Staff Software Engineer, Backend Infrastructure

Stack

Responsibilities

• ▹Design, build, and maintain secure, maintainable, self-serve core infrastructure that engineering teams can operate independently
• ▹Lead the architecture and evolution of a modern ML training infrastructure, scalable and built for rapid experimentation
• ▹Build and operate a modern model serving architecture focused on reliability, cost efficiency, and low latency
• ▹Lead and own the low-latency voice interface and audio processing pipeline
• ▹Build developer tooling, server infrastructure, and data infrastructure that makes other engineers faster
• ▹Lead technical direction within your domain and raise the engineering bar across the team

Requirements

• ▹A strong systems thinker, equally comfortable leading technical direction and getting hands-on with implementation
• ▹7+ years of software engineering experience, with significant time in infrastructure, platform, or ML systems roles
• ▹Hands-on reliability engineering experience: observability, monitoring, deployment systems, loosely coupled architectures at scale
• ▹Proven track record of building and shipping services at scale
• ▹Kubernetes: significant production experience building, operating, and scaling clusters
• ▹Experience designing and shipping flexible domain models and APIs
• ▹A default toward automation with a track record of efficiency gains
• ▹Strong communication skills, writing clearly about tradeoffs

Nice to have

• ▹Infrastructure as Code at scale, preferably Terraform (CloudFormation, Pulumi, or Kubernetes-based approaches also welcome)
• ▹Experience leading, architecting, or contributing to a multi-stack, self-serve IaC system
• ▹PyTorch experience, especially model optimisation for serving
• ▹ML training or serving experience (TorchServe, Seldon, KServe, Ray Serve, or similar)
• ▹Experience building and leading large-scale distributed training and serving systems
• ▹Data engineering: pipeline design, dataset management, or data platform experience
• ▹Database design: complex schema design and query optimisation across relational and non-relational stores
• ▹Real-time communication systems: low-latency audio, video, or streaming infrastructure

Soft skills

What we offer

• ▹401(k) with employer match up to 3.5% of compensation
• ▹100% employer-paid health, vision, and dental coverage for you and your dependents
• ▹Unlimited PTO and sick time
• ▹Flexible spending account with employer matching up to $1,650/year
• ▹Guardian Employee Assistance Program (EAP)
• ▹Opportunity to share in the company's success through competitive stock options

About the company

Sesame is building a future where computers are lifelike — able to see, hear, and collaborate with us in natural, human ways. The team brings together founders from Oculus and Ubiquity6 alongside proven leaders from Meta, Google, and Apple, spanning deep hardware and software expertise.