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Josué BoixJB

Josué Boix

Backend Engineer

€556/day
Alicante, ES
8-15 years

Average response time: 1 hour

About Josué

I work on building resilient, highly scalable backend systems.

I spent the first chapter of my career working in software quality assurance and test automation. When I transitioned fully into backend development, I brought that quality mindset with me. Because of that, I work on designing systems that are inherently testable, observable, and built to handle edge cases gracefully.

My focus is on distributed systems and microservices architecture. I work on solving complex data consistency issues across distributed networks, and I enjoy tackling architectural challenges alongside a collaborative team.
  • English

    Fluent

  • Spanish

    Native or bilingual

  • Catalan

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Welltech
    Backend Engineer
    July 2025 - Today (11 months)
    Build a modern, internal payments platform from the ground up to streamline payment operations across the business Design, deploy, and maintain high-performance microservices using Spring Boot, taking end-to end ownership from implementation to support Manage cloud-native deployments and configurations across Kubernetes clusters to ensure smooth rollouts with minimal downtime Ensure system reliability by taking responsibility for performance, scalability, security, and data consistency Promote engineering best practices across the team, including clean code, test automation, and continuous integration Work directly with Frontend, Infrastructure, QA, and Product teams to build and ship reliable platform updates
    Java Spring boot PostgreSQL Amazon Web Services Docker
  • FREENOW
    Backend Software Engineer
    July 2022 - July 2025 (3 years)
    Developed and maintained scalable backend microservices and RESTful APIs Optimised system performance by diagnosing issues and tuning resource usage Conducted testing across the whole software lifecycle: unit, integration, system, and end-to-end Collaborated with cross-functional teams to plan and implement new features Monitored service health using observability tools to ensure reliability Fostered knowledge sharing among backend developers
    Java Kotlin Spring boot Apache Kafka PostgreSQL
  • FREENOW
    Software Development Engineer in Test
    May 2019 - July 2022 (3 years and 2 months)
    Barcelona, Spain
    Built and maintained test automation frameworks for backend services and web interfaces Designed integration, contract, and end-to-end tests to support continuous delivery Defined quality practices and coordinated testing activities across teams Mentored engineers on agile testing methods and process improvements
    Java Kotlin Spring boot Apache Kafka PostgreSQL

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Education

  • MSc in Computer Engineering
    Universitat d'Alacant
    2009
  • MSc in Computer Engineering
    NTNU
    2008

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