Senior Software Engineer - Secure Sandbox Runtime (Remote)

Docker, Inc.

Greater London

Hybrid

GBP 119,000 - 193,000

Full time

14 days+

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Benefits offered by this job

Remote-first by design

Flexible schedule

Generous PTO

Home office stipend

Tech stipend

Conference stipend

Parental leave

Equity for all full-time employees

Comprehensive benefits

Docker swag

Job summary

Docker, Inc. is seeking an experienced software engineer to lead secure, isolated runtime environments (sandboxes) and production systems at scale.

You will drive architecture across teams, mentor engineers, and collaborate with open source communities from a remote-first setting. The role emphasizes security boundaries, tooling for developers, and a strong user-centric approach, with international collaboration across time zones and a remote-first culture.

Qualifications

8+ years of software engineering experience, with demonstrated technical leadership on production systems at scale.
Experience building developer tools, desktop applications, or runtime infrastructure used directly by developers.
Familiarity with the agentic software development ecosystem: how coding agents work and how tools like Claude Code, Codex, or similar agents interact with their environment.
Ability to reason about isolation and security boundaries: 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 with a high degree of autonomy in a remote-first environment.

Responsibilities

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 on the team and set the bar in design reviews and code reviews.
Engage with the open source and agentic development community around sandboxing, MCP, and related ecosystems.
Participate in on-call rotations and respond to critical stability issues affecting users.
Document your work clearly and share knowledge with the rest of the team.