Senior Full Stack Engineer at itsacheckmate-dot-com

Compensation

$180,000 – $190,000/yr

Setup: Remote
Type: Full-time
Level: Senior
Posted: May 6, 2026

Description

Checkmate is seeking a Senior Full Stack Engineer to develop, operate, and enhance their web-based restaurant-tech SaaS platform utilizing AI technologies. The role involves close collaboration with the Product and Engineering teams to implement innovative features, software enhancements, and architectural flexibility. Ideal candidates will possess extensive experience leading enterprise-level Ruby on Rails applications, capable of decomposing intricate challenges into iterative deliveries leveraging AI advancements.

Required Skills

Ruby on Rails
React.js
AWS
GraphQL APIs
SQL queries
Sidekiq
PostgreSQL/MySQL databases
APM and observability tools
technical debt reduction
CI/CD pipelines

Additional Information

Required Previous Experiences: 6+ years of experience building enterprise level applications using Ruby on Rails.
3+ years working with [React.js] or a related modern javascript frameworks
3+ years working working within a 30+ team member sized engineering team
3+ years working 100% remote and a desire to continue working remotely
3+ years developing and operating applications on AWS
2+ years developing using AI coding agents including Claude Code or Codex
Preferred Qualifications: Experience working using Docker locally
Experience running enterprise level production workload apps on AWS
Experience integrating with RESTful and GraphQL APIs
Experience write raw SQL queries in a relational database
Experience building asynchronous background job process across multiple tools/frameworks
Experience with observability tools like Datadog, Sentry, or New Relic
Experience writing automated unit tests having > 60% code coverage
CI/CD development experience creating Github Actions
Experience modernizing legacy Ruby on Rails applications
Exceptional at translating product requirement documents into detailed technical specifications