Daniel Bernier is a multifaceted technologist-turned-craftsman who combines 18 years of software engineering experience with a professional practice as an owner and piano technician in Rhode Island. He has shipped backend systems at companies like TED Conferences, Anchor, and SeeClickFix and contributed to well-known open-source projects such as jekyll-import and PDFKit, improving import workflows and thread-safety in PDF generation. Equally comfortable refactoring legacy code and mentoring teams, Daniel has a track record of simplifying complex systems and improving maintainability across Ruby and .NET stacks. Outside software, he tunes grands and uprights, studies piano technology at The Butler School, and serves as secretary and librarian for his regional Piano Technicians Guild. As a public artist and co-creator of physical-pixel murals, he brings a creative, hands-on perspective to tooling and design. Based in Woonsocket, RI, he blends engineering rigor with musical craft and generative art practice.
17 years of coding experience
25 years of employment as a software developer
Ruby Mendicant University
BS, Computer Science, BS, Computer Science at Central Connecticut State University
the coder’s starter kit: sound, animation, video, messaging in a low-key ruby environment.
Role in this project:
Full-stack Developer
Contributions:108 commits in 12 days
Contributions summary:Daniel primarily focused on enhancing the lesson functionality within the Hackety Hack project, a Ruby-based environment for learning programming. Their contributions included fixing bugs related to lesson caching and lesson names. Furthermore, the user refactored the lesson structure by introducing `HH::Lesson` and `HH::LessonPage` classes. They also implemented Markdown rendering for lessons, allowing content creation directly from Markdown files.
A Ruby gem to transform HTML + CSS into PDFs using the command-line utility wkhtmltopdf
Role in this project:
Back-end Developer
Contributions:11 commits, 6 PRs, 60 comments in 3 years 4 months
Contributions summary:Daniel contributed to the PDFKit library by refactoring code, improving code readability, and introducing new features. They focused on optimizing the middleware by removing whitespace, and simplifying conditional logic. The user implemented support for root URL and protocol options, enhancing the library's ability to handle relative paths and protocols within HTML content during PDF generation. They also fixed a thread safety issue in the middleware.
ruby-gempdftransformpdfkitwkhtmltopdf
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Daniel Bernier - Owner, Piano Technician at Beach Glass Pianos