Principal Performance Engineer

Company Description

DNAnexus is a leading provider of secure, scalable, and intuitive biomedical data analysis software and bioinformatics applications for the life sciences and healthcare communities. The company actively manages and supports more than 80 petabytes of complex genomic, multi-omic, and clinical datasets on behalf of a growing network of collaborations with large-scale biobanks, as well as leading pharmaceutical, clinical diagnostic, academic research, and government organizations. Over 40,000 scientists across 48 countries are now using the highly collaborative, cloud-based, end-to-end platform to gain data-driven insights that can advance scientific discovery, accelerate precision medicine, and improve patient care.

Job Description

What we offer

• Aggressively growing shard (~1.5-2TB/month) crossing mongoDB shard scalability threshold
• Actively working with the MongoDB engineering team who designed sharding to solve complex scalability/performance issues

Expectations:

• Help define good practices for application/db interfacing
• Help tuning/optimization of indices usage
• Actively reviewing our API routes, database performance and make suggestions to all engineering teams to optimize bottlenecks 
• Help tuning database parameters and help performance testing to validate performance impact
• Keeping up with MongoDB release notes, making suggestions to all engineering teams about best practices, new releases and capabilities
• Help communicating with MongoDB support engineers

Qualifications

• Application code perf optimization experience (ideally with NodeJS)
• Good knowledge of DB engines (DB specialist with software dev background, expert programming experience)
• Experience with DB perf optimization
• Experience with distributed systems/microservice architectures
• Knowledge of DBs (preferably NoSQL / document DBs)
• Strong CS background, theory knowledge

Nice to have:

• MongoDB experience
• NodeJS experience
• Real-world experience with performance/stress/load testing

Additional Information

Headquartered in Mountain View, California, with over 220 team members across the United States and Europe, DNAnexus is experiencing rapid growth and market adoption. With the support of leading investors including Google Ventures and Blackstone, and trusted by hundreds of the world's biomedical leaders, the company is at the innovative forefront with our precision health data cloud to drive scientific breakthroughs. If you are interested in joining our team, please apply today!

DNAnexus will provide the necessary support to enable the ideal candidate to work remotely within the Czech Republic.