Senior Backend Engineer
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Senior Backend Engineer at phia: New York City, США; На місці; Старший спеціаліст; IT; Back End інженер. JobGrid adds normalized role facts, source context, and a path to the employer application page so candidates can compare the listing before applying.
- Location and workplace: New York City, США, На місці
- Role classification: IT, Back End інженер, Старший спеціаліст
- Source freshness: checked by JobGrid on 2026-05-29.
- Application path: candidates continue to the employer application page with non-personal referral tags.
As a Senior Backend Engineer, you’ll design, build, and scale core backend systems that power high-traffic consumer products and internal platforms. You’ll own foundational services and APIs, work on high-throughput distributed systems, and partner closely with product, ML, and engineering teams to deliver reliable, low-latency experiences at scale.
About PhiaPhia has raised $43M from Notable Capital, Khosla Ventures, and Kleiner Perkins to build the AI alignment layer for commerce. In under a year, Phia’s consumer shopping agent has surpassed one million users and partnered with 6,200+ retail brands, representing billions in annual gross merchandise volume. Each month, Phia drives millions of dollars in sales for brands and has achieved 11× revenue growth since launch.
In an era where AI vertical agents are reshaping every industry, commerce is on the verge of a complete transformation. Phia is reinventing shopping from a fragmented, impersonal experience into one that feels intelligent, trusted, and built around each user’s intent. This foundation of trust is our wedge to become the end-to-end shopping destination for the next generation of buyers.
Phia is a lean, high-ownership team building at startup speed. If you want to ship at high velocity and solve complex problems in consumer AI and commerce, this is the place to do it.
What You OwnDesign and build scalable backend services, APIs, and shared platform components
Own system architecture, performance, and reliability for core backend systems
Partner with product and ML teams to support data- and model-driven workflows
Improve observability, monitoring, and operational best practices
Drive technical decisions and contribute to long-term platform strategy
Raise the quality bar through code reviews, design discussions, and mentorship
5+ years of experience building and operating backend systems in production
Strong experience with APIs, databases, and distributed systems
Proficiency in at least one backend language and modern backend frameworks
Experience designing systems for scale, performance, and reliability
Strong ownership mindset and ability to work in fast-moving environments
Clear communicator who collaborates well across functions