I am a seasoned Full Stack Engineer with 12+ years of experience building web and enterprise applications. I specialize in Java (Spring Boot) and Python (Django/DRF) for backend systems, with strong front-end skills in React and TypeScript to deliver polished user experiences. I have worked across SQL/NoSQL databases, microservices, cloud-native deployments, and agile teams. I enjoy building scalable, observable systems and collaborating with product, design, and operations to drive business value.

Guerby Mertil

I am a seasoned Full Stack Engineer with 12+ years of experience building web and enterprise applications. I specialize in Java (Spring Boot) and Python (Django/DRF) for backend systems, with strong front-end skills in React and TypeScript to deliver polished user experiences. I have worked across SQL/NoSQL databases, microservices, cloud-native deployments, and agile teams. I enjoy building scalable, observable systems and collaborating with product, design, and operations to drive business value.

Available to hire

I am a seasoned Full Stack Engineer with 12+ years of experience building web and enterprise applications. I specialize in Java (Spring Boot) and Python (Django/DRF) for backend systems, with strong front-end skills in React and TypeScript to deliver polished user experiences.

I have worked across SQL/NoSQL databases, microservices, cloud-native deployments, and agile teams. I enjoy building scalable, observable systems and collaborating with product, design, and operations to drive business value.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Language

English
Fluent
Spanish; Castilian
Intermediate

Work Experience

Senior Software Engineer at GB Magazine
September 1, 2023 - Present
Delivered high-quality software solutions enhancing GB Magazine's bilingual lifestyle platform by improving performance, usability, and editorial efficiency. Designed and launched BilingualCMS, a custom content management system enabling editorial teams to publish articles in English and Spanish with streamlined workflows. Integrated social media APIs (Facebook, Twitter, Instagram) to automate content sharing and track engagement metrics. Built EventSnap, an AI-powered event photo automation tool reducing manual photo curation using AWS Lambda.
Senior Software Engineer at Atlantic International Capital Digital Asset Group LLC
August 1, 2023 - August 18, 2025
Developed and maintained software solutions supporting digital asset advisory services, innovating crypto sponsorship and token strategies. Created CryptoConnect, a web platform streamlining management of crypto sponsorship deals with sports teams and entertainment partners. Integrated blockchain payment gateways using Ethereum and Coinbase Commerce APIs to facilitate seamless digital asset transactions and donations. Built internal real-time dashboards for token launch tracking, investor engagement, and campaign performance. Operated in a small, agile team collaborating directly with executives on product decisions.
Full Stack Software Engineer at DecoBike
March 1, 2020 - August 18, 2025
Developed and maintained software systems supporting Miami's leading bike-sharing platform, fostering strong community engagement to promote sustainable urban mobility. Coordinated outreach initiatives and educational programs to increase public awareness and ridership across diverse neighborhoods. Created user-facing dashboards and tools for community feedback collection and issue reporting, enhancing response time to rider concerns. Supported operational logistics by integrating real-time data for bike/scooter availability and maintenance scheduling. Acted as liaison between technical teams and community stakeholders to translate user needs into software features and service improvements.
Software Engineer at BikeForLife USA
January 1, 2012 - August 18, 2025
Developed and maintained software solutions supporting BikeLife Chicago's mission of promoting fitness and supporting underserved communities through cycling initiatives. Integrated a point-of-sale system with customer relationship management tools to enhance sales and service interactions. Developed a mobile application for customers to schedule service appointments and track repair status, improving customer satisfaction. Engineered a custom inventory management system to streamline tracking of electric bikes and scooter repairs, reducing processing time.
Software Engineer Intern at David Barton Gym
January 1, 2010 - August 18, 2025
Contributed to developing and maintaining digital solutions enhancing member experience and operational efficiency at a luxury fitness brand. Assisted in building and optimizing the gym's membership management system, improving check-in speed and data accuracy. Supported integration of IoT-enabled fitness equipment for real-time performance tracking and personalized workout feedback. Developed internal dashboards to monitor equipment usage, maintenance schedules, and member engagement metrics.
Senior Software Engineer at GB Magazine
September 1, 2023 - Present
Delivered high-quality software solutions to enhance GB Magazine's bilingual lifestyle platform by improving performance, usability, and editorial efficiency. Designed and launched BilingualCMS, a custom content management system enabling editorial teams to publish articles in English and Spanish with streamlined workflows. Integrated social media APIs (Facebook, Twitter, Instagram) to automate content sharing and track engagement metrics. Built EventSnap, an AI-powered event photo automation tool that reduced manual photo curation using AWS Lambda.
Senior Software Engineer at Atlantic International Capital Digital Asset Group LLC
August 31, 2023 - August 18, 2025
Developed and maintained software solutions supporting digital asset advisory services, driving innovation in crypto sponsorship and token strategy. Built CryptoConnect, a web platform for streamlined management of crypto sponsorship deals with sports teams and entertainment partners. Integrated blockchain payment gateways using Ethereum and Coinbase Commerce APIs to facilitate seamless digital asset transactions and donations. Created internal real-time dashboards for token launch tracking, investor engagement, and campaign performance. Operated in a small, agile team collaborating directly with executives on product decisions.
Full Stack Software Engineer at Deco Bike
March 1, 2020 - August 18, 2025
Developed and maintained software systems supporting Miami's leading bike-sharing platform fostering strong community engagement to promote sustainable urban mobility. Coordinated outreach initiatives and educational programs to increase public awareness and ridership across diverse neighborhoods. Built user-facing dashboards and tools for community feedback collection and issue reporting, enhancing response time to rider concerns. Acted as liaison between technical teams and community stakeholders, translating user needs into software features and service improvements. Monitored system usage data and feedback to inform product roadmaps and operational decisions. Supported operational logistics integrating real-time data for bike/scooter availability and maintenance scheduling.
Software Engineer at BikeForLife USA
January 1, 2012 - August 18, 2025
Developed and maintained software solutions supporting BikeLife Chicago's mission of promoting fitness and supporting underserved communities through cycling initiatives. Integrated point-of-sale system with customer relationship management tools to enhance sales and service interactions. Developed a mobile application for customers to schedule service appointments and track repair status, improving customer satisfaction. Engineered a custom inventory management system to streamline tracking of electric bikes and scooter repairs, reducing processing time.
Software Engineer Intern at David Barton Gym
January 1, 2010 - August 18, 2025
Contributed to development and maintenance of digital solutions enhancing member experience and operational efficiency at a luxury fitness brand. Assisted in building and optimizing the gym's membership management system, improving check-in speed and data accuracy. Supported integration of IoT-enabled fitness equipment for real-time performance tracking and personalized workout feedback. Developed internal dashboards to monitor equipment usage, maintenance schedules, and member engagement metrics.
Senior Java FullStack Engineer
June 1, 2004 - September 8, 2025
Full Stack Engineer at GB MAGAZINE
September 1, 2023 - Present
Led backend development for BilingualCMS, a multilingual SaaS content platform enabling editorial teams to publish articles in English and Spanish; implemented backend in Java/Spring Boot with Spring MVC, Spring Data JPA, and Hibernate ORM; created a React/TypeScript admin dashboard; implemented unit/integration testing with JUnit 5 and Mockito; established monitoring with Micrometer and Prometheus/Grafana.
Java FullStack Engineer at Atlantic International Capital Digital Asset Group LLC
April 1, 2023 - September 8, 2025
Developed CryptoConnect, a platform for managing digital asset sponsorships and transactions; integrated blockchain payment gateways; built real-time dashboards with React/TypeScript; optimized backend with Redis, HikariCP, and Spring Batch; used MongoDB/Redis for semi-structured data and caching; deployed services with Kubernetes and Docker; monitored with Datadog/OpenTelemetry/AWS CloudWatch.
Software Engineer at DECOBIKE
March 1, 2020 - September 8, 2025
Migrated legacy monoliths to Spring Boot microservices; implemented Spring MVC, Spring Security, RESTful APIs, and JWT-based authentication; designed MSSQL schema, wrote JPQL/HQL/native SQL, and ensured transactional integrity; developed responsive front-end with TypeScript/React; monitored services with Datadog.
Software Developer at BikeForLife
January 1, 2015 - September 8, 2025
Developed backend services with Java/Spring MVC to manage bike inventory, registrations, rentals, and maintenance; built Angular frontend to enable users to view programs and track rentals; implemented unit testing with JUnit and Mockito to ensure robust service layers.

Education

Bachelor of Computer Science at West Virginia State University
September 1, 2000 - May 1, 2005
Florida International Communication at Florida International Communication
September 1, 2002 - June 1, 2004
Bachelor of Computer Science at West Virginia State University
September 1, 2000 - May 1, 2005
Florida International Communication at Florida International Communication
September 1, 2002 - June 1, 2004
Bachelor of Computer Science at West Virginia State University
September 1, 2000 - May 1, 2005
Communication at Florida International University
January 11, 2030 - September 8, 2025

Qualifications

Bachelor of Computer Science
September 1, 2000 - May 1, 2005

Industry Experience

Software & Internet, Media & Entertainment, Financial Services, Transportation & Logistics, Consumer Goods, Professional Services