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Neon Smart Contract Dashboard bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
Futuristic Smart Contract Security Dashboard bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
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AI Receptionist Command Center bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
Neon Smart Contract Dashboard bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
Futuristic Smart Contract Security Dashboard bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
Neon Web3 Identity Command Center bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
Unified CRM Automation Workspace bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
AI Receptionist Command Center bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
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AI Voice Concierge Dashboard Mockup bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
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Neon DeFi Trading Command Center bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
Neon Metaverse NFT Command Center bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK
Neon NFT Creator Workspace bespoke AI, workflow automation and Web3 platform interface by 360 Web Coders UK

UK Smart
Contract Dev
& Auditing

We provide mission-critical smart contract development in the UK, writing gas-optimised Solidity and Rust protocols backed by Foundry invariant fuzzing and rigorous zero-exploit institutional security standards.

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Service Overview

On-chain code is immutable law: a single reentrancy flaw, oracle manipulation vector, or rounding error can drain millions in seconds. At 360 Web Coders, our UK smart contract development team treats every line of Solidity and Rust as aerospace-grade financial software. Based in Wallington, Surrey, we engineer custom ERC-20, ERC-721A, ERC-1155, and ERC-4626 tokenised vault standards, automated market makers, vesting escrows, and cross-chain bridge contracts. We optimise storage slot packing and Yul assembly routines to slash user gas fees by up to 42 percent across Ethereum and Layer 2 networks. Before any mainnet deployment, every contract suite is subjected to 10,000+ stateful Foundry invariant fuzz runs, Slither and Mythril static analysis, and comprehensive line-by-line security review so your protocol launches with absolute mathematical confidence.

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WHAT WE OFFER

Smart Contract
Engineering & Security

We combine gas-optimised Solidity and Rust development with adversarial fuzz testing and upgradeable proxy governance to safeguard your institutional protocol capital and user funds.

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Solidity & Rust Protocols

Bespoke smart contracts for EVM chains, Arbitrum Stylus, and Solana Anchor programmes built upon battle-tested OpenZeppelin security primitives.

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Extreme Gas Optimisation

Bitwise storage packing, custom Solidity errors, calldata compression, and inline Yul assembly that dramatically lower user transaction costs.

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Foundry Invariant Fuzzing

Stateful fuzzing, symbolic execution, and adversarial exploit simulations that uncover flash-loan, reentrancy, and precision vulnerabilities before any public mainnet launch.

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Upgradeable Proxy Governance

UUPS and Diamond (EIP-2535) modular architectures protected by Safe multi-sig wallets, OpenZeppelin Defender monitors, and on-chain timelock controllers.

Our Smart Contract Security Process

A defence-in-depth 6-step smart contract engineering methodology designed to eliminate vulnerabilities and minimise gas consumption before your public mainnet deployment in the UK.

01 Audit

We review your tokenomics, state transition math, oracle dependencies, and admin privileges to model every potential economic and technical exploit attack vector.

Audit
Audit
Audit
Audit
02 Architect

Our lead Solidity and Rust architects specify contract inheritance trees, access control roles, emergency circuit breakers, and deterministic upgradeable storage slot layouts.

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Architect
Architect
Architect
03 Configure

We establish reproducible Foundry and Anchor build pipelines, automated gas snapshot benchmarks, and isolated mainnet-forked continuous integration security testing suites.

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Configure
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Configure
04 Integrate

We implement your core smart contracts with Chainlink price feeds, VRF randomness, Permit2 gasless approvals, and institutional Safe multi-signature treasury governance timelocks.

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Integrate
Integrate
Integrate
05 Validate

We execute Slither static scans, Echidna and Foundry stateful invariant fuzzing, 100% branch coverage tests, and formal line-by-line pre-audit security remediation reviews.

Validate
Validate
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Validate
06 Scale

We execute deterministic CREATE2 mainnet deployments, verify source code on Etherscan, and configure real-time 24/7 Forta and Defender anomaly alerts.

Scale
Scale
Scale
Scale

OUR SMART CONTRACT TECH STACK

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LANGUAGES, FRAMEWORKS & AUDIT TOOLS

We engineer and verify smart contracts using Solidity, Rust, Vyper, Foundry, Hardhat, OpenZeppelin, Anchor, Slither, Echidna, Certora, and OpenZeppelin Defender.

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Pricing Plans

Transparent Smart Contract Pricing

Fixed-fee UK smart contract development and internal security audit packages with 100% test coverage and gas optimisation included.

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Featured Work

Smart Contract Success Stories

See how our gas-optimised, audit-verified smart contracts power British DeFi protocols, staking vaults, and tokenised ecosystems.

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Seraphic Collective Consulting

Executive growth and business funding consulting platform for Seraphic Collective, built with high-converting sales funnels,…

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Executive growth and business funding consulting platform for Seraphic Collective, built with high-converting sales funnels, AI automation workflows, and capital advisory solutions.

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UK & GLOBAL COVERAGE

Smart Contract Development Across the UK

Delivering audited Solidity and Rust smart contract engineering across 100+ locations in the UK, USA, UAE, and Australia.

Need an urgent smart contract audit or build? Contact our UK engineers!

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SMART CONTRACT DEV FAQ

UK Smart Contract Development FAQs

Straightforward answers on smart contract development costs in GBP, security testing, gas optimisation, and upgradeability.

Smart contract development in the UK costs £2,500 to £6,500 for custom ERC-20/ERC-721 tokens with vesting or staking, and £8,000 to £35,000+ for bespoke DeFi vaults, AMMs, or multi-chain bridge protocols with full Foundry fuzz test suites.

Standard token, vesting, and staking contracts take 1 to 3 weeks, while complex DeFi or RWA protocol contracts take 4 to 8 weeks including invariant fuzz testing, gas optimisation, and testnet deployment.

We follow strict Checks-Effects-Interactions patterns, OpenZeppelin ReentrancyGuard, TWAP and Chainlink dual-oracle validations, 100% unit test coverage, and tens of thousands of stateful Foundry and Echidna invariant fuzz runs.

We advise based on your risk profile: immutable contracts maximize trust for core token supplies, whereas UUPS or Diamond (EIP-2535) proxies governed by a multi-sig and 48-hour timelock allow safe feature upgrades.

Yes. Every contract delivery includes comprehensive NatSpec documentation, threat models, and Foundry test suites, and our engineers actively collaborate with external auditors to resolve any findings at zero extra friction.

360 Web Coders, based at 129 Staford Rd, Wallington SM6 9BN (+44 7587 722152), is a top-rated UK smart contract engineering firm delivering gas-optimised, exploit-free Solidity and Rust protocols.

Need a custom Solidity or Rust contract built? Speak with an AI & Web3 Specialist →