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Senior Software Engineer

Lightsprint
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Hybrid (San Francisco, CA)$150k - $200kFull-timePosted 3w ago

About the role

Senior software engineer role at LightSprint focusing on building and operating sandbox environments for agent-driven software changes, bridging application code and cloud infrastructure.

Responsibilities

  • Build reliable sandboxes. Improve how environments are provisioned, configured, isolated, observed, and cleaned up as agents work on customer codebases.
  • Make previews dependable. Help teams get working preview environments quickly, diagnose setup failures, and understand what happened when a run goes wrong.
  • Design for safe execution. Consider permissions, secrets, network boundaries, resource limits, and lifecycle controls for code that runs in isolated environments.
  • Connect the work to engineering review. Build and maintain the paths between an agent’s changes, the repository, checks, and the human review process.
  • Operate what you build. Add instrumentation, alerts, and runbooks to investigate failures and improve reliability and cost over time.
  • Work across the product. Partner with engineers and product teammates to turn rough workflows and customer problems into clear technical decisions.

Qualifications

  • You’ve built and operated production infrastructure for developer tools, cloud applications, CI systems, or other products that run user or agent workloads.
  • Hands-on experience with ephemeral sandboxes or remote execution. Experience with E2B, Blaxel, or a comparable platform.
  • Understanding of isolation and its tradeoffs, including containers or VMs, access to secrets, networking, tenancy, and what can fail when untrusted code runs.
  • Ability to build the application-side systems around infrastructure, such as APIs, job orchestration, state management, and integrations with code repositories.
  • Ability to diagnose production incidents using logs, metrics, and traces, and turn what you learn into simpler, more reliable systems.
  • Ability to write clear technical plans, make pragmatic tradeoffs, and take responsibility for the behavior of a system after it ships.

Skills

Required:Production infrastructure for developer tools / cloud applications / CI systemsEphemeral sandboxes / remote execution
Last updated Oct 25, 2026. Interested? Apply on the company site.
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About Lightsprint

Collaborative product development with cloud agents

Lightsprint is a collaborative platform for software teams to plan visually, preview live and ship with an army of cloud agents. Your whole team, including non-engineers, can now ship end to end reliably. The company is founded by Ben Ong, an AI investor who previously scaled AI products at SEA Group (NYSE: SE) and Temasek ($300B fund), Benedict Chan who was VP Engineering at Chainlink and CTO at BitGo (NYSE:BTGO), and Heng Hong Lee who built Facebook Messenger in 2013 and was Director of Engineering at Fazz (YC S17).

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