Senior Software Engineer, Sandboxes (London or East Coast Preferred)

The role

The Docker Sandboxes team is building a runtime for AI coding agents using disposable, isolated microVM sandboxes. You will design and lead improvements to the sandboxes product, including agent integration and developer workflows.

What you will do

• Design, develop, and lead improvements to the sandboxes product
• Investigate and resolve correctness, performance, and stability issues in the agent integration layer
• Drive the reliability and performance of sandbox creation, session management, and teardown
• Collaborate with peers, Product, and adjacent teams to evolve the architecture
• Mentor engineers on the team and set the bar in design reviews and code reviews
• Engage with the open source and agentic development community
• Participate in on-call rotations and respond to critical stability issues
• Document work clearly and share knowledge

Required qualifications

• 8+ years of software engineering experience
• Demonstrated technical leadership on production systems at scale
• Bachelor’s degree in Computer Science, Engineering, or a 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
• Ability to reason about isolation and security boundaries
• Experience driving architecture and technical strategy across multiple engineers or teams
• Strong written and verbal communication skills
• Comfortable working with a high degree of autonomy in a remote-first environment

Nice to have

• Familiarity with how coding agents like Claude Code, Codex, or similar agents interact with their environment

Benefits

• Remote-first by design
• Flexibility to manage your schedule
• Generous PTO
• Designated quarterly Whaleness Days
• Designated end-of-year Whaleness break
• Home office support
• Technology stipend equivalent to US$100 net per month
• Annual stipend for conferences, courses, certifications, and continued learning
• 16 weeks of paid parental leave after six months of employment
• Equity for all full-time employees
• Medical, retirement, and paid holidays vary by country
• Docker swag

Before you apply

• Docker considers visa sponsorship on a case-by-case basis based on business needs
• Docker may use AI-assisted tools during the recruiting process
• Candidates will be invited to opt in to interview recordings

About the company

Docker is a globally distributed, remote-first team building tools that define how software gets built and delivered. Their products include Docker Desktop, Docker Hub, and Docker Scout.