Prathamesh Sonpatki is a Field CTO and seasoned software engineer with 14 years of experience building backend systems, observability tooling for AI-native teams, and developer-facing products from Sunnyvale. He brings deep Ruby/Rails and Golang expertise, plus strong database and test-automation skills demonstrated by contributions to high-profile projects like rails/rails, jruby/jruby, and React Native. At Last9 he moved from senior engineer and developer evangelist roles into field leadership, combining hands-on engineering with customer-facing reliability work. His background includes migrating systems to cloud-native platforms, security assessments, and improving testing infrastructure—work that reflects a pragmatic focus on reliability and developer experience. Collected early on through open-source and community roles, his mix of code-first craftsmanship and field leadership makes him effective at translating operational pain points into durable platform features.
14 years of coding experience
2 years of employment as a software developer
Dravid High School Wai
Bachelors degree, Computer Science and Engineering, Bachelors degree, Computer Science and Engineering at Vishwakarma Institute Of Technology Pune
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Role in this project:
Back-end Developer
Contributions:521 commits, 416 PRs, 419 pushes in 7 years 6 months
Contributions summary:Prathamesh primarily focused on enhancing the functionality and maintainability of the back-end code. Their contributions involved modifying user-related code, fixing database-related issues with duplicate columns, and refactoring the codebase to align with Rails 4 and later versions. They also addressed route-related issues. The user also worked on test related files, updating code to maintain Rails versions.
Don't reinvent the wheel for every new Rails project. Use sane Defaults.
Role in this project:
Full-stack Developer
Contributions:70 commits, 56 PRs, 43 pushes in 4 years 7 months
Contributions summary:Prathamesh primarily contributed to the Rails-based backend and made changes to the front-end layout files. They updated the application to newer versions of Rails, including version 4.1 and 4.2. Furthermore, the user performed various configuration updates, added and removed gems, and configured deployment settings, showing familiarity with project setup and configuration.
ruby-on-railsboilerplaterailsrubywheel
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Prathamesh Sonpatki - Developer Evangelist at Last9 Inc