Head of Engineering - Paris

Head of Engineering

About H:

H exists to push the boundaries of superintelligence with agentic AI. By automating complex, multi-step tasks typically performed by humans, AI agents will help unlock full human potential.

H is hiring the world’s best AI talent, seeking those who are dedicated as much to building safely and responsibly as to advancing disruptive agentic capabilities. We promote a mindset of openness, learning, and collaboration, where everyone has something to contribute.

Responsibilities

• Own, review, and challenge the end-to-end architecture of our product and research stack, including inference systems and the agent platform.

• Scale and lead the Product Engineering, Infrastructure, and Inference teams, with clear ownership, execution rigor, and strong technical standards.

• Partner closely with Product, Research, and Leadership to translate strategy into reliable, scalable systems.

Must-have experience

• Proven track record building and scaling a production SaaS platform.

• Strong hands-on experience with AWS, Docker, Kubernetes, Redis, and modern observability tooling (e.g. Datadog).

• Exposure to MLOps, large-scale model training, inference systems, or LLM-based reinforcement learning.

• Experience operating multi-tenant systems with high reliability, security, and performance.

• Experience building and deploying enterprise platforms self-hosted or on-premise.

• Familiarity with SOC 2 or similar compliance frameworks in a production environment.

Nice-to-have experience

• Experience orchestrating compute-intensive workloads (training and/or large-scale inference).

• Familiarity with workflow orchestration platforms.

Location:

• Paris or London.

• This role is hybrid, and you are expected to be in the office 3 days a week on average.

• Please expect some travel between offices on a reasonable cadence (e.g., every 4-6 weeks).

What We Offer:

• Join the exciting journey of shaping the future of AI, and be part of the early days of one of the hottest AI startups.

• Collaborate with a fun, dynamic, and multicultural team, working alongside world-class AI talent in a highly collaborative environment.

• Enjoy a competitive salary.

• Unlock opportunities for professional growth, continuous learning, and career development.

If you want to change the status quo in AI, join us.