Rust Engineer

MWDN • Madrid, MD

10d

About The Position

MWDN is hiring a Rust Engineer for a technology startup building an AI-powered platform for autonomous data lakehouse management and optimization. The product automates data maintenance, improves query performance, and reduces infrastructure costs across large-scale data environments using Apache Iceberg. The team works on high-performance data systems, distributed computing, Rust-based optimization, and AI integration.

The role involves building and maintaining high-performance data lakehouse infrastructure and reliable Apache Iceberg maintenance workflows, including compaction, snapshot expiry, manifest rewriting, and orphan file cleanup. Data integrity and correctness are central to the work. The position also contributes to a Rust-based, multi-engine SQL query router by maintaining connectors, reviewing community contributions, and helping shape the product roadmap. The engineer will have significant ownership of complex data infrastructure challenges in an early-stage, product-focused startup, and will run and support their work in production, including on-call and debugging in customers’ environments.

Requirements

• 5+ years of software development experience.
• Strong Rust development experience.
• Production experience with data infrastructure and maintaining production systems.
• Working knowledge of Apache Iceberg and Parquet.
• Solid experience with PostgreSQL.
• Experience with Kubernetes.
• Understanding of data maintenance operations and data integrity.
• Ability to work independently and take ownership of technical solutions.
• Strong communication and collaboration skills, including code reviews and open-source contributions.

Nice To Haves

• Experience with Apache Spark or DataFusion.
• Experience with Tokio.
• Experience with TypeScript.
• Experience with query engines such as Trino.
• Experience with SQL routing, query proxying, or multi-engine query systems.

Responsibilities

• Design and ship services that turn table health signals into safe, correct maintenance operations.
• Ensure every commit to a customer’s table is verifiably correct, including under concurrent writers, retries, and partial failures.
• Work on a production-grade compaction engine and its surrounding systems.
• Maintain QueryFlux by triaging issues, reviewing pull requests, building engine connectors, and cutting releases.
• Run built systems in production, including on-call and debugging in customers’ real environments.
• Build and maintain data lakehouse infrastructure and Apache Iceberg maintenance workflows, including compaction, snapshot expiry, manifest rewriting, and orphan file cleanup.

Benefits

• Flexible working hours.
• 29 days of PTO (18 working days per year plus all national holidays).
• 10 paid recovery days.
• Full financial and legal support for independent contractors.
• Free English classes with native speakers or Ukrainian teachers.
• Dedicated HR support.
• Career support to help find new project opportunities if a project is not the right fit.
• Professional growth opportunities and team-building events.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed