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I’m a results-oriented software engineer with a passion for building full-stack SaaS solutions and cloud-driven platforms. I design, develop, and deploy scalable products from concept to production, with a focus on data-driven insights and user-centered experiences. As founder and project lead of LinkUp, I’ve led cross-functional teams, delivered multilingual features across European markets, and implemented secure payment flows with Stripe. I thrive in fast-paced environments, value continuous learning, and enjoy turning complex problems into practical, automated solutions.…I’m a results-oriented software engineer with a passion for building full-stack SaaS solutions and cloud-driven platforms. I design, develop, and deploy scalable products from concept to production, with a focus on data-driven insights and user-centered experiences. As founder and project lead of LinkUp, I’ve led cross-functional teams, delivered multilingual features across European markets, and implemented secure payment flows with Stripe. I thrive in fast-paced environments, value continuous learning, and enjoy turning complex problems into practical, automated solutions.

Guillermo García Acosta

Web Developer, Full Stack Developer, Programmer, +5

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I’m a results-oriented software engineer with a passion for building full-stack SaaS solutions and cloud-driven platforms. I design, develop, and deploy scalable products from concept to production, with a focus on data-driven insights and user-centered experiences. As founder and project lead of LinkUp, I’ve led cross-functional teams, delivered multilingual features across European markets, and implemented secure payment flows with Stripe. I thrive in fast-paced environments, value continuous learning, and enjoy turning complex problems into practical, automated solutions.…I’m a results-oriented software engineer with a passion for building full-stack SaaS solutions and cloud-driven platforms. I design, develop, and deploy scalable products from concept to production, with a focus on data-driven insights and user-centered experiences. As founder and project lead of LinkUp, I’ve led cross-functional teams, delivered multilingual features across European markets, and implemented secure payment flows with Stripe. I thrive in fast-paced environments, value continuous learning, and enjoy turning complex problems into practical, automated solutions.

Available to hire

I’m a results-oriented software engineer with a passion for building full-stack SaaS solutions and cloud-driven platforms. I design, develop, and deploy scalable products from concept to production, with a focus on data-driven insights and user-centered experiences.

As founder and project lead of LinkUp, I’ve led cross-functional teams, delivered multilingual features across European markets, and implemented secure payment flows with Stripe. I thrive in fast-paced environments, value continuous learning, and enjoy turning complex problems into practical, automated solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Fluent

German

Advanced

Work Experience

Freelance Web Developer

January 1, 2022 - Present

Built and maintained WordPress websites including multisite and multilingual setups using WPML. Developed custom modules and plugins for user management, volunteer tracking, and eCommerce. Integrated WooCommerce with payment gateways, CRM systems, SMS APIs, and osTicket-based helpdesk. Ensured high standards for web accessibility, security, and responsive design.

Software Developer at Top Energy

January 1, 2022 - Present

Developed web tools and internal platforms using Java, React, and TypeScript. Designed microservice architectures and RESTful APIs for internal energy monitoring solutions. Participated in Agile teams with a strong focus on code quality and DevOps practices.

Founder & Project Lead at LinkUp

January 1, 2025 - Present

Independent full-stack project (concept, architecture, and implementation). Designed and developed LinkUp, a SaaS marketplace connecting local service providers with clients across Europe. Led all phases: concept design, architecture, UX/UI, implementation, testing, and deployment. Built using Next.js, React Native, Prisma, Supabase, and Stripe for secure payments and subscription management. Created multilingual functionality (English, German, Spanish) and integrated automated invoicing and messaging. Developed internal data dashboards for provider performance and customer analytics. Managed full product lifecycle, legal setup (Estonian OÜ), and business strategy. Delivered a near-production-ready platform within three months, demonstrating strong ownership, leadership, and adaptability.

Software Developer & Digitalization Consultant at Top Energy

January 1, 2022 - Present

Led the design and implementation of a company-wide dashboard integrating HR, logistics, and project analytics. Developed AI-driven analytics features enabling data-based decision-making across departments. Advised management on digital transformation, scalability, and process automation. Built and maintained production web applications using React, Firebase, and modern CI/CD pipelines. Collaborated within cross-functional teams applying Agile and DevOps principles.

IT Consultant at Softek / Palo Alto Networks Projects

January 1, 2022 - December 31, 2024

Supported enterprise clients integrating Palo Alto Networks cybersecurity solutions into their systems. Provided technical consultancy on network security, automation, and cloud adoption. Participated in architecture design, integration, and system testing phases. Delivered training sessions on cybersecurity and data protection best practices.

Freelance Software Engineer at Independent / SMEs (Mexico & Germany)

January 1, 2022 - December 31, 2024

Delivered custom web and data solutions for SMEs using React, Next.js, Node.js, and MongoDB. Built interactive data visualization dashboards to optimize operational efficiency. Managed complete project lifecycles, from client requirements to deployment and post-launch support. Guided clients in adopting DevOps and CI/CD workflows for automation and scalability.

Full Stack Developer Intern at Intelligence 18

January 1, 2024 - Present

Developed mobile applications using React Native integrated with AI and image recognition. Optimized backend API performance and scalability. Collaborated in an international agile environment delivering production-ready software.