I am a Systems Engineer with extensive experience in back-end and front-end development. I specialize in Java, Spring Boot, JPA, Hibernate, and modern frameworks like Angular, delivering robust APIs and scalable solutions. I love turning complex requirements into clean, maintainable code. I’m actively expanding my knowledge in artificial intelligence and cloud-based development, and I enjoy collaborating in agile teams to drive successful product delivery.

Juan Sebastian Martinez Contreras

I am a Systems Engineer with extensive experience in back-end and front-end development. I specialize in Java, Spring Boot, JPA, Hibernate, and modern frameworks like Angular, delivering robust APIs and scalable solutions. I love turning complex requirements into clean, maintainable code. I’m actively expanding my knowledge in artificial intelligence and cloud-based development, and I enjoy collaborating in agile teams to drive successful product delivery.

Available to hire

I am a Systems Engineer with extensive experience in back-end and front-end development. I specialize in Java, Spring Boot, JPA, Hibernate, and modern frameworks like Angular, delivering robust APIs and scalable solutions.

I love turning complex requirements into clean, maintainable code. I’m actively expanding my knowledge in artificial intelligence and cloud-based development, and I enjoy collaborating in agile teams to drive successful product delivery.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Spanish; Castilian
Fluent
English
Advanced

Work Experience

Software Developer at SEGUROS BOLIVAR
October 1, 2024 - August 27, 2025
Led the creation of a new application to optimize the company's billing process by designing and developing billing flow integrated with SAP. Managed infrastructure, frontend, backend, database, and microservices from scratch. Improved performance and stability of a payment order application by identifying bugs, redesigning flow using Flowable, and updating logic. Coordinated the SAP database migration, including stakeholder communication and testing before and after migration.
Customer Success Representative at ACSENDO
October 1, 2021 - August 27, 2025
Resolved incidents from LATAM clients and executed database queries. Customized HTML forms and platform features to meet client requirements. Presented platform modules and advised clients during onboarding and support phases.
Software Developer at SEGUROS BOLIVAR
October 1, 2024 - October 1, 2024
Created a new billing optimization application; designed and implemented the billing flow and SAP integration; handled frontend, backend, infrastructure, database, and microservices from scratch. Enhanced the payment order application performance and stability by identifying bugs and redesigning the flow with Flowable. Led SAP database migration, coordinating stakeholder communication and testing before and after migration.
Customer Success Representative at ACSENDO
October 1, 2021 - October 1, 2021
Resolved incidents for LATAM clients, executing database queries. Customized HTML forms and platform features to client requirements. Presented platform modules and advised clients during onboarding and ongoing support.
Software Developer at SEGUROS BOLIVAR
October 1, 2021 - October 1, 2024
Created a new application to optimize the company’s billing process, designed and developed the flow for billing, integrated with SAP, and managed infrastructure, frontend, backend, database, and microservices from scratch.
Customer Success Representative at ACSENDO
November 1, 2019 - October 1, 2021
Resolved incidents for LATAM clients; executed database queries; customized HTML forms and platform features; presented platform modules and advised clients during onboarding and support.

Education

Bachelor’s in Systems Engineering at Corporación Universitaria Minuto de Dios, Colombia
January 7, 2013 - December 7, 2022
Artificial Intelligence Certified Expert at Mintic, Colombia
January 11, 2030 - November 5, 2025
Master of software engineering & AI at Torrens university
June 6, 2025 - November 5, 2025
Bachelor's in Systems Engineering at Corporación Universitaria Minuto de Dios, Colombia
January 11, 2030 - December 29, 2025
Artificial Intelligence Certified Expert at Mintic, Colombia
January 11, 2030 - December 29, 2025

Qualifications

Artificial Intelligence Certified Expert
January 11, 2030 - August 27, 2025
Artificial Intelligence Certified Expert
January 11, 2030 - December 29, 2025

Industry Experience

Software & Internet, Financial Services, Professional Services, Education