Open to opportunities

Ronald Yanga

@ronaldyanga

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Senior software engineer specializing in scalable web applications, APIs, and CI/CD automation.

Philippines

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What I'm looking for

I am seeking senior engineering roles focused on scalable web platforms, strong CI/CD and testing practices, collaborative Agile teams, and opportunities to mentor while delivering high-performance systems.

I am a Senior Software Engineer with over 11 years building high-performance web applications using React, Vue, Angular, Ruby on Rails, Java Spring Boot, Python, and C#. I design scalable architectures, optimize APIs, and implement CI/CD pipelines to deliver secure, efficient software.

At Hubstaff I improved platform stability and user engagement, reduced API response times, and elevated uptime through background processing and search optimizations. At Twitter I supported high-traffic systems, deployed microservices, and tuned edge caching to accelerate global performance.

I bring strong DevOps and testing practices—Docker, GitHub Actions, Jenkins, RSpec, Jest, and Cypress—plus experience with cloud platforms (AWS, Azure, GCP), databases, and mobile integrations to help teams deliver reliable, performant products.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Hubstaff

Jan 2023 - Present (2 years 9 months)

Designed and maintained scalable web applications using Ruby on Rails and React, boosting platform stability and user engagement by 35% and supporting 1.2M+ monthly requests while improving uptime to 99.98%.

Ruby on Rails React PostgreSQL MySQL Sidekiq Apache SOLR RSpec GitHub Actions CI CD

Full Stack Developer

Twitter

May 2019 - Oct 2022 (3 years 5 months)

Developed and maintained high-traffic web applications using React, Node.js and Ruby on Rails supporting 50M+ daily active users, reduced network payloads 30% via GraphQL and improved client rendering by 45%.

React Node Ruby on Rails GraphQL Redis MemCached Docker Apache Mesos Akamai Fastly

Mid-Level Web Developer

Pointwest

Jun 2016 - Apr 2019 (2 years 10 months)

Built enterprise web systems with React and Spring Boot supporting 500K+ concurrent users, integrated TensorFlow modules for predictive analytics that cut manual review time by 50% and reduced infrastructure costs by 22%.

React Spring Boot Python TensorFlow Docker AWS Azure GCP)Jenkins RPA GCP

Web Developer

SearchWorks.PH

Nov 2014 - May 2016 (1 year 6 months)

Developed and maintained 20+ client websites using PHP, HTML5, CSS3 and JavaScript, improving load times by 35% and achieving 99% uptime across client sites through optimized LAMP deployments.

PHP HTML5 CSS3 JavaScript WordPress Joomla Bootstrap RESTful APIs MySQL

Education

Degrees, certifications, and relevant coursework

National University of Singapore

Bachelor's Degree in Computer Science, Computer Science

2010 - 2014

Completed a Bachelor's degree in Computer Science at the National University of Singapore with coursework in software engineering, algorithms, and systems.