Lightsprint
Senior Software Engineer, Infrastructure
SF Bay Area / Remote (US) · Senior · Full-time · Posted Oct 29, 2026
About the job
Build and operate the infrastructure and application systems that launch, run, and retire isolated sandboxes for agent-driven software changes, including previews and engineering review workflows.
What you'll do
- Provision, configure, isolate, observe, and clean up reliable sandbox environments; improve preview startup and failure diagnosis.
- Design safe execution controls for permissions, secrets, networking, resource limits, and environment lifecycles.
- Operate and improve production systems with instrumentation, alerts, and runbooks, and connect agent changes to repositories, checks, and human review.
What they ask for
- Built and operated production infrastructure for developer tools, cloud applications, CI systems, or products running user or agent workloads.
- Hands-on experience with ephemeral sandboxes or remote execution.
- Understanding of isolation tradeoffs, including containers or VMs, secrets, networking, tenancy, and risks from untrusted code.
- Ability to build infrastructure-related application systems, diagnose production incidents using logs, metrics, and traces, and take responsibility for shipped systems.
Nice to have
- Experience with E2B, Blaxel, or a comparable platform; coding agents, browser-based development environments, or per-branch previews at scale.
- Familiarity with GitHub workflows, CI pipelines, dependency installation, or improving performance, resource use, cost, security, or compliance for short-lived compute workloads.
Tools
E2B, Blaxel, containers, VMs, GitHub
AI focus
Infrastructure for coding agents running software changes in isolated sandboxes.
Model-written summary · the original posting is authoritative