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Senior Software Engineer - Query Optimization

About Jitsu
Jitsu is an early stage company that is building a relational compute platform that runs at cloud  scale. Its ultra-fast SQL queries run directly on unlimited data, without the need of a data warehouse, for thousands of business/data analysts while delivering extreme scalability at the lowest cloud costs. We are working with some top-tier Wall Street banks and financial institutions to develop solutions that dramatically reduce their cloud costs.

Jitsu is building a global and diverse team of highly technical and motivated developers. This is an opportunity to bring your drive, passion and technical expertise to innovate and deliver products to enterprise companies and create a significant impact regardless of your location or zip code.

About The Role

We are looking to hire a Sr. Query Optimization Software Engineer to join our team. As a critical part of our engineering team you will have responsibilities in the development of the relational compute engine.


  • Make changes and improvements to the existing query optimization and add new query optimization rules

  • Benchmark queries and explore different query optimization techniques

  • Make improvements to decision making in the cost based optimization based on table stats

  • Propose and implement improvements to the query parsing and optimization framework

  • Analyze and understand performance and scalability bottlenecks in the system and address them

  • Promote strong collaboration within a cross functional team

Desired Skills/Experience

  • Experience committing to open source PostgreSQL, and Apache projects such as Spark, Arrow, Iceberg, and Presto, is a big plus

  • 3+ years of production level experience in Scala, Java and/or C++

  • BS/MS in Computer Science is desirable but not required

  • Solid understanding of algorithms and datastructures

  • SQL or other database technologies including internal design and implementation

  • Familiarity with query optimization and query execution

  • Distributed system development experience

  • Systems programming skills including multi-threading, concurrency, etc.

  • Experience with implementation testing, debugging and documentation

  • Attention to detail and ability to build reliable and scalable software systems


● Uncapped PTO
● Medical, Dental and Vision

● Life, AD&D, Long-Term and Short-Term Disability Insurance

● Flexible Spending Accounts

● 401k
● Work from home with operational office cost reimbursement

We are an equal opportunity employer that values diversity. We do not discriminate on gender, gender expression or orientation, race, color, age, medical disabilities, nationality, race, or marital status. We are an open company and welcome any questions you may have on your personal status and how that may affect employment. We are here to help, resolve, and do whatever is needed to build a world-class team.


If interested in the position please send your resume to Principals only.

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