Senior Software Engineer Backend/AI - Portugal

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 aSenior BE & AI Engineer, you will be responsible for thedesign, 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 dayjob.

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
• Propose innovative solutions based onAI 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

• 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 willhave 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, arecore 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 canenrich 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 -- providingequal opportunitiesto develop and thrive.

We will constantly challenge ourselves to make sure that we live up to our ambitions around diversity, equity and inclusion, andkeep this conversationopen because we realize that we have work to do and much to learn.

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