Open to opportunities

Mickey Ryan

@mickeyryan

Message

Senior Software Engineer specializing in scalable microservices and full-stack SaaS platforms.

United States

Message

What I'm looking for

I seek senior-level roles building and scaling microservices-driven SaaS products, with opportunities to lead technical design, mentor engineers, and improve system performance and deployability.

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

Current

Senior Software Engineer

Current

Armis

Oct 2024 - Present (1 year 2 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%.

Ruby on Rails React Microservices REST APIs Jest RSpec CI CD

Senior Software Engineer

New Relic Inc

Jun 2022 - Apr 2024 (1 year 10 months)

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.

Node React PostgreSQL REST APIs Microservices Redux Performance Tuning Observability

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%.

Ruby on Rails MySQL Microservices RSpec Jest Database Optimization CI CD

Software Engineer

IBM

Sep 2016 - May 2017 (8 months)

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.