Senior Data Platform Engineer: ClickHouse at Scale

Qualys; Foster City (CA); On-site; USD 180,000 - 250,000; Full time

Job summary

Qualys is seeking a Senior Software Engineer to advance our data platform and middleware. You will prototype, design, and build a scalable SaaS data platform handling vast transactions and terabytes of data daily. Expect to scale ClickHouse, optimize ingestion and query performance, and drive automated deployment pipelines.

You will collaborate with a talented team, contribute to open source, and ensure resilient operations across cloud and on-prem environments.

Qualifications

• BS/MS in Computer Science or related field.
• 5+ years of SaaS/ cloud software experience.
• Proven expertise in ClickHouse internals and architecture.
• Experience with public clouds (AWS, GCP, Azure) or private clouds.
• Strong problem-solving and debugging abilities.
• Hands-on coding with high-quality, production-ready APIs.

Responsibilities

• Prototype, design, develop and support a scalable SaaS data platform.
• Operate and scale ClickHouse on premise or in cloud environments.
• Drive capacity planning and performance tuning for big data workloads.
• Deliver resilient client SDKs and engage with open-source community.
• Instrument day 1 and day 2 operations for data technologies; enable zero-downtime scaling.
• Collaborate across teams to meet reliability, cost, and availability goals.

Skills

SaaS software development

Problem-solving

Distributed systems

Agile software development

Data structures & algorithms

Architecting scalable systems

Strong debugging skills

Excellent communication

Education

BS/MS in Computer Science or related field

Tools

ClickHouse

Terraform

Docker

Kubernetes

CI/CD pipelines

Maven/Gradle

Grafana/Prometheus

Kafka/Elasticsearch/Cassandra

HashiCorp tools (Consul, Vault, etc.)

Job description

Qualys is seeking a Senior Software Engineer to advance our data platform and middleware. You will prototype, design, and build a scalable SaaS data platform handling vast transactions and terabytes of data daily. Expect to scale ClickHouse, optimize ingestion and query performance, and drive automated deployment pipelines.

You will collaborate with a talented team, contribute to open source, and ensure resilient operations across cloud and on-prem environments.