EVM Smart Contract Event Listener Development

Real-time event ingestion from Ethereum, Polygon, Arbitrum, and other EVM chains. We handle chain-specific RPC nuances and ensure data consistency across your entire stack.

Fault-tolerant architecture with automatic reconnection, transaction replay, and dead-letter queues. Guaranteed data integrity even during network partitions or RPC outages.

Transform and enrich raw blockchain data into actionable business logic. We implement filters, aggregations, and webhook triggers tailored to your application's needs.

Rapid ingestion of historical events from genesis block or any specified height. Essential for analytics dashboards, compliance reporting, and application onboarding.

Built with security-first principles. Includes comprehensive logging, Prometheus metrics, Grafana dashboards, and alerting for anomalous event patterns or system health.

Cloud-agnostic deployment on AWS, GCP, or Azure using Kubernetes. Auto-scaling listener pools to handle volatile transaction volumes during market events.

Enable instant UI updates, notifications, and transaction confirmations for your users by capturing on-chain events as they happen, eliminating polling delays.

Trigger backend workflows, update databases, and execute business logic with guaranteed delivery of critical contract events like token transfers or governance votes.

Build a future-proof data layer that scales with your user base and transaction volume, from mainnet to L2s, without re-architecting.

Eliminate the maintenance burden of managing node infrastructure, handling re-orgs, and building resilient listener logic. We own the operational complexity.

Ship features dependent on on-chain data—like dashboards, alerts, or reward systems—weeks faster by leveraging our pre-built, production-ready listeners.

Ensure data integrity and audit trails with cryptographically verified event sourcing, built-in replay protection, and compliance-ready logging.

We analyze your target contracts, define event schemas, and design a scalable listener architecture. Deliverables include a technical spec and infrastructure diagram.

We build robust, fault-tolerant listeners in your preferred stack (Node.js/Python/Go) with configurable RPC failover, block confirmation handling, and real-time event parsing.

We implement your chosen data sink (PostgreSQL, TimescaleDB, Kafka, Webhook) with schema enforcement, deduplication logic, and indexing for high-performance queries.

Rigorous testing including reorg simulation, RPC provider failure recovery, load testing, and security review for data consistency and denial-of-service resilience.

We deploy to your cloud (AWS/GCP) or on-premise environment with comprehensive monitoring (Prometheus/Grafana), alerting, and logging for all listener health metrics.

Complete technical documentation, operational runbooks, and knowledge transfer sessions ensure your team can maintain and extend the system independently.