Raymond Oyondi | Freelance Software Engineer

Technical Arsenal

Python, Java, C, C++, Ruby, Go, Dart, Rust, JavaScript, TypeScript

React, Node.js, Flutter, Rails, Next.js

AWS, Docker, Firebase, Kubernetes, Jenkins

Postgres, Redis, DynamoDB

Cross-platform messaging app using Flutter, Dart, and Firebase, handling 100+ concurrent users with optimized performance

Flutter Firebase

Full-stack Ruby on Rails app featuring Hotwire for real-time updates and Active Storage cloud integration.

Rails Postgres

Time-series forecasting platform using TensorFlow and Next.js, achieving 85% prediction accuracy.

TypeScript TensorFlow

Oct 2025 - Jan 2026

Architected and deployed scalable full-stack applications using Next.js, TypeScript, and Ruby on Rails, while engineering high-performance backend microservices in Rust, Go, and Python that successfully reduced page load latency by 25% through memoization and server-side rendering techniques
Optimized REST APIs with Node.js, utilizing Redis for session management and Postgres for complex relational data persistence, resulting in a 15% improvement in end-to-end data flow efficiency
Streamlined developer velocity by automating CI/CD pipelines via Jenkins and Docker, leveraging Kubernetes for container orchestration and horizontal pod autoscaling to achieve a 40% reduction in deployment overhead for Ruby on Rails and Node.js environments
Enhanced platform security by implementing robust security protocols and OAuth2 authentication, ensuring 100% data privacy compliance across AWS and DynamoDB cloud infrastructures