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martin_sanchez_

Martin Sanchez

@martin_sanchez_

Senior Full Stack Developer

Colombia
Inglés, Español
Parte de la información aparece en idioma inglés.
Sobre mí
I am a Full Stack Developer with 4 years of experience building scalable web applications for 150,000+ daily users. I am proficient in React/Next.js, NestJS, TypeScript, and PostgreSQL. I specialize in payment systems (Stripe), API integrations (15+ services), and enterprise security.... Lee más

Habilidades

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martin_sanchez_
Martin Sanchez
desconectado • 

Revisa mis servicios

Webflow
I will build a fast and scalable web application for your business
DeUSD 90 / proyectoMás información

Porfolio

Experiencia laboral

Freelance_Web Designer

Senior Software Engineer

Freelance Web Designer • Freelance

Dec 2024 - Jan 2026 • 1 yr 1 mo

Architected and delivered a large-scale, enterprise-grade platform handling complex business logic, payments, real-time features, and multiple third-party integrations. Built a scalable system supporting advanced e-commerce models (subscriptions, referrals, wallets) while ensuring high performance, security, and reliability at scale. Led the implementation of secure authentication, optimized database performance, and integrated 15+ external services to create a seamless and fully connected ecosystem. Focused on long-term scalability, clean architecture, and production-ready quality from day one.

AT&T

Software Engineer

AT&T • Tiempo completo

Jan 2023 - Oct 2024 • 1 yr 9 mos

Led the development and optimization of a high-traffic enterprise platform serving 150,000+ daily users. Owned projects end-to-end — from initial architecture to deployment — delivering fast, scalable solutions that improved performance, automated internal processes, and enhanced user experience. Reduced response times, improved system stability, and streamlined workflows across teams. Mentored developers, elevated code quality standards, and helped build a more efficient and scalable development environment. Focused not just on building features, but on delivering measurable business impact.