Backend Software Engineer (AI)

TL;DR

Backend Software Engineer (AI): Building and optimizing backend services for AI-powered product features with an accent on productionizing predictive models and LLM capabilities. Focus on designing scalable APIs, ensuring system reliability, and integrating intelligent automation into complex financial workflows.

Location: Must be based in or able to work from Paris, London, or Barcelona (Hybrid)

Company

hirify.global is a leading AI-powered spend management and procurement platform that simplifies company spending, payment cards, and accounting automation for businesses.

What you will do

• Design and operate backend services that power AI-driven and ML-native product features.
• Partner with ML Engineers to productionize predictive models and LLM-driven capabilities.
• Translate predictive logic into reliable backend behaviors with strong standards on latency and security.
• Build reusable service layers to integrate intelligent features across multiple product flows.
• Instrument services with observability tools to ensure production readiness and maintainability.
• Collaborate with cross-functional teams to turn ambiguous ideas into concrete, measurable product implementations.

Requirements

• Significant experience in backend software engineering within production environments.
• Strong proficiency in TypeScript and Node.js.
• Fluent in written and spoken English.
• Experience designing APIs and service layers for complex product workflows.
• Understanding of distributed systems, async processing, and operational reliability.
• Must be based in or able to work from Paris, London, or Barcelona.

Nice to have

• Experience productionizing ML-backed features like classification, recommendation, or forecasting.
• Experience integrating LLM-backed capabilities into product workflows.
• Familiarity with evaluation patterns for AI-powered features.
• Experience in SaaS, fintech, or regulated environments.

Culture & Benefits

• Flexible hybrid work policy with regular in-person collaboration.
• Latest Apple equipment provided.
• Access to Moka.care for mental health and wellbeing.
• Location-specific benefits including health insurance, wellness allowances, and meal vouchers.
• Collaborative, trust-based culture focused on ownership and growth.

Hiring process

• HR screening call.
• Discussion with the Hiring Manager.
• Technical interview, live coding, and/or system design.
• Final interview with leadership.