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Senior Backend Engineer

Aircall· Engineering
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Hybrid (Madrid)Permanent Full Time EmployeePosted 4mo ago

About the role

Senior Backend Software Engineer responsible for design, development, deployment, and operation of business-critical features on top of voice, with focus on security, scalability, availability, and performance. Includes mentoring, on-call rotation, and collaboration across engineering teams to deliver high-quality, secure voice solutions integrated with customers’ tools.

Responsibilities

  • 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

Qualifications

  • 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
  • Security is at the forefront of your mind in everything that you do
  • And last but not least, if you have experience working with GraphQL it will be a huge plus

Skills

Required:Backend developmentTypescriptAWSServerless / IaC

Benefits

  • Competitive salary package & benefits
  • Fast-learning environment, entrepreneurial and strong team spirit
  • Work-life balance considerations implied by hybrid office model
Last updated Jul 1, 2026. Interested? Apply on the company site.
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About Aircall

AI-powered customer conversations made easy

Aircall is more than a business phone—it’s an integrated customer communications and intelligence platform. Achieve more with AI Agents, data-driven insights, and automation.

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