Justin Camerer
Searsmont, Maine, United States
Summary
👤
Senior🎓
Top SchoolJustin Camerer is a technical lead and senior full-stack engineer with nearly two decades of experience building SaaS products from early-stage beginnings through high-growth scale. He specializes in Ruby and TypeScript, with deep hands-on work across backend systems, CI/CD, billing, integrations, workflow automation, and AI-powered features that turn meeting recordings and telemetry into actionable outputs. Justin has repeatedly led small teams and worn many hats—mentoring engineers, shaping product requirements, running customer conversations, and guiding cross-functional launches at companies like FireHydrant and Atlassian. His open-source contributions include implementing payment gateway integrations for Active Merchant and improving editor motion features in atom-vim-mode-plus, reflecting a pragmatic focus on both reliability and developer ergonomics. Based in Searsmont, Maine, he combines startup grit with production-grade engineering discipline and a knack for turning ambiguous problems into shippable solutions.
18 years of coding experience
17 years of employment as a software developer
Bachelor of Science - BS, Computer Science, Bachelor of Science - BS, Computer Science at Southern Illinois University Edwardsville
Github Skills (10)
atom-editor10
vi10
unit-testing10
vim10
activemerchant10
payment-integration10
payment-gateway10
coffeescript10
ruby10
javascript8
Programming languages (7)
Github contributions (5)
activemerchant/active_merchant
Dec 2008 - Jun 2009
Active Merchant is a simple payment abstraction library extracted from Shopify. The aim of the project is to feel natural to Ruby users and to abstract as many parts as possible away from the user to offer a consistent interface across all supported gateways.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 commits in 5 months
Contributions summary:Justin primarily focused on implementing a new payment gateway, "Sallie Mae," for the Active Merchant library. Their commits involved creating the gateway class, defining supported features like authorization and purchase, and implementing the necessary methods to interact with the payment processor. Furthermore, the user wrote unit and remote tests to validate the gateway's functionality, demonstrating a focus on both implementation and testing. This work involved integrating with a third-party payment service.
ecommerceaimadyenpayment-processingpayment
t9md/atom-vim-mode-plus
May 2014 - Jun 2014
vim-mode improved
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:8 commits, 1 issue in 7 days
Contributions summary:Justin's commits primarily focused on enhancing the `atom-vim-mode-plus` repository by implementing and refining various Vim-like motion features. They addressed issues related to vertical cursor movements, ensuring column position retention. Additionally, the user contributed to the codebase with operator implementations, test specs, and general code cleanup tasks. These changes suggest a focus on improving Vim-like keybindings and functionalities within the Atom editor.
vim-modevimimprovedvim-plugincamelcase
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