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. class investors and driven by rapid AI innovation across multiple product lines. At Aircall, you'll join a company in motion. obsessed, data?The Team: The Programmable Communications Team is responsible for all technology aspects related to the voice and messaging infrastructure of Aircall products. quality and real?Our shared ambition is to provide the best voice and messaging infrastructure for Aircall customers and help other Aircall engineering teams deliver as much value as possible on top of it. Design and build highly scalable and secure backend services, ensuring high availability, performance, and security to support high?volume workloads Design and maintain robust CI pipelines (GitLab CI), release workflows, and automated testing to implement continuous delivery best practices in production environments Debug and optimize the application's performance, focusing on memory leaks and CPU usage in a desktop environment, critical for maintaining a high audio quality during calls Operate, monitor, and optimize distributed systems in AWS production environments Lead initiatives to improve the reliability, resilience,



and performance of our distributed systems, from design through production operation Apply a deep understanding of RTC / VoIP architectures and protocols Participate in an on?call rotation to respond to critical system issues

Qualifications:
You have solid experience building backend services with a strong focus on security, scalability, availability, and performance You have strong knowledge of CI/CD pipelines, infrastructure?as?code, automated testing, and deployment best practices You have hands?on experience with GitLab CI/CD (or similar), release workflows, code reviews, and continuous delivery in production You are proficient in working in containerized environments (Docker, Kubernetes) You have experience operating and optimising systems in AWS production environments, ideally supporting high?source SIP/RTC technologies such as FreeSWITCH, Kamailio, Asterisk, or similar You have exposure to media servers, signalling flows, or real?time communications debugging You stay current with modern development practices and tooling, including AI?assisted development tools, to maximize your productivity You have strong communication skills and fluency in English (written and spoken) You are autonomous, proactive, and comfortable owning features end?to?end You are pragmatic and have a willingness to experiment, iterate, and continuously improve systems Why join us? cultural mindset Competitive salary package & benefits DE& I Statement: At Aircall, we believe diversity, equity and inclusion – irrespective of origins, identity, background and orientations – are core to our journey.

📌 Software Engineer (España)
🏢 Aircall
📍 España