Senior Full-Stack Engineer, Checkout

Mailchimp is hiring a Senior Full-Stack Engineer, Checkout to join our fully remote team in the United States. As a Senior Full-Stack Engineer, Checkout, you'll design, build, and ship reliable software that scales to millions of users. This is a part-time, work-from-home role open to candidates across the US (Remote — US (PST)). About the role You'll design, build, and ship reliable software that scales to millions of users, partnering with a friendly, distributed team across US time zones. We care about outcomes over hours and give you the autonomy, tools, and support to do your best work from home. What you'll do: • Write clean, well-tested, and documented code • Improve performance, reliability, and developer experience • Collaborate with product and design on new initiatives • Review pull requests and mentor teammates • Develop, test, and maintain features across the stack What we offer: • Home office and wellness stipends • Comprehensive medical, dental, and vision coverage • Flexible working hours across US time zones • Annual learning and professional development budget • Paid parental leave How we work We're remote-first and async-friendly. Expect clear documentation, regular feedback, supportive teammates, and real opportunities to grow your career. Mailchimp is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for everyone.

Minimum qualifications: • 5+ years of relevant experience • Solid understanding of data structures, APIs, and databases • Proficiency in one or more modern languages (TypeScript, Go, Python, or Java) • Strong communication in a remote, async environment • Experience with version control and CI/CD Nice to have: • Experience in a fast-paced, high-growth environment • Comfort communicating clearly and proactively in writing