Full Stack Engineer (Python/React/Identity)

Squarespace is looking for a frontend-focused engineer who enjoys owning features end-to-end. While your expertise is building exceptional user experiences, you're comfortable working across the stack to deliver secure, scalable identity solutions. You will join the Identity & Access Management (IAM) team, where we architect the mission-critical authentication, authorization, and account security frameworks that safeguard millions of users worldwide. We own the systems powering sign-in, sign-up

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. Affirm is building the next generation of customer identity and authentication. This role is a hands-on engineering position inside Information Security, focused on designing and shipping core CIAM capabilities that protect customers and support growth. You will build and operate backend services that power registration, lo

CoreWeave is The Essential Cloud for AI . Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, CoreWeave became a publicly traded company (Nasdaq: CRWV) in March 2025. Le

Job Title: C13 Senior Python Backend Developers Location: Rutherford, NJ Duration: Temp to Hire - 6 months Job ID: 406502 About TSR TSR is a trusted staffing and workforce solutions partner with more than 50 years of experience delivery highly qualified talent to support clients' most critical business and technology initiatives. Through a disciplined approach to sourcing, candidate vetting, and delivery, TSR helps organizations scale teams quickly while maintaining quality and reliability. TS