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Checkr Logo Checkr · IT - Software Development

Senior Full Stack Software Engineer

United States, San Francisco Employment contract 173000.00 - 215000.00 USD / Year · Job Posted October 04, 2025
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Job Description

Checkr Trust is seeking a Senior Full Stack Software Engineer to join their team in San Francisco. The role involves designing, building, and launching new products, taking ownership of end-to-end application development, and building scalable APIs and architectures. Candidates should bring advanced knowledge in Ruby on Rails and JavaScript (React), strong technical skills, and a customer-focused approach.

Job Responsibility

  • 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

Requirements

  • BS/MS degree in either computer science or electrical engineering
  • have founded or held early roles at successful fast-paced startups
  • 6+ years of full stack software development experience
  • advanced knowledge in Ruby (Ruby on Rails)/ Javascript (React), or similar languages/frameworks
  • amazing product sense
  • experimentation mindset
  • experience building scalable technical architecture that can scale to 10mm+ users

Nice to have

  • experience with trust & safety, IDV, background check products or criminal data
  • experience with data analysis and processing
  • experience building and working with scrapers and scraping technology

What we offer

  • 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, home office stipend
  • working at a startup within a startup
  • lunch four times a week
  • a commuter stipend
  • abundance of snacks and beverages
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