Ronan Murphy
Ronan Murphy

Senior Software Engineer

Actively looking · Member since 20 Oct 2025
Message
Location
Ireland
Desired salary
from 30 USD/hourly
Work preference
Full Time
Experience level
Not set

About

Professional summary

I am a Senior Software Engineer with over a decade of experience in designing, developing, and optimizing high-performance web applications. My expertise lies in building scalable architectures, enhancing performance, and implementing security best practices. I am proficient in Java, Spring Boot, React, JavaScript, Next.js, Docker, MySQL, Git, PHP, and cloud-native microservices.

Throughout my career, I have demonstrated the ability to improve user retention significantly and contribute to substantial annual revenue growth. I am passionate about mentoring junior engineers, fostering collaboration, and driving technical innovation within teams. I enjoy solving complex problems and delivering high-quality, scalable software solutions that align with business objectives.

In my recent role at Tyk, I led the design and optimization of scalable web applications serving over one million users, revamped CI/CD pipelines to reduce deployment times drastically, and architected microservices infrastructure to improve modularity and reduce downtime. I have integrated Java-based microservices for internal tooling and maintained legacy Java modules to unify access management.

Previously, I worked at NetWatch Global, where I engineered scalable systems for a high-traffic e-commerce platform, led front-end modernization initiatives, and enhanced cloud infrastructure reliability using AWS and Docker. I have also contributed to backend migrations and developed advanced caching mechanisms to improve real-time analytics.

Earlier in my career at Capventis and Cesanta, I designed and maintained mission-critical web applications, implemented scalable microservices architectures, and developed reusable UI components. I have experience working with various frontend and backend technologies, improving application performance, and supporting accessibility initiatives.

I am committed to continuous learning and staying updated with the latest technologies to deliver innovative solutions. I thrive in cross-functional teams and enjoy aligning engineering efforts with key business goals to maximize impact.

Skills

25 capabilities

Experience

Career history

Senior Software Engineer Tyk

Led design, development, and optimization of scalable web applications using React.js, Next.js, Node.js, and Django for over one million users. Revamped CI/CD pipelines with GitHub Actions, Travis, and Docker reducing deployment times by 80% and tripling release frequency. Architected microservices infrastructure enhancing modularity and reducing downtime by 25%. Integrated Java-based microservices (Spring Boot) for internal tooling and auth APIs. Maintained legacy Java modules handling SSO and permissioning logic. Conducted over 500 code reviews and introduced test-driven development increasing team productivity by 40%. Collaborated with product and design teams to improve UI/UX, increasing user engagement by 50%. Developed cost-efficient serverless solutions on AWS reducing infrastructure costs by 35%. Integrated security best practices including authentication and data encryption. Mentored junior engineers and engaged in cross-functional strategy discussions.

Senior Full-Stack Developer NetWatch Global

Engineered scalable systems for a high-traffic e-commerce platform optimizing API performance by 30% with microservices architecture using Node.js, Express, and AWS Lambda. Led front-end modernization migrating to React and Redux decreasing load times by 25%. Migrated backend reporting tools from Python to Java + Spring Boot. Developed advanced caching mechanism using Redis and PostgreSQL reducing query latency by 40%. Enhanced cloud infrastructure reliability with AWS, Docker, and Jenkins enabling zero-downtime deployments. Mentored junior developers and collaborated with product and design teams to accelerate feature delivery by 20%.

Full-Stack Developer Capventis

Designed and maintained mission-critical web applications using Python (Django, Flask) and JavaScript ensuring 99.9% uptime and reducing response times by 50%. Implemented scalable microservices architecture decreasing operational overhead by 40% and reducing deployment failures by 35%. Optimized application performance with advanced caching strategies reducing average load time from 4s to 1.5s. Developed 15+ RESTful APIs improving data flow efficiency by 45%. Collaborated with Java backend teams (Spring Boot and Kotlin) to define API contracts and error handling. Built AI-powered fraud detection tool reducing fraudulent transactions by 70%.

Frontend Developer Cesanta

Built responsive, high-performance web applications improving page load speed by 50% and mobile responsiveness by 80%. Collaborated with senior developers to optimize frontend performance. Migrated legacy frontend systems to React and TypeScript reducing bug reports by 35%. Assisted in migrating React component library to TypeScript improving code maintainability and reducing runtime errors by 30%. Developed over 30 reusable UI components enhancing development efficiency and reducing build time by 40%. Implemented automated testing frameworks reducing frontend bugs by 45% and increasing code coverage by 60%. Contributed to accessibility initiatives supporting WCAG compliance and expanding user reach by 20%.

Education

Learning history

Trinity College Dublin

Bachelor's degree in Computer Science

Algorithms & Data Structures, Software Engineering, Cloud Computing

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