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Francisco Iglesias

Tech Lead & Senior Frontend Engineer

Summary

Tech Lead and Senior Frontend Engineer with 8+ years of experience building scalable web applications and leading high-performing engineering teams. Currently driving frontend architecture and engineering excellence at Tree-Nation, a global reforestation platform. Proven track record of owning the full frontend lifecycle — from technical design and code review to mentoring engineers and aligning with product and business stakeholders.

Skills

FrontendReact, Angular, Vue, Next.js, TypeScript, JavaScript, React Native, HTML, CSS
BackendNode.js, NestJS, Express, Python
ToolsAWS, Heroku, Git, Scrum, Agile
LanguagesSpanish (Native), English (Bilingual), French (Limited Working)

Experience

  • Technical Lead · Tree-Nation
    Barcelona, SpainJun 2025Present

    Leading engineering teams to build scalable, high-quality web applications. Bridging technical strategy with hands-on development to drive product innovation and team growth.

  • Senior Frontend Engineer · Tree-Nation
    Barcelona, SpainJun 2024Jun 2025

    Built and maintained high-performance frontend features for Tree-Nation's platform, helping users and companies track their global reforestation impact through intuitive, modern interfaces.

  • Podcast Co-Host · Frontend Army
    Barcelona, SpainJun 2022Present

    Co-hosting a Spanish-language podcast dedicated to frontend development, sharing practical insights, trends, and interviews with developers to inspire and grow the tech community.

  • Sr. Frontend Engineer · Deel
    Barcelona, SpainJun 2023Aug 2024

    Developed scalable frontend solutions at one of the world's leading global payroll and HR platforms. Delivered key product features in a fast-paced, fully distributed international team.

  • Sr. Front-End Engineer · Ankorstore
    FranceJul 2022Jun 2023

    Drove frontend development for the Growth tribe at Ankorstore, a B2B wholesale marketplace empowering independent brands and retailers across Europe. Focused on conversion optimization and scalable UI solutions.

  • Sr. Front-End Engineer · True North
    Buenos Aires, ArgentinaDec 2020Jun 2022

    Crafted full-stack web applications for diverse client projects using Next.js, React, Python, Nest, and Express — delivering clean, performant code across modern tech stacks.

  • Solutions Designer · Wolox (part of Accenture)
    ArgentinaFeb 2020Aug 2020

    Served as a technical member of the sales team at Accenture, uncovering client needs, proposing tailored solutions, and optimizing estimation processes to drive stakeholder satisfaction.

  • Engineering Manager · Wolox (part of Accenture)
    ArgentinaAug 2019Aug 2020

    Led frontend engineering teams at Accenture, setting technical standards, mentoring senior developers, and ensuring quality delivery of frontend projects while contributing as a technical advisor in sales.

  • Front End Technical Leader · Wolox (part of Accenture)
    ArgentinaJun 2018Aug 2019

    Led cross-functional development teams of up to 9 at Accenture, managing project plans, Scrum ceremonies, and client communications to deliver high-quality software on time. Grew into a frontend technical leadership role — spearheading tech talks, mentoring developers, coordinating projects, and guiding the career growth of the frontend team.

  • Software Developer · Wolox (part of Accenture)
    ArgentinaJun 2017Oct 2018

    Started as a Front-End developer building solutions across education, e-commerce, and banking industries, using JS, CSS, HTML, React, React Native, Angular & Vue, hosted on Heroku and AWS. Grew into a lead role taking technical ownership across multiple projects.

Education

Engineering · Systems Engineering
20142019

Universidad Tecnológica Nacional

Certifications

  • Scrum Foundation Professional Certificate
  • First Certificate in English (FCE)