Aircall is the world’s leading integrated customer communications and intelligence platform for growing businesses. Trusted by over 20,000 companies worldwide, Aircall unifies voice and digital channels into one seamless platform, offering one-click integrations with leading CRMs and over 100 business tools. With real-time, AI-powered insights and feedback, AI agents, and automation, we help sales and support teams save time on routine tasks, uncover opportunities, and deliver exceptional customer experiences. With a global team of 600+ across nine offices, Paris, New York, San Francisco, Sydney, Madrid, London, Berlin, Seattle, Mexico City, Aircall is transforming how businesses connect with their customers, driving smarter conversations, deeper relationships, and measurable success.

How We Work at Aircall: At Aircall, we believe in customer obsession, continuous learning, and delivering extraordinary outcomes. We value open collaboration, taking ownership, and making smart, informed decisions with speed and precision. If you thrive in a fast-paced, team-driven environment where curiosity, trust, and impact matter, you'll fit right in

We are looking for engaged and passionate SeniorSoftware Engineer to join our growing engineering department and be part of our Authentication team in EMEA.

As a Senior Software Engineer , you will be responsible for the design, development, deployment, and operation of business-critical features that add customer value. Operational excellence, metrics, observability and best practices, evangelization, and mentoring in your team and across the whole of Engineering will be part of your day to day job.

Quality, excellence, and agility drive our delivery processes and you will help us level these up. Using NodeJS and Typescripts back-end stacks, appropriate for each requirement, but always hosted on AWS, we build added value and resilient services on top of voice and fully integrate with our customers’ business critical tools (CRM, Helpdesk, E-Commerce, …).

On Authentication & Authorization team we are working with SAML, SSO, OAuth 2.0, granular permission system and GraphQL as Backend for Front-end (BFF). We have serverless architecture based on AWS services (Lambda, Cognito, SNS, SQS, DynamoDB, ApiGateway, ...)

Your mission @ Aircall:

• Be part of an engineering organization delivering high quality, secure, and scalable solutions to Aircall clients
• Write clean scalable code using Typescript / Node.js , test and deploy applications and systems
• Have key responsibilities within the requirements analysis, solution design, architecture, and end-to-end delivery of key modules in order to provide business solutions
• Involvement in product and platform performance optimization and live site monitoringMentor junior team members
• Participate in an on-call rotation to respond to critical system issues and ensure continuous system reliability

A little about you:

• You have at least 7+ experience in back-end development, using TypeScript & NodeJS, 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).
• You are rigorous with code quality and other engineering best practices (testability, maintainability), and are accustomed to using systems such as Jira, Confluence, GitLab, GitHub, etc.
• Clean Code, Clean Architecture, Test Driven Development, Behaviour Driven Development and Continuous Integration/Deployment are the way you design, develop and release software.
• You possess effective and proactive communication skills, and can collaborate with different profiles and roles
• A proven experience with Domain Driven Design would be a plus