Senior Full-Stack Engineer: Scalable SaaS & AI

Company: Firstup
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Job Description:

Firstup, the world’s first intelligent employee experience platform, is seeking a Senior Full Stack Engineer. You will design and deliver large-scale, multi-tenant cloud services — with a relentless focus on availability, fault-tolerance, and elegant architecture.

You’ll set the bar for engineering quality and help elevate those around you. You will own frontend, backend, and data layers, collaborate with Product and Design to translate requirements into intuitive UI, and champion shift-left

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Posted: November 4th, 2026