Senior Software Engineer, Marketing Platform Tooling

ABOUT THE ROLE We are seeking a highly skilled Senior Software Engineer to join our Marketing Platform Tooling team at Instacart. As a key member of this team, you will play a critical role in building and maintaining the core backend systems that power Instacart's marketing capabilities. This is a unique opportunity to work on production-scale platforms, including the Targeting Platform (TaaS) and CRM Messaging Service (CRMS), and contribute to the development of the Unified Marketing Backend (UMB). WHAT YOU'LL DO As a Senior Software Engineer on this team, you will be responsible for architecting, building, and maintaining high-quality backend systems for TaaS and CRMS. You will also play a central role in designing and building the UMB, a composable platform that will serve as the shared foundation for all of Instacart's marketing infrastructure. Your responsibilities will include: - Architecting and building scalable, reliable distributed systems, including working with relational and NoSQL databases and data pipelines - Designing and implementing real-time targeting, campaign health and observability, API and eventing integrations, and CRM white-label expansion - Collaborating extensively across backend and full-stack engineering, Product, Design, and adjacent platform teams - Contributing to building a sustainable on-call rotation as the team scales - Balancing ongoing platform stability work with a growing H2 roadmap and helping reduce execution risk on two of Instacart's most critical systems WHAT YOU'LL NEED To be successful in this role, you will need: - 5+ years of backend software development experience with a proven track record of delivering production systems at scale - Proficiency in Ruby or Python, with experience with Go a plus - Hands-on experience with Rails or Pandas in a production environment - Experience designing and building scalable, reliable distributed systems - Demonstrated ability to write rigorous unit tests and work through complex technical problems independently - Strong communication skills with experience collaborating across engineering, product, and cross-functional teams - Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience WHY REMOTE At Instacart, we are a Flex First team, which means we prioritize flexibility and remote work. We believe that our employees should have the freedom to choose where they do their best work, whether that's from home, an office, or a coffee shop. As a remote employee, you will have the opportunity to work from anywhere and still be connected to your team and community through regular in-person events and virtual collaboration tools. BENEFITS Instacart offers a comprehensive benefits package, including: - Health plan - Parental leave - Education stipend - Life insurance - Equipment stipend - Flexible schedule - Professional development opportunities