Taking technical ownership of an existing AI-enabled email development platform, the part-time Lead Email Systems Developer will improve its architecture, build scalable systems for high-volume email production, and support internationalized email programs, particularly for Chinese, Japanese, and Korean markets. Key responsibilities Own and scale the email development platform, defining its roadmap and improving production quality Build a modular email architecture in collaboration with marketing and engineering teams, ensuring efficient translation of designs into email-ready HTML Ensure reliable email rendering across major clients and establish QA workflows aligned with accessibility standards Required qualifications 6-8+ years of professional email development experience Advanced expertise in HTML, CSS, and MJML specifically for email development Production experience with Iterable and/or HubSpot Demonstrated experience building and maintaining email component libraries or reusable frameworks Experience supporting localized email programs, particularly for Chinese, Japanese, and/or Korean markets