Principal Software Engineer, Docker Agents (London)

At Docker, we make app development easier so developers can focus on what matters. Our remote-first team spans the globe, united by a passion for innovation and great developer experiences. With over 20 million monthly users and 20 billion image pulls, Docker is the #1 tool for building, sharing, and running apps—trusted by startups and Fortune 100s alike. We’re growing fast and just getting started. Come join us for a whale of a ride!We are looking for a Principal Software Engineer (Docker Agents) to join Docker’s AI engineering team to build the future of containerized AI agents. Docker containers are the perfect vehicle to host and run AI agents—providing isolation, portability, and reproducibility. You’ll be working on cagent, our open-source project (https://github.com/docker/cagent), and expanding on it to enable developers to build, deploy, and scale intelligent agents using Docker’s container technology.This is a greenfield opportunity to shape how developers leverage containers for AI agents at massive scale. You’ll define the technical vision, lead architecture decisions, and partner with engineers and leaders across Docker to bring containerized agent capabilities into Docker’s developer experience.ResponsibilitiesTechnical Leadership & Architecture: Define and drive the long-term technical strategy for Docker’s containerized agent platform, including core primitives, APIs, and extensibility patternsBuild Containerized Agent Systems: Design and implement systems that leverage Docker containers as the ideal runtime for AI agents, ensuring isolation, scalability, and portabilityExpand cagent: Maintain and evolve the open-source cagent project, adding new capabilities for containerized agent deployment, orchestration, and lifecycle managementAgent Runtime Development: Build robust infrastructure for packaging, deploying, and managing agents in containers across local and cloud environmentsEvaluation & Testing: Define evaluation frameworks to measure agent quality, reliability, and production readiness; plus the deployment effectiveness of containerized runtimesReliability & Operability: Establish standards for observability, performance, and operational excellence; lead critical production decision-making and incident learnings as neededRapid Prototyping: Iterate quickly on new agent capabilities and deployment patterns, moving from concept to production efficientlyOpen Source Community: Engage with the cagent community, review contributions, and help grow the ecosystemCross-functional Collaboration: Lead cross-functional technical discussions and influence architectural decisions across Docker’s AI initiatives (including sister teams and platform efforts)Mentorship & Enablement: Mentor senior engineers, raise the bar through design reviews, and accelerate team execution through clear technical direction and coachingBachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experienceQualifications10+ years of software engineering experience, including 3+ years in technical leadership roles (Staff/Principal level or equivalent scope)Go Expertise: Strong proficiency in Go (this is absolutely required) - Docker’s primary language for backend systemsAI/ML Knowledge: Practical experience with large language models (LLMs) and agent development patternsSystem Architecture: Proven ability to design scalable, distributed systems in production environmentsContainer Technology: Deep understanding of Docker, containerization best practices, and container orchestrationCloud/Platform Depth: Experience building and operating platform services with strong foundations in observability, CI/CD, and security principlesOperational Excellence: Experience operating and evolving high-availability production systems with a focus on reliability and performanceInfluence & Communication: Exceptional communication skills and ability to influence across technical and business domainsAI Frameworks: Experience wi ... (truncated, view full listing at source)