Most blockchain projects never reach mainnet.
They demo well, raise a round, and stall before production. We've taken blockchain products from concept to live production across more than a decade of delivery — and the work below is representative of the depth, not the breadth, of what we've shipped. The named anchors include multi-chain crypto wallets, smart contracts, a fully operational casino metaverse and the multi-chain wallet for the ICICB-managed Atari blockchain ecosystem; six metaverse environments and the in-product NFT marketplace for Crypto Blockchain Industries (CBI), publicly listed on Euronext Growth Paris; the ICICB Private Chain (a private EVM with 8–16 nodes and a public-facing block explorer); plus blockchain payment infrastructure for Clust and Bitcoin transaction and custodian systems for Microvest. We don't ship demos. We ship systems that hold real users and real transactions.
The patterns we see kill projects before they ship.
“Your demo runs in testnet. Investors want to see it on mainnet.”
Going from a Hardhat fork to a live mainnet deployment is where most teams stall — gas economics, audit prep, mempool race conditions, deterministic deployment pipelines. None of that shows up in a hackathon.
“Your smart contract passed the audit. It still got drained in week three.”
Audits catch known patterns. They don't catch protocol-level economic attacks, oracle manipulation, or composability hazards introduced when you integrate with the next protocol downstream.
“Your metaverse loads in 60 seconds. Users leave at 5.”
3D performance and blockchain integration rarely fail in isolation — they fail at the seam where wallet calls block render threads, asset streaming chokes the gas estimator, and your retention curve cliffs at first connect.
How we engage, scope, and ship.
Architecture Review
Map the chain, contract, and infrastructure choices against the actual product behaviour — not the whitepaper version.
Production-First Build
Engineer assuming mainnet conditions from week one. Mocks are temporary scaffolding, not deliverables.
Audit & Hardening
Pre-audit hardening pass, third-party audit prep, post-deployment monitoring. We don't mark contracts production-ready until external audit clears.
Operate
Production support, incident response, and upgrade pipelines for live contracts. SRE retainers available for the cloud side.
The full stack for this lane — engineered to live in production.
Smart Contracts & Token Engineering
- EVM contract development (Solidity, Vyper)
- Token standards: ERC-20, ERC-721, ERC-1155, ERC-4626
- Tokenomics design with vesting, staking, and governance
- Upgrade-safe proxy patterns and storage layouts
- Audit prep, hardening, and post-deploy monitoring
Wallets, Marketplaces & DeFi
- Multi-chain crypto wallets (custodial and non-custodial)
- NFT marketplaces with royalty and minting infrastructure
- On-chain payment gateways replacing legacy processors
- DeFi primitives: AMM, lending, vaults, derivatives
- Cross-chain bridges with backend orchestration
Private Chains & Infrastructure
- Private chain architecture (private EVM, Substrate, custom L1)
- Validator and node operations on AWS / GCP
- Indexer infrastructure (The Graph, custom Rust indexers)
- Block explorers and on-chain analytics
- High-availability RPC layers
Metaverse & 3D Web3
- Unity and Unreal Engine production builds
- Blockchain-integrated multiplayer game systems
- Embedded NFT marketplaces inside 3D environments
- AI-driven autonomous NPC behavioural systems
- Wallet integration through wagering through settlement
Production blockchain shipped across three named ecosystems — anchors of a broader portfolio.
The named work below is a sample of a wider portfolio. The engagements we cite by name are the ones we are positioned to discuss publicly; many additional builds sit in confidence.
ICICB-managed Atari blockchain ecosystem. Atari Token, multi-chain Atari Token Wallet (ATRI, BTC, ETH, BNB, USDT, LTC), Atari Portal, the fully operational Atari Casino Metaverse, backend infrastructure, smart contracts, and exchange integrations.
ICICB direct. ICICB Wallet, ICICB Portal, and the ICICB Private Chain — a private EVM running 8–16 nodes with a public-facing block explorer.
Crypto Blockchain Industries (CBI), publicly listed on Euronext Growth Paris. Multi-year engagement covering MetaCoaster, the in-product NFT marketplace inside MetaCoaster (292,000+ assets minted on Polygon, 3,284 unique holders surfaced on OpenSea), and six metaverse environments — Alphaverse (the hub metaverse with its own embedded marketplace), Horyou, Qtopia, Night League, Rave Age, and Artech.
Plus full tokenomics — smart contracts, wallet, and NFT marketplace — for a regulated digital currency platform, and supply-chain digital transformation for an enterprise client.
- Atari Token Wallet — multi-chain crypto wallet supporting ATRI, BTC, ETH, BNB, USDT, and LTC, with full backend, smart contracts, and exchange integrations.
- Atari Casino Metaverse — 3D city with live multiplayer casino, embedded NFT marketplace, and end-to-end wallet integration from wagering through settlement.
- ICICB Private Chain — private EVM, 8–16 nodes, public-facing block explorer, validator operations on AWS and GCP.
- MetaCoaster NFT marketplace — in-product marketplace inside the MetaCoaster theme park sim with autonomous NPC behavioural systems and 75+ engineered rides; 292,000+ assets minted on Polygon, 3,284 unique holders surfaced on OpenSea.
- Six metaverse environments for CBI: Alphaverse (hub), Horyou, Qtopia, Night League, Rave Age, Artech — Alphaverse with its own embedded NFT marketplace alongside MetaCoaster's.
- Full tokenomics — smart contracts, wallet, and NFT marketplace — for a regulated digital currency platform.
- Clust blockchain payment gateway — smart-contract integration, wallet authentication, and on-chain settlement inside a SaaS platform.
- Microvest BTC infrastructure — Bitcoin transaction layer, custodian management, and on-chain monitoring for an AI-driven investment platform.
Three ways to bring AlgoCoder into your build.
Project-Based
Defined scope, defined timeline, defined price. Best for clearly scoped builds with known deliverables — wallet builds, marketplace deployments, contract systems.
Dedicated Team
Senior blockchain engineers focused entirely on your product. Best for ongoing platform work, evolving protocols, and multi-quarter roadmaps.
Strategy & Architecture
Senior architect time for chain selection, contract design, tokenomics review, and audit prep — before you build.