Principal Software Engineer

Lambda

. Own the multi-year technical strategy for Lambda's networking software roadmap covering backend GPU fabric, frontend networks, backbone, edge, and related tools, software, and services .

Posted 9/19/2026full-timeBellevue • California • United StatesLead💰 $372,000 - $550,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in cloud computing, systems engineering, and large-scale network infrastructure, with a strong focus on performance, scalability, and enterprise system architecture. Proven ability to lead technical strategy, mentor engineers, and drive complex projects from design to delivery.

Highest-signal resume keywords

Cloud ComputingLarge-Scale Network InfrastructureSoftware Defined NetworkingTechnical LeadershipPerformance Optimization

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Systems EngineeringDistributed Network SystemsData Center OperationsEnterprise System ArchitectureTechnical Design StandardsProblem DecompositionHPC/AI NetworkingNetwork MonitoringTelemetryCloud Provider Networking

Soft Skills

Excellent Communication SkillsMentoring

Tools & Technologies

AWSGCPOCIRoCEv2InfiniBandGPUDirect RDMA

Industry Keywords

Networking Software RoadmapTechnical DirectionMission-Critical ProjectsDay-2 OperationsOn-Call Rotation

Tech Stack

Tools & technologies

AWSCloudGoogle Cloud Platform

About the role

Key responsibilities & impact

Own the multi-year technical strategy for Lambda's networking software roadmap covering backend GPU fabric, frontend networks, backbone, edge, and related tools, software, and services
Set technical direction and standards for engineering design, development, and operations
Own high-level technical relationships with enterprise customers and guide mission-critical projects
Influence across teams using high-quality technical judgment
Resolve technical ambiguity across network, hardware, platform, and product teams
Work hands-on in code, networks, and customer use cases to solve difficult problems
Drive technical work end to end, from vision and high- and low-level design through delivery
Mentor engineers through design reviews and hiring
Operate built systems, including day-2 operations and the on-call rotation
Serve as senior technical voice with largest customers and incorporate learnings into Lambda's roadmap
Identify opportunities to improve customer availability and performance and develop new products

Requirements

What you’ll need

8+ years in relevant domains like cloud computing, systems engineering, and large-scale network infrastructure
Experience of design, build and operation of production large scale Data Center or Cloud networks
Experience building distributed network systems and services at scale
Experience of design, build and operation of Tier 1 software defined networking services
Have led through implementation and launch of large production-scale software services projects
Functionally decompose complex problems into simple, straight-forward solutions
Fully and completely understand system inter-dependencies and limitations
Possess expert knowledge in performance, scalability, enterprise system architecture, and engineering best practices
Have experience with cloud providers networking (such as AWS, GCP, OCI)
Excellent written and verbal communication skills
Nice to have: Knowledge of HPC/AI networking, including RoCEv2, InfiniBand, GPUDirect RDMA, and collective communication at scale
Nice to have: Experience with network characteristics of large distributed training workloads
Nice to have: Experience with software defined networking
Nice to have: Familiarity with network monitoring and telemetry
Nice to have: General awareness of datacenter, backbone, internet protocols and technology
Must be able and willing to work onsite at the Bellevue or San Francisco office 4 days a week
Must be legally authorized to work in the United States

Benefits

Comp & perks

Generous cash & equity compensation
Health, dental, and vision coverage for you and your dependents
Wellness and commuter stipends for select roles
401k Plan with 2% company match (USA employees)
Flexible paid time off plan