Mike Coutermarsh is a software engineer with 15 years of experience based in Greater Philadelphia, currently building scalable developer-facing systems at PlanetScale and co-founding HTML/CSS to Image. He helped shape GitHub Actions and the Marketplace as a senior and staff engineer at GitHub, bringing deep expertise in platform integrations and CI/CD. Mike is an active open-source tinkerer—his dotfiles repository and vim/tmux/zsh customizations reflect a strong focus on developer productivity and ergonomics that informs his product work. His career spans startups and large engineering organizations, from Product Hunt to UTC, blending hands-on engineering with product-minded leadership. Outside work he’s a self-described coffee-and-cat enthusiast, which hints at a mix of focused concentration and playful curiosity in his approach.
15 years of coding experience
12 years of employment as a software developer
Bachelor of Science (BS), Computer Science, Bachelor of Science (BS), Computer Science at Quinnipiac University
Contributions:146 commits, 13 PRs, 64 pushes in 8 years
Contributions summary:Mike primarily focused on enhancing the user's Vim and Tmux configuration files, as indicated by the repository description and topics. They implemented various plugins and configurations for Vim, including Vim-Plug, fzf, and several language-specific plugins like Typescript, and Ruby refactoring, alongside general enhancements. Their contributions also included updates to zsh, the addition of a tmuxinator for session management, and incorporating functionality like golden ratio for auto split resizing, suggesting a focus on improving developer workflow and environment customization.
Contributions:6 commits, 1 PR, 4 pushes in 2 years 9 months
comparingapipythonimage-comparisonsimple-api
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.