# Senior Software Engineer, Foundational Infrastructure & Networking at Lyft

- Company: Lyft
- Status: Open
- Workplace: On-site
- Location: Toronto, Canada
- Level: Senior
- Discipline: Backend
- Employment: Full-time
- Posted: 2026-10-05
- Skills: Infrastructure
- Apply: https://app.careerpuck.com/job-board/lyft/job/8857056002?gh_jid=8857056002

## Description

At Lyft, our purpose is to serve and connect. Lyft’s Infrastructure organization builds the high-scale foundation that every engineer at Lyft relies on to ship safe, performant, and reliable services.
 As a Senior Software Engineer on the Foundational Infrastructure & Networking team , you will own the core routing, service mesh, and control planes that power hundreds of microservices processing millions of rides daily. This is an IC role with massive engineering leverage: your technical architecture, systems design, and performance optimizations will directly amplify the velocity of every software engineer across Lyft while ensuring platform resiliency at scale.
 Responsibilities
• Architect & Scale Core Networking: Design, build, and optimize our service mesh, ingress/egress infrastructure, and edge routing capabilities using Envoy Proxy and custom control planes on AWS.
• Optimize High-Throughput Control Planes: Enhance load-balancing algorithms, service discovery, and dynamic scaling mechanisms across high-concurrency data and control planes running on Kubernetes.
• Drive Systems Reliability & Observability: Operationalize deep telemetry, metrics, and distributed tracing across our networking stack to drastically reduce mean-time-to-detect (MTTD) and resolution (MTTR).
• Hands-on Production Debugging: Lead complex technical investigations into cross-stack incidents spanning kernel parameters, cloud VPC network layers, DNS, and distributed microservice protocols.
• Technical Leadership & Mentorship: Elevate engineering rigor through RFC reviews, technical vision, inciden

More Lyft roles: https://deviantjobs.com/companies/lyft