We build the blockchain & financial infrastructure the world runs on.
NeptuneWizard is a senior engineering studio shipping blockchain, exchange, fintech and web systems for clients across five continents. Two decades of production-grade infrastructure — from smart contracts to exchange API platforms.
Senior engineering across the full digital-finance stack.
One team that has built it before — blockchain protocols, exchange infrastructure, payment rails and the web platforms on top.
Blockchain Engineering
Smart contracts, L2 integrations, tokenization and on-chain settlement — audited, gas-optimized, mainnet-ready.
Exchange API Management
Unified, monitored access to crypto & brokerage exchange APIs — keys, rate limits, failover and reconciliation, managed.
FinTech & Payments
Payment orchestration, wallets, ledgers and PSD2-grade flows engineered for compliance and scale.
Web3 & dApps
Wallet-native products, DeFi front-ends and indexing pipelines with the UX of mainstream apps.
Software & Web
High-performance web platforms, APIs and dashboards — modern stacks, clean architecture, production hardened.
Architecture & Advisory
Security reviews, system design and technical due diligence from a team that runs mission-critical money systems.
Exchange API Management
A single managed layer in front of every exchange you trade on. We provision, secure and monitor your exchange API connections so your desk, bot or platform never breaks on a rate limit, a key rotation or an outage.
- ✓ Unified connectivity to major crypto & brokerage exchanges
- ✓ Secure key vaulting, rotation & granular permissions
- ✓ Smart rate-limit handling, retries & automatic failover
- ✓ Real-time monitoring, alerting & trade reconciliation
- ✓ Dedicated senior engineers — 20 years in the space
A utility token, fully on-chain.
NEPT powers access to NeptuneWizard services. 100 trillion fixed supply, transparent burns recorded on-chain — live, no fakery.
deploying…
Systems we've shipped for clients worldwide.
A sample of the production infrastructure delivered across five continents.
Crypto Exchange Core
Matching engine, wallet infra and Exchange API layer for a regional digital-asset exchange.
Payments Orchestration
PSD2-grade payment routing and ledger for a regulated EU fintech platform.
DeFi Protocol
Audited smart contracts and indexing pipeline for a US-based DeFi protocol team.
HFT Connectivity
Low-latency exchange connectivity and order-management for a quant trading desk.
Mobile-Money Wallet
Wallet and on/off-ramp rails bridging mobile money and crypto for an African startup.
Tokenization Platform
End-to-end asset tokenization platform with on-chain issuance and a web dashboard.
One studio. Clients on five continents.
From Lisbon we deliver to teams across the Americas, Europe, Asia and Africa — async, senior and timezone-aware.
Exchanges, fintechs & Web3 startups
Banks, PSPs & regulated platforms
Trading desks & protocol teams
Exchange infra & high-frequency systems
Payments, wallets & mobile-money rails
Remote-first, 24/5 engineering coverage
A senior process, not a ticket queue.
Discovery
We map your architecture, risks and goals with the engineers who'll do the work.
Design
A pragmatic blueprint — security, scale and cost weighed before a line of code.
Build
Production-grade delivery in tight iterations, with monitoring baked in.
Operate
We keep it running — observability, on-call and continuous hardening.
Ready to ship serious infrastructure?
Tell us what you're building. A senior engineer — not a sales rep — will get back to you.