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Blockchain · AI · Software Engineering

Engineering the systems that move value on-chain

We are a senior engineering partner for exchanges, funds and protocols — designing, building and securing the smart contracts, trading systems and AI infrastructure that institutional capital depends on.

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Trusted by trading firms, exchanges and DeFi protocols across seven networks.

On-chain volume secured
€500M+ On-chain volume secured Across audited protocols and exchange infrastructure
Protocols shipped
40+ Protocols shipped From smart contracts to full trading systems
Infrastructure uptime
99.99% Infrastructure uptime Measured across production trading workloads
Chains in production
7 Chains in production Ethereum, Solana, L2s and app-chains
What we build

End-to-end engineering for on-chain businesses

From a single audited contract to a complete exchange, we deliver the full stack — designed, built and operated by engineers who have shipped in production.

Blockchain

Blockchain Development

Layer-1s, app-chains, and the protocol engineering behind them.

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Blockchain

Smart Contract Development

Audited, gas-optimised contracts where mistakes are permanent.

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DeFi

DeFi Development

AMMs, lending, perps, and the economics that keep them solvent.

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Trading

Crypto Exchange Development

Matching engines, custody, and settlement for centralised venues.

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AI

AI Agent Development

Autonomous agents that are reliable, evaluated, and cost-controlled.

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Who we serve

Built for institutional operators

We embed with teams where reliability, latency and security are non-negotiable — and where the cost of getting it wrong is measured in eight figures.

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Crypto Exchanges Matching engines, custody, and settlement built to survive volume spikes. Hedge Funds Execution, risk, and on-chain infrastructure for digital-asset funds. Trading Firms Low-latency systems for market makers and proprietary desks. DeFi Protocols Audited smart contracts and the off-chain systems that keep them running. Fintech Compliant rails connecting traditional finance to on-chain settlement. SaaS Scalable products engineered to grow from launch to enterprise. Enterprise Blockchain and modernisation programmes with enterprise-grade governance. AI Startups Agentic systems and ML infrastructure built for production, not demos. VC-backed Senior engineering velocity for teams with a board and a runway.
Deep on-chain expertise

Multi-chain, by default

We ship to production on the networks that matter, and the engineering disciplines that keep value safe once it is there.

Ethereum EVM • Solidity • L1 settlement
Solana Rust • Anchor • high-throughput
Base OP Stack • L2 • consumer-scale
Arbitrum Nitro • L2 • DeFi liquidity
Optimism OP Stack • Superchain
Polygon PoS & zkEVM • payments
BNB Chain EVM • exchange ecosystems
Smart-contract architecture & formal-spec review
Gas-optimised Solidity and Rust/Anchor programs
On-chain/off-chain settlement & oracle design
MEV-aware execution and private order flow
High-frequency matching engines & market-making
Wallet, custody and key-management integration
Subgraph indexing, analytics and data pipelines
Bridge, L2 and cross-chain messaging integration
How we deliver

A disciplined path from idea to production

No surprises, no vapourware. Every engagement follows the same rigorous, transparent process — instrumented and reviewed at each stage.

  1. 01

    Discovery & architecture

    We map the problem, threat model, and economic design before a line of code is written, producing a reference architecture and delivery plan.

  2. 02

    Specification & design

    Protocol mechanics, data models and interfaces are specified in detail and reviewed with your team, removing ambiguity ahead of build.

  3. 03

    Implementation

    Senior engineers build in tight increments with continuous integration, comprehensive test coverage and weekly demos.

  4. 04

    Audit & hardening

    Internal review, fuzzing, invariant testing and coordination with third-party auditors precede any value moving on-chain.

  5. 05

    Launch & operate

    We ship to production with monitoring, incident runbooks and on-call support, then iterate against real usage and metrics.

Security first

Security is the product, not a phase

On-chain, mistakes are immutable and exploits are permanent. We treat security as a first-class engineering concern from the first whiteboard session — not a box ticked before launch.

Zero funds lost to vulnerabilities across protocols we have shipped and operate.

Defense-in-depth reviews

Every contract passes internal review, automated analysis and fuzzing before external audit — no exceptions.

Invariant & property tests

We encode protocol invariants as executable properties, catching economic and re-entrancy edge cases the compiler never will.

Key & custody discipline

Hardware-backed signing, multisig governance and least-privilege deployment pipelines protect upgrade and treasury keys.

Monitoring & response

Real-time on-chain monitoring, circuit breakers and rehearsed incident runbooks keep production systems observable and recoverable.

Selected work

Outcomes, measured in production

A look at systems we have designed and shipped — and the results they delivered.

All case studies
Crypto Exchanges

Rebuilding a Spot & Derivatives Matching Engine for 1.2M Trades a Day

A Tier-2 centralised exchange was capped by a legacy matching core that buckled under listing events. We rebuilt the order-execution path in Rust and took p99 match latency from 210ms to 38ms while scaling to 1.2M trades a day.

p99 match latency
38ms
p99 match latency
Daily trade throughput
1.2M tx/day
Daily trade throughput
Cold-start recovery
4s
Cold-start recovery
Read the case study
Hedge Funds

Settling €480M On-Chain for a Regulated Tokenised Fund

A regulated asset manager needed to issue and settle a tokenised money-market fund on Ethereum with bank-grade controls. We designed the contract suite and operations tooling that has since settled €480M with zero reconciliation breaks.

Value settled on-chain
€480M
Value settled on-chain
Subscriptions & redemptions
9,200+
Subscriptions & redemptions
Reconciliation breaks
0
Reconciliation breaks
Read the case study
DeFi Protocols

A Concentrated-Liquidity DEX Doing $3.4B Cumulative Volume

Volt Protocol wanted a capital-efficient AMM on Solana that could compete with order-book venues on price. We built a concentrated-liquidity DEX and routing layer that has cleared $3.4B in cumulative volume with sub-second swaps.

Cumulative swap volume
$3.4B
Cumulative swap volume
Median swap finality
<1s
Median swap finality
Price impact on $100k swap
<6 bps
Price impact on $100k swap
Read the case study
In their words

What partners say about working with us

“They rebuilt the most critical part of our exchange under live load, and somehow made it look routine. We never lost a trading session thanks to the shadow cut-over, and p99 match latency went from over 200 milliseconds to under 40. I have not worked with a more disciplined engineering team.”

Elena Sørensen
Chief Technology Officer, Meridian Exchange

“We were issuing a regulated tokenised fund, and a single reconciliation break would have sunk it. The contract suite they delivered passed audit with zero critical findings, and the operations tooling is something our administrator actually trusts. Hundreds of millions of euros settled on-chain since, and not one break.”

Marcus Reinholt
Managing Partner, Lattice Capital

“Porting concentrated liquidity to Solana is hard, and most teams badly underestimate it. These guys knew the account model and the compute budget cold. They shipped a program with no high-severity audit findings and a router that quotes against centralised venues, and we have since cleared billions in volume on top of it.”

Priya Anand
Founder, Volt Protocol
Questions

Frequently asked

The questions teams ask us most often before an engagement. Don't see yours? Reach out — we answer directly.

We focus on production blockchain, DeFi, trading, and AI systems for institutional and venture-backed clients: matching engines and exchange infrastructure, smart-contract suites for tokenisation and DeFi, decentralised exchanges, trading bots and execution agents, and the APIs and platforms around them. We are most useful on engagements where correctness, security, and performance genuinely matter — not on quick token launches or speculative meme projects.

Both. Some clients engage us to deliver a defined system end to end, say a settlement contract suite or a matching-engine rebuild, with a written architecture and acceptance criteria. Others embed our engineers alongside their own team for a quarter or more to build capability and then hand it over. We recommend whichever model fits the problem, and we spell out the choice in the proposal.

On-chain we work primarily with Ethereum and the EVM ecosystem (Solidity, Foundry) and with Solana (Rust, Anchor). For high-performance off-chain systems like matching engines, routers and market-data, we favour Rust, with Python for quantitative and AI workloads. We try to stay pragmatic about the stack. The right tool for a settlement contract is rarely the right tool for a low-latency execution path, so we pick per problem.

Yes. We routinely sign mutual NDAs before discovery and are comfortable working under enterprise master-services agreements, with the usual provisions on IP assignment, confidentiality, and data handling. For regulated clients we can accommodate additional controls around access, key management, and audit trails.

Every engagement begins with a focused discovery phase. We map the assets at stake, the regulatory and operational constraints, the systems we have to interoperate with, and the failure modes you most fear. The output is a written architecture and threat model you sign off on before any substantive build begins. We will not quote a firm number off a one-paragraph brief. Discovery is where the requirements nobody wrote down tend to surface.

Wherever we replace a system that is already in production, we run the new one in shadow mode first. A new matching engine processes real order flow alongside the incumbent and reconciles every fill to byte-for-byte equality before it routes any live volume. Cut-over after that is gradual, reversible and feature-flagged, done pair by pair or venue by venue, with a fast path back to the old system if anything looks wrong. Done well, go-live is a non-event.

A system your team can run, watch and recover without us. That means runbooks, dashboards covering the latency and reconciliation metrics that matter, alerting, an incident-response process, and full source with documentation. We would rather over-invest in observability and handover than leave you dependent on us to keep the thing running.

You get a dedicated point of contact, a shared backlog, and a regular written and live cadence — typically weekly demos against the agreed acceptance criteria plus async updates. Architecture decisions are documented as they are made, so the rationale is available to your team, your auditors, and your regulators without anyone having to reconstruct it later.
Start the conversation

Let's build something that lasts

Tell us what you're building. A senior engineer — not a sales rep — will review your enquiry and respond within one business day with an honest, technical first take.

  • Senior engineers only You work directly with the people writing the code.
  • Fixed-scope or embedded Project teams or dedicated squads, structured around your needs.
  • NDA-friendly We routinely operate under NDA for sensitive infrastructure.

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Ready to ship something serious?

Whether you have a fully-specced protocol or a one-line idea, we'll help you scope it, build it and secure it — properly.

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