Aircall is a unicorn, AI-powered customer communications platform used by 22,000+ companies worldwide to drive revenue, resolve issues faster, and scale customer-facing teams. We're redefining customer communications by bringing voice, SMS, WhatsApp, and AI together into one seamless workspace.
Aircall is headquartered in Paris, our European HQ, with a strong North American presence anchored in Seattle, our North American HQ, and teams across Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. We've built a product customers love and a business that's scaling quickly, backed by world-class investors and driven by rapid AI innovation across multiple product lines.
At Aircall, you'll join a company in motion. We're customer-obsessed, data-driven, and focused on delivering meaningful outcomes. The Team:Communications Platform is the part of Aircall that makes a call connect, a message arrive and a number work. Every product Aircall sells, from the Workspace to our AI voice and messaging agents, runs on it. Aircall is becoming an AI-native company, and the systems we built for humans on web and mobile now have to serve AI agents as first-class users and participants. You are based in Communications Platform, but at this level your influence is company-wide: the decisions you make shape how every other engineering team builds on voice and messaging. Setting technical strategy,Define and drive the target architecture for the platform, write it down, get it adopted, and keep it honest as reality changes.
Align it with where the business and the product are going.
Raising the bar, Set quality standards in architecture, security and DevOps, and make the right way the easy way.




Lead the TDD and ADR process on the decisions that span teams.
Leading on reliability, Own the long-term reliability and performance strategy for a tier-1 platform: target architecture, resilience and DR posture, SLOs and the KPIs that show up in roadmap trade-offs.
Making AI compound, Identify where AI can fundamentally change our architecture, our engineering workflows and our cost structure.
Growing people, Mentor and coach engineers and engineering leaders across teams, and help shape what senior technical growth looks like here.
Experience inreal-time communications— such as VoIP, SIP, WebRTC, media, messaging, or carrier networks — is a strong plus.
You influence and persuade throughclear writing, strong technical judgment, and sound reasoning, rather than seniority.
Strong cloud experience, ideally withAWS, together with hands?your influence comes from the quality of your technical judgment, communication, and leadership.
Other engineering teams are able tobuild on the platform more easily, with fewer escalations and dependencies required to move forward.level engineering roles . learning environment, entrepreneurial and strong team spirit45+ Nationalities: cosmopolite & multi-cultural mindsetCompetitive salary package & benefitsDE&I; Statement:At Aircall, we believe diversity, equity and inclusion – irrespective of origins, identity, background and orientations – are core to our journey.
We're committed to ensuring that everyone not only has a seat at the table but is valued and respected at it by providing equal opportunities to develop and thrive.
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📌 Senior Principal Software Engineer (España)
🏢 Aircall.io
📍 España