Founding AI Engineer @Plato (backed by Hexa)

We're looking for a strong software or AI engineer with 2+ years of experience who wants to build real-world AI products at the forefront of the agentic stack.

You like working close to founders and users, making pragmatic technical decisions, and shipping software that actually runs in production.

You’ll thrive in this role if you:

• Have a strong software engineering foundation, ideally with Typescript and experience shipping production systems

• Have experience with agents and/or evals and frameworks like Mastra, Eve, Pydantic, Langchain, etc…

• Can take an AI problem from experimentation to production

• Enjoy solving problems with no clear solution

• Have a strong product mindset and care about user impact

• Are autonomous and pragmatic, comfortable navigating early-stage ambiguity and shipping fast

⚙️ Our tech stack

Our stack is designed to support AI-first workflows and production reliability.

• Backend & Frontend: TypeScript, Node.js, React, tRPC

• Infrastructure: AWS (Terraform)

• Data & AI: Mastra, Bedrock

• Database: Postgres

You don't need to master every tool — what matters is your ability to design robust systems, learn fast, and make sound technical trade-offs.

💎 What we offer

• Build alongside a strong AI expert: Work closely with Alexandre, our CTO, who has deep expertise in AI agents, and turn cutting-edge AI into production systems.

• Ownership & Impact: As the second engineering hire, you'll have real influence on the product and technical direction

• Bring AI to real users: Build production AI systems that solve real problems in a complex, high-stakes domain

• Hexa ecosystem: Access to expertise, resources, and network from one of Europe's leading startup studios

• Competitive package: Attractive salary + meaningful equity

• Paris-based team: Work alongside the founding team in our office

• Growth: Opportunity to grow into a technical leadership role as the team scales

Plato is committed to creating a diverse environment. All qualified applicants will receive consideration for employment irrespective of gender, origin, identity, background and sexual orientation.

We know there's a long way to go regarding diversity in our industry, which is why we encourage all applicants to apply to our open positions.