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Hi, I'm Isaí Gustavo Céspedes Sánchez Valencia, a full-stack software developer based in Valencia, Spain, with 3+ years of experience delivering robust, scalable frontend and backend solutions. I enjoy turning complex requirements into clean, maintainable code and collaborating with cross-functional teams across remote international contexts. I have a proven track record of improving developer experience, code quality, and team collaboration across global stakeholders. I'm a proactive problem-solver with a bias for action and ownership, always committed to delivering high-quality results on tight timelines.…Hi, I'm Isaí Gustavo Céspedes Sánchez Valencia, a full-stack software developer based in Valencia, Spain, with 3+ years of experience delivering robust, scalable frontend and backend solutions. I enjoy turning complex requirements into clean, maintainable code and collaborating with cross-functional teams across remote international contexts. I have a proven track record of improving developer experience, code quality, and team collaboration across global stakeholders. I'm a proactive problem-solver with a bias for action and ownership, always committed to delivering high-quality results on tight timelines.

Isaí Gustavo Céspedes Sánchez Valencia

Full Stack Developer, Web Developer, Front-End Developer, +2

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Hi, I'm Isaí Gustavo Céspedes Sánchez Valencia, a full-stack software developer based in Valencia, Spain, with 3+ years of experience delivering robust, scalable frontend and backend solutions. I enjoy turning complex requirements into clean, maintainable code and collaborating with cross-functional teams across remote international contexts. I have a proven track record of improving developer experience, code quality, and team collaboration across global stakeholders. I'm a proactive problem-solver with a bias for action and ownership, always committed to delivering high-quality results on tight timelines.…Hi, I'm Isaí Gustavo Céspedes Sánchez Valencia, a full-stack software developer based in Valencia, Spain, with 3+ years of experience delivering robust, scalable frontend and backend solutions. I enjoy turning complex requirements into clean, maintainable code and collaborating with cross-functional teams across remote international contexts. I have a proven track record of improving developer experience, code quality, and team collaboration across global stakeholders. I'm a proactive problem-solver with a bias for action and ownership, always committed to delivering high-quality results on tight timelines.

Available to hire

Hi, I’m Isaí Gustavo Céspedes Sánchez Valencia, a full-stack software developer based in Valencia, Spain, with 3+ years of experience delivering robust, scalable frontend and backend solutions. I enjoy turning complex requirements into clean, maintainable code and collaborating with cross-functional teams across remote international contexts.

I have a proven track record of improving developer experience, code quality, and team collaboration across global stakeholders. I’m a proactive problem-solver with a bias for action and ownership, always committed to delivering high-quality results on tight timelines.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Spanish; Castilian

Fluent

English

Fluent

Work Experience

FullStack Software Developer at Twilio (Client projects)

January 1, 2024 - Present

Led frontend migration from legacy CMS to a modern web platform, improving site performance and user experience. Built automation tools that streamline the migration process, reducing manual errors and saving development time. Introduced scalable standards and code practices, increasing team velocity and reducing bugs through improved DX. Collaborated across global teams (Spain, Ecuador, UK, US).

Full Stack Developer at Pylon Data

October 1, 2022 - February 1, 2023

Delivered features in a solar energy management platform used by electricity providers. Helped launch custom solutions for clients and improved reporting workflows for solar panel estimation. Gained hands-on experience working under tight timelines in a high-demand environment.

Technical Support Engineer at Microverse

January 1, 2022 - October 1, 2023

Mentored 200+ students through code reviews, debugging, and best practices. Helped junior developers improve project quality and confidence. Two mentees are now working full-time in development roles.

Full Stack Software Developer

January 1, 2024 - Present

Led frontend migration from a legacy CMS to a modern web platform, improving site performance and user experience. Built automation tools to streamline the migration process, reducing manual errors and saving development time. Introduced scalable standards and coding practices, increasing team velocity and reducing bugs. Collaborated with global teams (Spain, Ecuador, UK, US) to align delivery with stakeholder expectations; delivered features for clients including Twilio and other international clients.

Full Stack Software Developer

October 1, 2022 - February 28, 2023