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I am a proactive software engineer specializing in backend development and microservices, with a strong track record delivering Java/Spring Boot-based systems and full-stack solutions. I thrive in collaborative teams building scalable, reliable APIs (REST/GraphQL) and distributed systems in AWS environments. I am motivated, detail-oriented, and committed to continuous learning, staying current with modern technologies and industry trends. I am seeking Backend Software Engineer, Java Developer, or similar roles where I can contribute to building scalable, reliable, and maintainable microservices-based systems.…I am a proactive software engineer specializing in backend development and microservices, with a strong track record delivering Java/Spring Boot-based systems and full-stack solutions. I thrive in collaborative teams building scalable, reliable APIs (REST/GraphQL) and distributed systems in AWS environments. I am motivated, detail-oriented, and committed to continuous learning, staying current with modern technologies and industry trends. I am seeking Backend Software Engineer, Java Developer, or similar roles where I can contribute to building scalable, reliable, and maintainable microservices-based systems.

Braian Gabriel Marquez Chesko

Back-End Developer, Web Developer, App Developer, +2

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I am a proactive software engineer specializing in backend development and microservices, with a strong track record delivering Java/Spring Boot-based systems and full-stack solutions. I thrive in collaborative teams building scalable, reliable APIs (REST/GraphQL) and distributed systems in AWS environments. I am motivated, detail-oriented, and committed to continuous learning, staying current with modern technologies and industry trends. I am seeking Backend Software Engineer, Java Developer, or similar roles where I can contribute to building scalable, reliable, and maintainable microservices-based systems.…I am a proactive software engineer specializing in backend development and microservices, with a strong track record delivering Java/Spring Boot-based systems and full-stack solutions. I thrive in collaborative teams building scalable, reliable APIs (REST/GraphQL) and distributed systems in AWS environments. I am motivated, detail-oriented, and committed to continuous learning, staying current with modern technologies and industry trends. I am seeking Backend Software Engineer, Java Developer, or similar roles where I can contribute to building scalable, reliable, and maintainable microservices-based systems.

Available to hire

I am a proactive software engineer specializing in backend development and microservices, with a strong track record delivering Java/Spring Boot-based systems and full-stack solutions. I thrive in collaborative teams building scalable, reliable APIs (REST/GraphQL) and distributed systems in AWS environments.

I am motivated, detail-oriented, and committed to continuous learning, staying current with modern technologies and industry trends. I am seeking Backend Software Engineer, Java Developer, or similar roles where I can contribute to building scalable, reliable, and maintainable microservices-based systems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

Work Experience

Senior Solutions Developer at EFFISION AUSTRALIA

January 1, 2024 - March 31, 2025

Led backend development for Mastercard projects, building and maintaining high-impact web applications handling credit/debit transactions. Designed RESTful APIs to support reconciliation workflows and manual reinjection of failed transactions, migrated Scheme Token validation logic to a modern Spring Boot service, and engineered backend services with Java/Spring Boot enabling synchronous and asynchronous communication across distributed systems to improve scalability and reliability.

Python Developer at Get 2 Know LTD (Volunteer)

October 1, 2023 - December 31, 2023

Developed and maintained full-stack ERP/Odoo-based web applications; created a real estate module in ERP Odoo using Python and HTML. Worked in Agile sprints to deliver maintainable software and improve efficiency.

Senior Software Engineer at Kavak.com

October 1, 2021 - November 30, 2022

Built scalable backend services using TypeScript and Node.js, with Angular frontend for vehicle financing IT. Improved financing application flow and expanded credit options using AWS Lambda to create scalable backend services.

FBM Inbound - Fulfillment Shipping at Mercado Libre SRL

November 1, 2020 - September 30, 2021

Designed and developed applications to apply penalties to sellers who failed to meet shipping agreements with logistics centers, deployed on AWS EC2. Implemented services using Java and Spring Boot to support synchronous and asynchronous communication between distributed systems.

Seller Fraud Prevention - Fraud Marketplace IT at Mercado Libre SRL

July 1, 2020 - November 30, 2020

Designed and developed a tool to centralize manual fraud case submissions, improving investigation efficiency and traceability. Leveraged Java and Spring Boot technologies to implement the application, enabling seamless integration and optimal performance using asynchronous communication through BigQueue.

Classifieds Fraud Prevention - Fraud Marketplace at Mercado Libre SRL

January 1, 2020 - July 31, 2020

Led the migration and establishment of rules for classified products, specifically vehicles and real estate. Integrated with Mantika's neural network models to enhance fraud detection capabilities.

Fraud Marketplace IT at Mercado Libre SRL

July 1, 2019 - January 31, 2020

Analysed, designed and developed with Java and Spring Boot a centralised rules engine to facilitate the application of penalties to users, hosted on AWS EC2. Built feature to exclude specific users from penalties based on reputation or privileges, and conducted rigorous testing to ensure reliability.

Software Engineer Analyst at Mercado Libre SRL

September 1, 2017 - July 31, 2019

Led the migration of a legacy application that enforced restrictions to disable seller accounts involved in fraudulent activities; performed analysis, segmentation and typifications to classify fraudulent behavior and implemented identity validation processes.

Python Developer at Get 2 Know LTD

October 1, 2023 - December 31, 2023

Developed and maintained full-stack ERP Odoo 16 applications; designed real estate module in Odoo using Python and HTML; participated in Agile development methodologies.

Senior Software Engineer at MERCADO LIBRE SRL

November 1, 2020 - September 1, 2021

FBM Inbound - Fulfillment Shipping: designed and developed applications to apply penalties to sellers, with distributed components on AWS EC2; implemented Java/Spring Boot services supporting synchronous and asynchronous communication.

Senior Software Engineer at MERCADO LIBRE SRL

July 1, 2020 - November 1, 2020

Seller Fraud Prevention - Fraud Marketplace IT: built a centralized tool for manual fraud case submissions, using Java/Spring Boot with asynchronous communication via BigQueue; added metrics for business analysis.

Software Engineer Analyst at MERCADO LIBRE SRL

January 1, 2020 - July 1, 2020

Fraud Marketplace IT: migrated and centralized rules for fraud prevention in the classified products domain; integrated Mantika neural network models to enhance fraud detection.

Software Engineer Analyst at MERCADO LIBRE SRL

July 1, 2019 - January 31, 2020

Fraud Marketplace IT: led the migration of a centralized rules engine to apply penalties; implemented exclusion of certain users; created metrics for fraud detection.