Will Lachance is a Staff Software Engineer with 23 years of experience building production-grade systems at the intersection of energy/climate tech and product engineering. Currently technical lead for partner integrations at Voltus, he combines full-stack fluency with backend and DevOps strengths honed at Mozilla where he led telemetry/docs platforms and real-time release-quality tooling. An active open-source contributor, he’s improved search and documentation UX in Sphinx and helped make Python run reliably in the browser via Pyodide build and benchmarking work. Will brings a pragmatic, cross-disciplinary approach—comfortable from CI and build systems to front-end data visuals—and a long history of mentoring and shipping tools that improve developer productivity. Based in Toronto, he’s interested in technical communication and the energy transition, blending domain knowledge with hands-on engineering.
23 years of coding experience
14 years of employment as a software developer
Glebe Collegiate
Hon Bsc, Philosophy, Computer Science, Hon Bsc, Philosophy, Computer Science at University of Toronto - University of St. Michael's College
A system for managing CI data for Mozilla projects
Role in this project:
Back-end Developer & Automation Engineer
Contributions:1031 commits, 1090 PRs, 1214 pushes in 4 years 5 months
Contributions summary:Will contributed significantly to the build and deployment infrastructure, evidenced by commits related to build scripts and Docker configurations. They also addressed a bug concerning fixing links within the perfherder compare tool. The user's work also involved modifications to core files, like in setup, and tests, indicating involvement in software quality assurance. Their efforts included code refactoring and fixing of existing issues.
A library optimized for concise and principled data graphics and layouts.
Role in this project:
Front-end Developer
Contributions:3 releases, 69 commits, 89 PRs in 2 years 4 months
Contributions summary:Will primarily focused on enhancing the functionality and usability of the metrics-graphics library. Their work involved fixing bugs related to linked rollovers and time format configurations, particularly when dealing with custom accessors and x-axis data that were not dates. They also contributed to improving the chart's behavior when there's a single data point. Additionally, the user updated the library to version 2.13 and made improvements to the example site.
optimizedgraphicslayouts
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Will Lachance - Staff Software Engineer at Voltus, Inc.