Senior ClickHouse Engineer

About Moralis

Moralis is redefining how businesses access blockchain data. Our APIs, streaming tools, and multi-chain integrations help developers and enterprises build Web3 applications faster, cheaper, and at scale. We’re a lean, global team with a big mission: to become the go-to data layer for the decentralized internet.

Role Overview

We’re looking for a dedicated and experienced ClickHouse DBA to take full ownership of our analytical database infrastructure. As more of our product shifts to ClickHouse, we need a specialist who can keep our clusters fast, reliable, and cost-efficient. You’ll partner closely with our backend and infra teams, enabling them to move faster while ensuring the database remains rock solid.

What You’ll Do

Cluster Operations

• Manage and scale ClickHouse clusters (replication, sharding, distributed tables).


• Handle schema evolution, partitioning strategies, and TTLs.


• Maintain data consistency across replicas and shards.


• Plan and execute upgrades with zero or minimal downtime.

Performance & Optimization

• Profile and optimize heavy queries and table engines.


• Tune key configs (max_threads, max_memory_usage, merge settings, I/O schedulers).


• Benchmark cluster performance (ingest throughput, query latency, merge rate).


• Work with engineers to optimize schema and query patterns.

Monitoring & Reliability

• Maintain observability stack: Prometheus, Grafana, and system logs.


• Set up alerting on query performance, merges, replicas, and disk usage.


• Own backup and restore processes (S3, NFS, or local snapshots).


• Test and document disaster recovery scenarios.

What We’re Looking For

• 2+ years hands-on ClickHouse experience and 4+ years working as a DBA with distributed or analytical databases.


• Strong understanding of replication, partitioning, and distributed table design.


• Experience with performance tuning and large-scale OLAP workloads.


• Familiarity with observability stacks (Prometheus/Grafana).


• Hands-on experience managing production clusters with high uptime requirements.


• Comfortable taking full ownership of mission-critical systems.

Nice-to-Have

• Experience with multi-cluster or cross-region setups.


• Familiarity with ClickHouse Cloud or Altinity.Cloud.


• Experience using S3/object storage as part of a ClickHouse deployment.


• Background in Druid, Pinot, BigQuery, Snowflake, or similar OLAP systems.


• Contributions to ClickHouse open source.

Who You Are

• Deeply detail-oriented and passionate about performance and reliability.


• Comfortable working remotely and asynchronously in a fast-paced environment.


• Proactive about improving infrastructure, automation, and data quality.


• Excited to work in the Web3/data space and learn new technologies.

What We Offer

• Compensation: Competitive part-time engagement with flexible hours and the ability to convert to full-time as the role evolves.


• Ownership: You’ll own our ClickHouse infrastructure end-to-end.


• Culture: Remote-first, async-friendly, and product-led team distributed across Europe and beyond.