---
title: 'Infrastructure Engineer (Platform) - London at H Company'
canonical: 'https://feeny.ai/job/infrastructure-engineer-platform-london-h-company-london-252vztdz5ab7'
type: 'job'
last_seen: '2026-10-17'
---

# Infrastructure Engineer (Platform) - London at H Company

- **Company:** H Company
- **Location:** London, United Kingdom
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-10-08
- **Last confirmed live:** 2026-10-17
- **Apply:** https://jobs.ashbyhq.com/hcompany/9c4153a5-9c62-4013-bca4-effdcbe92083

## Job description

You'll be joining the team responsible for the infrastructure behind all of H's products: clusters, networking and security. It's the foundation that lets the rest of the company deliver value directly to customers.

## What you'll own

From your first quarter, you'll own a real piece of our move from AWS to an environment-agnostic platform. The team moves fast and the problems are novel: each model release and each new customer changes what the infrastructure has to support.

## What you'll be doing

- Running and scaling Kubernetes clusters and networking
- Building authentication and authorization systems
- Refactoring the stack to be environment agnostic
- Speeding up deployment for our Forward Deployed Engineers (FDEs)
- Building Kubernetes-native services, such as controllers and operators
- Writing and maintaining infrastructure as code

## Your team and your users

The role sits in the Infrastructure team, with our VP of Engineering as hiring manager. Your users are H's product and platform engineers and, through our FDEs, our external customers.

## What we think it takes

You're likely a good fit if you:

- Write Python or Go well enough to solve real problems with it
- Have built and operated a Kubernetes-based platform at significant scale and can put numbers on its clusters, services and users
- Have worked with more than one cloud provider (AWS, Azure, GCP), or have strong knowledge of fundamental systems engineering (Linux, eBPF)
- Have built and owned infrastructure as code, CI/CD and observability

Stronger still if you have:

- Worked with complex network topologies (multi-cluster, dual-stack) and CNIs such as Cilium or Calico
- Handled petabyte-scale data, or high-frequency, latency-sensitive workloads
- Worked with agentic systems, particularly in security
- Worked with GPUs and tools such as Dynamo, vLLM or SGLang

## How we hire

Five stages, about 3.5 hours in all: a 30-minute call with our Talent team, a 30-minute conversation with the lead of the Infrastructure team, a 60-minute coding interview, a 60-minute system design interview and a closing 30-minute conversation with our VP of Engineering.

Practicalities The role is hybrid, with three days a week in our Paris or London office. We offer a competitive package.

## About H Company

## Company Overview
- **One-liner**: H Company builds a full-stack enterprise platform for deploying autonomous AI agents that can navigate digital workflows, fill forms, and complete tasks across browsers and enterprise systems.
- **Entity Type**: Private (Venture Capital-Backed; Seed stage)
- **Headquarters**: Paris, France (with a hub in London, UK)
- **Founded**: 2023
- **Founders**: Gautier Cloix (CEO), Laurent Sifre (Chair of the Scientific Committee); leadership team includes Maxime Defauw, Caroline Charra, Pierre-Louis Cedoz, and Géraldine Lafontaine [hcompany.ai/team](https://hcompany.ai/team)

## Core Business
- **Primary industry**: Business/Productivity Software; Artificial Intelligence & Machine Learning; Automation/Workflow Software [pitchbook.com](https://pitchbook.com/profiles/company/597244-24)
- **Target customers**: Global enterprises (B2B)
- **Mission**: Build AI systems that powerfully and reliably work in the real world, enabling teams to focus on what matters by letting AI do the rest [hcompany.ai](https://hcompany.ai/)

## Products & Services
- **Holo Models API (Holo3)**: Multimodal AI models designed to interpret content and operate across real-world digital workflows. Available via API for enterprise integration.
- **HoloTab**: A Chrome extension that deploys an AI agent inside the browser. It navigates websites, fills out forms, and completes tasks on behalf of the user. Users can create "Routines" to automate manual chores.
- **Autonomous Enterprise Operations Platform**: A full-stack enterprise platform combining models, advanced agents, scalable execution, and continuous learning for deploying "action-oriented AI" in production.

## Market Standing
- **Valuation**: Not publicly disclosed (Privately held)
- **Total Funding**: $220M raised (Seed Round completed May 2024) [pitchbook.com](https://pitchbook.com/profiles/company/597244-24)
- **Key Metric**: 90 employees (as of 2026); generating revenue [pitchbook.com](https://pitchbook.com/profiles/company/597244-24)
- **Notable Investors/Partners**: Accel, Aglaé Ventures, Amazon.com, Auriga Cyber Ventures, La French Tech (24 total investors) [pitchbook.com](https://pitchbook.com/profiles/company/597244-24)
- **Growth Signals**: Acquired Mithril Security (Jan 2024); maintains a wholly-owned subsidiary H.Ai Technology in London; active hiring across Research Lab, Forward Deployed Engineering, and Product Development teams

## Competitive Advantages
- **Full-stack approach**: Combines proprietary multimodal models, browser-based agents (HoloTab), and enterprise orchestration into a single platform rather than point solutions.
- **Deep research foundation**: Leadership includes former foundational AI researchers who have scaled products used by governments and the world’s largest enterprises [hcompany.ai/team](https://hcompany.ai/team)
- **First-mover in browser-based enterprise agents**: HoloTab competes in the emerging "AI agent doing work in your browser" category, differentiated by enterprise-grade reliability and routine automation.
- **Strong investor syndicate**: Backed by Accel, Aglaé Ventures, and Amazon.com — signaling confidence in enterprise AI deployment.

## Strategic Focus
- Scaling agentic AI from browser extensions (HoloTab) to full enterprise-wide autonomous operations
- Expanding the Holo Models API (Holo3) as a platform for third-party developers and enterprise integrations
- Growing the Forward Deployed Engineering (FDE) team to customize solutions for large enterprise clients
- Continuing research into reliable, action-oriented AI systems that can be trusted in production environments

## Why Work Here
- **Culture**: Described as "fast-moving, creative, and collaborative" with a "high-trust, multicultural environment." Values include integrity, curiosity, impact-first mentality, and "ship fast, learn faster" [hcompany.ai/careers](https://hcompany.ai/careers)
- **Work style**: Hackathons spark bold ideas, regular offsites, team celebrations. "Everyone’s empowered to take initiative, fix what’s broken, and own outcomes." [hcompany.ai/careers](https://hcompany.ai/careers)
- **Team composition**: A blend of deep research expertise and hands-on experience building and deploying mission-critical technology at global scale. Teams include Research Lab, Forward Deployed Engineering, and Product Development [hcompany.ai/team](https://hcompany.ai/team)
- **Locations**: Headquarters in Paris, hub in London. Roles likely span both offices with flexibility (policy not explicitly stated).
- **Role types actively hiring**: Research, Forward Deployed Engineering, Product Development [jobs.ashbyhq.com/hcompany](https://jobs.ashbyhq.com/hcompany)

## Sources
1. [hcompany.ai](https://hcompany.ai/) — Official website with product descriptions, mission, and platform overview
2. [hcompany.ai/team](https://hcompany.ai/team) — Leadership team, values, and team structure
3. [hcompany.ai/careers](https://hcompany.ai/careers) — Culture, values, and hiring philosophy
4. [jobs.ashbyhq.com/hcompany](https://jobs.ashbyhq.com/hcompany) — Active job openings
5. [pitchbook.com](https://pitchbook.com/profiles/company/597244-24) — Funding history, valuation, investors, employee count, and acquisition data

## Other roles at H Company

- [Digital Manager](https://feeny.ai/job/digital-manager-h-company-paris-cym5dpsb2ned) — Paris, France
- [Content Manager](https://feeny.ai/job/content-manager-h-company-paris-ksf7evcjs497) — Paris, France
- [Social Media and Content Strategist - Community](https://feeny.ai/job/social-media-and-content-strategist-community-h-company-paris-aq4wcyhgk9dm) — Paris, France
- [Business Partner / Executive assistant to CEO](https://feeny.ai/job/business-partner-executive-assistant-to-ceo-h-company-paris-fvv7y2xhvbg6) — Paris, France
- [Infrastructure Engineer (ML Compute) - London](https://feeny.ai/job/infrastructure-engineer-ml-compute-london-h-company-london-4ns334xrmxmc) — London, United Kingdom
- [Infrastructure Engineer (ML Compute) - Paris](https://feeny.ai/job/infrastructure-engineer-ml-compute-paris-h-company-paris-mnpet23ae537) — Paris, France
- [Product Designer - Paris](https://feeny.ai/job/product-designer-paris-h-company-paris-x0q7jf2tsexe) — Paris, France
- [Product Designer - London](https://feeny.ai/job/product-designer-london-h-company-london-88e2tsm70qwt) — London, United Kingdom
- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-h-company-london-hpack26mhfaa) — London, United Kingdom
- [Technical Lead, Observability - Paris](https://feeny.ai/job/technical-lead-observability-paris-h-company-paris-53k7x9425fje) — Paris, France