Senior Software Engineer (.NET) - Remote in Surrey

Docker has been one of the most loved brands in developer tooling, trusted by more than 20 million monthly users and over 20 billion container image pulls. From solo founders to the world's largest companies, developers rely on Docker to build, share, and run their applications across our suite of products including Docker Desktop, Docker Hub, and Docker Scout. We are a globally distributed, remote-first team building the tools that define how software gets built and delivered. As AI agents redefine software development, Docker is at the center of that shift, providing the sandboxed environments, verified images, and secure infrastructure that make autonomous workflows trustworthy by default. The Docker Sandboxes team is building the runtime that lets AI coding agents run safely on a developer's machine: disposable, isolated microVM sandboxes that each get their own Docker daemon, filesystem, and network. This is the core of Docker's sbx product: developers can give an agent the autonomy it needs to get real work done without it ever touching the host, and tear the whole environment down when it's finished. The successful candidate is a technical, product-minded engineer with deep experience building secure, isolated runtime environments (sandboxes, containers, or VMs) and a track record of shipping and owning that kind of infrastructure in production at scale. They can drive clarity and consensus on hard, ambiguous problems that cross team and component boundaries, raise the bar for engineering quality wherever they work, thrive in a remote-first environment, communicate clearly across time zones, work with our users, while bringing curiosity and craftsmanship to hard problems. 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. Engage with the open source and agentic development community around sandboxing, MCP, and related ecosystems. 8+ years of software engineering experience, with 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: how coding agents work and how tools like Claude Code, Codex, or similar agents interact with their environment. ~ Comfortable working with a high degree of autonomy in a remote-first environment. Build an understanding of the products we are shipping and our near-term technical priorities. Lead the design and development of a significant improvement or feature of the local sandboxes stack. Engage with our open source project and the relevant upstream communities. Deliver measurable improvements to the correctness and performance of sandboxes. Become a recognized technical owner of key parts of the codebase and a go-to technical leader for the local runtime. Help us define the longer-term technical strategy for the filesystem layer in a way that fits with Product and Business goals, and rally the team behind it. Docker considers visa sponsorship on a case-by-case basis based on business needs. Compensation & Equity Home office setup; 16 weeks of paid Parental leave (after 6 months of employment) ~ Technology stipend equivalent to $100 USD net/month ~ PTO plan that encourages you to take time to do the things you enjoy ~ Training stipend for conferences, courses and classes ~ Medical benefits, retirement and holidays vary by country ~ Remote-first culture, with offices in Seattle and Paris Docker embraces diversity and equal opportunity. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills. LI-REMOTE