Senior Data Platform Engineer — ClickHouse Expert

QLYS_US Qualys, Inc.; Foster City (CA); On-site; USD 125,000 - 145,000; Full time

Job summary

Qualys, Inc. is seeking a Senior Software Engineer to join the Data Platform team, focusing on ClickHouse-based data services.

You will prototype, design, and scale a SaaS data platform handling billions of events in the cloud, collaborating across our engineering and architecture groups. We expect deep ClickHouse expertise, strong Java skills, and experience with distributed systems, CI/CD, and cloud ecosystems (AWS, GCP, Azure).

Qualifications

• BS/MS in Computer Science, Applied Math or related field.
• 5+ years of SaaS data platform development in cloud environments.
• Strong debugging and API design skills.

Responsibilities

• Architect and implement scalable ClickHouse-based data platform services.
• Design schemas and optimize ingestion, queries, and storage.
• Operate ClickHouse at scale on-premises and in the cloud.
• Drive capacity planning and performance tuning for large workloads.
• Deliver resilient client SDKs and contribute to open-source projects when appropriate.

Skills

ClickHouse

Java

Distributed systems

Problem solving

Agile methodologies

Education

BS/MS in Computer Science or related field

Tools

Terraform

Docker

Kubernetes

Grafana

Prometheus

Kafka

Redis

Job description

Qualys, Inc. is seeking a Senior Software Engineer to join the Data Platform team, focusing on ClickHouse-based data services.

You will prototype, design, and scale a SaaS data platform handling billions of events in the cloud, collaborating across our engineering and architecture groups. We expect deep ClickHouse expertise, strong Java skills, and experience with distributed systems, CI/CD, and cloud ecosystems (AWS, GCP, Azure).