Mickey Ryan
@mickeyryan
Senior Software Engineer specializing in scalable microservices and full-stack SaaS platforms.
United StatesWhat I'm looking for
I am a Senior Software Engineer with 9+ years of full-stack experience building scalable SaaS platforms across startups and enterprise environments, with deep expertise in microservices architecture, REST APIs, and Ruby on Rails.
I have led large refactoring and consolidation initiatives that cut deployment time by 60% and scaled systems to support hundreds of thousands of concurrent users, while optimizing databases (MySQL/PostgreSQL) and improving API performance and uptime.
I mentor engineering teams, run technical design reviews, and implement robust testing and CI/CD practices to deliver production-ready services, emphasizing elegant architecture, code quality, and measurable business impact.
Experience
Work history, roles, and key accomplishments
Senior Software Engineer
Armis
Oct 2024 - Present (1 year 8 months)
Architected microservices with Ruby on Rails and React.js to support 100K+ concurrent users and 99.95% uptime; consolidated 15+ repositories into unified services, reducing deployment time from 45 to 12 minutes and improving developer velocity by 55%.
Engineered Node.js microservices and React.js dashboards processing 2M+ metrics/sec with 99.99% uptime; optimized PostgreSQL queries to cut latency from 800ms to 240ms and reduced database costs by $180K annually.
Software Engineer
Avalara
May 2017 - Mar 2022 (4 years 10 months)
Developed Ruby on Rails microservices for tax SaaS processing 50M+ transactions/year with 99.95% reliability; optimized MySQL queries to reduce execution time by 55% and migrated from monolith to microservices, cutting deployment complexity by 60%.
Built backend services and REST APIs with Node.js and Python for an enterprise cloud platform serving 1M+ users; optimized MySQL queries to improve performance by 50% and supported 5x increase in concurrent load.
Education
Degrees, certifications, and relevant coursework
University of North Carolina at Chapel Hill
Bachelor of Computer Science, Computer Science
2012 - 2016
Completed a Bachelor of Computer Science focusing on software engineering fundamentals, algorithms, and systems from 2012 to 2016.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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