Blockchain Development & Engineering

We work across public EVM chains (Ethereum, Polygon, Arbitrum, Optimism, Avalanche C-Chain), high-throughput L1s like Solana, Cosmos SDK app-chains, Polkadot parachains, Hyperledger Fabric, Hyperledger Besu, Corda, and custom Tendermint-based networks. Consensus coverage includes BFT variants (Tendermint/CometBFT, IBFT 2.0), PoS operational patterns, PoA networks for permissioned consortia, and hybrid setups with external security. Chain and consensus choice follows your latency, finality, privacy, and regulatory constraints - not our default stack.

Validator keys are treated as Tier-0 secrets. We design key ceremonies aligned to your HSM or cloud KMS standards, enforce separation between signing and operational keys, document rotation intervals, and rehearse failover where one region or signer set drops offline. HashiCorp Vault, cloud-native KMS, or hardware modules are integrated per your security policy, with audit logs for every signing operation your compliance team can ingest.

Yes. We routinely deploy Fabric, Besu, and Corda topologies with channel- or private-transaction privacy, RBAC at the network and application layers, and observer nodes for regulators. Networks are scoped with data residency, identity federation, and retention policies documented before genesis - so legal and engineering sign the same architecture.

Six phases: Discovery (requirements, constraints, trust model) → Architecture (topology, consensus, economics) → Development (node software, middleware, tooling with continuous benchmarking) → Validation (independent security review, load and adversarial testing) → Launch (bootstrap, validator onboarding, observability) → Support (monitoring, incidents, upgrades under SLAs). Each phase gates on agreed deliverables before the next begins.

Both. For live networks we start with a read-only assessment: client versions, peer topology, monitoring gaps, and incident history - then scope upgrades, scaling, or bridge integrations without forcing a reboot. Greenfield programmes follow the full phase model from Discovery through handoff.

We maintain upgrade runbooks with client version matrices, dry-run environments, rollback criteria, and communication templates for validators and partners. Coordinated upgrades use maintenance windows aligned to your SLA; emergency patches follow a faster path with pre-approved breaker procedures. Every upgrade is rehearsed on a shadow network where possible.

Greenfield permissioned or app-chain programmes commonly run 12-24 weeks from Discovery to production bootstrap depending on integration complexity and review cycles. A typical core team is a lead protocol or infra engineer, a second engineer for integration and automation, and a DevOps specialist for pipelines and observability. Timelines compress for isolated milestones (e.g., bridge hardening-only) and extend when multi-region HA or heavy legacy integration is in scope.

Yes. Monitoring covers consensus health, peer counts, block production, RPC latency, bridge message queues, and integration consumer lag - with paging rules matched to severity. Incident response includes triage playbooks, stakeholder comms templates, and post-incident reports suitable for risk committees.

The fastest starts include: target chain class (public, permissioned, hybrid), throughput and finality targets, trust model (who runs validators), regulatory or data-residency constraints, existing systems to integrate, and target go-live window. We respond within one business day with a scoped recommendation - no NDA required for an initial conversation.