Jerome Dalbert is a Senior Software Engineer with 13 years of experience building back-end systems for both world-leading companies and early-stage startups, currently based in California. He has led product-critical backend work—designing APIs, enterprise features, and migrations—that directly supported millions of users and helped land S&P 500 customers. A longtime Ruby and Rails specialist, Jerome has contributed to flagship open-source projects like RubyGems and Rails, improving gem generation, bundle commands, app generation, and deployment scripts. He combines deep implementation skill (Postgres, Redis, Sidekiq, Kubernetes, GCP/AWS) with product-minded engineering, having shipped integrations like GitHub apps, chatbots, and GenAI APIs. As a first hire and technical lead at startups, he’s repeatedly taken responsibility for architecture, migrations, and operational hardening while mentoring teams. Beyond shipping features, he focuses on developer experience and automation—refining tooling and CI to reduce friction and scale delivery.
13 years of coding experience
13 years of employment as a software developer
Master's degree Computer Science and Applied Mathematics, Master's degree Computer Science and Applied Mathematics at ENSEEIHT Engineering School
A levels in Mathematics Physics and Chemistry, A levels in Mathematics Physics and Chemistry at Gustave Eiffel High School
University Technology Diploma Computer Science, University Technology Diploma Computer Science at Bordeaux I University
Contributions:41 reviews, 40 PRs, 167 comments in 9 years 6 months
Contributions summary:Jerome primarily contributed to the Rails framework by addressing various aspects of application generation and configuration. Their work focused on refining the build process to optimize storage directory creation based on user configurations, and setting up Kamal deployment configurations. Additionally, the user implemented a script generator and added test cases. Moreover, they made updates to the controller and documentation and corrected some syntax errors.
Contributions:20 reviews, 17 PRs, 104 comments in 8 months
Contributions summary:Jerome primarily contributed to the RubyGems project by adding and improving features related to the `bundle` command-line interface and gem generation. They implemented options to control aspects like test framework, CI configuration, and linter integration during gem creation. Furthermore, the user refined existing functionality such as adding dependencies and fixed issues related to the `bundle check` command. They also worked on ensuring that the `bundle add` command and others handled various edge cases, including removal of gems.
rubygemspackagingpackage-managerrubymruby
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Jerome Dalbert - Senior Software Engineer at Buoy Software