Senior Fullstack Engineer

Senior Fullstack Engineer - Remote from Spain Join to apply for the Senior Fullstack Engineer - Remote from Spain role at Aircall Aircall is a unicorn AI-powered customer communications platform used by 22,000+ companies worldwide to drive revenue, faster resolutions, and scale. We’re redefining what a customer communications platform can be—by combining voice, SMS, WhatsApp, and AI into one seamless workspace. Our momentum comes from a simple but powerful idea: help every customer-facing team work smarter, not harder. Aircall’s AI Voice Agent automates routine calls, AI Assist streamlines post-call tasks, and AI Assist Pro delivers real-time guidance that helps people do their best work. The result—companies grow revenue, deliver faster resolutions, and scale service. We’ve built a product customers love and a business that scales fast. Aircall operates in nine global offices (Paris, New York, San Francisco, Sydney, Madrid, London, Berlin, Seattle, and Mexico City), and is backed by world-class investors. Our teams are shipping AI innovation faster than ever and expanding across new product lines and markets. At Aircall, you’ll join a company in motion—ambitious, profitable, and product-driven—where impact is visible, decisions are fast, and growth is real. 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. We are looking for an engaged and passionate Senior Software Engineer to join our growing Communication Platform department and be part of the Number Management team. You will be responsible for the design, development, deployment, and operation of business-critical features that add customer value. 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 Typescript and Ruby back-end stacks, appropriate for each requirement, but always hosted on AWS , we build added value and resilient services on top of voice and AI capabilities, and fully integrated with our customers' business critical tools. Key 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 Review, 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 Team Environment Join a small, collaborative team with a mindset that values autonomy and proactivity while ensuring you are never alone. The team is spread between France, Spain, India and Portugal, promoting a diverse and inclusive work culture. Sharing and collaboration are key within the team, encouraging open communication and teamwork to achieve the best outcomes. Requirements You have at least 5+ years of experience in backend development with preferably a typed language (Typescript/ Node.js , Java, C#) with a focus on delivering for scalability, availability, security and performance You have at least 2+ years of experience working on frontend applications, preferably with React, but experience with Angular is also valued. You have experience with serverless architectures, microservices or distributed systems. You 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 Security is at the forefront of your mind in everything that you do 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 are strongly committed to hiring a diverse and multicultural team and we encourage applications from traditionally underrepresented backgrounds. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us. Seniority Level Mid-Senior level Employment Type Full-time Job Function Engineering and Information Technology Industries Software Development #J-18808-Ljbffr