Senior Software Engineer, Reliability

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Senior Software Engineer, Reliability in USA

Tin Can
Full time
Email

USA
08/25/2026
Report

Seattle, WA

Responsibilities

Own the reliability outcomes for customer-facing calls, voicemail, and activation, including connection, reachability, and audio quality.
Make customer-visible change management explicit through reviewed, tested, and reversible production changes.
Own deployment pipelines and the production-like staging tier used to validate application and call-path changes.
Load-test the activation chain ahead of seasonal peak traffic.
Build product-outcome observability, including funnels, SLOs, and meaningful alerting.
Drive incidents to root cause across SIP signaling, media systems, Lambda services, and Postgres.
Own incident reviews, failure ownership, runbooks, and regression tests.
Partner with the reliability PM to turn diagnosis into an actionable engineering backlog.

Requirements

5+ years building and operating production backend or distributed systems where downtime affects real users.
Strong AWS and infrastructure-as-code experience, including Terraform.
Experience owning reliability practices such as SLOs, alerting, load testing, and incident reviews.
Comfort with real-time and telephony systems, or strong willingness to learn SIP, RTP, and media behavior.
Fluency using AI for diagnosis, analysis, and testing.
Hands-on, scrappy approach to load testing and SIP trace analysis.
Clear written and verbal communication skills.
Collaborative, low-ego working style.
Preferred: production FreeSWITCH, Kamailio, carrier SIP trunking, seasonal peak load testing, Postgres at scale, consumer hardware fleet operations, or Grafana experience.

Benefits

Opportunity to work on technology intended to protect childhood and enable screen-free family communication.
Ownership of the company’s primary reliability objective and technical direction.
Small, high-trust, mission-driven team with meaningful influence from day one.
Room to explore ideas and challenge assumptions while building systems aligned with trust, simplicity, and care.

Salary: $175k - $195k/yr

Tin Can

Tin Can is a screen-free phone for kids that gives them the independence to call friends and family—without giving them a smartphone. Built like a modern landline, Tin Can connects over Wi-Fi and uses a simple mobile app for parents to control who can call in and out. There’s no browser, no app s...

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