# Jonah Liebert > Platform / Backend Software Engineer | Experienced | Collaborative | Team-Oriented | Accountable Location: Berkeley, California, United States Profile: https://flows.cv/jonahliebert Experienced and detail oriented software engineer. Key contributor who prefers hands-on implementation and coding in a highly collaborative team environment coupled with excellent team and project leadership. ## Work Experience ### Software Engineer - Developer Platform @ Pave Jan 2025 – Present | San Francisco, California, United States ### Volunteer Software Engineer @ Watch Duty Jan 2024 – Jan 2025 | San Francisco Bay Area ### Backend Algorithms Platform Engineer @ Stitch Fix Jan 2020 – Jan 2024 | San Francisco Bay Area Member of the Machine Learning Platform team that owned a custom Feature Store, an internal service framework leveraging FastAPI, client/catalog data pipelines, and support for data science teams deploying and scaling recommenders in production. Collaborated with a small team to design a new system in AWS built primarily with Python, Redis & Go (golang) to replace a legacy, memory intensive Python+Pandas candidate filtering application. Primary goals: scalability, flexibility, modularity, decreased latency and memory efficiency. Migrated key legacy services reliant on offline data generated daily to use real-time, low latency client and inventory data. Facilitated merchandising and product team requests to enable quick wins that increased inventory exposure and dramatically improved sell-through rates. One of a few engineers to overhaul a high-throughput internal routing and configuration layer fronting hundreds of back-end Algorithms services in AWS. Collaborated across teams to build a novel, performant mechanism providing detailed, up-to-the-second client information as JSON with a shared schema. The system enabled brand new realtime shopping features on Stitch Fix services. ### Founding Engineer @ Trace Data Jan 2019 – Jan 2020 | Oakland, California, United States Member of the founding team that designed and built a data security system that included tracing, ingestion, flexible back-end APIs and a web front-end. Primarily worked in Java, Go, PostgreSQL, InfluxDB, Druid, Redis, GCP. Reviewed code and dabbled in TypeScript, Node.js, React-Redux front-end features. Built APIs collating data from multiple data sources for front-end use. ### Staff Software Engineer @ Pandora Jan 2017 – Jan 2019 | Oakland, California, United States Worked with search scientists to implement a customized Podcast search system specifically tailored to the format and the unique relationships between entities. Owned, managed and scaled Pandora's search system with a team of 2 other engineers. Technologies: Python, Clojure, Kafka, Elasticsearch and Hive. ### Senior Software Engineer @ Pandora Jan 2013 – Jan 2017 | Oakland, California, United States Member of a small team that replaced Pandora's legacy metadata management system with an extensible Java-based system that processes large and varied datasets in parallel, improving visibility, reliability, and throughput. Led a team of 5-7 engineers that built Pandora's first full-featured near real-time runtime rights system in Java, heavily leveraging Kafka, ZooKeeper & PostgreSQL. Enabled Pandora to roll out truly on-demand music features for the first time. Worked with data scientists to build a runtime system that reduced the likelihood recommended songs would have characteristics the listener generally dislikes. Built a reliable, easy-to-use, real-time independent music submission service that replaced a legacy system. Reduced bottlenecks and increased throughput 15x. ### Senior Platform Engineer @ Rocket Lawyer, Inc Jan 2010 – Jan 2013 | San Francisco, CA Led a team responsible for events and sales data across internal and external systems such as Salesforce and Marketo using robust back-end services and jobs. Part of a core team that architected and implemented an SOA platform for scalability, maintainability, and ease of development across US and UK sites. Built a comprehensive suite of internal admin tools allowing non-technical team members to generate, relate and manage content driving the web application. ### Senior Software Engineer, Platform @ Lithium Technologies Jan 2009 – Jan 2010 | Emeryville, California, United States Led a team of developers that ported legacy admin applications to an extensible and developer-friendly Spring-based stack complete with server-side Java APIs. Key contributor in the effort to migrate a legacy single-tenant application into a scalable multi-tenant system, improving reliability and breaking dependencies. ### Senior Platform Engineer @ Radar Networks Jan 2007 – Jan 2009 | San Francisco Bay Area Helped design and build a next-generation user application meant to scale easily and grow quickly, using Spring + JSP, MySQL, Solr, RDF/XML and ehcache. Maintained knowledgebase and triplestore supporting a semantic data platform. Designed and implemented JMS-based mechanism allowing subscribers to receive notifications from the persistence layer. ### Senior Software Engineer @ StubHub Jan 2006 – Jan 2007 | San Francisco Bay Area Member of Platform Core Systems team that architected, designed and implemented the core platform, enabling long-term business goals. Key contributor on team that ported large, customer-facing, legacy ColdFusion applications to Java. ## Education ### BA in History University of California, Berkeley ### Certificate in Computer Programming C++ City College of San Francisco ## Contact & Social - LinkedIn: https://linkedin.com/in/jonahliebert --- Source: https://flows.cv/jonahliebert JSON Resume: https://flows.cv/jonahliebert/resume.json Last updated: 2026-04-11