Staff Software Engineer, OneSignal

• Significant experience optimizing Scylla at scale
• At least 8 years experience working as a software engineer
• Ability to work on a self-motivated team, high performing team
• Experience operating reliable production systems at scale
• Easily bored running tasks by hand and the ability to automate such tasks
• Experience with distributed system event streaming framework such as Apache Kafka
• Experience with Rust, Golang or other lower level languages. Those with backgrounds in interpreted languages may have a steeper learning curve with Rust, but if you have worked on core components of very high throughput systems, please apply
• Ability to reason about how data flows through distributed systems
• Experience with Docker and Kubernetes

Desirable

• Scylla, Postgres, ClickHouse, and Redis comprise the core of our data infrastructure
• As such, they need to be performant and reliable for all our use cases
• As a Scylla & DB focused Software Engineer, you will primarily take ownership of our Scylla clusters and ensure they are used and managed with best practices at scale
• This includes improving uptime, latency, restorability, partitioning, etc
• You will also work closely with other engineers in moving and replicating data to optimal data stores
• Your secondary responsibilities will include learning Postgres and ClickHouse - schema and query design, partitioning strategies, etc, along with writing microservices
• Optimize a scaling strategy for our high performance Scylla clusters
• Design and optimize schemas, queries, indices, caches and more, primarily for Scylla, eventually for Postgres and ClickHouse
• Conduct data analysis and performance monitoring to identify areas for optimization and enhancement
• Collaborate closely with fellow engineers to architect and implement services required to back OneSignal’s product offerings
• Actively participate in peer code reviews and Technical Design Spec reviews, providing valuable technical insights to continuously improve our code base
• Work with the team to efficiently resolve production issues and ensure the system scales smoothly to meet the growing demands of our customers
• Stay up-to-date with the latest industry trends and technologies, incorporating new ideas into our engineering processes
• Participate in production on-call rotation
• Debug production issues by utilizing metrics, logs, and distributed traces
• Design synchronous and asynchronous APIs for communicating between services in a large distributed system