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Senior Software Engineer

Senior Full Stack Engineer building scalable APIs and end-to-end applications for risk insights in Checkr Trust. Requires 6+ years experience with Ruby/Rails, JavaScript/React, startup background, and BS/MS degree.

185k – 218kSan Francisco, CAFullstack EngineeringHybrid6+ YOE

About the role

What you'll do:

  • Work closely with customers, engineers, and leaders to design, build, and launch new products.
  • Take full ownership of the entire process of developing end-to-end applications – from shaping the idea to delivering the finished application.
  • Build and improve APIs, including integrating with third-party services to expand what our products can do.
  • Embrace a customer-centric, product-first approach – partner directly with customer success, customers and stakeholders to better understand their needs and turn those into useful features.
  • Keep code reliable and easy to maintain with solid testing, thoughtful reviews, and good practices.
  • Run and measure product experiments, using what you learn to guide future development.
  • Building scalable APIs and asynchronous event-based architecture that can reliably handle very high traffic.

What you bring:

  • BS/MS degree in either computer science or an engineering discipline.
  • Have founded or held early roles at successful fast-paced startups.
  • 6+ years of full stack software development experience.
  • Advanced knowledge in Ruby (Rails), Javascript (React), or similar languages/frameworks.
  • Experimentation mindset: autonomy and empowerment to validate a customer need, get team buy-in, and ship a rapid MVP.
  • Early-stage approach: comfort with ambiguity, balancing speed and perfection, and the confidence and curiosity to help guide product direction.
  • An A-player mindset with a strong bias for action: you raise the bar, move with urgency, stay resilient through ambiguity, and take ownership to deliver meaningful outcomes.

Nice to have:

  • Experience building scalable technical architecture that can scale to 10mm+ users (including observability tooling, container orchestration, etc.).
  • Background in trust & safety, IDV, background check products or criminal data.
  • Expertise in data analysis and processing.
  • Experience building and working with scrapers and scraping technology.

What you get:

  • A fast-paced and collaborative environment.
  • Learning and development allowance.
  • Competitive compensation and opportunity for advancement.
  • 100% medical, dental, and vision coverage.
  • Up to 25K reimbursement for fertility, adoption, and parental planning services.
  • Flexible PTO policy.
  • Monthly wellness stipend.
  • Working at a startup within a startup.

Skills

Ruby on RailsJavaScriptReactAPIsEvent-Based ArchitectureContainer OrchestrationObservability ToolingScraping TechnologyData Analysis

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