Software Engineer (€70k-€90k + Equity) at Ooak Data

Job Title

Software Engineer

Salary

€70k-€90k + Equity

Company Description

Ooak Data is a YC-backed startup building Alexandria, the world's largest library of real-world business workflow datasets, to enable reliable AI agent automation for complex enterprise environments.

Job Description

As a founding Software Engineer at Ooak Data, you will own the platform layer, designing and scaling the web applications, APIs, and data pipelines that power Alexandria. Working directly with the CTO, you'll define technical standards and architecture for real-world business workflow datasets, directly shaping the future of AI automation.

Location

Paris, France

Why this role is remarkable

• Play a pivotal role as a founding engineer at a Y Combinator-backed startup at the cutting edge of the AI agent revolution.
• High-impact ownership over a greenfield platform building the world's largest library of anonymized business workflow datasets.
• Dynamic, fast-paced environment in central Paris with a direct line to founders and a culture rooted in trust and ambition.

What You Will Do

• Design, build, and scale robust back-end services and APIs to power complex data pipelines and RL environments.
• Develop clean, reactive front-end interfaces for critical data curation, annotation, and monitoring tools using modern web frameworks.
• Define core technical standards and architecture, making high-stakes decisions on tech stack, scalability, and DevOps practices.

The ideal candidate

• 4+ years of professional software engineering experience with deep expertise in TypeScript and Python, and ideally some Rust.
• Proven track record of delivering end-to-end projects using Node.js, modern front-end frameworks like React or SvelteKit, and PostgreSQL.
• Entrepreneurial mindset with the ability to thrive in a demanding startup environment and a desire to mentor future engineering hires.