William Lemus Bula

Front-End Developer with a background spanning 5+ years of professional experience in technology, data analysis, and web development. Brings hands-on development experience in React.js, JavaScript, TypeScript, HTML5, and CSS3, complemented by strong analytical and technical problem-solving skills built across data-driven roles. Known for a strong eagerness to learn and quickly adopt new technologies, continuously expanding expertise to deliver modern, high-quality solutions.

Graduate of Lambton College's Full Stack Software Development program. Passionate about crafting accessible, user-centered interfaces while collaborating effectively within Agile development teams.

Front-End Developer – Work Integrated Learning Project - Lambton College - Sarnia, ON

(2026-01 - 2026-04)

• Led a team of 4 developers, delegating tasks based on individual strengths and ensuring all weekly milestones were delivered on schedule and aligned with project requirements.
• Developed a real-time peer-to-peer web application with a front-end focus, building the UI and client-side logic using HTML, CSS, and JavaScript, and integrating Web Crypto API, AES encryption, and Socket.IO to enable secure end-to-end communication.
• Presented weekly project updates to stakeholders, effectively communicating technical progress, project risks, and deliverables to both technical and non-technical audiences.
• Designed and implemented the front-end interface for a custom multi-factor authentication (MFA) solution using CSHTML and CSS, delivering a secure and user-friendly authentication experience.

Platform Support - Nuvia Smiles Colombia S.A.S

(2023-02 - 2024-08)

• Managed platform administration activities, processing 50+ user account requests monthly and reducing access-related issues by 40%.
• Resolved 40+ support tickets daily through troubleshooting and root-cause analysis, achieving a 90% first-response resolution rate within five minutes.
• Tested and validated new platform modules before production deployment, identifying and resolving 85% of defects prior to release.
• Collaborated with technical teams to investigate and resolve complex platform issues, reducing backlog cases through proactive follow-up and issue tracking.
• Generated more than 60 monthly operational reports in English and Spanish, reducing reporting turnaround time by 20%.

Technical Center Analyst - Consorcio redes de la costa CREC

(2021-11 - 2023-02)

• Processed and submitted 50+ operational templates using Microsoft Excel, ensuring real-time updates to the Air-e BDI platform across the Atlántico and Magdalena region.
• Collaborated with cross-functional teams to ensure the accurate and timely delivery of operational information.
• Maintained data integrity through detailed verification, auditing, and quality-control procedures.
• Supported reporting and information-management activities for utility operations across multiple regional departments.

Cartographic Updater - Ingeniería y Soluciones Especializadas ISES S.A.S

(2019-05 - 2021-11)

• Executed and optimized 100+ SQL queries using Toad for data retrieval, validation, and operational reporting.
• Designed and developed 10+ PL/SQL scripts that automated data-processing workflows, reducing manual effort by 40%.
• Updated and validated utility network records across multiple regions while maintaining high standards of data accuracy and consistency.
• Created monthly Excel-based reports and data visualizations to support operational planning and management decision-making.

Web Developer - Grupo Empresarial PROACTIVAR S.A.S

(2017-10 - 2018-04)

• Developed a responsive contact form using HTML, CSS, JavaScript, and Bootstrap, increasing user engagement and customer inquiries by 20%.
• Designed and developed both front-end and back-end components of the company's website administration system using PHP and SQL, implementing client-side validation and dynamic functionality to improve user experience.
• Optimized front-end code, web assets, and SEO implementation, improving page load performance, enhancing accessibility, and increasing organic website traffic by 30%.

Postgraduate Certificate - Full Stack Software Development - Lambton College (2026-06)

Bachelor of Science - Systems Engineering - Universidad Autónoma del Caribe (2018-12)