are incredibly pleased with the results and look forward to continuing this successful partnership. QED has become an integral part of our operations, and their impact on our growth and success has been substantial.

Seb

COO @ The Sandbox

Working with QED to build HeyLady from the ground up has been the best decision we could make. They've shown professionalism, understood our needs deeply, and their dedication, expertise, and commitment to quality were crucial to launching such a successful project. Vlad, Marius and Ioana’s practical advice and approach in navigating startup challenges were very helpful along the way.

Shah

CEO @ HeyLady!

We trusted QED with the development of our LEKTRI.CO cutting-edge web app for EV charging. It was designed with our users in mind, and the feedback has been overwhelmingly positive. Our users have praised the app's intuitive interface, reliable performance, and innovative features, which have made EV charging more accessible and convenient.

Over time, we expanded our collaboration with QED and they now manage our entire Civitronic infrastructure. They have been an invaluable partner for Civitronic and we look forward to continuing our collaboration.

Oliver

Director @ Lektriko

Team

QED started in 2019 as five pragmatic developers who liked hard product problems. Today we are a 20+ person team with deep experience across web3, EVM products, infrastructure, and product delivery.

We scale engineering capacity for teams building serious tools. We are comfortable with ambiguity, honest about risk, and careful with quality, performance, and maintainability.

Work with QED when you need builders who can explain the tradeoffs and still ship.

Team

We are engineers, product people, open source contributors, researchers at heart, and the kind of nerds who enjoy the hard parts.

Time out

Collaboration is how we do our best work. Here is what the team gets up to when laptops are closed.

Culture

Web3 Meetup

We host web3 meetups in Timisoara to share what we learn, make space for practical blockchain conversations, and help local builders meet each other.

Notes and case studies

Tell us what you're building

If you need help with EVM products, bridges, blockchain tooling, or a technically heavy product roadmap, we'd like to hear where you are and what is hard right now.

Union Square no. 13, office 11-12, Timisoara, Romania.

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