Founding Cloud Infrastructure Engineer
We usually respond within a week
The Opportunity
Henosia has product-market fit. People are building real apps with us. They're automating work. They’re integrating systems and connecting data. We've proven that vibe coding works, not just as a toy, but for real businesses, in production. You can describe software in plain text and get production-ready code.
Here's the challenge: our current infrastructure doesn’t scale to what's coming. We need to go from supporting hundreds of concurrent sandboxes to tens of thousands. And we need to do it without our cloud bills spiralling out of control. Fully isolated development environments that start in a second. That's where you come in.
You'll own the entire cloud infrastructure. You'll architect how we scale our sandbox environment using micro VMs. You'll build the systems that keep users isolated from each other. You'll make sure we can handle 100x growth without everything catching fire.
There's no infrastructure team. No senior engineer to guide you. It's you, the founders, and the product engineers. You'll make the calls on what tech to use, how to architect it, and when to ship.
If you get this right, you'll have built the foundation that lets millions of people build software on Henosia. No pressure.
What You'll Do
You'll own infrastructure. Specifically:
Build and scale our Micro VM-based sandbox infrastructure from the ground up
Design and build resilient systems for rolling out new releases
Design isolation and security systems so users can run untrusted code safely
Architect for massive scale—think 10x, 100x, 1000x current load
Optimize costs—every Micro VM costs money, every second matters
Work with product engineers to make sure infra integrates smoothly
Monitor, debug, and fix infrastructure issues before users notice them
Make hard calls on technical tradeoffs
Ship fast—this is infrastructure, but it's still a startup
Who You Are
You've been building infrastructure for 5-10+ years. You know how to scale systems. You've dealt with the pain of production outages at 3am and learned from them.
You understand Micro VMs, Linux networking, and containerization deeply. Maybe you've worked with Cloud-hypervisor, Firecracker, gVisor, or similar tech.
You know or want to learn Typescript and Go. TypeScript is our main language, but we’re open to adopting Go for key infrastructure components. Ideally, you know both languages, or you’re willing to learn them.
You don't need someone to tell you what to build. You see a scaling problem, you architect a solution. You see a security hole, you fix it. You're comfortable making big technical decisions with incomplete information.
You're paranoid about security. Not in a theoretical way - in a "users will run potentially malicious code in our sandbox, and I need to make sure they can't escape"-way.
You're fine with chaos. Infrastructure at early-stage startups is held together with duct tape and prayers. You know how to move fast without breaking everything.
Requirements
Must have:
5-10+ years building and scaling cloud infrastructure (you've been on-call)
Deep experience with Linux containerization and Linux VMs
Track record of architecting systems for scale
Experience with one or more cloud platforms (AWS, GCP, Azure, Hetzner)
Self-starter mindset—you figure things out
Nice to have:
Experience with Cloud-hypervisor, Firecracker, or similar Micro VM technologies
Experience managing a fleet of bare metal servers at scale, e.g. Hetzner Robot
Advanced level experience with Linux networking, namespaces, file systems, and memory management
TypeScript and Go knowledge
Worked at an early-stage startup before
Built coding sandbox systems
Dealt with security in multi-tenant environments
What We Offer
Base salary is 70-80K DKK/month (depends on experience)
ESOP. For the right profile, real equity in a fast-growing startup
Remote friendly. Denmark-based is a plus but not required
Own the infrastructure. Founding role means you decide how we scale
Work with experienced founders. Jim and Janne have been building products for 20 years
Solve real problems. This isn't maintaining someone else's infra - you're building it from scratch
- Department
- Tech
- Remote status
- Fully Remote
Job Opportunities
HQ, Denmark
About Henosia
Henosia is an AI tool for App Generation. Simply describe the app you want built and Henosia will build it for you. Automate work flows, optimize processes, and eliminate manual work by building and deploying tailor made tools with Henosia. Build the tools that until now have been too complex or too expensive to bring your company to the next level.
Henosia was founded in 2021 by Jim and Janne, two software professionals with 20+ years of experience each.