Andrés Mauricio Hernández Serna
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Web Developer | SEO @ WYN | Helping local businesses grow organic leads & traffic
Medellín, Antioquia, Colombia
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Résumé
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Web Developer verified_user Verified experienceWYN SolutionsDec 2023 - Current (2 years 11 months)I build high-volume, SEO-optimized web pages for U.S. car dealerships, healthcare providers, and HVAC brands—helping them rank higher, load faster, and get more leads. With strong communication, deep CMS experience, and full-stack development capabilities I bring a track record of delivering accurate, compliant, co-op eligible content under tight campaign timelines. As part of the WYN Operative Network, I support our team and U.S. companies through: • Building up to 70 responsive landing pages per day, using automotive CMS systems like DealerInspire / CarsCommerce, DealerOn, Dealer.com, Dealer eProcess, WordPress, AutoGo, Dealer Alchemist. • Fixing SE- Junior Software DeveloperSeguros Bolivar SAJul 2023 - Dec 2023 (6 months)I developed front-end and back-end features for internal service tools at Colombia’s largest financial insurance services provider. As a junior developer, I worked across Angular, Spring Boot, and PL/SQL to build real-time service components and extend database functionality beyond storage logic. • Built a reusable UI card that received service orders and updated their live status through custom API integrations • Programmed dynamic business logic in PL/SQL and Spring Boot, enabling the database to process workflows instead of passively storing records • Helped accelerate delivery timelines and reduce refactor cycles by improving code quality and supporting cleaner QA handoffs
- Web DeveloperULTIM MarketingJan 2023 - Sep 2023 (9 months)I built websites and landing pages for U.S. and Colombian clients to improve SEO, drive conversions, and support digital marketing campaigns. We used WordPress (Elementor), Next.js, and Firebase to build fast, responsive websites—owning each project from development to deployment using Git and GitLab. • Built and launched 5–6 websites and 30–40 pages per month, including Unbounce landing pages optimized for direct response lead generation • Improved Google PageSpeed scores by 10% (88+) through asset optimization, cleaner page structure, and refined load logic • Acted as sole developer for a U.S.-based law firm, leading full buildout, CMS configuration, and performance tuning independently
- Web UI Developer JrGlobantAug 2022 - Jan 2023 (6 months)Built Angular and Material UI components for a student profile module deployed to staging, applying unit tests and accessibility standards. Collaborated with UX and senior devs to deliver responsive, optimized interfaces under Agile workflows. • Delivered reusable, mobile-first components using Angular, TypeScript, and Tailwind • Reduced upload size by optimizing file storage logic for performance • Earned recognition for speed, code quality, and reliability across sprints and in Jira
- Freelancer Software DeveloperFreelancerJan 2021 - Aug 2022 (1 year 8 months)1. UI Design and Implementation: Designed and implemented user interfaces for web applications. 2. Client Collaboration: Worked with clients to gather requirements and create mockups. 3. Efficient Coding: Wrote clean, efficient, and reusable code. 4. Web Optimization: Optimized web pages for maximum speed and scalability. 5. Maintenance and Troubleshooting: Maintained and fixed issues on websites, resolving any errors or problems.
Education
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- Analisis y Desarrollo de Software, Computer Software Technology/TechnicianServicio Nacional de Aprendizaje SENAJan 2023 - Jan 2025 (2 years 1 month)
- Web Development, Computer Software EngineeringEAFIT UniversityJan 2022 - Jan 2024 (2 years 1 month)
Projects (professional or personal)
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- CCHILETEL SoftwareOct 2023 - Dec 2023 (3 months)This project aimed to develop a service order management system for the company CHILETEL, focused on assigning technicians to customer-reported issues. The software allows for managing service orders based on multiple parameters, priorities, and customer types. It also enables an administrator to perform various management tasks related to technicians, clients, damage resolution times, and more. Developed using Angular with PrimeNG, Spring Boot 3.1 with Java 11, and Oracle DB, leveraging RESTful APIs and a microservices architecture with Eureka and API Gateway.
- CCoin O'BilllePractical project of an educational platform focused on personal finance. Developed using Angular, with a strong emphasis on styling and user experience through Tailwind and Material.
Awards
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- Seed for the futureHuaweiJul 2024Selected to participate in the "Seeds for the Future" program, Huawei's flagship corporate social responsibility initiative. This prestigious international program selects young talents from around the world for short-term training, global competitions, and ongoing alumni activities, all focused on digital technology. The initiative offers a platform to understand industry innovation, experience cultural exchange, and cultivate an entrepreneurial spirit. Held in Mexico City, at Tecnológico de Monterrey.