Software Engineer, Lakehouse (Data Platform Group)
Cato Networks · Tel Aviv
Cato Networks is the converged network and security cloud for the AI era.
As AI reshapes cybersecurity, enterprises face a dual challenge: unlocking AI’s potential while defending against AI-driven attacks. Cato addresses both through a unified, cloud-native platform, providing the visibility and context to prioritize risks and stop threats in real time across users, applications, data, and AI agents.
Join us as we scale: take on ambitious technological challenges and shape the next generation of enterprise security at a company trusted by thousands of organizations worldwide.
We're looking for an experienced Software Engineer to join our Data Platform Group. In this key role, you will build the company data platform: cloud-based microservices and data pipelines that process on the order of 1M records/sec at low latency. Because the platform is the foundation other groups build on, your work has a direct impact on our customers and enables engineering, product, and research teams across the organization.
The Lakehouse team owns the data itself — how it is stored, organized, retained, and served. We own our analytical storage layer, the batch processing built on top of it, and the APIs through which customers and the rest of the company consume data. If you enjoy the problems that only appear at petabyte scale — physical data layout, query performance, storage cost, and retention — this is the role.
Responsibilities:
The Lakehouse team owns the data itself — how it is stored, organized, retained, and served. We own our analytical storage layer, the batch processing built on top of it, and the APIs through which customers and the rest of the company consume data. If you enjoy the problems that only appear at petabyte scale — physical data layout, query performance, storage cost, and retention — this is the role.
Responsibilities:
- End-to-end ownership of our large-scale analytical storage layer: data modeling, schema and table design, partitioning, retention, and query performance.
- Design and develop the batch processing layer over our data lake using Spark on EMR (Java and PySpark).
- Build and evolve Java/Spring Boot services that expose our data through well-defined APIs to customers and to consumers across the company.
- Own performance and cost: query optimization, file layout and compaction, cluster sizing, and storage efficiency at scale.
- Research new technologies in the lakehouse and analytical-storage space and adapt them for use in our product.
- Work closely with product, DevOps, and security teams.
Requirements:
- 5+ years of hands-on experience designing and developing large-scale distributed data systems in production, with a strong emphasis on performance.
- Deep, hands-on expertise in at least one of the following, at a significant scale:
- A columnar/analytical database — ClickHouse is a major advantage, including data modeling, query optimization, and operating it in production
- Apache Spark at an expert level, including tuning and optimizing large batch jobs.
- Experience with open table formats such as Iceberg, Delta Lake, or Hudi
- Experience with data lake technologies: Parquet, S3, and SQL query engines such as Athena, Trino, or Presto.
- Strong command of analytical data modeling and the design principles behind it: partitioning strategies, denormalization, batch vs. streaming trade-offs, and schema evolution.
- Strong Java and solid understanding of object-oriented design and software engineering principles.
- Experience building and running microservices on Kubernetes.
- Hands-on experience with the AWS platform, particularly EMR, S3, and Glue.
- Motivated, fast, independent learner and strong problem solver.
- A team player with excellent collaboration and communication skills.
- B.Sc. in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
More jobs at Cato Networks · Software Engineering jobs in Tel Aviv