Billy Cropley

Summary

Experienced software engineer with 6+ years of expertise in Ruby on Rails and related frameworks. Specializes in healthcare, fintech, and logistics applications. Skilled in full-stack development and API integration. Recently promoted from Senior Software Engineer to Team Lead due to demonstrated leadership and technical expertise.

Professional Experience

Lead Server Engineer | Cognoa, Oct 2023 – Present

• Promoted to Lead Server Engineer within six months, entrusted with overseeing critical projects, team coordination, and engineering team priorities.
• Built a time-critical SAML-based SSO system in under two weeks, supporting secure authentication for thousands of users.
• Designed a custom CRM with Twilio and Mailchimp integrations, reducing dependence on Salesforce and saving $100,000 annually.
• Implemented persistent dashboard filters for clinician portal, improving search functionality and reducing load times by 15%.
• Maintained five critical applications concurrently, overseeing major Ruby and framework updates, while proactively addressing gem security vulnerabilities.

Software Engineer | Airspace, Oct 2021 – Aug 2023

• Specialized in logistics for high-priority shipments, such as organ transplants and oversized airplane components. The company secured a $70 million Series D in May 2022.
• Redesigned public API for asynchronous processing, enhancing platform stability and reducing system load by over 20%.
• Developed a manual self-testing system, enabling integrators to simulate order movements, cutting integration time by over 15%.
• Acted as the primary liaison for API integrations with high-value clients, contributing to over $8 million in revenue within a specialized 4-member team.

Software Engineer/ Project Technical Lead | PrimeTrust, Jul 2019 - Oct 2021

• Engaged in financial services API development, focusing on compliance, custody, and payment solutions; company closed a $64 million Series A in July 2021.
• Engineered a multi-asset trading system, handled $6.6B in trades within the first year.
• Developed a 24/7 instant payment system, facilitating transfers exceeding $94.2 million.
• Automated PDF statement generation, saving $140,000 yearly for 2.3 million accounts.
• Acted as a technical liaison to external stakeholders, recovering over $14 million in missing funds, and lowering operational costs and number of required support tickets.
• Crafted an interview technical challenge to assess proficiency in RESTful API integration and problem-solving, leading to a 30% increase in successful candidate retention.

Education

Bachelor of Arts, Focus in Film Editing | University of Nevada, Las Vegas, 2007 - 2011