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EVM blockchain development from Maastricht, the Netherlands.

Sigmatic B.V. is a blockchain and AI systems company based in Maastricht, the Netherlands. It builds the on-chain and backend systems EVM teams ship to production, then keeps them running after launch.

Smart contracts, DeFi protocol work, staking flows, cross-chain mechanics, and the backend APIs that hold them together. Founder-led and direct, from the first contract to the point where users actually transact.

What we build

Smart contracts, DeFi protocols, and the systems around them.

EVM development is more than deploying a contract. A protocol needs contracts that hold value safely, backend services that index and serve chain data, and interfaces where routing and liquidity behave the way users expect. Sigmatic builds across that whole surface.

The work covers Ethereum, LUKSO, and other EVM networks. Same tooling, same discipline: contracts written to be reviewed and upgraded, backends that stay reliable under load, and a clear line from protocol logic to the moment a transaction settles.

Scope

The surface we cover.

01

Smart contracts

Solidity contracts for tokens, staking, registries, and protocol logic, written to be reviewed, upgraded, and operated in production. Foundry and Hardhat for testing and deployment.

02

DeFi protocol development

Routing, liquidity, and pool mechanics for AMM and staking systems, including Uniswap V3-style infrastructure and the flows that sit on top of it.

03

Backend and API systems

Node.js, Python, and Go services that index chain state, serve reliable data to interfaces, and hold the moving parts of a protocol together.

04

Cross-chain mechanics

EVM bridge UX, message passing, and the operational edge cases that appear the moment a protocol spans more than one network.

Approach

Builder and operator, in the same shop.

Most teams that write your contracts hand them off and disappear. Sigmatic ships the code and then runs the infrastructure behind it: nodes, RPC access, validators, and the monitoring that keeps a protocol alive under production load. That infrastructure work is a service in its own right.

Engagements run founder-led. One technical owner across contract, backend, and operations, close work on product direction, and no translation loss between the people who design a system and the people who keep it up. The point is technical execution that survives contact with production, not a deck of promises.

Every contract goes through Foundry and Hardhat test suites before it touches mainnet, and the same repository owns the deploy scripts, so what runs in production is the version that was reviewed. When a protocol spans more than one chain, the backend and the bridge UX are treated as part of the contract surface, not an afterthought bolted on later.

Proof

Proof without the client logos.

Some of the most demanding work stays unnamed. Sigmatic has built Uniswap V3 fork infrastructure and cross-chain DeFi systems for clients whose names stay private. What is public still shows the range.

Confidential protocol work

Uniswap V3 fork and cross-chain DeFi work

Protocol-facing DeFi work across routing, liquidity, EVM bridge UX, backend integrations, and operational edge cases.

  • Uniswap V3-style infrastructure.
  • Cross-chain DeFi protocol work.
  • Names intentionally kept private.
  1. 01Stakingverse, a liquid staking product across LUKSO and Ethereum, built and operated by Sigmatic. Read the case study.
  2. 02Universal Trust, an on-chain reputation registry on LUKSO Universal Profiles that placed 2nd at the Synthesis AI Agent Hackathon. Read the case study.
  3. 03Award-winning ETHCC Paris 2022 hackathon work: shipping a working product under a hard deadline.

Where we are

Based in Maastricht, working with EVM teams anywhere.

Sigmatic B.V. is a registered Dutch company in Maastricht, the Netherlands, working with EVM teams across the EU and beyond. The code and the infrastructure travel; the company details stay verifiable. A Maastricht base with a Dutch KvK registration and VAT number means clear contracting for European teams and remote, async collaboration for everyone else.

Company

Sigmatic B.V.

Founder: Jordy

sigmatic.io

Address

Lage Kanaaldijk 1 B01

6212AE Maastricht

Netherlands

Legal

KvK: 92280676

VAT: NL865973805B01

Contact

Building on EVM infra, staking, DeFi, or AI automation? Work with Sigmatic.