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. Weโre redefining customer communications by bringing voice, SMS, WhatsApp, and AI together into one seamless workspace.
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Our momentum comes from a simple idea: help teams work smarter, not harder. Aircallโs 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.
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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. Weโve built a product customers love and a business thatโs scaling quickly, backed by world-class investors and driven by rapid AI innovation across multiple product lines.
At Aircall, youโll join a company in motion. Weโre ambitious, product-driven, and execution-focused, with visible impact, fast decisions, and real growth.
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How we work at Aircall: Weโre 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, youโll feel at home here.
Within Aircall, we are launching a specialized New Product Unit to build the future of autonomous sales. We are improving the AI Orchestration Layerโa system that records and understands every customer interaction (calls, video, email, WhatsApp) to autonomously execute sales workflows: CRM updates, follow-ups, task creation, and coaching insights.ย Our long-term vision is to evolve this into a self-improving, agentic Sales OSโwhere specialized AI agents collaborate, coordinate, and continuously optimize the revenue process.
The RoleWeโre looking for a strong Senior Python Engineer whoโs eager to go beyond traditional backend development.
This role is for someone ambitiousโsomeone who takes pride in building things well, but knows how to move fast in a startup environment. You strike the right balance between clean architecture and pragmatism, between perfection and progress.
Youโre energized by hard technical problemsโdistributed systems, AI orchestration, architectural trade-offs, performance, and scalability. You can go deep when needed, but youโre equally focused on shipping, learning, and iterating quickly.
Youโre curious by nature, committed to continuous improvement, and excited to bring the most effective modern approachesโwhether agentic patterns or AI-augmented development workflowsโinto real-world production.
This isnโt just another engineering role. Itโs an opportunity to help build the intelligence layer behind a next-generation autonomous Sales OS.
What Youโll Do
- Design and implement production-grade Python services with clean architecture and strong engineering discipline.ย
- Architect scalable, distributed systems using Domain-Driven Design (DDD) principles.ย
- Integrate with external SaaS systems (CRMs, dialers, meeting tools, OAuth providers).ย
- Optimize performance, latency, cost, and reliability of AI-driven systems.ย
- Build and orchestrate LLM-powered agents (planning, reasoning, tool usage, memory).ย
- Develop internal frameworks to manage:ย
- Agent coordinationย
- Tool executionย
- Memory layersย
- Event-driven workflowsย
- Work closely with AI engineers, product, and founders to transform complex sales workflows into autonomous processes.ย
- Use AI coding assistants effectively and experiment with AI-augmented development workflows.ย
What Weโre Looking For
- 7+ years of strong backend engineering experience.ย
- [REQUIRED] Advanced Python expertise (including async programming, type hints, architecture patterns, and testing), with a minimum of 1 year of recent professional experience
- [REQUIRED] Experience developing APIs in Python (e.g., Flask, Django, or FastAPI)
- Experience designing scalable distributed systems.ย
- You design thoughtful, well-architected systems and write clean, high-quality code, with a focus on performance and long-term maintainability.
- Experience with GCP (preferred) or AWS.ย
- Mindset: Youโre energized by building systems that can reason and take actionโnot just generate responses.
- You actively leverage AI coding assistants and are driven to push the boundaries of AI-augmented engineering.
- You thrive in fast-paced startup environments where ownership is real and impact is immediate.
- Strong communication skills are essentialโyouโll collaborate closely with Product, Design, and Business stakeholders, and stay deeply connected to our users and the problems theyโre trying to solve.
- Fluency in English is required; Spanish is a plus.
Tech Stack
- Backend: Python, FastAPI, Celery, PostgreSQL, uv (package-manager)ย
- Frontend: NextJS, Tailwindย
- DevOps: Google Cloud, Kubernetesย
This is not including equity and other benefits. The actual salary offered will carefully consider a wide range of factors, including your skills, qualifications, and experience.
Why join us?
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\uD83D\uDE80 Key moment to join Aircall in terms of growth and opportunities
\uD83D\uDC86โโ๏ธ Our people matter, work-life balance is important at Aircall
\uD83D\uDCDA Fast-learning environment, entrepreneurial and strong team spirit
\uD83C\uDF0D 45+ Nationalities: cosmopolite & multi-cultural mindset
\uD83D\uDCB5 Competitive salary package & benefitsย
\uD83C\uDFE8 Medical, dental, and vision insurance is 100% covered
\uD83D\uDCC8ย 401k plan with company matching!
โ๏ธย Unlimited PTO โ take the time you need to come to work feeling great!
โญ๏ธย Wellness, internet, and childcare reimbursements
\uD83D\uDC9Aย Generous parental leave policy
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DE&I Statement:ย
At Aircall, we believe diversity, equity and inclusion โ irrespective of origins, identity, background and orientations โ are core to our journey.ย
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We pride ourselves on promoting active inclusion within our business to foster a strong sense of belonging for all. Weโre working to create a place filled with diverse people who can enrich and learn from one another. Weโre 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.ย ย
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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.
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Want to know more about candidate privacy? Find ourย Candidate Privacy Notice here.
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.