Aircall is a unicorn AI-powered communications platform transforming how teams win with customers.
For over a decade, we’ve believed voice builds the strongest business relationships. We bring voice, SMS, WhatsApp, and 250+ integrations together on one seamless workspace—so every customer conversation drives revenue, resolves issues faster, and builds trust. Our AI Voice Agents handle routine interactions while your team leads the conversations that matter most. Used by 24,000+ businesses worldwide.
We’re 600+ people from 40+ nationalities across Paris, London, Madrid, Berlin, New York, San Francisco, Seattle, Sydney, and Mexico City. We’re ambitious, product-driven, and execution-focused—built for visible impact, fast decisions, and real growth.
Come join us!
The Role
We’re looking for a strong Senior Python Engineer who’s eager to go beyond traditional backend development.
This role is for someone ambitious—someone 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.
You’re energized by hard technical problems—distributed systems, AI orchestration, architectural trade-offs, performance, and scalability. You can go deep when needed, but you’re equally focused on shipping, learning, and iterating quickly.
You’re curious by nature, committed to continuous improvement, and excited to bring the most effective modern approaches—whether agentic patterns or AI-augmented development workflows—into real-world production.
This isn’t just another engineering role. It’s an opportunity to help build the intelligence layer behind a next-generation autonomous Sales OS.
Key Responsibilities:- Design and implement production-grade Python services with clean architecture and strong engineering discipline.
- Architect scalable, distributed systems using Domain-Driven Design (DDD) principles.
- Integrate with external SaaS systems (CRMs, dialers, meeting tools, OAuth providers).
- Optimize performance, latency, cost, and reliability of AI-driven systems.
- Build and orchestrate LLM-powered agents (planning, reasoning, tool usage, memory).
- Develop internal frameworks to manage:
- Agent coordination
- Tool execution
- Memory layers
- Event-driven workflows
- Work closely with AI engineers, product, and founders to transform complex sales workflows into autonomous processes.
- Use AI coding assistants effectively and experiment with AI-augmented development workflows.
- 7+ years of strong backend engineering experience.
- Advanced Python expertise (async, typing, architecture patterns, testing)
- Experience designing scalable distributed systems.
- 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.
- Mindset: You’re energized by building systems that can reason and take action—not 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 essential—you’ll collaborate closely with Product, Design, and Business stakeholders, and stay deeply connected to our users and the problems they’re trying to solve.
- Fluency in English is required; Spanish is a plus.
- Backend: Python, FastAPI, Celery, PostgreSQL, uv (package-manager)
- Frontend: NextJS, Tailwind
- DevOps: Google Cloud, Kubernetes
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.
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.
Skills Required
- 7+ years of backend engineering experience
- Advanced Python expertise, including async programming, typing, architecture patterns, and testing
- Experience designing scalable distributed systems
- Experience building well-architected, clean, high-quality, maintainable systems with a focus on performance
- Experience with GCP or AWS
- Experience or interest in building systems that reason and take action
- Experience leveraging AI coding assistants and AI-augmented development workflows
- Ability to thrive in a fast-paced startup environment with strong ownership
- Strong communication and cross-functional collaboration skills
- Fluency in English
- Spanish fluency
Aircall Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Aircall and has not been reviewed or approved by Aircall.
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Healthcare Strength — Employer-paid core medical, dental, and vision coverage is emphasized, alongside mental health and wellness support. Coverage is described as starting quickly after hire and complemented by wellness reimbursements and related programs.
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Parental & Family Support — Generous parental leave for primary and secondary caregivers is highlighted, with added childcare reimbursements. Family-oriented benefits are positioned as part of a supportive culture.
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Leave & Time Off Breadth — Unlimited PTO, wellness days, and paid volunteer time are offered. Time-off policies are framed to encourage rest and work-life balance.
Aircall Insights
What We Do
Aircall is the phone system for modern business. An entirely cloud-based voice platform that integrates seamlessly with popular productivity and helpdesk tools that workplaces are already using, Aircall was built to make phone support as easy to manage as any other business workflow—accessible, transparent, and collaborative.
Why Work With Us
At Aircall, we’re equally thrilled by our ambitious goals, and by the journey that will lead us there. Our culture is rooted in our mission: we believe that now more than ever, good communication has the ability to make a difference. We’re learning, trying, and improving every day.
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