Senior Software Engineer - Backend (AI)

TL;DR

Senior Software Engineer - Backend (Python/AI): Building an AI Orchestration Layer for autonomous sales workflows with an accent on LLM-powered agents and distributed systems. Focus on designing agentic patterns, optimizing AI-driven performance, and integrating complex SaaS ecosystems.

Location: Hybrid (Madrid, Spain)

Company

hirify.global is an AI-powered customer communications unicorn redefining how companies manage voice, SMS, and WhatsApp through a seamless workspace.

What you will do

• Design and implement production-grade Python services using Domain-Driven Design (DDD) principles.
• Architect scalable distributed systems and integrate external SaaS systems like CRMs and dialers.
• Build and orchestrate LLM-powered agents, focusing on planning, reasoning, tool usage, and memory.
• Develop internal frameworks for agent coordination, tool execution, and event-driven workflows.
• Optimize the performance, latency, cost, and reliability of AI-driven systems.
• Collaborate with AI engineers, product managers, and founders to automate complex sales workflows.

Requirements

• 7+ years of professional backend engineering experience.
• Advanced Python expertise, including async, typing, and architectural patterns.
• Proven experience designing scalable distributed systems.
• Experience with Google Cloud Platform (GCP) or AWS.
• Fluency in English is required.
• Must be able to work from the Madrid office (Hybrid).

Nice to have

• Proficiency in Spanish.

Culture & Benefits

• Competitive salary package and benefits.
• Strong focus on work-life balance.
• Fast-paced, entrepreneurial environment with a strong team spirit.
• Cosmopolitan culture with a team of 45+ nationalities.
• Opportunity to join a scaling unicorn during a key growth phase.