Senior Software Engineer, Outbound Capabilities Madrid Office 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. Users build campaigns from contact lists, the system dials automatically for agents (human or AI Voice Agent), and outcomes flow back to CRMs and analytics. The product is live with hundreds of companies and growing fast. In this role you own how it's built and how it runs. Set the technical direction of the team: architecture, standards, and the trade-offs between speed and quality Lead design and delivery of the team's biggest initiatives, from proposal to production, and break them into work the team can ship in small steps Stay hands-on: write and review production code across the backend and the React frontend Make AI a core part of how the team builds: use AI coding assistants and agents every day, shape workflows that keep quality high, and help others adopt them well Bring AI into the product where it helps customers,



working with the AI Voice Agents team on campaigns run by AI agents Raise the bar for the team through code review, design reviews, pairing and coaching Calls & Routing, Number Management, AI Voice Agents, Integrations and Data Platform TypeScript and Node.js, production-grade React, owning components end-to-end, not just familiarity AWS and cloud architectures (we run on EKS) GraphQL APIs (AppSync) and event-driven patterns (SQS/SNS workers) Observability with Datadog or similar: designing metrics, monitors and dashboards, not just reading them Using AI coding assistants or agents (e.g. Claude Code, Cursor, Copilot) daily to design, build, test and debug, with a clear way of checking what they produce It would be great if you also have Telephony or dialer experience (SIP, call routing), or CRM integrations (HubSpot, Salesforce) Twilio calling: Building AI or LLM features in production: prompt and tool design, evaluations, and monitoring quality and cost 8+ years of professional software engineering, including time leading the technical work of a team Genuinely full-stack: you can own a backend service and its React frontend end-to-end AI is part of how you design, code, test and debug every day. You know where it helps and where it fails, how you check its output, and you help others adopt it well You lead by influence: engineers follow your technical direction because it's clear and well reasoned Comfortable in a remote/hybrid organisation and happy to get together from time to time 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. If you would like more information about how your data is processed, please contact us. #

📌 Senior Software Engineer (España)
🏢 Aircall.io
📍 España