Sr. Software Engineer – API & Auth Platform

Betterment·Betterment HQ - New York City·Posted 23 September 2026

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About the role

About Betterment Betterment is a leading, technology-driven financial services company that offers investing, savings and retirement solutions for retail investors and investment advisors as well as financial wellness solutions, including a 401(k) for small and medium-sized businesses. Our team is passionate about our mission, to empower people to build wealth with confidence and ease. We're headquartered in NYC and offer hybrid NY-based positions (four days/week in-office, with no required office days during the summer and winter holidays). About the Role The API & Auth Platform team enables product teams across Betterment to build and operate APIs quickly, enjoyably, and securely. As Sr Software Engineer, you will work with a team of senior/staff engineers stewarding our shared GraphQL API frameworks, authentication and access control systems, and internal tooling platform. You will help build core pieces of the GraphQL API frameworks powering our customer-facing web and mobile applications, working closely with engineering leadership. You will also collaborate with operations, customer support, and compliance partners to ensure our internal APIs let teams operate Betterment…

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