Óscar Iván Márquez Salazar
Systems Engineer
Bogotá
Work Preference
Summary
I am a Systems Engineer with 9 years of experience in the software lifecycle, working with C#, .NET, Java, and BPM process flows using Bizagi. I have developed web, mobile, and desktop applications, handling both front-end and back-end, with business logic as my main strength.
Thanks to my specialization in Enterprise Architecture, I understand businesses from both a functional and non-functional perspective, which allows me to propose comprehensive solutions aligned with organizational goals. I have experience in SOAP and REST service integration, SQL database management, and web technologies such as JavaScript, HTML, and CSS.
I excel in software analysis and design, incident resolution and deep problem analysis, team leadership, and effort/resource estimation. I work under the SCRUM methodology, ensuring high-quality and results-oriented deliveries.
Overview
9
9
years of professional experience
7
7
Certifications
2
2
Languages
Work History
Expert Engineer II
GFT Technologies
08.2021 - Current
- Effort estimation, resolution of production incidents, requirement implementation, SQL queries.
- Successful Business Line Migration due to Technological Obsolescence
- Guided junior consultants, proposed technical solutions, team leader (development/technical).
- Projects focused on BPM with Bizagi, C#/.Net, and SQL Server.
Mid-level Developer
Stefanini
04.2021 - 08.2021
- Effort estimation and impact analysis on applications.
- Proposed workflow improvements aligned with client requirements.
- Implemented/modified BPM solutions with Bizagi.
Bizagi Consultant
Bizagi
06.2019 - 04.2021
- Certified Bizagi Professional and Developer.
- Worked on estimation, implementation, and deployment of BPM projects in Bizagi.
Semi-Senior Developer
Novatec Solutions
11.2018 - 06.2019
- Java development under Agile SCRUM methodology.
- Version control with Git, responsible for developments for BBVA’s web and mobile channels.
Junior Developer – Claro Factories
Tatic Soluciones en Informática
04.2018 - 11.2018
- FullStack role: C#, HTML, CSS, JS, JQuery, Ajax, PL/SQL, .NET Framework, Oracle SQL Developer, SoapUI.
- Developed web apps and integrated web services for Claro.
Application Development Engineer Trainee
Unisys de Colombia
11.2017 - 04.2018
- Java, JavaScript, HTML, CSS development; XML/JSON data transfer.
- Basic Objective-C and Android development.
- IVR systems, Pentaho ETLs, application-level support for Latin America.
Technical Student
Unisys de Colombia
08.2016 - 10.2017
- Java development, SQL queries, Doc1 (Pitney).
- Developed mobile applications for MiClaro.
Education
Enterprise Software Architect - Computer And Information Systems
Pontificia Universidad Javeriana
Bogotá, Colombia03-2023
Systems Engineering - Computer And Information Systems
Universidad Autónoma De Colombia
Bogotá, Colombia07.2019
Systems Technician - Computer And Information Systems
SENA
Bogotá, Colombia06.2016
Skills
Problem-solving & Incident Resolution: Strong ability to identify issues quickly, perform deep root-cause analysis, and implement effective solutions that ensure system stability and business continuity
Solution Analysis & Design: Skilled at analyzing and designing software solutions based on both functional and non-functional requirements, ensuring alignment with business objectives
Back-end Development & Business Logic: Solid expertise in back-end programming, with emphasis on business logic implementation, database management, and information handling
Methodologies: Experienced with both traditional (waterfall) and agile (SCRUM) methodologies, adapting to different project environments and delivery needs
Leadership & Mentorship: Proven ability to lead development teams, guide junior engineers, and foster a collaborative, goal-oriented environment
Goal-oriented Work: Strong focus on delivering results based on defined objectives, ensuring efficiency and value in every project
Certification
Architecting Solutions on AWS – Coursera — Jul 2024 – Aug 2024
Accomplishments
- Improved system response time by 30% through optimized SQL queries.
- Led BPM automation projects reducing manual processing by 40%.
- Successfully integrated SOAP/REST services across enterprise platforms.
- Mentored junior developers and improved team delivery efficiency.
Professional Strengths
- Problem-solving and critical thinking
- Incident resolution and deep problem analysis
- Teamwork and leadership
- Functional and non-functional requirements analysis
- Goal-oriented and self-driven
Additional Information
Available for hybrid/remote work. Open to relocation to the United States. Authorized to work on international projects.
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Languages
Spanish
Bilingual or Proficient (C2)
English
Upper intermediate (B2)
Software
I have strong skills in business logic development, with the ability to design and implement robust solutions that align with functional and non-functional requirements I adapt quickly to new technologies and can work effectively on both front-end and back-end development My technical expertise includes programming languages and tools such as Java, C#, Bizagi, JavaScript, and SQL, as well as both structured programming and object-oriented programming (OOP) This versatility allows me to deliver full-stack solutions and contribute across the entire software development lifecycle
Timeline
Expert Engineer II
GFT Technologies
08.2021 - Current
Mid-level Developer
Stefanini
04.2021 - 08.2021
Bizagi Consultant
Bizagi
06.2019 - 04.2021
Semi-Senior Developer
Novatec Solutions
11.2018 - 06.2019
Junior Developer – Claro Factories
Tatic Soluciones en Informática
04.2018 - 11.2018
Application Development Engineer Trainee
Unisys de Colombia
11.2017 - 04.2018
Technical Student
Unisys de Colombia
08.2016 - 10.2017
Enterprise Software Architect - Computer And Information Systems
Pontificia Universidad Javeriana
Systems Engineering - Computer And Information Systems
Universidad Autónoma De Colombia
Systems Technician - Computer And Information Systems
SENA