Senior Backend Engineer - Madrid

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 inAbout the role :As a Senior Backend Software Engineer, you will be responsible for the design, development, deployment, and operation of business-critical features that add customer value on top of voice.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 a variety of 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, ...)., * Participate in requirements analysis to help with providing the right technical and business solutions for our customers

• Have key responsibilities within the design, architecture, and end-to-end delivery of key modules
• Write clean scalable code and test and deploy applications and systems
• Revise, update, refactor, and debug code
• Be part of an engineering organization delivering high quality, secure, voice solutions to Aircall clients
• Involvement in product and platform performance optimization and live site monitoring
• Participate in an on-call rotation to respond to critical system issues and ensure continuous system reliability
• Mentor team members

• You have at least 6+ years of experience in back-end development in a large scale, typed language, with experience in Typescript, with a focus on delivering for security, scalability, availability, and performance
• You will have worked extensively with AWS in a production environment and understand how to design for, deploy on and get the best out of, the environment and services provided by Amazon
• You can talk easily and spontaneously about most of the offerings on AWS, when to use them, and how, and can explain to junior engineers.
• You have experience working with serverless services using infrastructure as code like CloudFormation or Terraform.

Aircall is the worlds 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, * And last but not least, if you have experience working with GraphQL it will be a huge plus!Aircall is constantly moving forward. Were building new roads to complete our journey, and were taking people with us who have the same builder mentality.Lets grow together: Aircall is a place for those who dare to be bold and seek responsibility, excellence, and the opportunity to push themselves to new heights.Were creating a place where great people trust one another and thrive together.People flourish at Aircall and now is the time to be part of the team and the journey were on.Why join us? Key moment to join Aircall in terms of growth and opportunities ️ Our people matter, work-life balance is important at Aircall Fast-learning environment, entrepreneurial and strong team spirit 45+ Nationalities: cosmopolite & multi-cultural mindset Competitive salary package & benefitsDE&I Statement: At Aircall, we believe diversity, equity and inclusion irrespective of origins, identity, background and orientations are core to our journey. We pride ourselves on promoting active inclusion within our business to foster a strong sense of belonging for all. Were working to create a place filled with diverse people who can enrich and learn from one another. Were 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. We will constantly challenge ourselves to make sure that we live up to our ambitions around diversity, equity and inclusion, and keep this conversation open. Above all else, we understand and acknowledge that we have work to do and much to learn.