Requirements

8+ years of software engineering experience with demonstrated technical leadership on production systems at scale.
Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent practical experience.
Experience building developer tools, desktop applications, or runtime infrastructure used directly by developers.
Familiarity with the agentic software development ecosystem, including how coding agents like Claude Code or Codex interact with their environment.
Ability to reason about isolation and security boundaries, understanding what a sandbox should and shouldn't expose, and how to make safe defaults obvious to users.
Experience driving architecture and technical strategy across multiple engineers or teams.
Strong written and verbal communication skills.
Comfortable working autonomously in a remote-first environment.

What You'll Be Doing

Design, develop, and lead improvements to the sandboxes product across agent integration, tool permissions, and developer-facing workflows.
Investigate and resolve correctness, performance, and stability issues in the agent integration layer across macOS, Windows, and Linux.
Drive the reliability and performance of sandbox creation, session management, and teardown for AI agent workloads.
Collaborate with peers, Product, and adjacent teams to evolve the architecture as requirements grow.
Mentor engineers and set the bar in design and code reviews.
Engage with the open source and agentic development community around sandboxing and related ecosystems.
Participate in on-call rotations and respond to critical stability issues affecting users.
Document work clearly and share knowledge with the team.
Build understanding of codebase, products, and priorities; deliver fixes and improvements in the first 30 days.
Lead significant feature development, engage with open source projects, and shape technical direction within first 90 days.
Deliver measurable improvements, become a recognized technical leader, and help define long-term technical strategy within the first year.

Remote-first by design, with offices in Seattle and Paris for connection and collaboration.
Flexible schedule that fits your life.
Generous PTO, quarterly Whaleness Days, and end-of-year Whaleness break for time to recharge.
Home office support to set up a comfortable workspace.
Technology stipend equivalent to US$100 net per month.
Annual stipend for learning and development including conferences, courses, and certifications.
16 weeks of paid parental leave after six months of employment.
Equity participation for all full-time employees.
Comprehensive benefits including medical, retirement, and paid holidays (varies by country).
Docker swag to show off your affiliation.