Senior Site Reliability Engineer, Fleet Management

About the role

The Team Platform Engineering is the department within SRE that manages critical infrastructure and operational functions supporting the broader engineering organization. This includes multi-cloud-provider Kubernetes infrastructure, networking, load balancing, observability, and alerting systems. The Fleet Management team oversees the end-to-end lifecycle of our Kubernetes fleet and ensures cluster reliability and security.

Responsibilities

• Contribute to developing and maintaining a scalable and secure runtime environment on top of Kubernetes that supports product needs across MongoDB
• Provide internal support for our Kubernetes ecosystem, partnering with engineering teams to help them solve domain-specific problems
• Participate in a 24/7 on-call rotation to resolve critical issues
• Prioritize blameless post-mortems and dedicate engineering time to systemic fixes, ensuring you aren’t paged for the same issue twice

Requirements

• 6+ years of experience in software development and operating distributed systems
• Proficient in Go, Python, or a similar language, with a strong commitment to code quality and testing practices (writing unit, integration, and E2E tests)
• Deep experience using and extending containerization technologies, preferably Kubernetes
• A solid understanding of Linux operating system internals and networking concepts (e.g., filesystems, TCP/IP, DNS, TLS)
• A customer-focused mindset, treating internal developers as your primary users
• Strong operational ownership, including a track record of debugging complex production issues and driving them to resolution
• Prefer automation over manual processes ("allergic to ops work")

Qualifications

• Experience designing and implementing secure, multi-tenant runtime environments from first principles
• Expertise in cloud infrastructure platforms, including AWS, GCP, or Azure
• Proficiency in provisioning infrastructure using tools like Terraform, Crossplane, and AWS Controllers for Kubernetes (ACK)
• Advanced Linux systems internals and networking concepts specifically relevant to containers, such as namespaces and cgroups

Skills

• Proficiency with Kubernetes ecosystem tools such as Helm, Kustomize, Gatekeeper, Kyverno, and CRDs/Operators, CRI, CSI

Benefits

MongoDB offers a comprehensive benefits package, including:

• Equity
• Employee Stock Purchase Program
• Flexible Paid Time Off
• 20 weeks fully-paid gender-neutral parental leave
• Fertility and adoption assistance
• 401(k) plan
• Mental health counseling
• Access to transgender-inclusive health insurance coverage
• Health benefits offerings

Note: The base salary range listed below and the benefits in this paragraph are only applicable to U.S.-based candidates. MongoDB’s base salary range for this role in the U.S. is: $127,000—$249,000 USD.