Staff Software Engineer – Traffic Engineering
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Job Description
Staff Software Engineer responsible for designing traffic infrastructure supporting Toast's services and requests. Lead complex projects to enhance service connection, routing, and security at scale.
Responsibilities:
- Design, build, deploy, and operate the traffic infrastructure that carries every request across Toast — from the public edge through cloud networking down to service-to-service traffic
- Lead complex, multi-team projects that improve how Toast services discover, route to, secure, and observe one another
- Own the reliability of critical traffic infrastructure end-to-end, from design through on-call response, post-incident learning, and long-term hardening
- Design solutions that anticipate future scale and product needs (multi-region, new protocols, evolving service-mesh patterns) while making explicit tradeoffs
- Partner with the team on cloud networking, edge routing (Cloudflare), DNS, and IaC-driven automation
- Act as a force multiplier: mentor engineers, improve developer ergonomics for service owners, and make the platform easier and safer to operate
- Lead through influence across multiple teams and reporting lines, setting technical direction and driving adoption of platform standards without direct authority
- Leverage cutting-edge AI tools to enhance your development workflow, improve velocity, and help pioneer new approaches to building — contributing to a culture of innovation and productivity across the team
Requirements:
- Experience shipping and operating mission-critical production services
- Led complex projects that span multiple teams and have presented technical plans to both engineering and non-engineering audiences
- Have a growth mindset with an emphasis on improving yourself, the engineers around you, and your functional area
- Deep, hands-on experience in Kotlin or another JVM language (Java, Scala)
- Built or operated a service mesh in production — Envoy, Istio, Linkerd, Consul Connect, or similar
- Managed cloud infrastructure with Infrastructure as Code (Terraform or similar)
- Hands-on experience with DNS and edge routing through a CDN such as Cloudflare, Cloudfront, Akamai, or Fastly
- Working knowledge of TLS — termination, mTLS, and certificate lifecycle management at scale
- Comfortable working across the networking stack and are comfortable digging into different network layers
Benefits:
- Health insurance
- 401(k) matching
- Flexible work hours
- Paid time off
- Professional development opportunities
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