AI Software Engineer (Real-Time Systems)

Overview

We're building the next generation of real-time conversational AI systems. Our research team is focused on advancing the intelligence layer of our agents. What we're missing is a strong engineer to own the execution layer — the systems that make this intelligence work reliably, at scale, and in real time. This role sits at the intersection of AI, backend engineering, and infrastructure . You will take ownership of the engineering backbone behind our AI agents: performance, latency, reliability, and scalability.

What you'll do

• Own and evolve the backend systems powering our conversational AI platform.
• Design, build, and optimise real-time systems with a strong focus on latency and performance.
• Maintain and improve our server stack, pipelines, and production infrastructure.
• Develop scalable APIs and services using Python and FastAPI.
• Work closely with the AI research team to integrate new models, ideas, and agent capabilities into production.
• Support and optimise integrations with multiple AI providers.
• Identify bottlenecks, fix bugs, resolve tickets, and continuously improve system reliability.
• Drive improvements in data accuracy, system performance, and real-time responsiveness.
• Write a significant amount of production code and continuously improve existing systems.

Requirements

• Strong backend engineering fundamentals with a product mindset.
• Expert-level Python skills and experience building production systems.
• Strong experience with FastAPI and asynchronous programming.
• Experience building low-latency, high-throughput systems in production environments.
• Hands-on experience with MLOps tooling (Docker, Kubernetes, GPU workloads).
• Experience working with LLMs, AI agents, or deploying AI systems into production.
• Ability to work closely with research teams and translate ideas into scalable systems.
• High ownership, speed, and pragmatism.
• Background from top engineering schools in France is a strong plus.

What this role is

• This is not a research role.
• You will not be writing papers or training foundation models.
• You will be the person who makes AI actually work in production.

Benefits

• High ownership and autonomy
• Diverse, international team across Europe
• Exposure to cutting-edge AI, voice, and enterprise deployments
• Fast-paced environment with strong learning curve
• 25 days holiday + public holidays
• Private healthcare (based on country - for France it is 50% coverage for you, and 100% coverage for your kids)
• Swile (France only)
• Pension contribution
• ESOP/VSOP (shares)