Senior Software Engineer — Lakehouse Systems

Senior Software Engineer — Lakehouse Systems

Location: Mountain View, CA — On-site

About Granica

Granica builds AI infrastructure for enterprises operating massive data environments.

Our platform helps data and engineering teams reduce storage and compute costs, improve performance and reliability, and prepare large datasets for analytics and AI.

Granica’s products include:

Crunch — continuous optimization for enterprise lakehouse data

Myelin — stateful infrastructure for long-running AI agents

Large Tabular Models — foundation models designed for enterprise tables

Together, we are building the infrastructure that enables enterprises to own their data, own the intelligence built on it, and scale both efficiently.

Granica has demonstrated approximately $200K in annualized value per petabyte and verified customer value within weeks.

About the Role

Granica is hiring a Senior Software Engineer to build foundational lakehouse systems for AI.

You will work on the core infrastructure behind Crunch , Granica’s continuous optimization product for enterprise lakehouse data. This includes systems for metadata management, transaction semantics, table maintenance, object-store-backed storage layouts, file-level optimization, and lakehouse cost/performance across petabyte- and exabyte-scale environments.

You will own core systems that directly affect customer infrastructure cost, query performance, table reliability, and the operational health of large lakehouse environments.

This is a hands-on engineering role for someone who has deep systems experience and wants to build at the intersection of data lakes, table formats, metadata systems, storage layout, query performance, and AI infrastructure.

You will work on lakehouse systems involving Apache Iceberg, Delta Lake, Apache Hudi, Parquet, ORC, cloud object stores, and query engines such as Spark, Trino, Presto, Flink, Databricks, and Snowflake-adjacent environments.

What You’ll Do

Build metadata and transaction systems for large-scale tabular datasets

Design systems that support time travel, schema evolution, partition evolution, snapshot isolation, and atomic consistency

Develop table-maintenance infrastructure for lakehouse formats such as Apache Iceberg, Delta Lake, and Apache Hudi

Build systems for manifests, snapshots, transaction logs, metadata pruning, snapshot expiration, table garbage collection, and catalog consistency

Optimize file layout, clustering, compaction, file sizing, data skipping, indexing, and read-path performance

Improve performance and cost efficiency across object-store-backed lakehouse environments such as S3, GCS, and ADLS

Work with columnar formats such as Parquet and ORC, including encoding, compression, layout, pruning, and read-path optimization

Build systems that make lakehouse tables faster, cheaper, and more reliable across engines and platforms such as Spark, Flink, Trino, Presto, Databricks, and Snowflake-adjacent environments

Debug performance bottlenecks across storage, metadata, table maintenance, query execution, network, and compute layers

Develop workload-aware table optimization systems that learn from access patterns and reorganize data automatically

Implement algorithms in compression, representation, layout optimization, and data efficiency

Contribute to open-source or publish research when appropriate

What We’re Looking For

Strong engineering depth in distributed systems, storage systems, databases, or data infrastructure

Production experience with modern data lake or lakehouse technologies such as Iceberg, Delta Lake, Hudi, Spark, Trino, Presto, Flink, Hive Metastore, Unity Catalog, or similar systems

Hands-on experience with columnar formats such as Parquet or ORC

Understanding of metadata-driven architectures, table formats, transaction semantics, query planning, and physical data layout

Experience with table maintenance, compaction, clustering, file sizing, metadata pruning, snapshot expiration, or garbage collection

Familiarity with cloud object storage systems such as S3, GCS, or ADLS and the performance tradeoffs of building lakehouse systems on top of them

Strong programming skills in Java, Scala, Go, Rust, C++, or similar systems-oriented languages

Curiosity about compression, entropy, information theory, and how data representation affects AI efficiency

A pragmatic builder’s mindset: rigorous, hands-on, and comfortable owning complex systems end to end

Bonus

Experience contributing to Apache Iceberg, Delta Lake, Apache Hudi, Spark, Flink, Trino, Presto, Velox, DuckDB, Polars, Parquet, ORC, or related systems

Experience with manifests, snapshots, metadata catalogs, schema evolution, partition evolution, delete handling, transaction logs, or table garbage collection

Experience solving the small-file problem, optimizing object-store access patterns, or improving table health at scale

Background in storage engines, query engines, indexing, caching, encoding, compression, or adaptive query optimization

Research or open-source contributions in distributed systems, databases, storage, compression, indexing, or data processing

Interest in how physical data representation affects model training, inference, retrieval, and reasoning efficiency

Why Join Granica

Build foundational infrastructure for enterprise data and AI

Work on deep systems problems across lakehouse metadata, transaction semantics, table maintenance, storage layout, object-store behavior, query performance, and AI efficiency

Partner directly with Product, Engineering, and company leadership

Help shape Crunch, Granica’s production data optimization platform for enterprise-scale lakehouse environments

Work with a small, high-caliber team solving high-value infrastructure problems at massive scale

Have direct influence on architecture, product direction, customer outcomes, and company growth

Compensation & Benefits

Competitive salary, meaningful equity, and performance bonus for top performers

401(k) with company match, comprehensive health coverage, and unlimited PTO

Daily catered meals in our Mountain View office

Support for research, publication, and conference participation

At Granica, you'll help build the next generation of enterprise AI —from exabyte-scale data infrastructure , Large Tabular Models (LTMs) , and stateful AI agents . Together, we're creating the infrastructure that enables enterprises to own their data , own the intelligence built on it , and scale both efficiently .