Staff Software Engineer – Query Planner, Reflections

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🔥 23 minutes ago

🇵🇹 Portugal – Remote

⏰ Full Time

🔴 Lead

🧑‍💻 Full-stack Engineer

👻 Ghost score 11%

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Dremio

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2015

📚 Education

🤝 B2B

☁️ SaaS

Education • B2B • SaaS

Dremio is an innovative company that offers educational resources and certifications through Dremio University, providing courses and badges in data analytics and product development. It aims to empower professionals in the tech and data field by offering specialized training for roles such as Data Analyst and Data Engineer, ultimately enhancing their skills and career prospects.

📋 Description

• Set architecture and technical direction for the Query Planner and Reflections team across OSS, Enterprise, and Cloud editions • Own the design, implementation, and delivery of complex initiatives crossing Query Execution, Catalog, and Datalake teams • Work deeply with Apache Calcite and Apache Iceberg, including upstream contributions where beneficial to Dremio • Diagnose difficult correctness and performance issues in query planning and reflection matching using query profiles, telemetry, and production data • Use AI-assisted development tools for code comprehension, debugging, test generation, documentation, and incident analysis; validate generated code through review, testing, and benchmarking • Design architectures that run correctly across deployment models and public clouds • Participate in design and code reviews and establish technical standards • Partner with Product on multi-quarter roadmap decisions and with Support and field teams on high-impact customer issues

🎯 Requirements

• B.S./M.S/Equivalent in Computer Science or a related technical field or equivalent experience • 8-10+ years of experience developing production-level software • Fluency in Java/C++ is a plus • Deep understanding of query planning and optimization, including cost-based optimizers and rule-based rewriting; ideally hands-on with Apache Calcite or a similar framework • Strong database fundamentals: SQL, performance, and schema design • Track record of driving system-level architecture decisions and leading complex, cross-team initiatives • Experience setting technical direction for a team or major component • Ability to evaluate tradeoffs and make sound decisions with unfamiliar or AI-assisted implementations • Ability to navigate ambiguous, cross-org problems independently; strong communication skills • Understanding of distributed file systems such as S3, ADLS, or HDFS • Experience with AWS, Azure, or GCP is a plus • Experience with distributed query engines is a bonus • Hands-on experience in query processing or optimization, materialized view matching, distributed systems, concurrency control, code generation, Apache Arrow, caching, or disk spilling is a bonus • Contributions to Apache Calcite, Apache Iceberg, or similar open-source planner projects are a bonus

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