Backend Engineer (AI)

TL;DR

Backend Engineer (AI): Architecting and building the frameworks that power their AI service layer with an accent on scaling high-speed experiments to a global user base. Focus on optimizing service latency, real-time performance, and designing new interaction models beyond the traditional screen-tap paradigm.

Location: Must be based within a 60-minute commute of the London (Kings Cross & Farringdon) office. In-office role, 5 days a week.

Company

hirify.global exists to make tech feel exciting again by building a different kind of technology company that puts design, emotion, and human creativity at the heart of everything they do.

What you will do

• Architect and build the underlying frameworks and patterns that power their AI service layer, ensuring our high-speed experiments scale seamlessly to a global user base.
• Rapidly prototype and ship novel AI interfaces—from voice and chat to multi-modal interactions—that define the next generation of the Phone (3) and hirify.global OS experience.
• Translate experimental AI concepts into robust, production-grade applications using Node.js, Python, and Next.js.
• Bridge the gap between web services and hardware, working with our OS teams to blur the lines between mobile, web, and embedded surfaces.
• Optimise the feel of our services by obsessing over latency, real-time performance, and the micro-interactions that make a digital assistant feel responsive.

Requirements

• Technical Excellence: Bring battle-hardened experience in backend development with Node.js or Python, and you are comfortable navigating microservices and cloud-native infrastructure.
• A Drive to Own It: You thrive in ambiguity and don't wait for a ticket to be defined; you see the goal, grab the necessary API keys, and build the solution from scratch.
• AI Fluency: You have hands-on experience or a deep curiosity for LLMs, vector databases, and RAG systems, understanding the unique constraints of building with non-deterministic models.
• Design Sensibility: You care deeply about how things look and feel, knowing that the quality of the animation and the speed of the response are just as important as the algorithm itself.
• Cross-Platform Mindset: You think outside the browser and understand how web technologies can drive experiences on mobile and embedded systems.
• You must live within a 60-minute commute of your home office location.

Culture & Benefits

• Building better tech by moving fast.
• Direct collaboration and shared creative energy.
• Design flexibility around personal needs, but a focus on the magic that sparks when we’re all in the same room.