--- title: 'Senior Staff Software Engineer at Aircall' canonical: 'https://feeny.ai/job/senior-staff-software-engineer-aircall-madrid-qd2zcca9t669' type: 'job' last_seen: '2026-09-07' --- # Senior Staff Software Engineer at Aircall - **Company:** Aircall - **Location:** Madrid, Spain - **Employment:** full-time - **Work type:** hybrid - **Posted:** 2026-06-16 - **Last confirmed live:** 2026-09-07 - **Apply:** https://jobs.lever.co/aircall/4f4b1f6f-55b3-4644-bf00-25dd0f5c4da0 ## Job description 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. We are looking for an engaged and passionate Staff Engineer to join our growing engineering department and be a technical leader across our engineering teams. As a Staff Engineer, you will be responsible for driving influence across teams and domains, leading solution delivery on cross-functional and strategic initiatives, and serving as a technical leader within the engineering organization. You will ensure the set quality standards and drive the adoption of best practices in architecture, security, and DevOps. Quality, excellence, and agility drive our delivery processes and you will help us level these up. Using NodeJS and Typescript 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: - Lead transversal, complex projects, fully autonomously from ideation to completion, starting from a high-level problem statement. - Proactively communicate the technical vision across multiple teams, ensuring alignment and sharing knowledge across domains. - Act as a go-to expert, providing mentorship and guidance across teams. - Deeply understand multiple product domains; proactively identify improvements and advocate for customer needs across the company. - Lead and define technical strategies for complex, impactful problems. - Set and uphold higher quality standards and drive adoption of best practices in architecture, security, and DevOps. - Writes production-ready code, finding appropriate solutions for medium complexity challenges; participates in software design discussions; demonstrates a good understanding of system infrastructure and DevOps principles; contributes to performance and quality within their scope; applies a security-first mindset. A little about you: - A little about you:You have extensive experience (e.g., 10+ years) in back-end development, using TypeScript & NodeJS/Python/Ruby/Rails or other languages, with a focus on delivering for security, scalability, availability, and performance across multiple domains. - You lead and define technical strategies, demonstrating a strong understanding of system design to solve complex, impactful problems. - You are comfortable leading the development of complex projects affecting multiple teams and domains, driving initiatives from ideation to completion. - You are an expert at identifying opportunities for new impactful initiatives. - You have a deep understanding of multiple product domains and can anticipate long-term needs. - You possess effective and proactive communication skills, and can collaborate with different profiles and roles to ensure cross-domain alignment. Our Tech Stack: - You do not need to be familiar with all of our technical stack or any specific functional area, but you have a strong willingness to learn and adapt quickly. - Typescript/[Node.js](http://node.js/), Python, REST API/GraphQL APIs, Ruby/Rails, React AWS/Serverless or EKS, PostgreSQL, DynamoDB, OpenSearch, Redis 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. ## About Aircall ## Company Overview - **One-liner**: Aircall provides an AI-powered cloud-based customer communications platform that unifies voice, SMS, WhatsApp, and messaging with native CRM and helpdesk integrations. - **Entity Type**: Private (Venture-backed; latest deal: Secondary/Merger & Acquisition, 2026) - **Headquarters**: New York, United States (also has major offices in Paris, London, Sydney, Berlin, Madrid, San Francisco, Bellevue, and Mexico City) - **Founded**: 2014 - **Founders**: Not publicly attributed to a single named founder; the company was co-created in Paris. ## Core Business - **Primary Industries**: Cloud Communications / Contact Center as a Service (CCaaS), Customer Experience (CX) Software, AI-powered Sales & Support Tools. - **Target Customers**: B2B – primarily SMB and Mid-Market businesses (over 23,000 customers globally) looking to modernize their phone system and customer engagement. - **Mission**: To empower professionals to have richer conversations by providing a cloud-based voice solution, turning every connection into a satisfied customer. ## Products & Services - **Aircall VoIP Phone System**: The core cloud-based phone system replacing traditional PBX, with intelligent call routing, IVR, and analytics. - **AI-Powered Voice Agents**: Autonomous AI Agents that handle routine customer requests 24/7, resolving issues without human intervention. - **AI Assistants**: Real-time tools that provide live transcription, note-taking, automated CRM updates, and follow-up task creation. - **Unified Inbox**: A single platform for calls, SMS, and WhatsApp messages, ensuring all interactions are connected to the CRM. - **250+ Integrations**: Native integrations with key business tools including Salesforce, HubSpot, Zendesk, Intercom, and Slack. ## Market Standing - **Valuation**: Not publicly disclosed (Aircall last raised a Series D in 2021 at a $1B+ valuation, achieving "unicorn" status). - **Key Metric**: - **Annual Recurring Revenue (ARR)**: Exceeded $100 million as of 2022 (reached "Centaur" status). - **Total Funding**: $226 million raised since 2015 (Seed, Series A, B, C, D). - **Notable Investors/Partners**: Goldman Sachs Asset Management (led Series D), DTCP, Swisscom, Adam Street, Balderton Capital, HubSpot Ventures. - **Growth Signals**: - Over 23,000 customers across 110+ countries. - Headcount of ~700-800 employees across 9 global offices. - Named to the Deloitte Fast 500 list. - Recent M&A activity (acquired Piper and Vogent in 2026) signaling aggressive expansion. ## Competitive Advantages - **Platform Agnosticism**: Deep, native integrations with over 250 business apps (compared to more closed ecosystems). - **AI-First Approach**: Integrated AI Agents and Assistants embedded directly into the conversation flow, not as a separate add-on. - **Team-Led Design**: Unlike traditional contact centers built for mass scale, Aircall is optimized for team-led collaboration and CRM-driven workflows. - **Enterprise-Grade Compliance**: SOC2 Type II, GDPR, and HIPAA compliant, allowing use in regulated industries. ## Strategic Focus - **AI Integration**: Embedding AI across the entire platform to automate manual tasks (post-call work, note-taking, routing) and provide live coaching. - **Product Expansion**: Building out autonomous AI Agents to handle after-hours and peak volume calls. - **Global Scale**: Expanding international presence (recent office openings in Mexico City and Madrid) and pushing into the APAC market (Sydney office). - **Vertical Integration**: Recent acquisitions (Piper, Vogent) suggest a push to broaden the product suite and deepen AI capabilities. ## Why Work Here - **Culture & Size**: ~700 employees from 40 nationalities, described as a "scale-up" environment — past the chaotic startup phase but still moving fast. - **Flexibility**: Flexible remote policy rated highly by employees; work-from-home options are available. - **Diversity & Inclusion**: Explicit commitment to DE&I; "we celebrate what makes you, you." - **Growth Trajectory**: The company is at an inflection point (post-Centaur, post-unicorn) with aggressive M&A. Opportunity to shape the product, culture, and processes at scale. - **Perks**: Competitive salary, flexible remote policy, and "be the best version of yourself" ethos. - **Global Exposure**: Opportunities to work across 9 offices and collaborate with teams in North America, Europe, and APAC. ## Sources 1. [aircall.io](https://aircall.io/) - Official website, product overview 2. [aircall.io/careers](https://aircall.io/careers/) - Careers page, culture, headcount data 3. [aircall.io/about-us](https://aircall.io/about-us/) - About page, history, funding milestones 4. [linkedin.com/company/aircall](https://www.linkedin.com/company/aircall) - LinkedIn profile, employee count, open positions 5. [pitchbook.com](https://pitchbook.com/profiles/company/81891-91) - PitchBook profile, funding history, recent M&A (2026) ## Other roles at Aircall - [Data Scientist](https://feeny.ai/job/data-scientist-aircall-new-york-8k1x5fpnkztz) — New York, NY - [Customer Engineer - Iberia & Italy](https://feeny.ai/job/customer-engineer-iberia-italy-aircall-madrid-t7cv2ct5kypm) — Madrid, Spain - [Product Manager Intern](https://feeny.ai/job/product-manager-intern-aircall-paris-azf47yap5j53) — Paris, France - [Number Operations Specialist](https://feeny.ai/job/number-operations-specialist-aircall-remote-012f6hb4efnw) - [Billing Specialist](https://feeny.ai/job/billing-specialist-aircall-remote-7qd8vqm7n26b) - [Staff Software Engineer](https://feeny.ai/job/staff-software-engineer-aircall-madrid-dtkcra8peqj2) — Madrid, Spain - [Senior Revenue Operations Business Partner, EMEA](https://feeny.ai/job/senior-revenue-operations-business-partner-emea-aircall-paris-gc5hs3xa6mgb) — Paris, France - [Software engineer, Programmable Comms](https://feeny.ai/job/software-engineer-programmable-comms-aircall-madrid-k8f56w7vzxyt) — Madrid, Spain - [Mitarbeiter im Innendienst (m/w/d)](https://feeny.ai/job/mitarbeiter-im-innendienst-m-w-d-aircall-berlin-jtd0mcxzqjxy) — Berlin, Germany - [Regional Marketing Intern, DACH Market](https://feeny.ai/job/regional-marketing-intern-dach-market-aircall-paris-10fbh5dr8r2t) — Paris, France