Web3 infrastructure that survives production
We build the hard parts of a Web3 product: on-chain smart contracts, the wallet SDK your app signs transactions with, the indexer that turns chain events into a queryable database, and the Rust backend that runs mining or orchestration at scale. The result is a system that handles real keys, real money, and real load without losing transactions or double-spending.
The engineering, in plain terms.
Contracts built for safety
We ship token, NFT, domain-registry and marketplace contracts with deterministic addressing and replay protection, so the same logical wallet always resolves to the same address and no transaction can be quietly re-executed.
Keys that never leak
Wallet SDKs use ed25519 signing with HD key derivation and passcode-encrypted cold storage (Argon2id + AES-GCM), and a type-state design that makes signing a transaction while offline a compile-time error rather than a runtime accident.
One codebase, native and browser
The SDK is written once in Rust and compiled to both a native binary and WebAssembly, so the same audited signing logic runs identically on a server, a desktop wallet, and in the browser.
An indexer you can trust
We poll the chain and write events into PostgreSQL with deduplication and HMAC-signed webhooks with retry backoff, so downstream systems get every event exactly once even when nodes lag or briefly disappear.
From kickoff to launch.
- 1
Chain & threat scoping
We map your target chain, contract surface, key-custody model and failure cases before writing code, so the security boundaries are decided up front rather than patched later.
- 2
Contracts first, addressing locked
We implement and deploy the contract suite with deterministic addressing and replay protection, then verify behaviour on a live testnet.
- 3
SDK & indexer in parallel
We build the signing SDK and the on-chain indexer together so wallet actions and the queryable event history stay in lockstep from day one.
- 4
Hardening, observability, launch
We add RPC failover, rate limiting and full tracing, then ship to production on autoscaling infrastructure with monitoring in place.
Deliverables, and when it fits.
Deliverables
- Deployed smart-contract suite (tokens, NFTs, registry/marketplace as scoped) with deterministic addressing
- A multi-platform wallet SDK compiled to native and WebAssembly from one Rust codebase
- On-chain indexer writing deduplicated events to PostgreSQL with signed webhook delivery
- Rust backend services (orchestration, RPC failover, rate limiting) running on autoscaling Kubernetes
- OpenTelemetry tracing and metrics wired into your monitoring stack
- Documentation covering key custody, contract addresses, and integration endpoints
A good fit when
- Teams launching a real Web3 product — wallet, tokens, contracts and indexer — not just a token deployment
- Operations that need a Rust backend to orchestrate many wallets or mining nodes reliably at scale
- Founders who need cold-storage-grade key handling and replay protection done correctly the first time
- Projects where chain nodes are unreliable and you need failover and exactly-once event delivery
Shipped a production smart-contract suite and multi-platform wallet SDK (released to v1.0.9) on a TVM-based chain, plus a Rust mining-orchestration backend running ~400 wallets across autoscaling Kubernetes with RPC failover and full tracing.
Want this for your product?
Tell us the goal — we scope it honestly.