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Celestino Ruas

Available to hire

Hi, I’m Celestino Ruas, a Senior Backend and Full-Stack Developer based in Cascais, Portugal.

About

Hi, I’m Celestino Ruas, a Senior Backend and Full-Stack Developer based in Cascais, Portugal. I design and scale cloud-native microservices and web applications with a strong focus on performance, reliability, and cost efficiency. Over the past 12+ years I’ve delivered solutions for finance, gaming, and media industries, leveraging PHP, Node.js, TypeScript, and cloud platforms like AWS and Azure.

I enjoy turning complex technical challenges into robust, scalable systems and collaborating with global teams to ship high-quality software that meets business goals.

  • 18 years' experience
  • Joined September 2025

Languages

  • PortugueseFluent
  • Spanish; CastilianFluent
  • EnglishFluent

Industry experience

  • Financial Services
  • Gaming
  • Media & Entertainment
  • Software & Internet
  • Professional Services

More experts in Lisboa, Portugal

Work experience· 11 roles

Backend Developer · Asset Management Firm (Paris, France)Feb 2025 – Sep 2025 · 8 mos

Architected Symfony APIs integrated with Azure and DocuSign to digitize contracts for France's #1 real estate investment platform (€1B+ annual funding). Achieved 88% digital funding adoption, eliminating paper bottlenecks and ensuring EU audit compliance, streamlining operations for 1B+ investors.

Backend Developer · CORUM Investments (Paris, France)Feb 2025 – Sep 2025 · 8 mos

Built and scaled a digital contract system, reducing paper usage by 98% and enabling EU-compliant, real-time portfolio tracking.

FullStack Developer · BuukMeGroep (The Hague, Netherlands)Feb 2025 – Present · 1 yr 10 mos

Built a digital menu platform to modernize restaurant operations and improve efficiency.

FullStack Developer · DPG Media (Europe’s Largest Digital Publisher)Dec 2022 – Sep 2025 · 2 yrs 10 mos
Full-Stack Developer · Europe's Largest Digital Publisher (Netherlands)Dec 2022 – Sep 2025 · 2 yrs 10 mos
Full-Stack Developer · UK Betting PlatformSep 2018 – Sep 2025 · 7 yrs 1 mo
Full-Stack Developer · Leading European Online Betting Platform - 10M+ UsersMar 2017 – Sep 2025 · 8 yrs 7 mos
FullStack Developer · Unibet (Leading Online Betting Platform – 10M+ Users)Mar 2017 – Sep 2025 · 8 yrs 7 mos

Education

· Estácio de Sá University, Brazil2030 – 2025

Certifications and awards· 5

Laravel Certification (Coursera)2030 – 2025
Modern Web Development Bootcamp (Rocketseat: Next.js, Node.js)2030 – 2025
Network Administrator & Web Development2030 – 2025
Laravel Certification2030 – 2025

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