Senior Systems Administrator

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! Docker’s IT team builds and operates the infrastructure and services that enable a global, remote-first organization to move fast, stay secure, and remain highly collaborative. The Senior Systems Administrator is a technical expert and cross-functional leader who helps design, implement, and maintain the systems and networking environments that keep Docker reliable, compliant, and scalable as the company grows. This role leads major infrastructure projects, mentors peers, and influences company-wide IT policy and standards. As a Senior Systems Administrator at Docker, you will be responsible for the design, administration, hardening, and continual improvement of our compute, storage, virtualization, and networking environments. You will ensure operational excellence across Linux, macOS, Windows, and virtualized platforms; monitor performance and security; and lead complex infrastructure modernization projects. You will mentor and provide technical direction to other members of the IT team and partner with security, compliance, and engineering teams to deliver reliable, scalable services for a global workforce. RESPONSIBILITIES - Recommend and implement improvements to systems and network configurations; define hardware and software requirements for those changes. - Maintain and administer computer networks and related computing environments, including hardware, systems software, applications, and configurations. - Monitor systems, virtualization hosts, and peripheral devices for performance, reliability, and security; determine when adjustments are required and coordinate with technical support staff and vendors. - Troubleshoot and resolve hardware and software issues; diagnose faults, replace defective components, escalate complex issues appropriately, and research long-term solutions. - Design, configure, and implement tests across the IT stack (systems, endpoints), networking, and virtual infrastructure. - Manage identity and access tasks: resolve security/access issues and maintain the integrity of access control systems; leverage automation to improve services, and reduce overhead and errors. - Develop and maintain clear systems administration documentation, runbooks, and standard operating procedures. - Provide leadership, mentorship, and technical guidance to other administrators and cross-functional project teams. QUALIFICATIONS - 5+ years professional systems administration experience (or equivalent) in production environments. - Strong hands-on experience administering Linux, macOS, and Windows desktop/server environments and endpoint management. - Experience with large-scale infrastructure upgrades. - Familiarity with cloud storage, high-performance computing (HPC) environments, and hybrid on-prem/cloud deployments. - Strong knowledge of identity and access management, least-privilege models, and security controls (experience working with security and compliance teams is highly required). - Excellent troubleshooting, communications, and documentation skills; comfortable working directly with end users and technical stakeholders in complex environments. - Proven ability to lead cross-functional projects and mentor less-experienced team members. - Familiarity with CI/CD, IaC, SDLC, version control, and automation languages is highly desirable. - Experience with leveraging AI tools for scale, and championing and executing AI-forward initiatives, integrations, and tooling is highly desirable. WHAT TO EXPECT FIRST 90 DAYS - Drive completion of in-flight compliance and IAM initiatives; ensure IT services meet SOC 2 and internal access control expectations. - Take ownership of one or more strategic infrastructure projects and deliver measurable progress. - Establish clear runbooks and documentation for critical systems and DR plans, and demonstrate improved monitoring and alerting on high-value platforms. WHY YOU’LL ENJOY THIS ROLE - Work on a small, highly collaborative IT team that impacts every Dockhand in a fast-moving, remote-first company. - Opportunity to lead strategic infrastructure projects that increase scale, security, and operational efficiency. - A role that balances hands-on technical work, project leadership, and people mentorship. Docker does not offer visa sponsorship for this role. We use Covey as part of our hiring and / or promotional process for jobs in NYC and certain features may qualify it as an AEDT. As part of the evaluation process we provide Covey with job requirements and candidate submitted applications. We began using Covey Scout for Inbound https://getcovey.com/product/covey-scout-inbound on April 13, 2024. Please see the independent bias audit report covering our use of Covey here https://getcovey.com/nyc-local-law-144. Perks - Freedom & flexibility; fit your work around your life - Designated quarterly Whaleness Days plus end of year Whaleness break - Home office setup; we want you comfortable while you work - 16 weeks of paid Parental leave - Technology stipend equivalent to $100 net/month - PTO plan that encourages you to take time to do the things you enjoy - Training stipend for conferences, courses and classes - Equity; we are a growing start-up and want all employees to have a share in the success of the company - Docker Swag - 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. The more inclusive we are, the better our company will be. #LI-REMOTE