Blockchain engineering built for production, not demos.
From protocol design to node operations, BitAzure designs and builds blockchain systems that stay reliable under real load: Layer 1 and Layer 2 networks, infrastructure, indexers, explorers and the APIs your products depend on.
- Layer 1 / Layer 2 protocol development
- Node, validator and RPC infrastructure
- Indexers, explorers and data APIs
- EVM, Solana, Bitcoin and Cosmos ecosystems
What is blockchain development?
Blockchain development is the engineering of distributed ledger systems and the software that runs on top of them: consensus and networking layers, execution environments, smart contracts, node infrastructure, indexing pipelines and the APIs and interfaces that make on-chain data usable by products and people.
At BitAzure, blockchain development covers the full stack. We build new networks and app-chains where a custom chain is justified, extend existing ecosystems with Layer 2 and rollup technology, and, most often, engineer the infrastructure and applications that let businesses operate on public or permissioned chains with confidence.
The result is a system with a documented architecture, tested code, observable infrastructure and a team that understands how it behaves when the network is congested, a node falls behind or a dependency changes.
Blockchain development services
Each capability is delivered by engineers who have operated the same components in production, so design decisions reflect operational reality.
Protocol & Network Development
- Layer 1 network design and implementation
- Layer 2 rollups and app-specific chains
- Consensus, networking and execution modules
- Cosmos SDK and Substrate-based chains
- Genesis, upgrade and governance tooling
Node & Validator Infrastructure
- Full, archive and light node deployment
- Validator setup with key management and failover
- Load-balanced RPC clusters with caching
- Snapshotting, pruning and disaster recovery
- Multi-cloud and bare-metal topologies
Data Infrastructure
- Custom indexers and event pipelines
- Block explorers and analytics dashboards
- Subgraphs and GraphQL/REST data APIs
- Real-time WebSocket feeds
- Reorg-safe data models and backfills
Smart Contracts & Programs
- Solidity contracts for EVM networks
- Rust programs for Solana (Anchor)
- Upgradeable and modular architectures
- Gas optimisation and invariant testing
- Audit preparation and remediation
Integration & Middleware
- Wallet and signing service integration
- Oracle and cross-chain messaging integration
- Custody, KYC and payment provider adapters
- Enterprise system connectors (ERP, CRM, data lakes)
- Event-driven off-chain workers and keepers
Operations & Support
- Monitoring, alerting and on-chain anomaly detection
- Runbooks and incident response playbooks
- Protocol upgrade and hard-fork management
- Cost optimisation for RPC and storage
- Ongoing engineering partnership
Reference blockchain platform architecture
A typical BitAzure blockchain platform separates on-chain components, node infrastructure, indexing and application services so each can scale, fail and be upgraded independently.
Hover or focus a component to see its role in the architecture.
- Web App (React / TypeScript): Wallet-native UI with transaction simulation and status tracking.
- Mobile App (React Native): Shares the TypeScript core with the web app.
- API Gateway (REST / GraphQL / WS): Auth, rate limiting, request validation and WebSocket fan-out.
- Domain Services (Node.js / Go): Business logic, transaction orchestration and workflow state.
- Signing Service (HSM / MPC): Isolated signing with policy checks and approval workflows.
- Indexer (Event pipeline): Reorg-aware ingestion of blocks, logs and traces into PostgreSQL / ClickHouse.
- Data Stores (PostgreSQL · Redis): Queryable state, caches and job queues.
- RPC Cluster (Load-balanced nodes): Cached, health-checked JSON-RPC endpoints with fallbacks.
- Blockchain (EVM · Solana · Cosmos): Public or permissioned network with smart contracts / programs.
On-chain
- Smart contracts / programs
- Upgrade & governance
- Access control
Node layer
- RPC clusters
- Validators
- Snapshots & DR
Data layer
- Indexers
- Explorers
- Analytics
Application
- APIs & gateways
- Signing services
- Web & mobile
Where custom blockchain development pays off
App-specific chains
Dedicated throughput and custom fee logic for high-volume applications such as games or exchanges.
Permissioned enterprise ledgers
Shared, tamper-evident records between organisations with identity-based access.
Tokenised assets and settlement
Issuance, transfer restrictions and settlement of digital securities and deposits.
Supply-chain provenance
Anchoring events from IoT and ERP systems to an immutable trail.
Protocol infrastructure
Nodes, indexers and explorers for ecosystems that need reliable public data.
Data availability and rollups
Layer 2 scaling for ecosystems that have outgrown a single chain.
Why teams choose BitAzure for blockchain engineering
Architecture first
Custody, consensus and data models are decided and documented before development begins.
Production experience
Engineers who have run nodes, indexers and contracts under real network conditions.
Ecosystem breadth
EVM, Solana, Bitcoin and Cosmos expertise, so the chain fits the product rather than the reverse.
Security integrated
Threat modelling, static analysis, fuzzing and audit coordination are part of delivery.
Observable systems
Every component ships with metrics, logs, traces and alerts your operators can use.
Ownership and handover
Clients own the code, with documentation and runbooks delivered as standard.
Technologies we use for blockchain development
Solidity
BlockchainEVM smart contracts: tokens, DeFi protocols, governance, vesting.
Rust
BackendMemory-safe, low-latency engines, on-chain programs and tooling.
Go
BackendConcurrent network services, relayers and infrastructure daemons.
Node.js
BackendEvent-driven APIs, gateways and real-time WebSocket services.
TypeScript
FrontendStrict typing across the entire stack, client to contracts tooling.
Cosmos SDK
BlockchainApp-chains, IBC and custom consensus modules.
EVM
BlockchainEthereum, BNB Chain, Polygon, Arbitrum, Optimism, Base, Avalanche.
Solana
BlockchainRust programs with Anchor, SPL tokens and high-throughput dApps.
Bitcoin
BlockchainUTXO wallets, PSBT signing, Lightning integrations.
PostgreSQL
DatabaseTransactional ledgers, ledgers-of-record and analytical workloads.
Redis
DatabaseCaching, sessions, rate limiting, pub/sub and order-book snapshots.
Kubernetes
InfrastructureAutoscaling, rolling deployments and workload isolation.
How we deliver blockchain projects
Every engagement follows a documented, milestone-driven path from discovery to continuous development.
- 01
Discovery & chain selection
Requirements, throughput targets, decentralisation and compliance needs drive the choice of chain or the case for a custom network.
- 02
Architecture & threat model
Component boundaries, custody model, data flows and failure modes are designed and reviewed with your team.
- 03
Contract & infrastructure build
Contracts, nodes, indexers and services are developed in parallel with automated testing from the first sprint.
- 04
Security testing
Static analysis, fuzzing, integration tests on testnets and preparation for independent audit.
- 05
Deployment & monitoring
Infrastructure as code, staged rollouts, dashboards and alerting before mainnet launch.
- 06
Continuous development
Upgrades, performance tuning and new features delivered by a retained engineering team.
Security practices in blockchain development
Threat modelling
Every architecture is reviewed against key compromise, reorgs, oracle failure and dependency risks.
Key management
HSM, MPC or multisig designs with separation of duties and approval thresholds.
Contract testing
Unit, integration, invariant and fuzz tests with coverage tracked in CI.
Infrastructure hardening
Network isolation, least-privilege IAM, secrets management and patched, monitored nodes.
Audit coordination
We prepare scope, documentation and fixes for independent auditors when required.
Incident readiness
Pause mechanisms, runbooks and on-call procedures defined before launch.
We coordinate independent third-party audits on request and never claim an audit, certification or compliance status unless it has actually been obtained.
What to decide before building on-chain
Public vs permissioned
Public chains give neutrality and liquidity; permissioned networks give control and privacy. Many products need a hybrid.
Custody model
Who holds keys, how approvals work and what happens on compromise shapes the entire architecture.
Data that belongs off-chain
Only commitments and transfers of value need consensus; most application data should stay in conventional stores.
Upgradeability
Immutable code is safest but inflexible. Upgrade paths need governance, timelocks and clear communication.
Regulatory exposure
Token issuance, custody and payments may trigger licensing requirements that influence design.
Operational cost
RPC traffic, archive storage and indexing are recurring costs that should be modelled early.
Blockchain Development questions
A focused component such as an indexer or a contract suite typically takes several weeks; a complete platform with custody, infrastructure and applications is usually a multi-month engagement delivered in milestones. Discovery produces a concrete plan with dates.
Explore adjacent capabilities
Planning a blockchain product or protocol?
Share your goals and constraints. We will respond with an architecture perspective and a realistic delivery plan.