Software Engineer, Sandbox environments

Imagine a future where AI systems can safely execute code, interact with tools, and operate complex environments - without compromising security or performance. At Verda, we’re building a fully featured European cloud computing platform, and a key part of that is enabling secure, high‑performance execution environments for AI workloads. Our Sandbox Service sits at the intersection of virtualization, containers, and large‑scale orchestration - powering how models interact with the world.

We’re ambitious, curious, and pragmatic builders. We operate with low hierarchy, high ownership, and a strong bias for action. We’ve already achieved a lot, but we’re just getting started. Now it’s your chance to join the ride.

• Deploy, operate, and improve Verda’s Sandbox Service – our platform for secure execution environments across clusters.
• Work closely with platform engineers, focusing on production operations, automation, troubleshooting, and incremental improvements.
• Deploy and maintain sandbox environments based on containers, Firecracker microVMs, and QEMU/KVM virtual machines, ensuring reliability and performance across the stack.
• Write and maintain automation for provisioning and lifecycle management.
• Actively operate the platform in production, monitoring health, responding to incidents, and driving root‑cause analysis.
• Diagnose and resolve issues across multiple layers, including the host OS, hypervisor, container runtime, and guest environments.
• Integrate the Sandbox Service with provisioning, scheduling, and observability systems across Verda’s platform.
• Monitor performance characteristics such as startup times, density, I/O behavior, and networking, while building tools and dashboards for observability, auditing, and capacity planning.
• Stay close to upstream developments (e.g., kernel changes, Firecracker releases) and support rollouts, migrations, and on‑call operations.

• Strong Linux fundamentals (Ubuntu/Debian), including system configuration and troubleshooting.
• Solid understanding of virtualization concepts (KVM, QEMU, hypervisors).
• Experience with containers (Docker/Podman) and understanding of name spaces, cgroups, and file systems.
• Experience with Bash scripting and Python for automation and tooling.
• Familiarity with Linux kernel modules and debugging via sysfs, procfs, and dmesg.
• Basic networking knowledge (bridging, NAT, routing, debugging with tools like ip, ss, tcpdump).
• Comfortable working across system layers (OS, hypervisor, container runtime, guest environments).
• Experience using AI coding tools (e.g., Claude Code, Codex) for automation and operational tasks.
• Proficiency with Git.

• Hands‑on experience with KVM, QEMU, libvirt, Firecracker, or MicroVM.nix.
• Experience with Linux kernel modules relevant to sandboxing (vfio, virtio, vhost).
• Additional sandbox substrates:
  Cloud Hypervisor, Kata Containers (kata‑clh/kata‑fc/kata‑qemu), gVisor (runsc).
• NixOS, Nix packages, MicroVM.nix.
• Orchestration platforms:
  Kubernetes (CRI), Nomad; familiarity with production sandbox stacks (AWS Lambda, Modal, Fly.io, E2B, Northflank).

• Cash + equity compensation.
• Various fringe benefits (e.g., healthcare, lunch, wellbeing).
• Profitable operations with rapid, sustained growth.
• 31 nationalities, with 6 different ones on the management team.

• Location:
  
  Helsinki.
• Hybrid mode:
  Working 3 days a week from our Helsinki office.
• Employment type:
  
  Full‑time and permanent.