Aircall is hiring a

Senior Software Engineer Backend/AI

Madrid, Spain
Full-Time
Remote
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, 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.

As a Senior Backend 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. 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, …).


*** This position is based in Madrid. Candidates willing to relocate to  Spain are welcome to apply *** Note: we do not sponsor visa.

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 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
  • Mentor team members

A little about you:

  • 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
  • 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)
  • 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

We know that success comes from smart work and deserves to be recognized and rewarded

We value people who are bold, ambitious, collaborative and customer-centric. We’re a global community growing together.

If you love a good challenge, enjoy solving meaningful problems, and want to be a part of one of the fastest-growing B2B startups, then Aircall is the company you are looking for!
Aircall offers a unique work environment and the chance to collaborate with diverse teammates across continents. We'll provide freedom and tools to allow you to thrive at your best, and foster an environment you can do it in.

Why join us?

🚀 Key moment to join Aircall in term 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 (health coverage, lunch, commute, sports)

DE&I Statement: 
At Aircall, we believe diversity, equity and inclusion, irrespective of origins, identity, background and orientations, are core to our Aircall journey. 
We promote active inclusion to foster a strong sense of belonging which is one of our main strengths as a business. We strive to assemble diverse people that can enrich and learn from each other. We pledge to make sure everyone not only has a seat at the table but is valued at the table -- 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 because we realize that we have work to do and much to learn.

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