Developed SaaS apps for international clients. Led new module development, improved test coverage (RSpec), implemented PostGIS, and mentored team in Ruby best practices.

Led development of data-intensive SaaS modules, implemented RESTful APIs, microservices, and PostGIS for geospatial data. Reduced technical debt by 30% and mentored junior developers.

Maintained and upgraded microservices, improved performance and security, ensured smooth deployments, and collaborated with an international Agile team.

Upgraded and maintained Ruby on Rails microservices, led migration to newer Rails versions, optimized code, and resolved compatibility issues in a Scrum/Agile environment.

Spearheaded API integration, developed payment features, optimized database queries, and implemented asynchronous operations.

Led API integration, developed payment processing for 5,000+ daily transactions, optimized queries, and implemented background job processing.