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Francisco José Melgar MolinaFJ

Francisco José Melgar Molina

Tech Lead Backend | APIs & Integrations

€400/day
Sevilla, ES
8-15 years

Average response time: 1 hour

About Francisco José

Backend Tech Lead especializado en arquitectura, APIs e integraciones de alto tráfico. Ayudo a empresas a escalar sus plataformas, conectar sistemas complejos y mejorar rendimiento y fiabilidad. Experiencia liderando equipos, diseñando soluciones robustas y optimizando procesos en entornos de producción.
  • Spanish

    Native or bilingual

  • English

    Conversational

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

Experience

  • CoverManager
    Tech Lead & Senior Backend Engineer (Integrations & APIs)
    September 2022 - Today (3 years and 10 months)
    Sevilla, Spain
    Tech Lead and Senior Backend Engineer leading the Integrations & Channel Manager platform in a high-traffic production environment.

    I own the design, development and reliability of critical integrations with POS systems and third-party platforms, ensuring scalability and stability under real business load.

    I also contribute hands-on as a senior developer, working on backend architecture, API design, and legacy refactoring.

    Key responsibilities:
    • Design and maintain high-performance APIs and integrations
    • Resolve critical production incidents (Tier-3 escalation)
    • Improve system reliability, observability and performance
    • Lead technical decisions and architecture evolution
    • Collaborate cross-team with product and business stakeholders

    Strong focus on backend systems, integrations and real-world problem solving in production environments.
  • Ciclogreen
    CTO & Co-Founder
    May 2016 - December 2020 (4 years and 7 months)
    Sevilla, Spain
    CTO and Co-Founder of a mobility and sustainability platform, leading all technical decisions and product development.

    Built the platform from scratch, including backend services, APIs and GIS-based systems for mobility data visualization.

    Key achievements:
    • Designed and developed scalable backend systems and APIs
    • Led architecture decisions and technology strategy
    • Built GIS solutions using Mapbox and open data
    • Managed infrastructure (AWS, servers, security, deployments)
    • Led and mentored a development team

    Strong experience in building products from zero to production.
  • Sulime Diseño de Soluciones
    Senior Full Stack Developer
    SOFTWARE PUBLISHING
    December 2020 - September 2022 (1 year and 9 months)
    Sevilla, Spain
    Senior Full Stack Developer working on multiple projects in healthcare and e-commerce environments.

    Focused on backend development, API integrations and scalable systems.

    Key responsibilities:
    • Development of REST APIs and backend systems
    • Integration with e-commerce platforms (Shopify, Magento, Prestashop, WooCommerce)
    • Frontend development with modern frameworks
    • Mentoring junior developers and improving code quality practices

    Experience working across different technologies and projects in production environments.

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Skill set

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