Senior Systems Engineer - Traffic Management

Responsibilities

• Deliver traffic-platform milestones from problem definition through rollout and post-release follow-up.
• Own complex infrastructure problems and propose solutions balancing reliability, performance, security, and effort.
• Design for failure, implement testing and observability, respond to incidents, and drive preventative follow-up work.
• Collaborate with engineering, product, and partner teams to create technical plans and milestones.
• Use and help adopt AI tools and agents for investigation, coding, solution exploration, and automation.
• Create technical documentation and runbooks and share knowledge through reviews and technical sessions.
• Support engineer growth through code reviews, design discussions, pairing, and collaboration.
• Participate in support and on-call routines and use incidents, tickets, and metrics to improve the platform.

Requirements

• Experience operating large-scale, high-performance synchronous distributed systems in the cloud.
• Hands-on experience with load balancers, reverse proxies, TLS/mTLS, routing, and metrics, logs, and traces.
• Experience with Kubernetes-based infrastructure, Infrastructure-as-Code, deployment strategies, and DNS configuration.
• Experience using AI tools and agents in daily engineering workflows while validating outputs for quality and safety.
• Experience leading infrastructure-platform projects from design through production launch and stabilization.
• Experience with Istio, Linkerd, Envoy-based solutions, Finagle, or other service-mesh technologies.
• Production experience with AWS networking and compute primitives including ALB/NLB, security groups, VPC, Route 53, and IAM.
• Hands-on experience with Pulumi or Terraform for cloud and Kubernetes infrastructure.
• Experience building platform capabilities, shared libraries, abstractions, SDKs, or internal tooling for other engineers.

Benefits

• Opportunity to earn equity at Nu.
• Medical, dental, vision, life, and AD&D insurance.
• Extended maternity and paternity leave.
• Access to Nucleo learning courses and the NuLanguage language-learning program.
• NuCare mental health and wellness assistance.
• 401(k), health savings account, and flexible spending account plans.
• Work-from-home allowance.
• Relocation assistance if applicable.
• Hybrid work model requiring attendance in the office at least two to three times per week.
• Locations include Durham, Miami, Palo Alto, and Washington, DC.