Caleb Roseland
Senior Software Design Engineer at Mattermost
Minnesota, United States
Summary
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RockstarCaleb Roseland is a Senior Software Design Engineer with 11 years of experience building web and mobile applications from Minnesota, currently advancing Mattermost’s cross-platform collaboration products. He is a full‑stack contributor who blends front-end React work—improving accessibility, UI components, and styled-components—with backend Go changes and WebSocket event enhancements. Caleb has notable open-source impact on Mattermost’s mobile apps and playbooks plugin, focusing on iOS React Native improvements, deep linking, and right‑hand sidebar UX. His background ranges from hands‑on hardware and IT support to coordinating engineering teams, giving him a practical, user-centered approach to shipping reliable features. Colleagues value his attention to test coverage and incremental refactors that improve maintainability while enhancing user experience.
11 years of coding experience
9 years of employment as a software developer
Stackoverflow
93reputation
12kreached
2answers
1question
Github Skills (36)
unit-testing10
e2e-testing10
javascript10
ios10
react-native10
e2e-test10
testing10
typescript10
user-interface10
styled-components10
go10
front-end-development10
typescript-types10
e2e10
golang10
Programming languages (8)
Github contributions (5)
mattermost/mattermost-plugin-playbooks
Jul 2021 - Dec 2022
Mattermost Playbooks enable reliable and repeatable processes for your teams using checklists, automation, and retrospectives.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:592 reviews, 127 commits, 263 PRs in 1 year 5 months
Contributions summary:Caleb primarily contributed to the development of the RHS (Right-Hand Sidebar) and its related UI components, including the implementation of new features and modifications to existing ones. They focused on front-end development, incorporating React, styled-components, and potentially TypeScript to create and style the UI. The work involved integrating with the Mattermost platform and addressing various styling and display issues to enhance the user interface.
automationmattermost
mattermost/mattermost-webapp
Dec 2019 - Jan 2023
Archived web app of Mattermost. Moved to the monorepo: https://github.com/mattermost/mattermost
Role in this project:Front-end Developer
Front-end DeveloperContributions:566 reviews, 103 commits, 128 PRs in 3 years 1 month
Contributions summary:Caleb primarily contributed to the front-end development of the Mattermost web application, focusing on fixing accessibility issues and enhancing the user interface. They addressed axe rule violations related to lists and list items in account settings, using divs and sections. The user also upgraded TypeScript and added optional-chaining and nullish-coalescing operators, refactored youtube utilities and increased test coverage. In addition, they implemented and updated components for thread footers and adjusted CSS styling.
mattermostmonorepo
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