# Cathal Kenneally

> Software Engineer

Location: London, England, United Kingdom
Profile: https://flows.cv/cathal

Full Stack Developer with 6+ years of experience, I have honed my skills in building and optimising web applications that are scalable & highly performant. My journey has equipped me with a versatile skill set, allowing me to navigate between frontend and backend development with ease.

I enjoy working closely with designers, product managers, and domain experts to shape solutions from early design through to release, balancing product needs with long-term maintainability, performance, and reliability.

Alongside hands-on development, I’ve contributed to shared engineering standards, improved testing and deployment practices, and mentored engineers and interns.

Tech: TypeScript, JavaScript, React, Angular, Python, Node.js, Ruby on Rails, HTML/CSS, SQL/NoSQL, AWS, CI/CD, Testing (Jest, RTL, Cypress).

I have completed the National Stewards Training Course for the GAA with Portobello Institute and I have also completed a Practical First Aid Course with Irish Red Cross.

## Work Experience
### Software Engineer @ Simply Business
Jan 2025 – Present | London, United Kingdom
• Designed and implemented accessible, responsive user interfaces for internal React applications used by insurance sales consultants,
• Designed and implemented RESTful Rails APIs supporting complex questionnaire workflows and renewal systems.
• Built A/B testing infrastructure integrated with Amplitude experimentation, enabling product teams to validate revenue-impacting hypotheses.

### Full Stack Engineer @ 9bit concept
Jan 2024 – Jan 2024 | Perth, Western Australia, Australia
• Developed and deployed secure software solutions to address the operational needs of GP clinics, enhancing clinical services and patient care.
• Integrated software effortlessly with healthcare
ecosystems for robust data access.
• Engaged in technical discussions to assist with system design, analysis and troubleshooting.

### Software Engineer @ IBM
Jan 2019 – Jan 2024 | Cork, Munster, Ireland
• Led development of scalable React UI libraries and design system components used across multiple product teams, improving consistency, accessibility, and development speed.
• Developed visual workflow builders for QRadar SOAR, creating drag and drop composition tools and
configuration interfaces for security automation.
• Drove modernization of legacy Backbone/Marionette codebase to React and TypeScript, significantly improving maintainability and performance.
• Collaborated cross-functionally with UX designers, product managers, and backend engineers in a
distributed team environment.
• Conducted code reviews focusing on frontend architecture, accessibility, and performance, improving code quality by 20%.
• Mentored interns and junior engineers through pairing, code reviews, and technical coaching.
• Contributed to open-source projects including the Carbon Design System, participating in community code reviews and component development.
• Served as a technical advocate for a client, providing expert support and resolving product-related issues to enhance user satisfaction.

### Shop Assistant @ Central Sports Store
Jan 2011 – Jan 2019 | Kanturk, Ireland

### Software Engineer Intern @ IBM
Jan 2018 – Jan 2018 | County Cork, Ireland


## Education
### Bachelor of Computer Science BSc Honours in Software Development
Munster Technological University


## Contact & Social
- LinkedIn: https://linkedin.com/in/cathal-kenneally

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Source: https://flows.cv/cathal
JSON Resume: https://flows.cv/cathal/resume.json
Last updated: 2026-04-05