Staff Software Engineer, AI

Aircall.io, Inc.; San Francisco (CA); On-site; USD 195,000 - 250,000; Full time

Job summary

Aircall is seeking a backend/AI engineer to build scalable AI applications for its AI Products Platform. You will work with backend, frontend, and infrastructure teams to deliver robust systems and real-time guidance across our product lines.

The role focuses on security, performance, and reliability, with exposure to LLMs and AI frameworks. Based in San Francisco with potential for hybrid work depending on team needs.

Qualifications

• 8+ years of back-end development with Python, Typescript/Node.js or Java, focusing on security, scalability and reliability.
• Knowledge of AI and experience with LLMs and AI frameworks (Langchain, LlamaIndex, etc.).
• Security is a top priority in all development.
• Nice to have: AWS production experience and designing for AWS environments.

Responsibilities

• Develop scalable AI applications for Aircall's AI Products Platform.
• Collaborate with backend, frontend, and infrastructure teams.
• Participate in requirements analysis and system design.

Skills

Python

Typescript/Node.js

Java

Tools

Langchain

LlamaIndex

Auto Gen

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.

As a backend/AI engineer at Aircall, you will be working on developing scalable AI applications to be used by our 20,000+ customers. You will be a part of the AI Products Platform team, working on areas like agent context, agent infrastructure, MCP, agent memory etc.
You will work closely with backend, front end and infrastructure engineers, as well as product and leadership teams. You will also participate in requirements analysis and design of these systems.

• 8+ years of experience in back-end development in with Python, Typescript/Node.js or Java, with a focus on delivering for security, scalability, availability, and performance
• Knowledge of AI and experience in AI is a strong plus: Knowledge about LLMs (GPT, Mistral, Llama, Claude, etc.) and experience developing with them (usage, prompting, etc), AI frameworks (Langchain, LlamaIndex, Auto Gen, etc), AI architectures (RAG, reranking, etc)
• Security is at the forefront of your mind in everything that you do
• Nice to have: Ideally you will have worked 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

Base salary range: $195,000—$250,000 USD

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.