Aircall is a unicorn, AI-powered customer communications platform used by 22,000+ companies worldwide to drive revenue, resolve issues faster, and scale customer-facing teams. We’re redefining customer communications by bringing voice, SMS, WhatsApp, and AI together into one seamless workspace. Our momentum comes from a simple idea: help teams work smarter, not harder. Aircall’s AI Voice Agent automates routine calls, AI Assist streamlines post-call work, and AI Assist Pro delivers real-time guidance so people can do their best work. The result is higher revenue, faster resolutions, and teams that scale with confidence. Aircall is headquartered in Paris, our European HQ, with a strong North American presence anchored in Seattle, our North American HQ, and teams across Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. We’ve built a product customers love and a business that’s scaling quickly, backed by world-class investors and driven by rapid AI innovation across multiple product lines. At Aircall, you’ll join a company in motion. We’re ambitious, product-driven, and execution-focused, with visible impact, fast decisions, and real growth. How we work at Aircall: We’re customer-obsessed, data-driven, and focused on delivering meaningful outcomes. We value ownership, continuous learning, and thoughtful speed. If you thrive in a collaborative, fast-moving environment where trust and impact matter, you’ll feel at home here. About the role: This role is open to both Mid-Level and Senior Software Engineers. We are building a new team from the ground up to work on an ambitious new product in a fast-moving, competitive market. This product will leverage Aircall's core strengths in voice and AI to transform how sales teams operate—helping them work faster, smarter, and more effectively at scale. As one of the first engineers on this team, you will have significant ownership and influence over the technical direction and product development.  We are looking for engineers with a 0-to-1 mindset who are excited to build products from scratch and thrive in ambiguous environments, as well as a strong growth orientation that drives them to evolve alongside the team—whether that means deepening their technical expertise or eventually stepping into technical leadership and management roles as we scale. Key responsibilities: • Collaborate closely with product managers, designers, and other stakeholders to translate requirements into technical solutions. • Take ownership of key responsibilities within the design, architecture, and end-to-end delivery of features across the full stack. • Build and maintain frontend interfaces using React, and backend services using Node.js and TypeScript. • Write clean, scalable code, and test and deploy applications and systems. • Revise, update, refactor, and debug code to ensure optimal performance. • Participate in code reviews to maintain high code quality and share knowledge across the team. • Contribute to an engineering organization dedicated to delivering high-quality, secure voice solutions to Aircall clients. • Optimize product and platform performance, and actively engage in live-site monitoring. • Participate in an on-call rotation to respond to critical system issues and ensure continuous system reliability. • Prioritize security, keeping it at the forefront of everything you do. Qualifications: • At least 3 years of professional experience in full-stack development. • Proven experience with AWS services and cloud-based architectures. • Deep understanding of software development practices, scalable system architecture, security best practices, and cloud-based platforms. • Exceptional analytical and problem-solving skills, with the ability to effectively troubleshoot complex issues. • Excellent communication and collaboration skills, with a track record of thriving while working closely with product managers, designers, and cross-functional teams. • Comfortable working in a fast-paced, dynamic environment with evolving priorities. Nice to Haves: • Experience building products from 0-to-1 or working within early-stage team environments. • Experience with the complete software development life cycle (SDLC), from initial design through to deployment and operation. • Experience building secure, scalable, and high-performance software. 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.