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Cillian O MurchuCO

Cillian O Murchu

Senior Software Developer

€280/day
Barcelona, ES
8-15 years

Average response time: 1 hour

About Cillian

  • English

    Native or bilingual

  • French

    Fluent

  • Spanish

    Conversational

Can work on-site
Barcelona (up to 50km)

Experience

  • Peach Nutrition
    Founder & CTO
    February 2025 - Today (1 year and 4 months)
    Barcelona, Spain
    • • Implemented automated workflows for product updates, delivery tracking, and email notifications, cutting manual operational tasks by ~80%.
    • • Designed and shipped a fully custom Shopify storefront using Liquid and responsive design.
    • • Established a GitHub Actions CI/CD pipeline ensuring secure, version-controlled deployments.
    • • Developed and executed video-led marketing campaigns and Facebook Ads strategies, boosting engagement and click-through rates by 25%.
  • Lighthouse
    Senior Software Engineer
    February 2023 - February 2025 (2 years)
    Barcelona, Spain
    • • Architected the client-side data layer to efficiently consume high-frequency, summarized price updates via WebSocket connections, enabling near real-time data visualization.
    • • Engineered predictive pricing tools for 70,000+ hotel customers.
    • • Lead the enterprise TypeScript migration from a legacy codebase, improving code reliability and maintainability across 50K+ lines.
  • Betsson Group
    Software Engineer
    October 2020 - Today (5 years and 8 months)
    Barcelona, Spain
    • • Engineered a multi-tenant iGaming platform serving 1.38M active users across 10+ clients, responsible for compliance with strict iGaming and GDPR regulations.
    • • Optimized the Terms & Conditions registration flow, resulting in an 8% conversion rate improvement.
    • • Led the e2e initiative and deployed a highly reliable, multi-tenant E2E testing framework (Selenium/Puppeteer/Mirage) integrated into CI/CD, drastically improving release confidence and maintaining compliance across regulated platforms.
    • • Mentored junior engineers on best practices for data visualization and Angular state management.
    • • Pioneered the integration of Puppeteer and Github actions into the CI/CD pipeline to enhance deployment confidence

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Education

  • Full Stack
    Bootcamp Ironhack
    2017
    Full Stack
  • Bachelor of Science
    Multimedia Dublin City University
    2006
    Bachelor of Science

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