The Web3 ecosystem is full of code that compiles but burns user funds. NKKTech ships smart contracts and DApps with the engineering discipline of fintech: threat modeling before any line of Solidity, comprehensive test coverage, third-party audits where stakes warrant, and ongoing monitoring. Solidity (EVM), Move (Sui/Aptos), Rust (Solana/Near). Recognized as Top Web3 Development Vietnam by Clutch 2026.
Production-grade Web3, security-first. Six capabilities every engagement includes.
EVM-compatible chains (Ethereum, Polygon, Arbitrum, Base), Solana, Sui, Aptos, Near. Pick chains by user fees, throughput, ecosystem fit.
Pre-build threat model identifying attack surface (reentrancy, front-running, oracle manipulation, governance attacks). Coordinated with external auditors (Trail of Bits, OpenZeppelin, Halborn).
React + Wagmi + Viem (EVM) or @solana/web3.js (Solana). Wallet integrations (MetaMask, WalletConnect, Phantom, Trust Wallet). Account abstraction support where applicable.
The Graph subgraphs, Goldsky, or custom indexers. On-chain → off-chain data pipelines, analytics dashboards, search-ready APIs.
MPC wallet integration (Fireblocks, Privy, Web3Auth), hardware-wallet support, multi-sig (Gnosis Safe) for treasury operations.
Tenderly alerts, Forta detection bots, on-chain dashboard (Dune, Footprint, custom). Incident-response runbooks. Treasury monitoring.
1–3 weeks. Identify attack surface, design contracts and access controls, document trust model.
4–8 weeks. Implement contracts and frontend, internal review by senior engineers, comprehensive test coverage.
2–6 weeks. External audit (Trail of Bits, OpenZeppelin, Halborn, etc.), remediation, public report.
1–2 weeks. Mainnet deployment, monitoring stack, incident-response runbook, on-chain ops handoff.
AMMs, lending markets, yield aggregators, derivatives. Heavy on threat modeling and formal verification. External audit non-negotiable.
ERC-721 / ERC-1155 / SPL token standards, royalty enforcement, dynamic NFTs, marketplace contracts, lazy minting.
Gnosis Safe + Snapshot, custom governance contracts, treasury tooling, on-chain voting with timelock.
Real-world asset tokenization with regulatory wrappers, KYC-gated transfers, compliance-aware contracts.
Account abstraction (ERC-4337), social recovery, identity attestations (EAS), on-chain authentication for traditional apps.
Wormhole + LayerZero + Axelar integration. We approach bridges with deep caution — the most common multi-million-dollar exploit category.
We build with security-first practices but always recommend an independent external audit before mainnet. We coordinate with audit firms (Trail of Bits, OpenZeppelin, Halborn, Code4rena contests, etc.) and remediate audit findings as part of the engagement. Audit cost is separate (USD 30K–250K depending on scope) and paid directly to the auditor.
Depends on use case. High-volume consumer (NFT marketplace, gaming): Polygon, Base, Solana. High-value DeFi: Ethereum mainnet (or L2s like Arbitrum / Optimism) for security; Solana for higher throughput needs. Move ecosystem (Sui, Aptos): emerging, good for novel programmable-resources designs. We give honest tradeoffs, no chain loyalty.
Honest answer: it's significant and evolving. We're not a law firm. We connect clients with crypto-experienced counsel in their jurisdiction (US, EU, UK, Singapore, UAE) and design contracts with regulatory wrappers (transfer restrictions, KYC gates, compliance hooks) when the use case warrants. We will not build for use cases that are obviously regulatory-non-compliant (anonymous mixers, unregistered security offerings to US persons).
Smart contract + DApp engagement: typically USD 60K–250K depending on scope. External audit: USD 30K–250K (separate, direct to auditor). Ongoing monitoring + on-chain ops: USD 3K–10K/month. We give fixed-fee build quotes after a 1-week scoping engagement.
Yes, that's actually our most common engagement type. Mid-market companies adding tokenized loyalty, NFT collectibles, on-chain audit trails, or wallet-based authentication. We integrate with existing fiat + KYC infrastructure rather than forcing a full Web3 rebuild.
NKKTech delivered our LLM document processing pipeline on time and exactly on budget. The tech lead was available on Slack daily. First offshore team that actually worked the way we expected.
Tony's team understood our legacy PHP system faster than our internal team. Zero downtime migration, exactly as promised. The bilingual PM made communication seamless.
We went from 15 hours/week of manual prospecting to fully automated lead gen in 8 weeks. ROI in 60 days as Tony promised.
NKKTech delivered our LLM document processing pipeline on time and exactly on budget. The tech lead was available on Slack daily. First offshore team that actually worked the way we expected.
Last updated: · Reviewed quarterly for accuracy.
30-minute free discovery call with a senior NKKTech engineer (not a sales rep). We'll review your requirements, scope an engagement, and tell you honestly whether we're the right fit.
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