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.Our momentum comes from a simple idea: help teams work smarter, not harder. Aircall’s AI Voice Agent automates routine calls, AI Assist streamlines post-call work, and AI Assist Pro delivers real-time guidance so people can do their best work. The result is higher revenue, faster resolutions, and teams that scale with confidence.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 ambitious, product-driven, and execution-focused, with visible impact, fast decisions, and real growth.How we work at Aircall : We’re customer-obsessed, data-driven, and focused on delivering meaningful outcomes. We value ownership, continuous learning, and thoughtful speed. If you thrive in a collaborative, fast-moving environment where trust and impact matter, you’ll feel at home here.Key Responsibilities

- Create, design, develop, test, and monitor your code in production autonomously and reliably
- Collaborate with product managers,



designers and other engineers to offer pragmatic solutions to real world problems and implement them end to end
- Work with your team to design high quality, secure, and scalablesolutions and be accountable for their execution
- Obtain a good understanding of the business to provide relevant solutions to users and clients
- Mentor and promote tech growth within the teams
- Stay up-to-date on new technologies and architectures, demonstrate good judgment in their potential applications

Qualifications

- A little about you:
- You have at least 7+ experience in back-end development, using TypeScript & NodeJS/Python/Ruby/Rails or other languages, with a focus on delivering for security, scalability, availability, and performance.
- You have worked extensively with AWS in a production environment, preferably for high volume / high availability services and understand how to design for, deploy on and get the best out of, the environment and services provided by Amazon).
- Experience working on frontend applications is a big plus, preferably with React.
- Value code simplicity, quality, performance and maintainability.
- Can design pragmatic & simple architectures to solve problems at scale.
- You possess effective and proactive communication skills, and can collaborate with different profiles and roles.

Our Tech Stack

- You do not need to be familiar with all of our technical stack or any specific functional area, but you have a strong willingness to learn and adapt quickly.
- Typescript/Node.js, Python, REST API/GraphQL APIs, Ruby/Rails, React AWS/Serverless or EKS, PostgreSQL, DynamoDB, OpenSearch, Redis

Why join us?

📌 Senior Software Engineer (Madrid)
🏢 Aircall
📍 Madrid