Israel Antonio Guerrero

Team Lead / Senior Software Developer at Levio Consults

Coordinated cross-functional teams (managers, analysts, devs and architects); Golang development with unit tests and integration tests; code reviews and improvements; focus on code quality and performance; design details and client requirements; coaching squads; API testing; CI/CD pipelines and version releases; planned workload distribution across team.

Team Lead / Senior Software Developer at Levio Conseils

Lead cross-functional collaboration with managers, analysts, developers and architects; implement g olang with unit tests and integration tests; participate in code reviews and provide guidance on code improvements; focus on code quality and performance; design and validate technical solutions against client requirements; support and coach technical squads; test API functionality and detect defects; manage pipelines and generate release versions; plan and distribute work across the team.

Architect / Senior Programmer Analyst at National Bank of Canada

Python development with unit tests (pytest/poetry); Go scripts for functional tests and monitoring; React frontend with TypeScript and i18n; add new features and fix bugs in React apps; implement Step Functions and Jenkins pipelines; full-stack design to support allocation processes; cloud-focused initiatives on AWS.

Java Architect at UNICOMER

Backend Java architecture for Emma-Store; backend API creation; test automation; integration with Google Pub/Sub; collaboration with Angular frontend; new API implementations; data loads via Postman and GCP database; using Google Pub/Sub for messaging.

Java Architect at Unicomer (El Salvador) - Remote

Upgraded Java version from 11 to 17; created new backend APIs for Emma-Store; automated testing; connected new APIs with frontend; integrated Google Pub/Sub; backend APIs implemented with Google Pub/Sub; data management and API integration with frontend teams.

Senior Software Developer at Lotería en Línea

Containerization of web application; migration to Docker/OpenShift; Golang microservices development; front-end with Angular/TypeScript; API and event-driven architecture; performance improvements; test automation.

Senior Java Developer at Loterie en Ligne

Containerized the web application and its components for deployment in Docker; implemented gRPC microservices; upgraded Java 8 to 11; configured Spring Boot; automated tests; collaborated with frontend teams (Angular/TypeScript) for integrations.

Senior Java Developer at Desjardins (Consultant)

REST API and microservice development; test-driven development (Cucumber, Postman); deployment pipelines and version control; mentoring and collaborating with junior developers; emphasis on code quality and maintainability in a distributed team.

Senior Programmer Analyst at National Bank of Canada (Consultant)

Java backend development; system maintenance; API enhancement; testing; migration; collaboration with multiple teams.

Senior Java Developer at 4th Source Consulting

Full-stack Java development; backend services; testing; collaboration with QA; client-facing responsibilities; remote.

Senior Programmer Analyst at Soluciones Indra - Consulting

Full-stack Java development; backend services with Java 8; migration and testing tasks; collaboration with frontend teams; software security and CI/CD considerations.

Java Developer at GFT Group

Java development; REST APIs; microservices; backend services; SQL databases; team collaboration.

Java Developer at GFT Group – Consulting

Backend and web API development; Java 8; Oracle/MyBatis; testing and performance tuning; collaboration with banking clients.

Senior Programmer Analyst at Banco Plaza – Banking

Senior programmer analyst; maintenance of banking systems; data processing; ETL corrections; backend and database operations; Unix shell scripts; Tomcat usage.

Senior Programmer Analyst at Desjardins (Consultant) - Caracas

Back-end development and web services; calls to PL/SQL packages; migration/move to new platforms; test-driven approaches and release management.