Design and implement production-grade Python services with clean architecture and strong engineering discipline.
Architect scalable, distributed systems using Domain-Driven Design (DDD) principles.
Integrate with external SaaS systems (CRMs, dialers, meeting tools, OAuth providers).
Optimize performance, latency, cost, and reliability of AI-driven systems.
Build and orchestrate LLM-powered agents (planning, reasoning, tool usage, memory).
Develop internal frameworks to manage: Agent coordination, Tool execution, Memory layers, Event-driven workflows.
Work closely with AI engineers, product, and founders to transform complex sales workflows into autonomous processes.
Use AI coding assistants effectively and experiment with AI-augmented development workflows.

7+ years of strong backend engineering experience.
Advanced Python expertise (async, typing, architecture patterns, testing)
Experience designing scalable distributed systems.
You design thoughtful, well-architected systems and write clean, high-quality code, with a focus on performance and long-term maintainability.
Experience with GCP (preferred) or AWS.
Mindset: You’re energized by building systems that can reason and take action—not just generate responses.
You actively leverage AI coding assistants and are driven to push the boundaries of AI-augmented engineering.
You thrive in fast-paced startup environments where ownership is real and impact is immediate.
Strong communication skills are essential—you’ll collaborate closely with Product, Design, and Business stakeholders, and stay deeply connected to our users and the problems they’re trying to solve.
Fluency in English is required; Spanish is a plus.

Competitive salary package & benefits
Work-life balance is important at Aircall
Fast-learning environment, entrepreneurial and strong team spirit
DE&I Statement: At Aircall, we believe diversity, equity and inclusion – irrespective of origins, identity, background and orientations – are core to our journey. We pride ourselves on promoting active inclusion within our business to foster a strong sense of belonging for all. We’re strongly committed to hiring a diverse and multicultural team and we encourage applications from traditionally underrepresented backgrounds.

Senior Software Engineer – Backend

Key skills