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Social network you want to login/join with: col-narrow-left Aircall Madrid, Spain Other - Yes col-narrow-right 3 12.06.2025 27.07.2025 col-wide Aircall is a place where voices are valued. Backed by over $220 million of investment since 2015, we create technology that fuels accessible, transparent, and collaborative communication to empower our base of 18,000+ customers (and growing) to make authentic, human connections. Conversation is a cornerstone of our culture. Wherever our people find themselves in the Aircall world — Paris, New York, San Francisco, Sydney, Madrid, London, Berlin, or at home — everyone has a voice that is valued. Whatever your background, wherever you're from, we want you to join the conversation. Let's talk. We are looking for engaged and passionate Senior Software 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, best practices, evangelization, and mentoring within your team and across Engineering will be part of your daily responsibilities. Quality, excellence, and agility drive our delivery processes, and you will help us improve these areas. Using NodeJS and TypeScript back-end stacks, hosted on AWS, we build resilient services that integrate with our customers' critical tools (CRM, Helpdesk, E-Commerce, etc.). On the Authentication & Authorization team, we work with SAML, SSO, OAuth, granular permission systems, and GraphQL as Backend for Front-end (BFF). Our architecture is serverless, based on AWS services such as Lambda, Cognito, SNS, SQS, DynamoDB, ApiGateway, etc. 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, test, and deploy applications and systems, • Participate in requirements analysis, solution design, architecture, and end-to-end delivery of key modules to provide business solutions, • Optimize product and platform performance and monitor live site metrics, • You have at least 7+ years of experience in back-end development, using TypeScript & NodeJS, focusing on security, scalability, availability, and performance, • You have extensive experience with AWS in a production environment, preferably for high-volume, high-availability services, and understand how to design, deploy, and optimize on AWS, • You are rigorous with code quality and engineering best practices (testability, maintainability), familiar with tools such as Jira, Confluence, GitLab, GitHub, etc., • You practice Clean Code, Clean Architecture, TDD, BDD, and CI/CD methodologies, • You have effective communication skills and can collaborate with diverse roles Why join us? • Significant growth and opportunities, • Our people matter; work-life balance is prioritized, • Fast-learning environment with strong team spirit, • Diverse, multicultural team with 45+ nationalities #J-18808-Ljbffr