Lead Software Engineer - Platform

Kleio; Paris; Sur place; EUR 90 000 - 140 000; Plein temps

Résumé du poste

Kleio is seeking a Lead Software Engineer to develop infrastructure and tools for its Conversational AI in enterprise applications. You will drive design, implementation, deployment, and maintenance across the full lifecycle, while shaping a collaborative culture as a founding member.

You will work with product managers, data scientists, and engineers to deliver robust, scalable solutions and mentor a growing team in a fast-paced environment.

Qualifications

• 5+ years of professional software development experience.
• Proven track record of designing and developing full-stack web solutions for complex problems.
• Strong hands-on experience with data structures, algorithms, profiling/optimization, DRY code, and OO/FP principles.
• Demonstrated end-to-end ownership of projects.
• Excellent verbal and written communication skills in English.
• Demonstrated interest in Generative AI technology (e.g., RAG concepts).

Responsabilités

• Design and implement robust software engineering solutions and frameworks.
• Implement and enhance engineering best practices company-wide.
• Collaborate with data scientists to translate AI research into production-ready features.
• Lead cross-team technical design discussions on architecture, UI components, and testing.
• Mentor junior team members and ensure coding standards.
• Interface and communicate with customers.
• Contribute to building and growing the engineering team.

Connaissances

5+ years of experience

Typed languages

Full-stack design

End-to-end ownership

English communication

Leadership experience

Formation

Degree in Computer Science / Math

Outils

TypeScript

Python

Java

Description du poste

We are looking forward to receiving applications from top talents.

Kleio was recently founded to revolutionize how companies engage with customers and boost sales.We are building Persuasive AI: a multi-agent conversational AI capable of autonomously engaging consumers in rich conversations to capture and convert leads.We are seeing a lot of traction across multiple industries (travel, real estate, domestic appliances, cosmetics, etc.) and are looking for highly skilled and experienced software engineers convinced that AI will change how we live.

The Role:

As a lead software engineer of Kleio, you will be tasked with developing the infrastructure and tools to improve our novel Conversational AI technology in our enterprise applications. You’ll collaborate with product managers, data scientists, and other engineers and will be responsible for your components’ entire lifecycle (from design to deployment and maintenance).As a founding member of Kleio, you will help us shape a healthy company culture based on collaboration and trust, attract and hire the best talent, and build a great company.A successful candidate will thrive in a fast-paced, innovative, and highly collaborative environment, and execute precisely and quickly.

Responsibilities :

• Design and implement robust software engineering solutions and frameworks to solve our customers’ needs.
• Implement and enhance engineering best practices company-wide.
• Work with data scientists to research and implement the latest approaches to efficiently leverage the latest AI models and techniques.
• Lead cross-team technical design discussions on application architecture, UI components, UX, back-end and third-party integration, and testing.
• Manage individual project deliverables and mentor junior team members on industry coding standards and design techniques.
• Interface and communicate with customers.
• Help grow the team.

Our stack:

We use standard modern technologies that get the job done, we are not zealots of a specific technology stack, we use proven off-the-shelf components because we don’t like reinventing the wheel.For example, our current stack includes:

• Svelte / TypeScript for the UI
• Hosted LLM services (open or closed source LLMs)
• GCS, Redis, relational, vector and graph databases
• Google Cloud Platform for hosting

Qualifications :

• 5+ years of professional software development experience; experience with typed languages (TypeScript, Python + Pydantic, Java, etc.) preferred.
• Proven track record of designing and developing full-stack web solutions for complex problems.
• Strong hands-on experience and understanding of data structures, algorithms, profiling/optimization, DRY code, and Object-Oriented and Functional Programming.
• Demonstrated end-to-end ownership of projects.
• Excellent verbal and written communication skills in English.
• Demonstrated interest in Generative AI technology (e.g., you know what a RAG is and how to build a simple one).

Preferred Qualifications :

• Proven track record of applying ML algorithms in a production system.
• Professional experience working with LLMs, Agents, etc.
• Degree in Computer Science, Math, or a similar quantitative field.
• Practice of Agile development methodology.
• Experience in leading engineering teams and projects.

If you're excited about building AI-driven applications and shaping the future of digital conversations, Apply Now

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