Guillermo Hernández
Montreal,QC
Summary
IT professional with over 11 years of experience in enterprise web application development. Demonstrated success in leading projects and mentoring teams to deliver scalable, user-centric solutions. Expertise in Oracle APEX and database technologies, complemented by a solid foundation in software engineering principles. Eager to adopt and master new tools and frameworks. Committed to leveraging adaptability and experience in new technology stacks or domains.
Overview
12
12
years of professional experience
1
1
Certification
Work History
Senior Oracle APEX Programmer Analyst
Insum, a Talan company
02.2021 - Current
- Designed and maintained data-driven web applications using Oracle APEX.
- Led technical activities and provided mentorship across projects.
- Collaborated with cross-functional teams to align solutions with business needs.
- Provided ongoing support for users experiencing issues or requiring assistance with application functionality.
- Prepared technical documentation to ensure understanding and sustainability of the system.
Oracle APEX Programmer Analyst
Insum, a Talan company
08.2017 - 01.2021
- Designed and maintained data-driven web applications using Oracle APEX.
- Technical support involving the handling of issues reported by users and the correction of bugs.
- Implemented improvements in application performance and maintainability.
- Ongoing application maintenance, including code updates to ensure optimal performance and meet new requirements.
Systems Specialist – Integration Services
Corporación Digitel
04.2016 - 04.2017
- Developed enterprise-grade SOAP web services using Java and Spring for integration, while implementing core business logic in PL/SQL through Oracle stored procedures, functions and triggers.
- Worked with contractors to review technical designs, ensure alignment with requirements, request necessary changes, and approve final deliverables.
- Coordinated development efforts with Middleware, Billing, and Network teams.
- Delivered end-user training sessions to ensure proper utilization of systems.
Junior Systems Specialist – Integration & Support
Corporación Digitel
09.2013 - 04.2016
- Provided L2 support for customer-facing platforms.
- Developed business logic in PL/SQL through Oracle stored procedures, functions and triggers.
- Automated routine operations using UNIX scripting and Control-M jobs.
- Performed assigned tasks by following established procedures and provided instructions.
Education
Telecommunications Engineer - Engineering
Universidad Católica Andrés Bello
Caracas, Venezuela2013
Skills
- Oracle APEX
- SQL-PL/SQL
- JavaScript/HTML/CSS
- Software Design & Architecture
- Agile Methodologies
- Leadership & Team Collaboration
- Quick Learning & Adaptability
- End-User Focus & Business Alignment
Languages
Spanish
Native or Bilingual
English
Native or Bilingual
French
Full Professional
Certification
Oracle APEX 18: Developer Certified Professional – Oracle
Timeline
Senior Oracle APEX Programmer Analyst
Insum, a Talan company
02.2021 - Current
Oracle APEX Programmer Analyst
Insum, a Talan company
08.2017 - 01.2021
Systems Specialist – Integration Services
Corporación Digitel
04.2016 - 04.2017
Junior Systems Specialist – Integration & Support
Corporación Digitel
09.2013 - 04.2016
Telecommunications Engineer - Engineering
Universidad Católica Andrés Bello
Similar Profiles
Mikhail GainesMikhail Gaines
Maintenance Technician at Talan ProductsMaintenance Technician at Talan Products
Chandni CurumChandni Curum
Consultante technique SAP at TalanConsultante technique SAP at Talan
Vanessa OheneVanessa Ohene
Production Assistant at Talan ProductsProduction Assistant at Talan Products