Senior Software Engineer Backend / AI - Madrid

Aircall Madrid, Community of Madrid, Spain

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Aircall Madrid, Community of Madrid, Spain

Join to apply for the Senior Software Engineer Backend / AI - Madrid role at Aircall

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

As a Senior BE & AI Engineer , you will be responsible for the design, development, deployment, and operation of business-critical AI features that add customer value on top of Voice.

Previous experience implementing AI features is a must. 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, ...).

Your mission @ Aircall :

Participate in requirements analysis to help with providing the right technical and business solutions for our customers

Propose innovative solutions based on AI landscape trends

Have key responsibilities within the design, architecture, and end-to-end delivery of AI 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

A little about you :

AI experience is a must for this position : Knowledge about LLMs (GPT, Mistral, Llama, Claude, etc...) and experience developing with them (usage, prompting, etc), AI frameworks (Langchain, LlamaIndex, Auto Gen, etc), AI architectures (RAG, reranking, etc)

You have at least 5+ years of experience in back-end development in a large scale, preferably typed language (Typescript / Node.js , Java, Scala), with experience in Javascript, Ruby, or Python, with a focus on delivering for security, scalability, availability, and performance

Nice to have : Ideally you will have worked 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

Security is at the forefront of your mind in everything that you do

Aircall is constantly moving forward. We're building new roads to complete our journey, and we're taking people with us who have the same builder mentality.

Let's 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.

We're 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 we're 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 & benefits

DE&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. We're working to create a place filled with diverse people who can enrich and learn from one another. We're 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.

Want to know more about candidate privacy? Find our Candidate Privacy Notice here.

Seniority level Seniority level Mid-Senior level

Employment type Employment type Full-time

Job function Job function Engineering and Information Technology

Industries Software Development

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