Blockchain Development
The protocol layer of crypto - audited contracts, custom chains, mainnet-ready.
We build the protocol layer of crypto businesses: Solidity, Rust (Solana, Substrate), and Move (Aptos, Sui) smart contracts; custom Layer-1 chains and Layer-2 rollups; bridges and cross-chain messaging. Every contract ships with comprehensive test coverage, gas optimization, formal invariants where they matter, and an internal audit pass before any third-party review. We have shipped contracts that hold real assets on mainnet - the discipline is the same whether the protocol is at $50K TVL or $500M.
What we deliver in this practice.
Smart contract development
Solidity for EVM chains, Rust for Solana and Substrate, Move for Aptos and Sui. We cover the full token standard surface - ERC-20, ERC-721, ERC-1155, ERC-4626 vaults - alongside vesting contracts, governance, multi-sigs, and DAO frameworks. Every contract is test-first with Foundry or Hardhat, branch-coverage above 95% on anything holding value.
Smart contract security audits
Manual review combined with static analysis (Slither, Mythril), symbolic execution, and property-based fuzzing (Echidna, Foundry invariant tests). We deliver a written report with severity classifications, proof-of-concept exploits for every finding, and remediation guidance. We can also liaise with third-party auditors like Trail of Bits, OpenZeppelin, or ConsenSys Diligence as a pre-audit step.
Layer-2 rollup deployment
We deploy and operate L2s on Arbitrum Orbit, OP Stack, zkSync Hyperchains, Polygon CDK, and Base. This covers sequencer setup, bridge configuration, gas token customization, validator/prover infrastructure, and the indexing layer that makes the chain usable. Whether you need a public L2 or an app-specific rollup, we know the tradeoffs.
Custom blockchain development
App-chains and sidechains built on Cosmos SDK or Substrate when an L2 is not the right fit. We design consensus mechanisms, custom modules, token economics, and validator sets. Use cases include gaming chains, RWA tokenization platforms, and regulated permissioned networks where on-chain primitives need to match jurisdictional requirements.
Cross-chain bridges & messaging
LayerZero, Wormhole, Axelar, Chainlink CCIP, and custom relayer-based bridges for moving tokens, NFTs, and arbitrary messages across chains. We design with security-first economics - rate limits, multi-sig admin keys, pause mechanisms - because bridges are the highest-value target in crypto and the historical failure mode is catastrophic.
Gas optimization & upgradeability
Storage packing, assembly-level optimization, and benchmark-driven refactoring to cut gas costs by 20-60% on hot paths. For upgradeability, we implement transparent proxies, UUPS, or EIP-2535 diamonds depending on your governance model. Every upgrade path is documented with storage layout diffs to prevent the silent corruption that has bricked production contracts in the wild.
This service is a good fit when…
You are launching a token, DeFi protocol, or NFT collection and need contracts that will survive both adversaries and the long tail of edge cases real users find.
You have working contracts but need a pre-audit pass to catch issues before the auditor charges you to find them.
You are deploying an app-specific rollup or L2 and need engineers who have set up sequencers, bridges, and infra rather than just writing application contracts.
You need a cross-chain bridge or messaging integration and want it designed with the security economics that prevent eight-figure exploits.
EVM-first. Multi-chain where the math earns it.
Four phases. No discovery deck purgatory.
Spec
We document the threat model, invariants, access control matrix, and economic assumptions before any code is written. Stakeholders sign off on the spec so what gets built matches what was agreed. This phase prevents the classic crypto failure mode of contracts that work as coded but not as intended.
Build
Test-first development with branch coverage above 95% on critical paths and invariant tests on every state-changing function. Gas benchmarks are tracked per commit so optimizations are measurable and regressions are caught early. Code is reviewed in small PRs against the spec.
Audit
Internal audit pass with static analysis, fuzzing, and manual review against the threat model. We then prepare the codebase for external audit - documentation, deployment scripts, test coverage reports - and act as the engineering liaison through the audit cycle, turning auditor findings into PRs with the same discipline as feature work.
Deploy
Mainnet deployment with multi-sig admin keys, monitoring on critical state variables, and incident runbooks for the realistic failure scenarios. Handoff includes operational playbooks for parameter updates, pausing, upgrades, and key rotation - everything your ops team needs to run the protocol without us in the loop.